L4964| Datasheet

L4964, L4964HT

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L4964
HIGH CURRENT SWITCHING REGULATOR

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4 A OUTPUT CURRENT 5.1 V TO 28 V OUTPUT VOLTAGE RANGE 0 TO 100 % DUTY CYCLE RANGE PRECISE ( 3 %) ON-CHIP REFERENCE SWITCHING FREQUENCY UP TO 120 KHz VERY HIGH EFFICIENCY (UP TO 90 %) VERY FEW EXTERNAL COMPONENTS SOFT START RESET OUTPUT CURRENT LIMITING INPUT FOR REMOTE INHIBIT AND SYNCHRONUS PWM THERMAL SHUTDOWN

MULTIWATT15 Vertical (Plastic Package) ORDERING NUMBER : L4964

DESCRIPTION The L4964 is a stepdown power switching regulator delivering 4A at a voltage variable from 5.1V to 28V. Features of the device include overload protection, soft start, remote inhibit, thermal protection, a reset output for microprocessors and a PWM comparator input for synchronization in multichip configurations. The L4964 is mounted in a 15-lead Multiwatt plastic power package and requires very few external components. Efficient operation at switching frequencies up to 120kHz allows a reduction in the size and cost of external filter components. PIN CONNECTION (top view)

MULTIWATT15 Horizontal (Plastic Package) ORDERING NUMBER : L4964HT

Pins 1, 4, 15 must not be connected. Leave open circuit.

July 2003

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