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7808 Datasheet(PDF) 8 Page - Motorola, Inc

Part # 7808
Description  THREE TERMINAL POSITIVE FIXED VOLTAGE REGULATORS
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Manufacturer  MOTOROLA [Motorola, Inc]
Direct Link  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

7808 Datasheet(HTML) 8 Page - Motorola, Inc

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MC7800, MC7800A, LM340, LM340A Series
8
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (continued) (Vin = 19 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7812C/LM340T–12
Characteristic
Symbol
Min
Typ
Max
Unit
Output Noise Voltage (TA = 25°C)
Vn
10
µV/VO
10 Hz
≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz
rO
1.1
m
Short Circuit Current Limit (TA = 25°C)
ISC
0.2
A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C)
Imax
2.2
A
Average Temperature Coefficient of Output Voltage
TCVO
–0.8
mV/
°C
ELECTRICAL CHARACTERISTICS (Vin = 19 V, IO = 1.0 A, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MC7812AC/LM340AT–12
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = 25°C)
VO
11.75
12
12.25
Vdc
Output Voltage (5.0 mA
≤ IO ≤ 1.0 A, PD ≤ 15 W)
VO
11.5
12
12.5
Vdc
14.8 Vdc
≤ Vin ≤ 27 Vdc
Line Regulation (Note 2)
Regline
mV
14.8 Vdc
≤ Vin ≤ 30 Vdc, IO = 500 mA
3.8
18
16 Vdc
≤ Vin ≤ 22 Vdc, IO = 1.0 A
2.2
20
14.5 Vdc
≤ Vin ≤ 27 Vdc, TJ = 25°C
6.0
120
Load Regulation (Note 2)
Regload
mV
5.0 mA
≤ IO ≤ 1.5 A, TJ = 25°C
25
5.0 mA
≤ IO ≤ 1.0 A
25
Quiescent Current
IB
3.4
6.0
mA
Quiescent Current Change
∆IB
mA
15 Vdc
≤ Vin ≤ 30 Vdc, IO = 500 mA
0.8
14.8 Vdc
≤ Vin ≤ 27 Vdc, TJ = 25°C
0.8
5.0 mA
≤ IO ≤ 1.0 A, TJ = 25°C
0.5
Ripple Rejection
RR
55
60
dB
15 Vdc
≤ Vin ≤ 25 Vdc, f = 120 Hz, IO = 500 mA
Dropout Voltage (IO = 1.0 A, TJ = 25°C)
VI – VO
2.0
Vdc
Output Noise Voltage (TA = 25°C)
Vn
10
µV/VO
10 Hz
≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz)
rO
1.1
m
Short Circuit Current Limit (TA = 25°C)
ISC
0.2
A
Vin = 35 Vdc
Peak Output Current (TJ = 25°C)
Imax
2.2
A
Average Temperature Coefficient of Output Voltage
TCVO
–0.8
mV/
°C
NOTES: 1. Tlow = –40°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
Thigh = +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX
2. 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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