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LTC3525-5

Linear Technology Corporation
Part Number LTC3525-5
Manufacturer Linear Technology Corporation
Description 400mA Micropower Synchronous Step-Up DC/DC Converter
Published Jan 12, 2009
Detailed Description LTC3525-3/ LTC3525-3.3/LTC3525-5 400mA Micropower Synchronous Step-Up DC/DC Converter with Output Disconnect Features n...
Datasheet PDF File LTC3525-5 PDF File

LTC3525-5
LTC3525-5

Overview
LTC3525-3/ LTC3525-3.
3/LTC3525-5 400mA Micropower Synchronous Step-Up DC/DC Converter with Output Disconnect Features n Up to 95% Efficiency n Output Disconnect and Inrush Current Limit n Fixed Output Voltages of 3V, 3.
3V or 5V n Delivers 65mA at 3V from a 1V Input n Delivers 60mA at 3.
3V from a 1V Input, or 140mA at 3.
3V from a 1.
8V Input n Delivers 175mA at 5V from a 3V Input n Burst Mode® Operation: IQ = 7µA n Only Three External Components n VIN > VOUT Operation n <1µA Shutdown Current n Antiringing Control n Short-Circuit and Overtemperature Protection n Very Low Profile of 1mm n Tiny 6-Lead SC70 Package Applications n MP3 Players n Portable Instruments n Glucose Meters n Digital Cameras L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Patents pending.
Description The LTC®3525-3/LTC3525-3.
3/LTC3525-5 are high efficiency synchronous step-up DC/DC converters with output disconnect that can start up with an input as low as 0.
85V.
They offer a compact, high efficiency alternative to charge pumps in single cell or dual cell alkaline or Li-Ion applications.
Only three small external components are required.
The LTC3525 is offered in fixed output voltages of 3V, 3.
3V or 5V.
The device includes a 0.
5Ω N-channel MOSFET switch and a 0.
8Ω P-channel synchronous rectifier.
Peak switch current ranges from 150mA to 400mA, depending on load, providing enhanced efficiency.
Quiescent current is an ultralow 7µA, maximizing battery life in portable applications.
Other features include <1µA shutdown current, antiringing control and thermal shutdown.
The LTC3525 is available in a tiny 6-Lead SC70 package.
List of LTC3525 Options PART NAME INPUT START-UP VOLTAGE LTC3525-3 0.
85V LTC3525-3.
3 0.
85V LTC3525-5 0.
85V LTC3525D-3.
3 0.
85V LTC3525L-3 0.
7V OUTPUT VOLTAGE 3V 3.
3V 5V 3.
3V 3V VOU...


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