
MC7900 Series
http://onsemi.com
7
MC7918C
ELECTRICAL CHARACTERISTICS
(V
I
= –27 V, I
O
= 500 mA, 0
°
C < T
J
< +125
°
C, unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (T
J
= +25
°
C)
V
O
–17.3
–18
–18.7
Vdc
Line Regulation (Note 6)
(T
J
= +25
°
C, I
O
= 100 mA)
–21 Vdc
≥
V
I
≥
–33 Vdc
–24 Vdc
≥
V
I
≥
–30 Vdc
(T
J
= +25
°
C, I
O
= 500 mA)
–21 Vdc
≥
V
I
≥
–33 Vdc
–24 Vdc
≥
V
I
≥
–30 Vdc
Reg
line
–
–
–
–
25
10
90
50
180
90
360
180
mV
Load Regulation, T
J
= +25
°
C (Note 6)
5.0 mA
≤
I
O
≤
1.5 A
250 mA
≤
I
O
≤
750 mA
Reg
load
–
–
110
55
360
180
mV
Output Voltage
–21 Vdc
≥
V
I
≥
–33 Vdc, 5.0 mA
≤
I
O
≤
1.0 A, P
≤
15 W
V
O
–17.1
–
–18.9
Vdc
Input Bias Current (T
J
= +25
°
C)
I
IB
–
4.5
8.0
mA
Input Bias Current Change
–21 Vdc
≥
V
I
≥
–33 Vdc
5.0 mA
≤
I
O
≤
1.5 A
I
IB
–
–
–
–
1.0
0.5
mA
Output Noise Voltage (T
A
= +25
°
C, 10 Hz
≤
f
≤
100 kHz)
V
n
–
110
–
μ
V
Ripple Rejection (I
O
= 20 mA, f = 120 Hz)
RR
–
59
–
dB
Dropout Voltage (I
O
= 1.0 A, T
J
= +25
°
C)
V
I
–V
O
–
2.0
–
Vdc
Average Temperature Coefficient of Output Voltage
I
O
= 5.0 mA, 0
°
C
≤
T
J
≤
+125
°
C
V
O
/
T
–
–1.0
–
mV/
°
C
MC7924C
ELECTRICAL CHARACTERISTICS
(V
I
= –33 V, I
O
= 500 mA, 0
°
C < T
J
< +125
°
C, unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
Output Voltage (T
J
= +25
°
C)
V
O
–23
–24
–25
Vdc
Line Regulation (Note 6)
(T
J
= +25
°
C, I
O
= 100 mA)
–27 Vdc
≥
V
I
≥
–38 Vdc
–30 Vdc
≥
V
I
≥
–36 Vdc
(T
J
= +25
°
C, I
O
= 500 mA)
–27 Vdc
≥
V
I
≥
–38 Vdc
–30 Vdc
≥
V
I
≥
–36 Vdc
Reg
line
–
–
–
–
31
14
118
70
240
120
470
240
mV
Load Regulation, T
J
= +25
°
C (Note 6)
5.0 mA
≤
I
O
≤
1.5 A
250 mA
≤
I
O
≤
750 mA
Reg
load
–
–
150
85
480
240
mV
Output Voltage
–27 Vdc
≥
V
I
≥
–38 Vdc, 5.0 mA
≤
I
O
≤
1.0 A, P
≤
15 W
V
O
–22.8
–
–25.2
Vdc
Input Bias Current (T
J
= +25
°
C)
I
IB
–
4.6
8.0
mA
Input Bias Current Change
–27 Vdc
≥
V
I
≥
–38 Vdc
5.0 mA
≤
I
O
≤
1.5 A
I
IB
–
–
–
–
1.0
0.5
mA
Output Noise Voltage (T
A
= +25
°
C, 10 Hz
≤
f
≤
100 kHz)
V
n
–
170
–
μ
V
Ripple Rejection (I
O
= 20 mA, f = 120 Hz)
RR
–
56
–
dB
Dropout Voltage (I
O
= 1.0 A, T
J
= +25
°
C)
V
I
–V
O
–
2.0
–
Vdc
Average Temperature Coefficient of Output Voltage
I
O
= 5.0 mA, 0
°
C
≤
T
J
≤
+125
°
C
V
O
/
T
–
–1.0
–
mV/
°
C
6. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken into account
separately. Pulse testing with low duty cycle is used.