參數(shù)資料
型號: L4943
廠商: 意法半導體
英文描述: MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO
中文描述: 多功能穩(wěn)壓器以便汽車收音機
文件頁數(shù): 3/6頁
文件大?。?/td> 113K
代理商: L4943
ELECTRICAL CHARACTERISTICS
(Referred to Test & Application Circuit; V
S
= 14.4V; T
amb
= 25°C;
unless otherwise specified).
Symbol
5V STAND-BY
V
out Mem
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Output Voltage
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 < I
O
< 500mA
I
O
= 200mA, V
O
= 5V
I
O
= 500mA, V
O
= 5V
Out short to GND
I
O
= 100
μ
A; EN1 = EN2 =0
I
O
= 500mA; EN1 = EN2 = 5V
2.85
4.75
6.65
3
5
7
5
8
3.15
5.25
7.35
50
80
0.5
1.25
1000
0.5
25
V
V
V
V
line
V
load
V
dropout
Line Regulation
Load Regulation
Dropout Voltage
mV
mV
V
V
mA
mA
mA
0.36
0.9
800
0.35
10
I
lim
I
qst-by
Current Limit
Quiescent Current
550
ADJUSTABLE REG1 SWITCHED
V
outadj
Output Voltage
no load; 1+R3/R4 = 2.4
no load; 1+R3/R4 = 4
no load; 1+R3/R4 = 8.8
no load
5mA < I
O
< 500mA
I
O
= 200mA, V
O
= 5V
I
O
= 500mA, V
O
= 5V
I
O
= 200mA, V
O
= 11V
I
O
= 500mA, V
O
= 11V
Out short to GND
I
O
= 500mA
f = 0.1 to 10kHz, V
O
= 5V
2.85
4.75
10.45
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
V
V
V
V
line
V
load
V
dropout
Line Regulation
Load Regulation
Dropout Voltage
mV/V
mV
V
V
V
V
mA
mA
dB
V
V
I
lim
I
q2
SVR
EN1 on
EN1 off
ADJUSTABLE REG2 SWITCHED
V
outadj
Output Voltage
Current Limit
Quiescent Current
Supply Voltage Rejection
EN ADJ1 ON
EN ADJ1 OFF
550
45
2
1
no load; 1+R3/R4 = 2.4
no load; 1+R5/R6 = 4
no load; 1+R3/R4 = 8.8
no load
5mA < I
O
< 500mA
I
O
= 200mA, V
O
= 5V
I
O
= 500mA, V
O
= 5V
I
O
= 200mA, V
O
= 11V
I
O
= 500mA, V
O
= 11V
Out short to GND
I
O
= 500mA
f = 0.1 to 10kHz, V
O
= 5V
2.85
4.75
10.45
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
V
V
V
V
line
V
load
V
dropout
Line Regulation
Load Regulation
Dropout Voltage
mV/V
mV
V
V
V
V
mA
mA
dB
V
V
I
lim
I
q3
SVR
Current Limit
Quiescent Current
Supply Voltage Rejection
EN ADJ2 ON
EN ADJ2 OFF
550
45
1.3
EN2H on2
EN2H off2
400mA HSD SWITCHED
V
dropout
I
lim
I
qhsd
EN2 on H
EN2 off H
EN2 Gap
0.5
Dropout Voltage
Current Limit
Quiescent Current
EN HSD ON
EN HSD OFF
EN HSD ON minus EN ADJ2
ON
I
O
= 400mA, 9V < V
S
< 16V
0.2
0.65
10
0.6
0.8
25
V
A
0.45
I
O
= 400mA
mA
V
V
V
2.5
1.7
1
L4943
3/6
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