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UA7805CKCS bảng dữ liệu(PDF) 5 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  FIXED POSITIVE VOLTAGE REGULATORS
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μA7800 SERIES
www.ti.com
SLVS056O – MAY 1976 – REVISED AUGUST 2012
uA7805 Electrical Characteristics
at specified virtual junction temperature, VI = 10 V, IO = 500 mA (unless otherwise noted)
μA7805C
PARAMETER
TEST CONDITIONS
TJ
(1)
UNIT
MIN
TYP
MAX
25°C
4.8
5
5.2
IO = 5 mA to 1 A, VI = 7 V to 20 V,
Output voltage
V
PD ≤ 15 W
0°C to 125°C
4.75
5.25
VI = 7 V to 25 V
3
100
Input voltage regulation
25°C
mV
VI = 8 V to 12 V
1
50
VI = 8 V to 12 V, f = 120 Hz
62
78
Ripple rejection(2)
0°C to 125°C
dB
VI = 8 V to 12 V, f = 120 Hz (KCT)
68
IO = 5 mA to 1.5 A
15
100
Output voltage regulation
25°C
mV
IO = 250 mA to 750 mA
5
50
Output resistance
f = 1 kHz
0°C to 125°C
0.017
Temperature coefficient of output voltage
IO = 5 mA
0°C to 125°C
–1.1
mV/°C
Output noise voltage
f = 10 Hz to 100 kHz
25°C
40
μV
Dropout voltage
IO = 1 A
25°C
2
V
Bias current
25°C
4.2
8
mA
VI = 7 V to 25 V
1.3
Bias current change
0°C to 125°C
mA
IO = 5 mA to 1 A
0.5
Short-circuit output current
25°C
750
mA
Peak output current
25°C
2.2
A
(1)
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-
μF capacitor across the input and a 0.1-μF capacitor across
the output.
(2)
This parameter is validated by design and verified during product characterization. It is not tested in production.
uA7808 Electrical Characteristics
at specified virtual junction temperature, VI = 14 V, IO = 500 mA (unless otherwise noted)
μA7808C
PARAMETER
TEST CONDITIONS
TJ
(1)
UNIT
MIN
TYP
MAX
25°C
7.7
8
8.3
IO = 5 mA to 1 A, VI = 10.5 V to 23 V,
Output voltage
V
PD ≤ 15 W
0°C to 125°C
7.6
8.4
VI = 10.5 V to 25 V
6
160
Input voltage regulation
25°C
mV
VI = 11 V to 17 V
2
80
VI = 11.5 V to 21.5 V, f = 120 Hz
55
72
Ripple rejection(2)
0°C to 125°C
dB
VI = 11.5 V to 21.5 V, f = 120 Hz
62
(KCT)
IO = 5 mA to 1.5 A
12
160
Output voltage regulation
25°C
mV
IO = 250 mA to 750 mA
4
80
Output resistance
f = 1 kHz
0°C to 125°C
0.016
Temperature coefficient of output voltage
IO = 5 mA
0°C to 125°C
–0.8
mV/°C
Output noise voltage
f = 10 Hz to 100 kHz
25°C
52
μV
Dropout voltage
IO = 1 A
25°C
2
V
Bias current
25°C
4.3
8
mA
VI = 10.5 V to 25 V
1
Bias current change
0°C to 125°C
mA
IO = 5 mA to 1 A
0.5
Short-circuit output current
25°C
450
mA
(1)
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-
μF capacitor across the input and a 0.1-μF capacitor across
the output.
(2)
This parameter is validated by design and verified during product characterization. It is not tested in production.
Copyright © 1976–2012, Texas Instruments Incorporated
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