L296 Datasheet, PDF (1/22 Pages) STMicroelectronics – HIGH CURRENT SWITCHINGREGULATORS

L296
®
L296P
HIGH CURRENT SWITCHING REGULATORS
. 4 A OUTPUT CURRENT
. 5.1 V TO 40 V OUTPUT VOLTAGE RANGE
. 0 TO 100 % DUTY CYCLE RANGE
. PRECISE (±2 %) ON-CHIP REFERENCE
. SWITCHING FREQUENCY UP TO 200 KHz
. VERY HIGH EFFICIENCY (UP TO 90 %)
. VERY FEW EXTERNAL COMPONENTS
. SOFT START
. RESET OUTPUT
. EXTERNAL PROGRAMMABLE LIMITING
CURRENT (L296P)
. CONTROL CIRCUIT FOR CROWBAR SCR
. INPUT FOR REMOTE INHIBIT AND
SYNCHRONUS PWM
. THERMAL SHUTDOWN
Multi watt^®
(15 lead)
ORDERING NUMBERS :
L296 (Vertical)
L296HT (Horizontal)
L296P (Vertical)
L296PHT (Horizontal)
DESCRIPTION
The L296 andL296P are stepdownpowerswitching
regulators delivering 4 A at a voltage variable from
5.1 V to 40 V.
Featuresof the devices includesoft start, remotein-
hibit, thermal protection, a reset output for micro-
processors and a PWM comparator input for syn-
chronization in multichip configurations.
The L296P incudes external programmable limiting
current.
The L296 and L296P are mounted in a 15-lead Mul-
tiwatt® plasticpowerpackageand requiresvery few
external components.
Efficient operation at switching frequencies up to
200 KHz allows a reduction in the size and cost of
external filter components. A voltage sense input
and SCR drive output are provided for optional
crowbar overvoltage protection with an external
SCR.
PIN CONNECTION (top view)
June 2000
1/22