SM645 Datasheet PDF


Part Number

SM645

Description

SWITCHING REGULATOR POWER OUTPUT STAGES

Manufacture

LINFINITY

Total Page 4 Pages
PDF Download
Download SM645 Datasheet PDF


Features Datasheet pdf SM645/SM646/SM647 SWITCHING REGULATOR P OWER OUTPUT STAGES DESCRIPTION FEATUR ES The SM645/646/647 series of Power O utput Stages are especially designed to be driven with standard PWM integrated circuits to form an efficient switchin g power supply. The SM645, SM646 and SM 647 are optimized for non-isolated Buck and Buck-Boost application. The hybrid circuit construction utilizes thick fi lm resistors on a beryllia substrate fo r maximum thermal conductivity and resu ltant low thermal impedance. All of the active elements in the hybrid are full y passivated. • Equivalent to the Un itrode PIC 645, 646, 647 • 15A curren t capability • Cost saving design red uces size, improves efficiency, reduces no.
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SM645 Datasheet
SM645/SM646/SM647
SWITCHING REGULATOR
POWER OUTPUT STAGES
DESCRIPTION
FEATURES
The SM645/646/647 series of Power Output Stages are espe-
cially designed to be driven with standard PWM integrated
circuits to form an efficient switching power supply. The SM645,
SM646 and SM647 are optimized for non-isolated Buck and
Buck-Boost application. The hybrid circuit construction utilizes
thick film resistors on a beryllia substrate for maximum thermal
conductivity and resultant low thermal impedance. All of the
active elements in the hybrid are fully passivated.
Equivalent to the Unitrode PIC 645, 646, 647
15A current capability
Cost saving design reduces size, improves efficiency,
reduces noise and RFI
High operating frequency (to > 100KHz) results in
smaller inductor-capacitor filter and improved power
supply response time
High operating efficiency at 7A typical performance -
Rise and fall time < 300ns
Efficiency > 85%
HIGH RELIABILITY FEATURES
Available with high reliability processing
FUNCTIONAL DIAGRAM
SM645/SM646/SM647
4/90 Rev 1.1 2/94
Copyright © 1994
LINFINITY Microelectronics Inc.
1 11861 Western Avenue Garden Grove, CA 92841
(714) 898-8121 FAX: (714) 893-2570




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