SI9130_11 Datasheet, PDF (1/15 Pages) Vishay Siliconix – Pin-Programmable Dual Controller - Portable PCs

Not recommended for new designs, please refer to Si786
Si9130
Vishay Siliconix
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^® Power
FUNCTIONAL BLOCK DIAGRAM
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.
5.5 V to 30 V
SHUTDOWN
5 V ON/OFF
3.3 V ON/OFF
SYNC
Si9130
Power
Section
3.3 V
5V
µP
Memory
Peripherals
Document Number: 70190
www.vishay.com
S11-0975-Rev. G, 16-May-11
1
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000