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參數(shù)資料
| 型號(hào)： | L7820 |
| 廠商： | 意法半導(dǎo)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(yè)數(shù)： | 15/52頁(yè) |
| 文件大?。?/td> | 1800K |
| 代理商： | L7820 |
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L78xx - L78xxC
Electrical characteristics
15/52
Table 8.
Electrical characteristics of L7815
(refer to the test circuits, T
J
= -55 to 150°C, V
I
= 23 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
= 18.5 to 30 V
14.4
15
15.6
V
V
O
Output voltage
14.25
15
15.75
V
Δ
V
O(1)
Line regulation
V
I
= 17.5 to 30 V, T
J
= 25°C
150
mV
V
I
= 20 to 26 V, T
J
= 25°C
75
Δ
V
O(1)
Load regulation
I
O
= 5 mA to 1.5 A, T
J
= 25°C
150
mV
I
O
= 250 to 750 mA, T
J
= 25°C
75
I
d
Quiescent current
T
J
= 25°C
6
mA
Δ
I
d
Quiescent current change
I
O
= 5 mA to 1 A
0.5
mA
V
I
= 18.5 to 30 V
0.8
Δ
V
O
/
Δ
T
Output voltage drift
I
O
= 5 mA
1.8
mV/°C
eN
Output noise voltage
B =10 Hz to 100 KHz, T
J
= 25°C
40
μV/V
O
SVR
Supply voltage rejection
V
I
= 18.5 to 28.5 V, f = 120 Hz
60
dB
V
d
Dropout voltage
I
O
= 1 A, T
J
= 25°C
2
2.5
V
R
O
Output resistance
f = 1 KHz
19
m
Ω
I
sc
Short circuit current
V
I
= 35 V, T
J
= 25°C
0.75
1.2
A
I
scp
Short circuit peak current
T
J
= 25°C
1.3
2.2
3.3
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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