Vishay Siliconix

Si9130

Document Number: 70190

S11-0975-Rev. G, 16-May-11

www.vishay.com

1

Not recommended for new designs, please refer to Si786

This document is subject to change without notice.

Pin-Programmable Dual Controller - Portable PCs

FEATURES

•

Fixed 5 V and Programmable 3.3 V, 3.45 V, or

3.6 V Step-Down Converters

•

Less than 500 µA Quiescent Current per Converter

•

25 µA Shutdown Current

•

5.5 V to 30 V Operating Range

DESCRIPTION

The Si9130 Pin-programmable Dual Controller for Portable

PCs is a pin-programmable version of the Si786 dual-output

power supply controller for notebook computers. The Buck

controllers provide 5 V and a pin-programmable output

delivering 3.3 V, 3.45 V, or 3.6 V.

The circuit is a system level integration of two step-down

controllers and micropower 5 V and 3.3 V linear regulators.

The controllers perform high efficiency conversion of the

battery pack energy (typically 12 V) or the output of an ac to

dc wall converter (typically 18 V to 24 V dc) to 5 V and 3.3 V

system supply voltages. The micropower linear regulator can

be used to keep power management and back-up circuitry

alive during the shutdown of the step-down converters.

A complete power conversion and management system can

be implemented with the Si9130 Pin-programmable Dual

Controller for Portable PCs, an inexpensive linear regulator,

the Si9140 SMP Controller for High Performance Processor

Power Supplies, five Si4410 N-Channel TrenchFET

MOSFETs, one Si4435 P-Channel TrenchFET Power

MOSFET, and two Si9712 PC Card (PCMCIA) Interface

Switches.

The Si9130 is available in both standard and lead (Pb)-free

28-pin SSOP packages and specified to operate over the

commercial (0 °C to 70 °C) and extended commercial

(- 10 °C to 90 °C) temperature ranges. See Ordering

Information for corresponding part numbers.

FUNCTIONAL BLOCK DIAGRAM

Si9130

SHUTDOWN

5 V ON/OFF

3.3 V ON/OFF

SYNC

Power

Section

3.3 V

5 V

µP

Memory

Peripherals

5.5 V to 30 V