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參數(shù)資料
| 型號： | L4989 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | LOW POWER VOLTAGE REGULATOR |
| 中文描述： | 低電源電壓調(diào)節(jié)器 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 584K |
| 代理商： | L4989 |
1/10
L4989
March 2004
This is preliminary information on a new product now in development. Details are subject to change without notice.
■
OPERATING DC SUPPLY VOLTAGE RANGE
5.6V TO 31V
■
VERY LOW QUIESCENT CURRENT WITH
WATCHDOG DISABLED
■
PRECISION OUTPUT VOLTAGE (3%)
■
LOW-DROP VOLTAGE
(180mV typ at I
o
= 150mA)
■
RESET CIRCUIT SENSING THE OUTPUT
VOLTAGE DOWN TO 1V
■
PROGRAMMABLE RESET DELAY WITH
EXTERNAL CAPACITOR
■
WATCHDOG DISABLE INPUT
■
PROGRAMMABLE WATCHDOG TIMER WITH
EXTERNAL CAPACITOR
■
THERMAL SHUTDOWN AND SHORT
CIRCUIT PROTECTION
■
WIDE TEMPERATURE RANGE (T
j
= -40°C TO
150°C)
ORDERING NUMBERS:
L4989D (SO8)
L4989 (SO20)
SO20
SO8
PRODUCT PREVIEW
LOW POWER VOLTAGE REGULATOR
BLOCK DIAGRAM
t
watchdog
Vs
Vi
Wi
Vcw
Vcr
Ctr
Ctw
Res
WE
gnd
Vo
Co
Reference
Reset
Start up
100mV
+
1.25V
Voltage
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