LTC3525ESC6-3.3#TRPBF Power Path Management IC Switching Voltage Regulators 400mA Synch, Boost Converter in SC70
microchip battery management
,battery charge management ic
LTC3525ESC6-3.3#TRPBF Power Path Management IC Switching Voltage Regulators 400mA Synch, Boost Converter in SC70
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
DescripTion
The LTC®3525-3/LTC3525-3.3/LTC3525-5 are high efficiency synchronous step-up DC/DC converters with output discon- nect 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, anti- ringing control and thermal shutdown. The LTC3525 is available in a tiny 6-Lead SC70 package.
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