L4943 Ver la hoja de datos (PDF) - STMicroelectronics
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L4943 Datasheet PDF : 6 Pages
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L4943
ELECTRICAL CHARACTERISTICS (Referred to Test & Application Circuit; VS = 14.4V; Tamb = 25°C;
unless otherwise specified).
Symbol
Parameter
5V STAND-BY
Vout Mem Output Voltage
∆Vline
∆Vload
Vdropout
Line Regulation
Load Regulation
Dropout Voltage
Ilim
Iqst-by
Current Limit
Quiescent Current
ADJUSTABLE REG1 SWITCHED
Voutadj
Output Voltage
∆Vline
∆Vload
Vdropout
Line Regulation
Load Regulation
Dropout Voltage
Ilim
Current Limit
Iq2
Quiescent Current
SVR
Supply Voltage Rejection
EN1 on EN ADJ1 ON
EN1 off EN ADJ1 OFF
ADJUSTABLE REG2 SWITCHED
Voutadj
Output Voltage
∆Vline
∆Vload
Vdropout
Line Regulation
Load Regulation
Dropout Voltage
Ilim
Current Limit
Iq3
SVR
Quiescent Current
Supply Voltage Rejection
EN2H on2 EN ADJ2 ON
EN2H off2 EN ADJ2 OFF
400mA HSD SWITCHED
Vdropout Dropout Voltage
Ilim
Current Limit
Iqhsd
Quiescent Current
EN2 on H EN HSD ON
EN2 off H EN HSD OFF
EN2 Gap EN HSD ON minus EN ADJ2
ON
Test Condition
no load; 1+R1/R2 = 2.4
no load; 1+R1/R2 = 4
no load; 1+R1/R2 = 5.6
no load; 11<Vs<18V
5mA < IO < 500mA
IO = 200mA, VO = 5V
IO = 500mA, VO = 5V
Out short to GND
IO = 100µA; EN1 = EN2 =0
IO = 500mA; EN1 = EN2 = 5V
no load; 1+R3/R4 = 2.4
no load; 1+R3/R4 = 4
no load; 1+R3/R4 = 8.8
no load
5mA < IO < 500mA
IO = 200mA, VO = 5V
IO = 500mA, VO = 5V
IO = 200mA, VO = 11V
IO = 500mA, VO = 11V
Out short to GND
IO = 500mA
f = 0.1 to 10kHz, VO = 5V
no load; 1+R3/R4 = 2.4
no load; 1+R5/R6 = 4
no load; 1+R3/R4 = 8.8
no load
5mA < IO < 500mA
IO = 200mA, VO = 5V
IO = 500mA, VO = 5V
IO = 200mA, VO = 11V
IO = 500mA, VO = 11V
Out short to GND
IO = 500mA
f = 0.1 to 10kHz, VO = 5V
IO = 400mA, 9V < VS < 16V
IO = 400mA
Min. Typ. Max. Unit
2.85
3
3.15
V
4.75
5
5.25
V
6.65
7
7.35
V
5
50
mV
8
80
mV
0.36 0.5
V
0.9 1.25
V
550 800 1000 mA
0.35
0.5
mA
10
25
mA
2.85
4.75
10.45
550
45
2
3
5
11
0.7
8
0.45
1.1
0.4
1
800
10
55
3.15
5.25
11.55
7
80
0.6
1.5
0.55
1.4
1000
25
1
V
V
V
mV/V
mV
V
V
V
V
mA
mA
dB
V
V
2.85
4.75
10.45
550
45
1.3
3
5
11
0.7
12
0.45
1.1
0.4
1
800
10
55
3.15
5.25
11.55
7
80
0.6
1.5
0.55
1.4
1100
25
0.5
V
V
V
mV/V
mV
V
V
V
V
mA
mA
dB
V
V
0.2
0.6
V
0.45 0.65 0.8
A
10
25
mA
2.5
V
1.7
V
1
V
3/6
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