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參數(shù)資料
| 型號(hào)： | L4964HT |
| 廠商： | STMICROELECTRONICS |
| 元件分類(lèi)： | 穩(wěn)壓器 |
| 英文描述： | 4 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PZFM15 |
| 封裝： | HORIZONTAL, PLASTIC, MULTIWATT-15 |
| 文件頁(yè)數(shù)： | 1/13頁(yè) |
| 文件大小： | 1058K |
| 代理商： | L4964HT |
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L4964
July 2003
HIGH CURRENT SWITCHING REGULATOR
.
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 SYN-
CHRONUS PWM
.
THERMAL SHUTDOWN
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
plas-
tic 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 ex-
ternal filter components.
MULTIWATT15 Vertical
(Plastic Package)
ORDERING NUMBER : L4964
MULTIWATT15 Horizontal
(Plastic Package)
ORDERING NUMBER : L4964HT
Pins 1, 4, 15 must not be connected. Leave open circuit.
PIN CONNECTION (top view)
1/13
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