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L4987 数据表(PDF) 3 Page - STMicroelectronics

部件名 L4987
功能描述  VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT AND DROPOUT CONTROL FLAG
PDF  11 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L4987 数据表(HTML) 3 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS FOR L4987CPT30 (refer to the test circuits, VI =6 V,
IOUT = 5 mA, Tj =25
oC, Ci = 0.1
µF, Co = 2.2 µF unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Vo
Output Voltage
Io = 200 mA, Vi =6 V
Io = 200 mA, Vi = 6 V -40<TJ<125
oC
2.94
2.88
33.06
3.12
V
V
Vi
Operating Input Voltage
Io = 200 mA
3.62
18
V
Iout
Output Current Limit
250
A
∆Vo
Line Regulation
Vi = 4.3 to 18 V, Io = 0.5 mA
2.4
14
mV
∆Vo
Load Regulation
Vi = 4.1 V
Io = 0.5 to 200 mA
3
20
mV
Id
Quiescent Current
ON MODE
Vi = 4.3 to 18 V Io =0 mA
Vi = 4.3 to 18 V Io = 200 mA
0.7
1.5
1
6
mA
mA
OFF MODE Vi =12 V
90
180
µA
SVR
Supply Voltage Rejection
Io = 5 mA Vi = 5.3 V
± 1V
f = 120 Hz
f= 1 KHz
f = 10 KHz
80
75
60
dB
dB
dB
Vd
Dropout Voltage
Io = 200 mA
Io = 200 mA
-40 < TJ < 125
oC
0.25
0.5
0.7
V
V
Vil
Control Input Logic Low
-40 < TJ < 125
oC0.8
V
Vih
Control Input Logic High
-40 < TJ < 125
oC2
V
Ii
Control Input Current
10
µA
CO
Output Bypass Capacitance
ESR = 0.5 to 10
Ω Io = 0 to 200 mA
-40 < TJ < 125
oC
210
µF
Vfl
Control Flag Output Low
Vi -Vo <Vcesat power,
Ifl =6 mA
Io = 200 mA
0.5
V
Ifh
Control Flag Output High
Leakage Current
Vi > 3.62 V
Voh =15 V
10
µA
L4987 SERIES
3/11



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