| Specifications | LTC3526L2/LTC3526LB2 - 550mA 2MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN Data Sheet Linear Technology Corporation |
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| Specifications | LTC3526L2/LTC3526LB2 - 550mA 2MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN Data Sheet Linear Technology Corporation |
| Business section |
|
| Specifications | LTC3526L2/LTC3526LB2 - 550mA 2MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN Data Sheet Linear Technology Corporation |
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| Content | LTC3526L-2/LTC3526LB-2 1 3526lb2f TYPICAL APPLICATION DESCRIPTION FEATURES APPLICATIONS 550mA 2MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN The LTC®3526L-2/LTC3526LB-2 are synchronous, fi xed 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 2MHz 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-2 features Burst Mode operation at light load conditions allowing it to maintain high effi ciency over a wide range of load. The LTC3526LB-2 features fi xed frequency operation for low noise applications. Anti-ring circuitry reduces EMI by damping the inductor in discon- tinuous mode. Additional features include a low shutdown current of under 1µA and thermal shutdown. The LTC3526L-2/LTC3526LB-2 are housed in a 2mm × 2mm × 0.75mm DFN package. L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Medical Instruments n Noise Canceling Headphones n Wireless Mice n Bluetooth Headsets n Delivers 3.3V at 100mA from a Single Alkaline/ NiMH Cell or 3.3V at 200mA from Two Cells n VIN Start-Up Voltage: 680mV n 1.5V to 5.25V VOUT Range n Up to 94% Effi ciency n Output Disconnect n 2MHz Fixed Frequency Operation n VIN > VOUT Operation n Integrated Soft-Start n Current Mode Control with Internal Compensation n Burst Mode® Operation with 9µA IQ (LTC3526L-2) n Low Noise PWM Operation (LTC3526LB-2) n Internal Synchronous Rectifi er n Logic Controlled Shutdown (IQ < 1µA) n Anti-Ring Control n Low Profi le (2mm × 2mm × 0.75mm) 6-Lead DFN Package SW VIN 1.78M 1M 3526lb2 TA01a LTC3526L-2 SHDN VOUT FB VIN1.6V TO 3.2V VOUT3.3V 200mA OFF ON 2.2µH 4.7µF 4.7µF 33pF GND LOAD CURRENT (mA) 0.01 40 EFFICIENCY (%) POWER LOSS (mW) 50 60 70 80 0.11101001000 3526lb2TA01b 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 |
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| Following Datasheets | 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) 362226 (1 pages) |
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