SI9130 Datasheet, PDF (1/13 Pages) Vishay Siliconix – Pin-Programmable Dual Controller-Portable PCs

Si9130
Vishay Siliconix
Pin-Programmable Dual Controller—Portable PCs
FEATURES
D Fixed 5-V and Programmable 3.3-V, 3.45 V, or 3.6 V Step-Down
Converters
D Less than 500-mA Quiescent Current per Converter
D 25-mA Shutdown Current
D 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 TrenchFETr Power
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
5.5 V to 30 V
SHUTDOWN
5-V ON/OFF
3.3-V ON/OFF
SYNC
Si9130
Power
Section
3.3 V
5V
mP
Memory
Peripherals
Document Number: 70190
S-40805—Rev. F, 26-Apr-04
www.vishay.com
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