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L7805 数据表(PDF) 15 Page - STMicroelectronics

部件名 L7805
功能描述  Positive voltage regulator ICs
PDF  57 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L7805 数据表(HTML) 15 Page - STMicroelectronics

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L78xx, L78xxC, L78xxAB, L78xxAC
Electrical characteristics
VI = 23 V, IO = 1 A, TJ = 0 to 125 °C (L7815AC), TJ = -40 to 125 °C (L7815AB), unless
otherwise specified.
Table 10. Electrical characteristics of L7815A
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
TJ = 25°C
14.7
15
15.3
V
VO
Output voltage
IO = 5 mA to 1 A, VI = 17.9 to 28 V
14.4
15
15.6
V
VO
Output voltage
IO = 1 A, VI = 28 to 30 V, TJ = 25°C
14.4
15
15.6
V
V
O
(1)
Line regulation
VI = 17.9 to 30 V, IO = 500 mA,
TJ = 25°C
13
150
mV
VI = 20 to 26 V
16
150
mV
VI = 20 to 26 V, TJ = 25°C
6
75
mV
VI = 17.5 to 30 V, TJ = 25°C
13
150
mV
V
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
IO = 250 to 750 mA
10
50
Iq
Quiescent current
TJ = 25°C
4.4
6
mA
6mA
I
q
Quiescent current change
VI = 17.5 to 30 V, IO = 500 mA
0.8
mA
VI = 17.5 to 30 V, TJ = 25°C
0.8
mA
IO = 5 mA to 1 A
0.5
mA
SVR
Supply voltage rejection
VI = 18.5 to 28.5 V, f = 120 Hz,
IO = 500 mA
58
dB
Vd
Dropout voltage
IO = 1 A, TJ = 25°C
2
V
eN
Output noise voltage
TA = 25°C, B = 10Hz to 100 kHz
10
µV/VO
RO
Output resistance
f = 1 kHz
19
m
Isc
Short circuit current
VI = 35 V, TA = 25°C
0.2
A
Iscp
Short circuit peak current
TJ = 25°C
2.2
A
V
O/T
Output voltage drift
-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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