| Specifications | LTC3526L/LTC3526LB - 550mA 1MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN Data Sheet Linear Technology Corporation |
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| Specifications | LTC3526L/LTC3526LB - 550mA 1MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN Data Sheet Linear Technology Corporation |
| Business section |
|
| Specifications | LTC3526L/LTC3526LB - 550mA 1MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN Data Sheet Linear Technology Corporation |
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| Content | LTC3526L/LTC3526LB 1 3526lfb 550mA 1MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN The LTC®3526L/LTC3526LB are synchronous, fixed frequency step-up DC/DC converters with output discon- nect. Synchronous rectifi cation enables high effi ciency in the low profi le 2mm × 2mm DFN package. Battery life in single AA/AAA powered products is extended further with a 680mV start-up voltage and operation down to 500mV once started. A switching frequency of 1MHz minimizes solution foot- print by allowing the use of tiny, low profi le inductors and ceramic capacitors. The current mode PWM design is internally compensated, reducing external parts count. The LTC3526L features Burst Mode operation at light load conditions allowing it to maintain high effi ciency over a wide range of load. The LTC3526LB features fi xed frequency operation for low noise applications. Anti-ring circuitry reduces EMI by damping the inductor in discontinuous mode. Additional features include a low shutdown current of under 1µA and thermal shutdown. The LTC3526L/LTC3526LB are housed in a 2mm × 2mm × 0.75mm DFN package. ■ Medical Instruments ■ Noise Canceling Headphones ■ Wireless Mice ■ Bluetooth Headsets ■ Delivers 3.3V at 100mA from a Single Alkaline/ NiMH Cell or 3.3V at 200mA from Two Cells ■ VIN Start-Up Voltage: 680mV ■ 1.5V to 5.25V VOUT Range ■ Up to 94% Effi ciency ■ Output Disconnect ■ 1MHz Fixed Frequency Operation ■ VIN > VOUT Operation ■ Integrated Soft-Start ■ Current Mode Control with Internal Compensation ■ Burst Mode® Operation with 9µA IQ (LTC3526L) ■ Low Noise PWM Operation (LT3526LB) ■ Internal Synchronous Rectifi er ■ Logic Controlled Shutdown (IQ < 1µA) ■ Anti-Ring Control ■ Low Profi le (2mm × 2mm × 0.75mm) DFN-6 Package , LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. SW VIN 1.78M 1M 3526 TA01a LTC3526L SHDN VOUT FB VIN1.6V TO 3.2V VOUT3.3V 200mA OFF ON 4.7µH 4.7µF 4.7µF GND LOAD CURRENT (mA) 0.01 40 EFFICIENCY (%) POWER LOSS (mW) 50 60 70 80 0.11101001000 3526 TA01b 30 20 10 0 90 100 1 10 100 0.1 0.01 1000 EFFICIENCY POWER LOSS VIN = 2.4V Effi ciency and Power Loss vs Load Current TYPICAL APPLICATION APPLICATIONS FEATURESDESCRIPTION |
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| Following Datasheets | 3526llb2f (16 pages) 355_manual (23 pages) 358_REV3 (9 pages) 3598fa-1 (24 pages) 3599fa-1 (24 pages) 360_1 (6 pages) 361-1 (3 pages) 3612_4LEDs_120Vac_13V350mA-1 (13 pages) 362-1 (4 pages) 362207 (1 pages) |
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