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L4962EH Datasheet

  • L4962EH

  • 1.5A POWER SWITCHING REGULATOR

  • 15頁

  • STMICROELECTRONICS   STMICROELECTRONICS

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L4962
1.5A POWER SWITCHING REGULATOR
1.5A OUTPUT CURRENT
5.1V TO 40V OUTPUT VOLTAGE RANGE
PRECISE (鹵 2%) ON-CHIP REFERENCE
HIGH SWITCHING FREQUENCY
VERY HIGH EFFICIENCY (UP TO 90%)
VERY FEW EXTERNAL COMPONENTS
SOFT START
INTERNAL LIMITING CURRENT
THERMAL SHUTDOWN
POWERDIP
(12 + 2 + 2)
HEPTAWATT
ORDERING NUMBERS
: L4962/A (12 + 2 + 2 Powerdip)
L4962E/A (Heptawatt)
L4962EH/A (Horizontal
Heptawatt)
DESCRIPTION
The L4962 is a monolithic power switching regula-
tor delivering 1.5A at a voltage variable from 5V to
40V in step down configuration.
Features of the device include current limiting, soft
start, thermal protection and 0 to 100% duty cycle
for continuous operating mode.
The L4962is mountedin a 16-lead Powerdip plastic
package and Heptawatt package and requires very
few external components.
Efficient operation at switching frequencies up to
150KHz allows a reduction in the size and cost of
external filter components.
BLOCK DIAGRAM
Pin X = Powerdip
Pin (X) = Heptawatt
March 1996
1/15

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