MC78T00 Datasheet, PDF (4/12 Pages) Motorola, Inc – THREE-AMPERE POSITIVE FIXED VOLTAGE REGULATORS

MC78T00 Series
ELECTRICAL CHARACTERISTICS (Vin = 17 V, IO = 3.0 A, 0°C ≤ TJ ≤ 125°C, PO ≤ Pmax [Note 1], unless otherwise noted.)
MC78T12AC
MC78T12C
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max Unit
Output Voltage
(5.0 mA ≤ IO ≤ 3.0 A, TJ = +25°C)
(5.0 mA ≤ IO ≤ 3.0 A,
5.0 mA ≤ IO ≤ 2.0 A, 14.5 Vdc ≤ Vin ≤ 27 Vdc)
VO
Vdc
11.75
12
12.25 11.5
12
12.5
11.5
12
12.5
11.4
12
12.6
Line Regulation (Note 2)
Regline
–
6.0
45
–
6.0
45
mV
(14.5 Vdc ≤ Vin ≤ 35 Vdc, IO = 5.0 mA, TJ = +25°C;
14.5 Vdc ≤ Vin ≤ 35 Vdc, IO = 1.0 A, TJ = +25°C;
16 Vdc ≤ Vin ≤ 22 Vdc, IO = 3.0 A, TJ = +25°C;
14.9 Vdc ≤ Vin ≤ 27 Vdc, IO = 1.0 A)
Load Regulation (Note 2)
(5.0 mA ≤ IO ≤ 3.0 A, TJ = +25°C)
(5.0 mA ≤ IO ≤ 3.0 A)
Regload
mV
–
10
30
–
10
30
–
15
80
–
15
80
Thermal Regulation
(Pulse = 10 ms, P = 20 W, TA = +25°C)
Regtherm
–
0.001 0.01
–
0.002 0.03 %VO/W
Quiescent Current
(5.0 mA ≤ IO ≤ 3.0 A, TJ = +25°C)
(5.0 mA ≤ IO ≤ 3.0 A)
IB
mA
–
3.5
5.0
–
3.5
5.0
–
4.0
6.0
–
4.0
6.0
Quiescent Current Change
∆IB
(14.5 Vdc ≤ Vin ≤ 35 Vdc, IO = 5.0 mA, TJ = +25°C;
5.0 mA ≤ IO ≤ 3.0 A, TJ = +25°C;
14.9 Vdc ≤ Vin ≤ 27 Vdc, IO = 1.0 A)
–
0.3
1.0
–
0.3
1.0
mA
Ripple Rejection
(15 Vdc ≤ Vin ≤ 25 Vdc, f = 120 Hz,
IO = 2.0 A, TJ = 25°C)
RR
57
67
–
57
67
–
dB
Dropout Voltage (IO = 3.0 A, TJ = +25°C)
Vin – VO
–
2.2
2.5
–
2.2
2.5
Vdc
Output Noise Voltage
(10 Hz ≤ f ≤ 100 kHz, TJ = +25°C)
Vn
–
10
–
–
10
–
µV/VO
Output Resistance (f = 1.0 kHz)
Short Circuit Current Limit
(Vin = 35 Vdc, TJ = +25°C)
RO
–
2.0
–
–
20
–
mΩ
ISC
–
1.5
–
–
1.5
–
A
Peak Output Current (TJ = +25°C)
Average Temperature Coefficient
of Output Voltage (IO = 5.0 mA)
Imax
–
5.0
–
TCVO
–
0.5
–
–
5.0
–
A
–
0.5
–
mV/°C
NOTES: 1. Although power dissipation is internally limited, specifications apply only for PO ≤ Pmax, Pmax = 25 W.
2. Line and load 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.
4
MOTOROLA ANALOG IC DEVICE DATA