L4964 数据手册 ( 数据表 ) - STMicroelectronics

DESCRIPTION
The L4964 is a stepdown power switching regulator delivering4A at a voltage variable from 5.1V to 28V. Features of the device include overload protection, soft start, remote inhibit, thermal protection, a reset outputfor microprocessors and a PWM comparator input for synchronization in multichipconfigurations.
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 reductionin the size and cost of external filter components.

. 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