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L7812CV 数据表(PDF) 13 Page - STMicroelectronics

部件名 L7812CV
功能描述  Positive voltage regulator ICs
PDF  58 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L7812CV 数据表(HTML) 13 Page - STMicroelectronics

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Positive voltage regulator ICs
Electrical characteristics
58
VI = 19 V, IO = 1 A, TJ = 0 to 125 °C (L7812AC), TJ = -40 to 125 °C (L7812AB), unless
otherwise specified(e).
e.
Minimum load current for regulation is 5 mA.
Table 7. Electrical characteristics of L7812A
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VO
Output voltage
TJ = 25°C
11.75
12
12.25
V
VO
Output voltage
IO = 5 mA to 1 A, VI = 14.8 to 25 V
11.5
12
12.5
V
VO
Output voltage
IO = 1 A, VI = 25 to 27 V, TJ = 25°C
11.5
12
12.5
V
ΔVO (1) Line regulation
VI = 14.8 to 30 V, IO = 500 mA,
TJ = 25°C
13
120
mV
VI = 16 to 12 V
16
120
mV
VI = 16 to 12 V, TJ = 25°C
6
60
mV
VI = 14.5 to 27 V, TJ = 25°C
13
120
mV
ΔVO (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
ΔIq
Quiescent current change
VI = 15 to 30 V, IO = 500 mA
0.8
mA
VI = 14.8 to 27 V, TJ = 25°C
0.8
mA
IO = 5 mA to 1 A
0.5
mA
SVR
Supply voltage rejection
VI = 15 to 25 V, f = 120 Hz, IO = 500 mA
60
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
18
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
ΔVO/ΔT 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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