參數(shù)資料
型號: L4989D
廠商: 意法半導體
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): 2/10頁
文件大?。?/td> 584K
代理商: L4989D
L4989
2/10
PIN DESCRIPTION
PIN CONNECTIONS
N. (SO8)
N. (SO20)
NAME
FUNCTION
1
1
WEn
Watchdog enable input.
If high it activates the watchdog operation.
2
4
gnd
Ground reference
5,6,15,16
gnd
Ground
Connected these pins to a heat spreader ground
3
7
Res
Reset output.
It is pulled down when output voltage goes below Vo_th or
frequency at Wi is too low.
4
10
Vcr
Reset timing adjust.
A capacitor between Vcr pin and gnd, sets the reset delay time
(trd)
5
11
Vcw
Watchdog timer adjust
A capacitor between Vcw pin and gnd, sets the time response of
the watchdog monitor.
6
14
Wi
Watchdog input.
If the frequency at this input pin is too low, the Reset output is
activated.
7
17
Vo
Voltage regulator output
Block to ground with a capacitor >100nF (needed for regulator
stability)
8
20
Vs
Supply voltage
Block to ground directly at IC pin with a ceramic capacitor
2,3,8,9,12,
13,18,19
N. C.
not connected
V
EN
GND
RES
V
CR
V
CW
W
I
V
O
V
S
1
3
2
4
6
5
7
8
D04AT515
V
EN
N.C.
N.C.
GND
GND
RES
GND
N.C.
N.C.
N.C.
N.C.
W
I
GND
GND
V
O
N.C.
N.C.
V
S
1
3
2
4
5
6
7
8
9
18
17
16
15
14
12
13
11
19
10
20
V
CR
W
CW
D04AT516
SO8
SO20
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相關代理商/技術參數(shù)
參數(shù)描述
L4989D013TR 功能描述:低壓差穩(wěn)壓器 - LDO BODY SMARTPOWER RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓(最大值):307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
L4989MD 功能描述:低壓差穩(wěn)壓器 - LDO LW PWR VOLT REGULATR RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓(最大值):307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
L4989MD013TR 功能描述:低壓差穩(wěn)壓器 - LDO BODY SMARTPOWER RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓(最大值):307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
L4990 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PRIMARY CONTROLLER
L4990A 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:PRIMARY CONTROLLER