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參數資料
| 型號： | L4964HT |
| 廠商： | 意法半導體 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Isolated Flyback Switching Regulator with 9V Output |
| 中文描述： | 隔離反激式開關穩壓9V輸出 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 208K |
| 代理商： | L4964HT |
L4964
April1993
HIGH CURRENT SWITCHING REGULATOR
5.1 V TO 28 V OUTPUT VOLTAGERANGE
.
0 TO 100 % DUTY CYCLE RANGE
.
PRECISE(
±
3 %) ON-CHIP REFERENCE
.
SWITCHING FREQUENCY UP TO 120KHz
.
VERYHIGH EFFICIENCY (UP TO 90 %)
.
VERYFEW EXTERNAL COMPONENTS
.
SOFT START
.
RESETOUTPUT
.
CURRENT LIMITING
.
INPUT FOR REMOTE INHIBIT AND SYN-
CHRONUS PWM
.
THERMAL SHUTDOWN
.
4 AOUTPUT CURRENT
DESCRIPTION
TheL4964is astepdownpowerswitchingregulator
delivering4Aatavoltagevariablefrom5.1Vto28V.
Featuresof the device include overload protection,
soft start,remote inhibit,thermal protection,a reset
outputformicroprocessorsand a PWM comparator
inputforsynchronizationinmultichipconfigurations.
TheL4964ismountedina15-leadMultiwatt
plas-
tic power package and requires very few external
components.
Efficient operation at switching frequencies up to
120kHzallowsareductioninthesizeandcostofex-
ternalfilter components.
MULTIWATT15 Vertical
(PlasticPackage)
ORDERING NUMBER : L4964
MULTIWATT15 Horizontal
(PlasticPackage)
ORDERING NUMBER : L4964HT
Pins1,4, 15 must not be connected. Leave open circuit.
PIN CONNECTION
(top view)
1/13
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