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參數(shù)資料
| 型號(hào)： | MCT7818BT |
| 廠商： | MOTOROLA INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| 中文描述： | 18 V FIXED POSITIVE REGULATOR, PSFM3 |
| 封裝： | PLASTIC, SFM-3 |
| 文件頁(yè)數(shù)： | 7/12頁(yè) |
| 文件大?。?/td> | 224K |
| 代理商： | MCT7818BT |
MCT7800
7
MCT7800
MOTOROLA
ELECTRICAL CHARACTERISTICS
(Vin = 27 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MCT7818B
Typ
18
MCT7818C
Typ
18
Characteristics
Symbol
VO
VO
Min
17.3
Max
18.7
Min
17.3
Max
18.7
Unit
Vdc
Vdc
Output Voltage (TJ = +25
°
C)
Output Voltage (5.0 mA
≤
IO
≤
1.0 A, PO
≤
15 W)
21 Vdc
≤
Vin
≤
33 Vdc
22 Vdc
≤
Vin
≤
33 Vdc
Line Regulation, TJ = +25
°
C (Note 2)
21 Vdc
≤
Vin
≤
33 Vdc
24 Vdc
≤
Vin
≤
30 Vdc
Load Regulation, TJ = +25
°
C (Note 2)
5.0 mA
≤
Vin
≤
1.5 A
250 mA
≤
Vin
≤
750 mA
Quiescent Current (TJ = +25
°
C)
Quiescent Current Change
21 Vdc
≤
Vin
≤
33 Vdc
22 Vdc
≤
Vin
≤
33 Vdc
5.0 mA
≤
IO
≤
1.0 A
Ripple Rejection
22 Vdc
≤
Vin
≤
32 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = +25
°
C)
Output Noise Voltage (TA = +25
°
C)
10 Hz
≤
f
≤
100 kHz
Output Resistance f = 1.0 kHz
Short Circuit Current Limit (TA = +25
°
C)
Vin = 35 Vdc
Peak Output Current (TJ = +25
°
C)
Average Temperature Coefficient of Output Voltage
—
17.1
—
18
—
18.9
17.1
—
18
—
18.9
—
Regline
—
—
11
5.0
360
180
—
—
11
5.0
360
180
mV
Regload
—
—
—
4.0
3.0
5.5
360
180
8.0
—
—
—
4.0
3.0
5.5
360
180
8.0
mV
IB
IB
mA
mA
—
—
—
—
—
—
—
1.0
0.5
—
—
—
—
—
—
1.0
—
0.5
RR
—
—
59
2.0
—
—
—
—
59
2.0
—
—
dB
ViI – VO
Vn
Vdc
μ
V/VO
—
—
10
19
—
—
—
—
10
19
—
—
rO
ISC
m
A
—
—
—
0.2
2.2
–1.0
—
—
—
—
—
—
0.2
2.2
–1.0
—
—
—
Imax
TCVO
A
mV/
°
C
ELECTRICAL CHARACTERISTICS
(Vin = 33 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MCT7824B
Typ
24
MCT7824C
Typ
24
Characteristics
Symbol
VO
VO
Min
23
Max
25
Min
23
Max
25
Unit
Vdc
Vdc
Output Voltage (TJ = +25
°
C)
Output Voltage (5.0 mA
≤
IO
≤
1.0 A, PO
≤
15 W)
27 Vdc
≤
Vin
≤
38 Vdc
28 Vdc
≤
Vin
≤
38 Vdc
Line Regulation, TJ = +25
°
C (Note 2)
27 Vdc
≤
Vin
≤
38 Vdc
30 Vdc
≤
Vin
≤
36 Vdc
Load Regulation, TJ = +25
°
C (Note 2)
5.0 mA
≤
IO
≤
1.5 A
250 mA
≤
IO
≤
750 mA
Quiescent Current (TJ = +25
°
C)
Quiescent Current Change
27 Vdc
≤
Vin
≤
38 Vdc
28 Vdc
≤
Vin
≤
38 Vdc
5.0 mA
≤
IO
≤
1.0 A
Ripple Rejection
28 Vdc
≤
Vin
≤
38 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = +25
°
C)
Output Noise Voltage (TA = +25
°
C)
10 Hz
≤
f
≤
100 kHz
Output Resistance f = 1.0 kHz
Short Circuit Current Limit (TA = +25
°
C)
Vin = 35 Vdc
Peak Output Current (TJ = +25
°
C)
Average Temperature Coefficient of Output Voltage
NOTES:
1. Tlow= 0
°
C for MCT78XXC
= – 40
°
C for MCT78XXB
—
22.8
—
24
—
25.2
22.8
—
24
—
25.2
—
Regline
—
—
12
6.0
480
240
—
—
12
6.0
480
240
mV
Regload
—
—
—
5.0
4.0
5.5
480
240
8.0
—
—
—
5.0
4.0
5.5
480
240
8.0
mV
IB
IB
mA
mA
—
—
—
—
—
—
—
1.0
0.5
—
—
—
—
—
—
1.0
—
0.5
RR
—
—
56
2.0
—
—
—
—
56
2.0
—
—
dB
VI – VO
Vn
Vdc
μ
V/VO
—
—
10
20
—
—
—
—
10
20
—
—
rO
ISC
m
A
—
—
—
0.2
2.2
–1.5
—
—
—
—
—
—
0.2
2.2
–1.5
—
—
—
Imax
TCVO
A
mV/
°
C
Thigh= +125
°
C for MCT78XXB, C. When the junction temperature exceeds +125
°
C, internal current limiting
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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