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SI9145

Part Number	SI9145
Manufacturer	Vishay Siliconix
Description	Low-Voltage Switchmode Controller
Published	Apr 8, 2005
Detailed Description	Si9145 Vishay Siliconix Low-Voltage Switchmode Controller FEATURES D D D D D D 2.7-V to 7-V Input Operating Range Volta...
Datasheet	SI9145 PDF File

Overview

Si9145 Vishay Siliconix Low-Voltage Switchmode Controller FEATURES D D D D D D 2.
7-V to 7-V Input Operating Range Voltage-Mode PWM Control High-Speed, Source-Sink Output Drive (200 mA) Internal Oscillator (up to 2 MHz) Standby Mode 0−100% Controllable Maximum Duty-Cycle DESCRIPTION The Si9145 switchmode controller IC is ideally suited for high efficiency dc/dc converters in low input voltage systems.
Operation is guaranteed down to 2.
7 V, with a minimum start-up voltage of 3.
0 V making the Si9145 ideal for use with NiCd, NMH, and lithium ion battery packs.
A mode select pin allows the output driver polarity to be programmed allowing the device to function as a step-up or step-down converte...

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