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參數(shù)資料
| 型號： | 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） |
| 文件頁數(shù)： | 13/19頁 |
| 文件大?。?/td> | 481K |
| 代理商： | ΜA7812 |
μ
A7800 SERIES
POSITIVE-VOLTAGE REGULATORS
SLVS056B – MAY 1976 – REVISED OCTOBER 1996
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, V
I
= 23 V, I
O
= 500 mA, T
J
= 25
°
C
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
μ
A7815Y
TYP
UNIT
MIN
MAX
Output voltage
15
11
3
70
12
4
V
Input voltage regulation
VI = 17.5 V to 30 V
VI = 20 V to 26 V
VI = 18.5 V to 28.5 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.
0.019
–1
90
mV/
°
C
μ
V
V
mA
mA
A
2
4.4
230
2.1
electrical characteristics at specified virtual junction temperature, V
I
= 27 V, I
O
= 500 mA, T
J
= 25
°
C
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
μ
A7818Y
TYP
UNIT
MIN
MAX
Output voltage
18
15
5
69
12
4
V
Input voltage regulation
VI = 21 V to 33 V
VI = 24 V to 30 V
VI = 22 V to 32 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.
0.022
–1
110
mV/
°
C
μ
V
V
mA
mA
A
2
4.5
200
2.1
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