參數(shù)資料
型號(hào)： μA7812
廠商： Texas Instruments, Inc.
英文描述： General Purpose, High Current Positive-Voltage Regulator(12V，通用大電流正電壓穩(wěn)壓器)
中文描述： 通用，高電流正電壓穩(wěn)壓器（12V的，通用大電流正電壓穩(wěn)壓器）
文件頁(yè)數(shù)： 12/19頁(yè)
文件大小： 481K
代理商： ΜA7812
μ
A7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056B – MAY 1976 – REVISED OCTOBER 1996
12
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, V
I
= 17 V, I
O
= 500 mA, T
J
= 25
°
C
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
μ
A7810Y
TYP
UNIT
MIN
MAX
Output voltage
10
7
2
71
12
4
V
Input voltage regulation
VI = 12.5 V to 28 V
VI = 14 V to 20 V
VI = 13 V to 23 V,
IO = 5 mA to 1.5 A
IO = 250 mA to 750 mA
f = 1 kHz
IO = 5 mA
f = 10 Hz to 100 kHz
IO = 1 A
mV
Ripple rejection
f = 120 Hz
dB
Output voltage regulation
mV
Output resistance
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
Bias current
Short-circuit output current
Peak output current
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-
μ
F capacitor across the input and a 0.1-
μ
F capacitor across the output.
This specification applies only for dc power dissipation permitted by absolute maximum ratings.
0.018
–1
70
mV/
°
C
μ
V
V
mA
mA
A
2
4.3
400
2.2
electrical characteristics at specified virtual junction temperature, V
I
= 19 V, I
O
= 500 mA, T
J
= 25
°
C
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
μ
A7812Y
TYP
UNIT
MIN
MAX
Output voltage
12
10
3
71
12
4
V
Input voltage regulation
VI = 14.5 V to 30 V
VI = 16 V to 22 V
VI = 15 V to 25 V,
IO = 5 mA to 1.5 A
IO = 250 mA to 750 mA
f = 1 kHz
IO = 5 mA
f = 10 Hz to 100 kHz
IO = 1 A
mV
Ripple rejection
f = 120 Hz
dB
Output voltage regulation
mV
Output resistance
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
Bias current
Short-circuit output current
Peak output current
Pulse-testing techniques maintain the junction temperature as close to the ambient temperature as possible. Thermal effects must be taken into
account separately. All characteristics are measured with a 0.33-
μ
F capacitor across the input and a 0.1-
μ
F capacitor across the output.
This specification applies only for dc power dissipation permitted by absolute maximum ratings.
0.018
–1
75
mV/
°
C
μ
V
V
mA
mA
A
2
4.3
350
2.2
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