參數(shù)資料
型號: L7808
廠商: 意法半導體
英文描述: Positive Voltage Regulators(三端穩(wěn)壓器)
中文描述: 正電壓調(diào)節(jié)器(三端穩(wěn)壓器)
文件頁數(shù): 23/52頁
文件大?。?/td> 1800K
代理商: L7808
L78xx - L78xxC
Electrical characteristics
23/52
Table 16.
Electrical characteristics of L7885C
(refer to the test circuits, T
J
= 0 to 150°C, V
I
= 14.5 V,
I
O
= 500 mA, C
I
= 0.33 μF, C
O
= 0.1 μF unless otherwise specified)
Parameter
Test conditions
Symbol
Min.
Typ.
Max.
Unit
V
O
Output voltage
T
J
= 25°C
I
O
= 5 mA to 1 A, P
O
15 W
V
I
= 11 to 26 V
8.2
8.5
8.8
V
V
O
Output voltage
8.1
8.5
8.9
V
Δ
V
O(1)
Line regulation
V
I
= 11 to 27 V, T
J
= 25°C
160
mV
V
I
= 11.5 to 17.5 V, T
J
= 25°C
80
Δ
V
O(1)
Load regulation
I
O
= 5 mA to 1.5 A, T
J
= 25°C
160
mV
I
O
= 250 to 750 mA, T
J
= 25°C
80
I
d
Quiescent current
T
J
= 25°C
8
mA
Δ
I
d
Quiescent current change
I
O
= 5 mA to 1 A
0.5
mA
V
I
= 11 to 27 V
1
Δ
V
O
/
Δ
T
Output voltage drift
I
O
= 5 mA
-0.8
mV/°C
eN
Output noise voltage
B =10 Hz to 100 KHz, T
J
= 25°C
55
μV/V
O
SVR
Supply voltage rejection
V
I
= 12 to 22V, f = 120Hz
56
dB
V
d
Dropout voltage
I
O
= 1 A, T
J
= 25°C
2
V
R
O
Output resistance
f = 1 KHz
16
m
Ω
I
sc
Short circuit current
V
I
= 35 V, T
J
= 25°C
0.45
A
I
scp
Short circuit peak current
T
J
= 25°C
2.2
A
1.
Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.
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