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L7808AC 数据表(PDF) 10 Page - STMicroelectronics

部件名 L7808AC
功能描述  Positive voltage regulators
Download  56 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L7808AC 数据表(HTML) 10 Page - STMicroelectronics

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Electrical characteristics
L78xx, L78xxC, L78xxAB, L78xxAC
10/56
Doc ID 2143 Rev 22
VI = 10 V, IO = 1 A, TJ = 0 to 125 °C (L7805AC), TJ = -40 to 125 °C (L7805AB), unless
otherwise specified.
Table 5.
Electrical characteristics of L7805A
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
TJ = 25°C
4.9
5
5.1
V
VO
Output voltage
IO = 5 mA to 1 A, VI = 7.5 to 18 V
4.8
5
5.2
V
VO
Output voltage
IO = 1 A, VI = 18 to 20 V, TJ = 25°C
4.8
5
5.2
V
ΔV
O
(1)
Line regulation
VI = 7.5 to 25 V, IO = 500 mA
7
50
mV
VI = 8 to 12 V
10
50
mV
VI = 8 to 12 V, TJ = 25°C
2
25
mV
VI = 7.3 to 20 V, TJ = 25°C
7
50
mV
ΔV
O
(1)
Load regulation
IO = 5 mA to 1 A
25
100
mV
IO = 5 mA to 1.5 A, TJ = 25°C
30
100
V
IO = 250 to 750 mA
8
50
V
Iq
Quiescent current
TJ = 25°C
4.3
6
mA
6mA
ΔI
q
Quiescent current change
VI = 8 to 23 V, IO = 500 mA
0.8
mA
VI = 7.5 to 20 V, TJ = 25°C
0.8
mA
IO = 5 mA to 1 A
0.5
mA
SVR
Supply voltage rejection
VI = 8 to 18 V, f = 120 Hz, IO = 500 mA
68
dB
Vd
Dropout voltage
IO = 1 A, TJ = 25°C
2
V
eN
Output noise voltage
TA = 25°C, B =10 Hz to 100 kHz
10
µV/VO
RO
Output resistance
f = 1 kHz
17
m
Ω
Isc
Short circuit current
VI = 35 V, TA = 25°C
0.2
A
Iscp
Short circuit peak current
TJ = 25°C
2.2
A
ΔV
O/ΔT
Output voltage drift
-1.1
mV/°C
1.
Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be
taken into account separately. Pulse testing with low duty cycle is used.


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