L5957 Просмотр технического описания (PDF) - STMicroelectronics
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L5957 Datasheet PDF : 16 Pages
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L5957
Electrical specifications
Table 4. Electrical characteristics (continued)
Symbol
Parameter
Test condition
Min. Typ. Max. Unit
Regulator 1
Vo (REG 1) Output voltage 8.5 V
-
8
8.5
9
V
ΔV
Line regulation
Vin1 = 10 to 18 V; I = 500 mA -
Vin1 = 9.3 to 18 V; I = 10 mA
-
-
50
mV
-
50
mV
ΔVi
Load regulation
Ireg1 = 1 to 500 mA
-
-
100 mV
Iq
Quiescent current
Ireg1 = 10 mA
-
-
5
mA
PSRR
Vdrop
Supply voltage ripple rejection
Drop out voltage
f = 1 kHz; Vin1 = 1.5 Vpp;
Io = 500 mA
Ireg1 = 500 mA (1)
50
-
-
dB
-
-
0.6
V
Im
Current limit
Rshort = 0.5 Ω
0.6
-
1.2
A
Regulator 2
Vo (ST BY) Output voltage 5 V
-
4.7
5
5.3
V
ΔV
Line regulation
Vin1 = 7 to 18 V; I = 300 mA
-
Vin1 = 6 to 18 V; I = 10 mA
-
-
50
mV
-
50
mV
ΔVi
Load regulation
Ireg2 = 1 to 300 mA
-
-
100 mV
Iq
Quiescent Current
Ireg2 = 10 mA
-
-
3
mA
PSRR
Vdrop
Supply voltage ripple rejection
Drop out voltage
f = 1 kHz; Vin1 = 1.5 Vpp;
Io = 300 mA
Ireg2 = 300 mA (1)
Ireg2 = 100 mA (1)
50
-
-
dB
-
-
1.5
V
-
-
0.6
V
Im
Current limit
Rshort = 0.5 Ω
400
-
800 mA
Regulator 3
Vo (REG 3) Output voltage 5V
-
4.75
5
5.25
V
ΔV
Line regulation
Vin2 = 7 to 18 V; I = 800 mA
-
Vin2 = 6 to 18 V; I = 10 mA
-
-
50
mV
-
50
mV
ΔVi
Load regulation
Ireg3 = 1 to 800 mA
-
-
100 mV
Iq
Quiescent current
Ireg3 = 10 mA
-
-
5
mA
PSRR
Vdrop
Supply voltage ripple rejection
Drop out voltage
f = 1 kHz; Vin1 = 1.5 Vpp;
Io = 800 mA
Ireg3 = 800 mA (1)
50
-
-
dB
-
-
1.5
V
Im
Current limit
Rshort = 0.5 Ω
1
-
2
A
Regulator 4
Vo (REG 4)
ΔV
ΔV
Output voltage 3.3V
Line regulation
Line regulation
-
3.10 3.3 3.50
V
Vin2 = 6 to 18 V; I = 800 mA
-
Vin2 = 6 to 18 V; I = 10 mA
-
-
50
mV
-
50
mV
Doc ID 14442 Rev 2
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