Ling Li
Ling Li, the special company puts out the products LTM4605 of the adjustable output voltage
On November 5, 2007, Ling Li belongs to special company Linear Technology Corporation Put out and is higher than in the variable input voltage, equal to or the products LTM4605 less than adjustable output voltage at the time of the output voltage, thus has expanded DC/DC miniature module uModuleTM Stabilizator product series.
New depressurization – first devices of the boost type product series that this device is, in work from 20VIN range, regulate the output voltage of 0.8V to 16V, and offer the high output power up to 150W. LTM4605 is in 15mm x 15mm x 2.8mm pad mesh array LGA The plastics mould integrating and stepping down while capsulating synchronously – boost type DC/DC control device, 4 nchannels MOSFET, import and export by-pass capacitors and compensator circuit. This device only needs an inductor, feedbacks and sense resistor and high-capacity capacitor can realize very tabular, compactness and efficient design. LTM4605 can and employ and make up the compact stabilizator solution by the battery-opwered powerful device,etc. for the network, industry and car system.
Exclusive 4 switches of synchronous MOSFET design, LTM4605 can realize in the boost mode it reaches 97.3% of the efficiency high, the efficiency at the time of the mode that and is stepping down can reach 97.7% VIN: From 4.5V to 20V; VOUT: 12V; IOUT: 5A . This kind step down and boost type miniature the intersection of module and solution use 8 assemblies and sell at the inductor now only, and the main inductor converter of single-end SEPIC It needs to reach 20 assemblies and customize magnetic element more to wait for other topologically. In addition, can compare the efficiency of SEPIC circuit is probably 76% to 84%. In order to reduce the unwanted harmonic frequency, the phase place of LTM4605 can also be locked to 200kHz to the outside clock rate of 400kHz. The safe function is including pigeonholing and returning current protection.
LTM4605 works in the temperature range of 85oC in – 40oC. Regard 1,000 as the unit to buy in batches, each slice of trigger price is 18.85 dollars.
The photo explains: – boost type DC/DC solution that the simplest high-power steps down
Characteristic summary: LTM4605
– boost type framework that the single inductor steps down Synchronism 4 switches of work realize the high efficiency Up to 98% It is wide to input the voltage range: From 4.5V to 20V It is wide to export the voltage range: From 0.8V to 16V 1% set up the accuracy grade of a output voltage 15mm x 15mm x 2.8mm LGA capsulates
... Read moreLing Li, the special company puts out and connects the voltage reference LTC6652 in series accurately and low-noise
On December 13, 2007, Ling Li belongs to special company Linear Technology Corporation Put out accurate low-noise the intersection of series voltage and group, allow LTC6652, device this have 0.05% internal accuracy grade and most big voltage drift of 5ppm/oC. LTC6652 has remarkable load and voltage modulability, the noise is only 2.1ppm. High-precision and low-noise to make LTC6652 suitable for data acquisition and medical the intersection of instrument and application very. LTC6652 has output electric-current driving of ± 5mA, can offer the highly accurate ADC voltage reference without the single dashpot. In addition, LTC6652 stipulates that fully works – from 125oC temperature range, is very suitable for high performance, high-temperature industry and car application.
LTC6652 works with the high mains voltage up to 13.2V, has 300mV differential pressure. Shut down function allow quiescent current drop from 350uA to low to 2uA, in respect to needing the high-resolution appearances of low noise and low power consumption, this is a very useful function. In addition, because LTC6652 does not need load capacitor, has narrowed the circuit board space taken up to the maximum extent.
Ling Li, the special company designs the manager Brendan Whelan to say: “High-precision, low-noise and wide temperature range will attract high-performance industry and car to employ the designer. ”
LTC6652 series have 7 kinds of output voltage: 1.25V, 2.048V, 2.5V, 3.0V, 3.3V, 4.096V and 5V. LTC6652 has already gone into operation in an all-round way, regards 1,000 as the unit to buy in batches, each price is 1.65 dollars.
The photo explains: It is low to drift about and low-noise voltage reference
Characteristic summary: LTC6652
Available voltage: 1.25V, 2.048V, 2.5V, 3V, 3.3V, 4.096V and 5V complete regulation are – from 40oC to remarkable accuracy grade and drift of working in 125oC temperature range: A Grade 0.05% of the original accuracy grade, 5ppm/oC drifts about B Grade 0.1% of the original accuracy grade, 10ppm/oC drifts about Low-noise: 2.1ppm from 0.1Hz to 10Hz ± 5mA is absorbed and offered the low power of ability to shut down: Maximum value < 2uA... Read more
Ling Li, the special company introduces the accurate electric current detector amplifier LT6105
On December 10, 2007, Ling Li belongs to special company Linear Technology Corporation Introduce accurate electric current, measure LT6105 of amplifying etc., input of device this altogether exemplary to can enclose from low on V- and 0.3V expand to 44V higher than V-. LT6105 altogether exemplary to enclose, free of positive mains voltage, suitable for many kinds of application. LT6105 can as on high-tension side or low tension side electric current find the monitor to use. It short out at load LT6105 or mains failure at all right for continuous surveillance for electric current,and can continuous surveillance battery at time when the full electric quantity is exhausted to the electric quantity. LT6105 can monitor the electric current of the voltage terminal of the negative power supply directly, and because the input of LT6105 can bear the differentiating voltage up to ± 44V, so it is very suitable for monitoring the load that is connected through safety fuse or MOSFET switch.
LT6105 has remarkable precision, input offset voltage is only 300uV, it is only 0.5uV/oC to input and lack proper care to drift about. Any gain to noise temperature ratio of 1 to 100V/V can be presumed with the external resistance, the maximum value of the gain error is restricted to low in 1%. The independent mains voltage that LT6105 uses from 2.85V to 36V works, only consume 150uA electric current. At the deenergization, measure pin, bias for shut off, thus measure how about it will be voltage state, can all prevent loading any sense resistor.
Ling Li, the design manager Mike Kultgen of the special company said: “LT6105 is today the most flexible electric current measures the devices on the market. It one intact rigorous the intersection of electric current and detector amplifier, in one piece small to include a lot of function capsulate. ”
LT6105 has already gone into operation in an all-round way, regards 1,000 as the unit to buy in batches, each price is 0.99 dollars.
The photo explains: Accurate and expanding the electric current detector amplifier of the input span
Characteristic summary: LT6105
Very wide, Over-the-TopTM inputs altogether exemplarily and encloses Expand to 44V not influenced by V higher than V- Expand to be low in V- – 0.3V Independent power package: From 2.85V to 36V Input offset voltage: Maximum value is 300uV inputs and lacks proper care to drift about: 0.5uV/oC gain error: Maximum value is Available external resistance 1% disposes the gain to noise temperature ratio Working current: 150uA transfer ratio: 2V/us measures the input current while cutting out: 1nA operating temperature range: -From 40oC to 125oC Adopt 2mm x 3mm DFN and 8 lead wire MSOP are capsulated
... Read moreLing Li, the special company introduces the voltage regulation of switch and controls the device LTC3812-5
Beijing -Ling Li belong to special company Linear Technology Corporation The stepping down voltage regulation of switch controls the device LTC3812-5 to introduce the high input voltage synchronously, this device lowers the voltage the output voltage as 0.8V to 93% VIN from 60V directly. LTC3812-5 adopts the single inductor, makes use of valley point current mode control framework of invariable dwell time to realize very low duty ratio and extremely quick transient response, do not need sense resistor, has offered the current limiter of accurate Cycle by Cycle.
1Ω grid driver has reduced the switch driving MOSFET to produce with high frequency and under high pressure to the maximum extent transiently to loss on LTC3812-5 firm slice. In order to optimize the size of inductor and capacitor, switching frequency can be chosen in the range of 1MHz from 100kHz.
LTC3812-5 can configure the mode to jumping with the pulse and work, in order to keep the high efficiency in the light load. Its 0.8V basic reference has accuracy grade of ± 0.75% in – 40 degrees of C to the operating temperature range of 85 degrees of C. Programmable soft turn on allows users to regulate starting time. After increasing a small-scale outside SOT23 MOSFET, Integrated bias controls and produces the power of gate drive by inputting the power during start. Other characteristic including power good signal, shutting down, voltage shortage have been occluded and exported and pressed and protected. Employ and include 48V power changing, network equipment and car, industrial control and airline that must bear the surge voltage of high input in telecommunications and the base station power.
LTC3812-5 adopts 16 lead wire heat-resisting strengthening SSOP to capsulate. Regard 1,000 as the unit to buy in batches, each slice of trigger price is 3.25 dollars.
The photo explains: 60V stepping down DC/DC control device synchronously
Characteristic summary: LTC3812-5
Work with 60V input voltage
Mode control of the electric current
It is big 1Ω grid driver
Do not need the sense resistor of electric current
The mode control of the valley point current realizes the extremely quick transient response
Available frequency from 100kHz to 1MHz
Have 0.75% of the basic reference accuracy grade of ± in – 40 degrees of C to 85 degrees of C operating temperature range
The available pulse jumps the work pattern realizes the high efficiency in the light load
... Read moreLing Li, the special company puts out 3 terminals LDO LT3080 of 1.1A
Ling Li belong to special company Linear Technology Corporation Put out 1.1A 3 and carry sub LDO LT3080, this device can be connected in parallel in order to spread heat easily, and can regulate with the single resistor. Such new framework stabilizator adopts the basic reference of the electric current, allow to regard a sub-paragraph p-c board routing as the ballast and electric current to share a plurality of stabilizators, to realize in the surface mounted system of the heat sink had multiply that enlarges the linear regulation. LT3080 does not have any that has realized high performance trading off. This device has ability of wide input voltage from 1.2V to 40V, the voltage of Low Dropout is only 300mV at the time of full load. The output voltage is adjustable, have it from 0V to the wide voltage range of 40V, and basic reference of fine setting has realized the high accuracy grade of ± 1% on stretch. Width VIN and VOUT ability, voltage and load regulate and high ripple inhibit from and external device count little connecting ability in parallel, making device this suitable for modern the intersection of multitrack and system very. Ling Li, special company’s executive vice president and concurrently cheif technology officer Robert Dobkin said: “LT3080 stabilizator allows the designer to use all surface mounted solutions in heavy current, sensitive application of the noise such as the high-frequency serial data link. In addition, because this device can offer the nought output, is breaking the electric device in its all right control system. The collecting electrode of the transistor-resistor logic of thorough fare can be used, has further increased and dispelled the heat and selected. ” LT3080 adopts various heat-resisting enhancement types to capsulate surface mounted and compatibly, including tabular 0.75mm 8 lead wire DFN 3mm x 3mm , 8 lead wire heat-resisting strengthening MSOP and simple 3 lead wire SOT-223 apt to use are capsulated. These capsulate in surface mounted to can break up appear the intersection of 1W and heat in 2W employ, as heat sink. In addition device this adopt the intersection of TO-220 and power capsulate also, with suitable to mount onto heat sink, for the application of the great power consumption. Regard 1,000 as the unit to buy in batches, each slice of trigger price is 1.88 dollars, 1.94 dollars, 1.81 dollars and 2.20 dollars respectively.
The photo explains: The future generation, single resistor, it is easy to be parallel 1.1A LDO Characteristic summary: LT3080 can connect relatively high output current in order to realize in parallel or spread the p-c board heat to output The voltage of Low Dropout: 300mV is low-noise: 40uVRMS broadband 100kHz Stable 10uA current source basic reference Arrange Cheng with single resistor for VOUT, can transfer VOUT range: From 0V to 40V width VIN range: From 1.2V to 40V VCONTROL IN Output current: 1.1A can stabilize the limit and flow with pottery, aluminium or tantalum capacitor heat limits 8 lead wire flat flat DFN 3mm x 3mm x 0.75mm Capsulation Heat-resisting enhancement type 8 lead wire MSOP seals and installs 5 lead wire TO-220 to seal and install simple 3 lead wire SOT-223 apt to use to capsulate ... Read moreLing Li, the special company introduces CMOS operation amplifier LTC6081 and LTC6082
The 25th of September of 2007 Japan insults the special company of strength Linear Technology Corporation Putting out CMOS operation enlargedly device LTC6081 and LTC6082, in break through precision limit with gain bandwidth and low deviation in 90uV of 3.5MHz in whole temperature range of 125oC two device these. The double-channel LTC6081 and LTC6082 of No. four has rails to rail inputting and output stage, have realized only for the low frequency noise of 1.3uVp-p and maximum is the low input bias current of 1pA in 25oC, very suitable for the precision instrument.
LTC6081 and every amplifier of LTC6082 consume the intersection of 330uA and electric current only, have available to shut down function, allow the electric current of every amplifier to lower to 0.5uA, this has further saved the electric quantity of battery. In addition, these amplifiers also have 3.5MHz gain bandwidth and 1V/us conversion rate not giving in. LTC6081 and LTC6082 had 105dB CMRR and 90dB PSSR, the large signal voltage gain of 120dB guaranteed the linear scale of the gain to noise temperature ratio at the same time.
Ling Li, the manager Brian Black of product market of special company said: “DC characteristic of LTC6081 and LTC6082 can compare favourably, and realized the input bias current of pA grade with the optimal bipolar amplifier. The combination with remarkable speed – power ratio of this accuracy will offer the new possibility to low-powered instrumental system designer. ”
The double-channel LTC6081 adopts 8 to guide the foot MSOP and dainty 3mm x 3mm DFN to capsulate. LTC6082 of No. four adopts 16 to guide the foot SSOP and 5mm x 3mm DFN to capsulate. Regard 1,000 blocks as the unit to buy in batches, double-channel LTC6081 each slice of trigger price is 1.74 dollars, No. LTC6082 each slice of trigger price four is 2.97 dollars.
The photo explains: Drift, 3.5MHz, CMOS amplifier less than each
Characteristic summary: LTC6081 and LTC6082
The offset voltage of maximum: 70uV 25oC Maximum biases the drift: 0.8uV/oC maximum input and biased: 1pA 25oC ,40pA TA is less than or equal to 85oC The voltage gain of the great signal: The representative value is 120dB gain bandwidth product: 3.5MHz CMRR: Minimum 100dB PSRR: Minimum 98dB is from 0.1Hz to 10Hz noise: 1.3uVp-p power electric current: 330uA rail is to the rail import and export The unit gain to noise temperature ratio is very steady Stipulate in commercial, industry and expand from 2.7V to 5.5V working voltage – from 40oC to 125oC The working double-channel LTC6081 adopts 8 lead wire MSOP and 10 lead wire DFN 10 to capsulate in the temperature range, LTC6082 of No. four adopts 16 lead wire SSOP and DFN to capsulate
... Read moreLing Li, the special company introduces stepping up DC/DC converter synchronously
On September 13, 2007, Ling Li belongs to special company Linear Technology Corporation Introduce and output and break connecting and integrated soft turn on function 1MHz, electric current mode, stepping up DC/DC changing device LTC3528/B synchronously. The intersection of 1A and from 0.70V switch start, as 0.5V while working of device this Last output voltages up to 5.25V by input of 5V voltage range,is it or not monomeric / multinode and alkaline to last lithium ion / polymer very /nickel-hydrogen application.
LTC3528/B can offer the high serial output current up to 200mA in 3.3V with the monomeric alkaline battery ,Or offer 400mA electric current with two alkaline batteries. Commutate realizing it reaches 94% of the efficiency high synchronously, and the burst mode Burst Mode? The work can drop the quiescent current to only 12uA LTC3528 ,Thus has lengthened and held the operation time of applied battery. 2mm x 3mm DFN-8 capsulation and 1MHz invariable switching frequency reduced the size of inductor and capacitor to the maximum extent, can make up the hand type and employ the required one daintily and take the area solution of the board.
LTC3528/B adopts RDS ON Only 0.175Ω nchannel And 0.25Ω p-channel Internal for switch,let’s reach after realizing whether whether it is high 94% efficiency. Output and give up and connect the output enable of the function and totally discharge during shutting down. The surge current when this device still exercises restraint in starting, has reduced the surge current of the power of input to the maximum extent.
LTC3528/B will also be regulated and exported when the input voltage exceeds the output voltage. Other characteristics include resisting control of ringing, short circuit protection, soft turn on and heat protection. An ideal solution.
Need with most low application that possible noise work but speech, LTC3528B edition can use in a situation that the burst mode function forbids. This edition works in all electric current grade by serial mode, the efficiency while reducing the light load. However, this device Built-in: squelch has reduced the noise interference of possible switch to the maximum extent.
LTC3528EDDB and LTC3528BEDDB all adopt 8 lead wire DFN to capsulate, supplies from stock. Regard 1,000 as the unit to buy in batches, each slice of trigger price is 1.95 dollars.
The photo explains: Adopt 2mm x 3mm DFN encapsulated compact type, high efficiency 1A boost type stabilizator
Characteristic summary: LTC3528/B
With monomeric to be alkaline /nickel-hydrogen battery offer 3.3V/200mA or offer 3.3V/400mA VIN pickup voltage by two battery: 700mV outputs and breaks and connects 1MHz fixed frequency job VIN ... Read more
Ling Li, the special company introduces stepping down DC/DC control device synchronously of the lowest quiescent current of the industry
On December 5, 2007, Ling Li belongs to special company Linear Technology Corporation Introduce, have industry most low quiescent current person who step down DC/DC controls the device LTC3834/-1 synchronously. This device only absorbs 30uA electric current in the standby mode, is very suitable for in ” remain engaged all the time ” Car system or it is battery-driven type for apparatus at this moment, last ” run half ” system State , or keep it when the car engine is shut off in the application of the energy capacity of battery. The mode of shutting down, LTC3834/-1 only consumes 4uA electric current.
This control device is Ling Li’s products that the ultralow static electric current DC/DC switch voltage regulation control device product line of special company increases newly, product line this have 20 varied device, use for step down, boost, step down – boost, SEPIC and negative output topological.
Inputting power range widely enough from 4V to 36V of LTC3834/-1, can protect this device against the high influence transient in input voltage, and this device continues working when the car cold vehicle is started. LTC3834/-1 can offer the output voltage of 0.8V until 10V, very suitable for the voltage source of the usually required great in voice system, receiver of the satellite, simulation tuner and CD/DVD player.
This control device built-in LDO is used as biasing the power, include one strong the intersection of MOSFET and driver with high to reach, offer the high load current up to 20A by 95% of the efficiency also. Invariable frequency, electric current mode framework of LTC3834/-1 have offered remarkable voltage and load to regulate. This device has very low voltage of differential pressure, reaches 99% duty ratio high, and raise the output voltage smoothly with its adjustable soft turn on and following function during start. Operating frequency is adjustable from 250kHz to 530kHz, and can use its ring of phase locking PLL Move ahead simultaneously to the external clock from 140kHz to 650kHz. In addition, during light load can choose user by serial, pulse jumping or burst mode Burst Mode... Read more
Ling Li, the special company introduces ADC driver LTC6400-20 and LTC6401-20
Ling Li belong to special company Linear Technology Corporation Put out ADC driving device LTC6400-20 and LTC6401-20, the unprecedented characteristic that these two sections of devices have been realized by power of single 3V. The whole difference amplifier contain the gain to noise temperature ratio and set up the resistance, has lightened and driven difficulty of high performance ADC at a high speed the most. LTC6400-20 has fixed gain of 20dB, while inputting the frequency as 140MHz, has – 3 stepses of inter-modulation distortion IMD3 of 93dBc The characteristic, the noise figure is 6.5dB. At at 240MHz,whose name is IMD3 fine on – 70dBc. This serial fixed gain, in order to put out successively from 8dB to other devices of 26dB.
LTC6400-20 adopts work of 3V mains voltage and realizes this kind of remarkable characteristic, and offer the output voltage of differentiating as 4.4VP-P of the excursion. This has except reduced the power consumption to the maximum extent, in adopting newest 3V and 3.3V ADC to employ, can remove the demand for the single 5V power. In order to further simplify it to ADC at a high speed for example: LTC2208 Connection,one be afforded to presume output common mode voltage of LTC6400-20 pieces of VOCM pin. Electric-wave filter contribute to, deal with flowing water line style the intersection of capacitive and the intersection of input and characteristic of ADC the commonly-owned electric charge inject into on-chip. Input all right AC or DC way to couple. Though is the whole differentiating, LTC6400-20 can still input single-end to convert to the differentiating and export easily.
LTC6401-20 is a kind of more baby device, optimize for lower input frequency. LTC6401-20 only consumes 50mA electric current This is half of LTC6400-20 . On the input frequency until 70MHz, LTC6401-20 can keep the distorted characteristic of low noise performance and – 90dBc equally.
Ling Li, the design manager Kris Lokere of the special company said: “LTC6400-20 is first products of this device series, the devices of this series have realized remarkable noise and distorted characteristic in DC to several frequency of numerous MHz. Besides ADC while driving communication and instrument to employ, LTC6400-20 will also have a lot of uses as high-performance differentiating driver and receiver. ”
LTC6400-20 and LTC6401-20 adopt dainty 3mm x 3mm 16 lead wire QFN to capsulate, has already begun to supply. Regard 1,000 as the unit to buy in batches, the trigger price of each slice of LTC6400-20 is 3.68 dollars, LTC6401-20 is 2.95 dollars.
The photo explains: 2GHz ADC driving device LTC6400 at a high speed
Characteristic summary: LTC6400-20
The intersection of 1.8GHz and 3dB bandwidth
10V/V 20dB Fixed gain
The total input noise is 2.1nV/ Hz
2 steps / 3 steps harmonic distortion is -73 /-98.3 dBc, 140MHz, 2VP-P
Import and export of the differentiating
200Ω input impedance
Mains voltage from 2.85V to 3.5V
90mA power electric current 270mW
From 1V to the common mode voltage of 1.6V output, adjustable
Work by DC or AC coupled mode
The differentiating output amplitude of maximum is 4.4VP-P
Small-scale 16 lead wire 3mm x 3mm x 0.75mm QFN capsulates
... Read moreLing Li, the special company puts out 100% The duty ratio double-channel exports the stepping down switch stabilizator
Ling Li belong to special company Linear Technology Corporation Introduced 100% of the duty ratio double-channels and exported the stepping down steady transformer DC/DC of switch and controlled the device LT3742, this device produced the high output voltage up to 30V, employ and include step-by-step motor, industrial control, car, distributed power and telecommunication system. LT3742 can also be disposed into a stepping down stabilizator with one side, and the other side is disposed into a condenser charge device current source oversize ,It is up to the tensile capacitor of several laws to used in capacitance value, in needing longer holding time or needing robot application of heavy crest current, this is a useful characteristic.
100% of the duty ratios of LT3742 allow the output voltage to be very close to the input voltage, is suitable for the power supply system of the battery. Input the voltage range to allow to work with the total line voltage the middle a lot of from 4V to 30V. Include it in the simple depressurization type DC/DC converter in order to produce one’s own driving voltage of grid, and does not need extra device in order to drive the high end MOSFET. The built-in grid driver supplies power for every single external nchannel MOSFET to output all the way, have realized the high output current up to 5A. The invariable 500kHz operating frequency with mode control of electric current is offered fast transient response and easy compensation. Pass and monitor the pressure drop precision measure output current on the sense resistor, and protect the converter in case of over load and short circuit. In addition, LT3742 has adjustable soft turn on, in order to control the duration of ascent of voltage slope that every way outputs and good signal of power.
LT3742 adopts 4mm x 4mm QFN-24 to capsulate. Regard 1,000 as the unit to buy in batches, each price is 2.30 dollars.
The photo explains: Double-channel, 100% Account for emptily, than stepping down DC/DC control device
Characteristic summary: LT3742
Double-channel, 180o oppisite phase stepping down DC/DC control device The voltage range of input is From 4V to 30V 100% of the duty ratios From 0.8V to the wide output voltage range of 30V Mode control of the electric current Put the nchannel MOSFET driver inside Fixed 500kHz operating frequency Programmable soft turn on Can configure to the capacitor charger oversize current source It has a good signal of power to output that two-way
... Read more