參數(shù)資料
型號(hào)： MC7918CT
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： 3-Terminal 1A Negative Voltage Regulator
中文描述： 18 V FIXED NEGATIVE REGULATOR, PSFM3
封裝： TO-220, 3 PIN
文件頁(yè)數(shù)： 5/12頁(yè)
文件大小： 186K
代理商： MC7918CT
MC7900
5
MOTOROLA ANALOG IC DEVICE DATA
MC7912C
ELECTRICAL CHARACTERISTICS
(VI = –19 V, IO = 500 mA, 0
°
C < TJ < +125
°
C, unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = +25
°
C)
Line Regulation (Note 1)
(TJ = +25
°
C, IO = 100 mA)
–14.5 Vdc
≥
VI
≥
–30 Vdc
–16 Vdc
≥
VI
≥
–22 Vdc
(TJ = +25
°
C, IO = 500 mA)
–14.5 Vdc
≥
VI
≥
–30 Vdc
–16 Vdc
≥
VI
≥
–22 Vdc
Load Regulation, TJ = +25
°
C (Note 1)
5.0 mA
≤
IO
≤
1.5 A
250 mA
≤
IO
≤
750 mA
VO
–11.5
–12
–12.5
Vdc
Regline
–
–
–
–
13
6.0
55
24
120
60
240
120
mV
Regload
–
–
46
17
240
120
mV
Output Voltage
–14.5 Vdc
≥
VI
≥
–27 Vdc, 5.0 mA
≤
IO
≤
1.0 A, P
≤
15 W
VO
–11.4
–
–12.6
Vdc
Input Bias Current (TJ = +25
°
C)
Input Bias Current Change
–14.5 Vdc
≥
VI
≥
–30 Vdc
5.0 mA
≤
IO
≤
1.5 A
Output Noise Voltage (TA = +25
°
C, 10 Hz
≤
f
≤
100 kHz)
Ripple Rejection (IO = 20 mA, f = 120 Hz)
Dropout Voltage
IO = 1.0 A, TJ = +25
°
C
IIB
IIB
–
4.4
8.0
mA
–
–
–
–
1.0
0.5
mA
Vn
RR
–
75
–
μ
V
–
61
–
dB
VI–VO
–
2.0
–
Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 mA, 0
°
C
≤
TJ
≤
+125
°
C
VO/
T
–
–1.0
–
mV/
°
C
MC7912AC
ELECTRICAL CHARACTERISTICS
(VI = –19 V, IO = 500 mA, 0
°
C < TJ < +125
°
C, unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (TJ = +25
°
C)
Line Regulation (Note 1)
–16 Vdc
≥
VI
≥
–22 Vdc; IO = 1.0 A, TJ = +25
°
C
–16 Vdc
≥
VI
≥
–22 Vdc; IO = 1.0 A
–14.8 Vdc
≥
VI
≥
–30 Vdc; IO = 500 mA
–14.5 Vdc
≥
VI
≥
–27 Vdc; IO = 1.0 A, TJ = +25
°
C
Load Regulation (Note 1)
5.0 mA
≤
IO
≤
1.5 A, TJ = +25
°
C
250 mA
≤
IO
≤
750 mA
5.0 mA
≤
IO
≤
1.0 A
VO
–11.75
–12
–12.25
Vdc
Regline
–
–
–
–
6.0
24
24
13
60
120
120
120
mV
Regload
–
–
–
46
17
35
150
75
150
mV
Output Voltage
–14.8 Vdc
≥
VI
≥
–27 Vdc, 5.0 mA
≤
IO
≤
1.0 A, P
≤
15 W
VO
–11.5
–
–12.5
Vdc
Input Bias Current
IIB
IIB
–
4.4
8.0
mA
Input Bias Current Change
–15 Vdc
≥
VI
≥
–30 Vdc
5.0 mA
≤
IO
≤
1.0 A
5.0 mA
≤
IO
≤
1.5 A, TJ = +25
°
C
Output Noise Voltage (TA = +25
°
C, 10 Hz
≤
f
≤
100 kHz)
Ripple Rejection (IO = 20 mA, f = 120 Hz)
Dropout Voltage
IO = 1.0 A, TJ = +25
°
C
–
–
–
–
–
–
0.8
0.5
0.5
mA
Vn
RR
–
75
–
μ
V
–
61
–
dB
VI–VO
–
2.0
–
Vdc
Average Temperature Coefficient of Output Voltage
IO = 5.0 A, 0
°
C
≤
TJ
≤
+125
°
C
VO/
T
–
–1.0
–
mV/
°
C
NOTE:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately.
NOTE:
1.
Pulse testing with low duty cycle is used.
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