L4954 查看數據表（PDF） - STMicroelectronics
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L4954 Datasheet PDF : 13 Pages
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L4954
Electrical specifications
2.4
Electrical characteristics
Refer to the Figure 3: Application circuit, VS = 14.4 V; Tamb = 25 °C; IOUT10 = 5 mA; IOUT8.5
= 5 mA; IOUT5 = 5 mA; IOUT5 ST-BY = 0.5 mA; RHSD1 = 16 Ω, RHSD2,3 = 107 Ω, unless
otherwise specified.
Table 4. Electrical characteristics
Symbol
Parameter
Test condition
Min.
VS
Operating supply voltage
Iq
Maximum quiescent current
Iq,ST-BY Standby quiescent current
VENL
VENH
EN1, EN2, EN3 input low
voltage
EN1, EN2, EN3 input high
voltage (outputs active)
-
11
IOUT10 = 40 mA; IOUT8.5 = 175 mA;
IOUT5 = 650 mA;
IOUT5ST-BY = 100mA; RHSD1 = 8 Ω;
-
RHSD2,3 = 53 Ω
EN1, EN2, EN3 = 0
IOUT5, ST-BY = 50 mA
-
EN1, EN2, EN3 = 0
IOUT5, ST-BY = 2 mA
-
-
0
-
2
10 V / 40 mA reg 1 output
VOUT10 Output voltage
IOUT10 = 40 mA
-
ΔVline Line regulation
VS = 11 to 26 V
-
ΔVload Load regulation
IOUT10 = 5 to 40 mA
-
VDROPOUT Dropout voltage
VS = VOUT10 + 0.1 V
IOUT10 = 5 mA
-
VS = VOUT10 + 0.5 V
IOUT10 = 40 mA
-
Iq1
Reg 1 quiescent current
IOUT10 = 5 mA
-
IOUT10 = 40 mA
-
Ilim1 Current limit
-
-
SVR1
Reg 1 supply voltage rejection
f = 0.12 to 10 kHz; IOUT10 = 25
mA; VRIP =1 Vpp
-
8.5V / 175 mA reg 2 output
VOUT8.5 Output voltage
IOUT8.5 = 175 mA
-
ΔVline Line regulation
VS = 11 to 26 V
-
ΔVload Load regulation
IOUT8.5 = 5 to 175 mA
-
VDROPOUT Dropout voltage
VS = VOUT8.5 + 0.3 V
IOUT8.5 = 5 mA
-
VS = VOUT8.5 +1 V
IOUT8.5 = 175 mA
-
Typ.
-
10
420
300
-
-
10
2
2
100
500
7
7
100
55
8.5
2
10
300
-
Max. Unit
16
V
- mA
- mA
- mA
0.8 V
5
V
-
V
- mV
- mV
200 mV
600 mV
- mA
- mA
- mA
-
dB
-
V
- mV
- mV
400 mV
1.1 V
Doc ID 17719 Rev 1
7/13
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