Part Number
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SI9145 |
Manufacturer
|
Vishay Siliconix |
Description
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Low-Voltage Switchmode Controller |
Published
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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
|
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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