參數(shù)資料
型號: LF55AB
廠商: 意法半導體
元件分類: 基準電壓源/電流源
英文描述: VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT
中文描述: 極低降穩(wěn)壓器與抑制研究
文件頁數(shù): 15/34頁
文件大小: 649K
代理商: LF55AB
LF00 SERIES
15/34
ELECTRICAL CHARACTERISTICS FOR LF47C
(refer to the test circuits, T
j
= 25°C, C
I
= 0.1 μF,
C
O
= 2.2
μ
F unless otherwise specified.)
ELECTRICAL CHARACTERISTICS FOR LF50AB
(refer to the test circuits, T
j
= 25°C, C
I
= 0.1 μF,
C
O
= 2.2
μ
F unless otherwise specified.)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
O
Output Voltage
I
O
= 50 mA, V
I
= 6.7 V
I
O
= 50 mA, V
I
= 6.7 V, T
a
= -25 to 85°C
I
O
= 500 mA
4.606
4.512
4.7
4.794
4.888
16
V
V
I
I
O
Operating Input Voltage
Output Current Limit
Line Regulation
Load Regulation
Quiescent Current
V
A
1
4
4
V
O
V
O
I
d
V
I
= 5.7 to 16 V,
V
I
= 6 V,
V
I
= 5.7 to 16V, I
O
= 0mA
V
I
= 6 to 16V,
V
I
= 6 V
I
O
= 5 mA
V
I
= 6.7 ± 1 V
I
O
= 5 mA
I
O
= 5 to 500 mA
23
23
1
12
100
mV
mV
mA
ON MODE
0.5
I
O
= 500mA
OFF MODE
f = 120 Hz
f = 1 KHz
f = 10 KHz
50
77
72
60
50
0.2
0.4
μA
dB
SVR
Supply Voltage Rejection
eN
V
d
Output Noise Voltage
Dropout Voltage
B = 10 Hz to 100 KHz
I
O
= 200 mA
I
O
= 500 mA
T
a
= -40 to 125°C
T
a
= -40 to 125°C
V
I
= 6 V,
μV
V
0.35
0.7
0.8
V
IL
V
IH
I
I
C
O
Control Input Logic Low
Control Input Logic High
Control Input Current
Output Bypass Capacitance ESR = 0.1 to 10
V
V
μA
μF
2
V
C
= 6 V
10
10
I
O
= 0 to 500 mA
2
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
O
Output Voltage
I
O
= 50 mA, V
I
= 7 V
I
O
= 50 mA, V
I
= 7 V, T
a
= -25 to 85°C
I
O
= 500 mA
4.95
4.9
5
5.05
5.1
16
V
V
I
I
O
Operating Input Voltage
Output Current Limit
Line Regulation
Load Regulation
Quiescent Current
V
A
1
5
5
V
O
V
O
I
d
V
I
= 6 to 16 V,
V
I
= 6.3 V,
V
I
= 6 to 16V,
V
I
= 6.3 to 16V, I
O
= 500mA
V
I
= 6 V
I
O
= 5 mA
V
I
= 7 ± 1 V
I
O
= 5 mA
I
O
= 5 to 500 mA
I
O
= 0mA
25
25
1
12
100
mV
mV
mA
ON MODE
0.5
OFF MODE
f = 120 Hz
f = 1 KHz
f = 10 KHz
50
76
71
60
50
0.2
0.4
μA
dB
SVR
Supply Voltage Rejection
eN
V
d
Output Noise Voltage
Dropout Voltage
B = 10 Hz to 100 KHz
I
O
= 200 mA
I
O
= 500 mA
T
a
= -40 to 125°C
T
a
= -40 to 125°C
V
I
= 6 V,
μV
V
0.35
0.7
0.8
V
IL
V
IH
I
I
C
O
Control Input Logic Low
Control Input Logic High
Control Input Current
Output Bypass Capacitance ESR = 0.1 to 10
V
V
μA
μF
2
V
C
= 6 V
10
10
I
O
= 0 to 500 mA
2
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