L4987 View Datasheet(PDF) - STMicroelectronics
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L4987 Datasheet PDF : 11 Pages
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L4987 SERIES
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
2.94
3
3.06
V
Io = 200 mA, Vi = 6 V -40<TJ<125 oC 2.88
3.12
V
Vi Operating Input Voltage
Io = 200 mA
3.62
18
V
Io ut 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
mA
1.5
6
mA
OFF MODE Vi = 12 V
90
1 80
µA
SVR Supply Voltage Rejection
Io = 5 mA Vi = 5.3 V ± 1V
f = 120 Hz
f = 1 KHz
f = 10 KHz
80
dB
75
dB
60
dB
Vd Dropout Voltage
Vil Control Input Logic Low
Vih Control Input Logic High
Io = 200 mA
Io = 200 mA -40 < TJ < 125 oC
-40 < TJ < 125 oC
-40 < TJ < 125 oC
0.25 0.5
V
0.7
V
0.8
V
2
V
Ii Control Input Current
10
µA
CO Output Bypass Capacitance ESR = 0.5 to 10 Ω Io = 0 to 200 mA
2
10
µF
-40 < TJ < 125 oC
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
3/11
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