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MCT7818CT 数据表(PDF) 5 Page - Motorola, Inc

部件名 MCT7818CT
功能描述  THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS
Download  12 Pages
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制造商  MOTOROLA [Motorola, Inc]
网页  http://www.freescale.com
标志 MOTOROLA - Motorola, Inc

MCT7818CT 数据表(HTML) 5 Page - Motorola, Inc

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MCT7800
5
MCT7800
MOTOROLA
ELECTRICAL CHARACTERISTICS (Vin = 15 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MCT7809B
MCT7809C
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage (TJ = +25°C)
VO
8.65
9.0
9.35
8.65
9.0
9.35
Vdc
Output Voltage (5.0 mA
≤ IO ≤ 1.0 A, PO ≤15 W)
11.5 Vdc
≤ Vin ≤ 24 Vdc
12.5 Vdc
≤ Vin ≤ 24 Vdc
VO
8.55
9.0
9.45
8.55
9.0
9.45
Vdc
Line Regulation, TJ = +25°C (Note 2)
11.5 Vdc
≤ Vin ≤ 26 Vdc
11.5 Vdc
≤ Vin ≤ 17 Vdc
Regline
8.0
4.0
50
25
8.0
4.0
50
25
mV
Load Regulation, TJ = +25°C (Note 2)
5.0 mA
≤ IO ≤ 1.5 A
250 mA
≤ IO ≤ 750 mA
Regload
3.0
2.0
50
25
3.0
2.0
50
25
mV
Quiescent Current (TJ = +25°C)
IB
5.5
8.0
5.5
8.0
mA
Quiescent Current Change
11.5 Vdc
≤ Vin ≤ 26 Vdc
12.5 Vdc
≤ Vin ≤ 26 Vdc
5.0 mA
≤ IO ≤ 1.0 A
∆IB
1.0
0.5
1.0
0.5
mA
Ripple Rejection
11.5 Vdc
≤ Vin ≤ 21.5 Vdc, f = 120 Hz
RR
62
62
dB
Dropout Voltage (IO = 1.0 A, TJ = +25°C)
VI – VO
2.0
2.0
Vdc
Output Noise Voltage (TA = +25°C)
10 Hz
≤ f ≤ 100 kHz
Vn
10
10
µV/VO
Output Resistance f = 1.0 kHz
rO
18
18
m
Short Circuit Current Limit (TA = +25°C)
Vin = 35 Vdc
ISC
0.2
0.2
A
Peak Output Current (TJ = +25°C)
Imax
2.2
2.2
A
Average Temperature Coefficient of Output Voltage
TCVO
–1.0
–1.0
mV/
°C
ELECTRICAL CHARACTERISTICS (Vin = 19 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MCT7812B
MCT7812C
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage (TJ = +25°C)
VO
11.5
12
12.5
11.5
12
12.5
Vdc
Output Voltage (5.0 mA
≤ IO ≤ 1.0 A, PO ≤15 W)
14.5 Vdc
≤ Vin ≤ 27 Vdc
15.5 Vdc
≤ Vin ≤ 27 Vdc
VO
11.4
12
12.6
11.4
12
12.6
Vdc
Line Regulation, TJ = +25°C (Note 2)
14.5 Vdc
≤ Vin ≤ 30 Vdc
16 Vdc
≤ Vin ≤ 22 Vdc
Regline
10
5.0
240
120
10
5.0
240
120
mV
Load Regulation, TJ = +25°C (Note 2)
5.0 mA
≤ IO ≤ 1.5 A
250 mA
≤ IO ≤ 750 mA
Regload
3.0
2.0
240
120
3.0
2.0
240
120
mV
Quiescent Current (TJ = +25°C)
IB
5.5
8.0
5.5
8.0
mA
Quiescent Current Change
14.5 Vdc
≤ Vin ≤ 30 Vdc
15 Vdc
≤ Vin ≤ 30 Vdc
5.0 mA
≤ IO ≤ 1.0 A
∆IB
1.0
0.5
1.0
0.5
mA
NOTES:
1. Tlow = 0°C for MCT78XXC
Thigh = +125°C for MCT78XXB, C. When the junction temperature exceeds +125°C, internal current limiting
= – 40
°C for MCT78XXB
will reduce the output current to less than 1.0 A at a VI–VO of 15 V or
greater. The MC7800 die will supply more current under the same conditions.
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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