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參數(shù)資料
| 型號(hào)： | UA7912C |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | NEGATIVE-VOLTAGE REGULATORS |
| 中文描述： | 負(fù)電壓調(diào)節(jié)器 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 317K |
| 代理商： | UA7912C |
μ
SLVS058D JUNE 1976 REVISED APRIL 2004
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, V
I
= 10 V, I
O
= 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
μ
A7905C
TYP
UNITS
TJ
MIN
4.8
MAX
5.2
25
°
C
5
Output voltage
IO = 5 mA to 1 A,
P
≤
15 W
VI = 7 V to 25 V
VI = 8 V to 12 V
VI = 8 V to 18 V,
IO = 5 mA to 1.5 A
IO = 250 mA to 750 mA
IO = 5 mA
f = 10 Hz to 100 kHz
IO = 1 A
VI = 7 V to 20 V,
0
°
C to 125
°
C
4.75
5.25
V
Input regulation
12.5
50
15
mV
4
Ripple rejection
f = 120 Hz
0
°
C to 125
°
C
54
60
15
5
dB
Output regulation
100
50
mV
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
Bias current
0
°
C to 125
°
C
25
°
C
25
°
C
25
°
C
0.4
125
1.1
1.5
0.15
0.08
2.1
mV/
°
C
μ
V
V
mA
2
Bias current change
VI = 7 V to 25 V
IO = 5 mA to 1 A
0.5
0.5
mA
Peak output current
Pulse-testing techniques are used to 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 2-
μ
F capacitor across the input and a 1-
μ
F capacitor across the output.
This specification applies only for dc power dissipation permitted by absolute maximum ratings.
25
°
C
A
electrical characteristics at specified virtual junction temperature, V
I
= 11 V, I
O
= 500 mA (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
μ
A7906C
TYP
UNITS
TJ
MIN
5.75
MAX
6.25
25
°
C
6
Output voltage
IO = 5 mA to 1 A,
P
≤
15 W
VI = 8 V to 25 V
VI = 9 V to 13 V
VI = 9 V to 19 V,
IO = 5 mA to 1.5 A
IO = 250 mA to 750 mA
IO = 5 mA
f = 10 Hz to 100 kHz
IO = 1 A
VI = 8 V to 21 V,
0
°
C to 125
°
C
5.7
6.3
V
Input regulation
12.5
120
60
mV
4
Ripple rejection
f = 120 Hz
0
°
C to 125
°
C
54
60
15
5
dB
Output regulation
120
60
mV
Temperature coefficient of output voltage
Output noise voltage
Dropout voltage
Bias current
0
°
C to 125
°
C
25
°
C
25
°
C
25
°
C
0.4
150
1.1
1.5
0.15
0.08
2.1
mV/
°
C
μ
V
V
mA
2
Bias current change
VI = 8 V to 25 V
IO = 5 mA to 1 A
1.3
0.5
mA
Peak output current
Pulse-testing techniques are used to 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 2-
μ
F capacitor across the input and a 1-
μ
F capacitor across the output.
This specification applies only for dc power dissipation permitted by absolute maximum ratings.
25
°
C
A
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