DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µ
PC7900A Series
THREE TERMINAL NEGATIVE VOLTAGE REGULATOR
DESCRIPTION
µ
PC7900A series are monolithic three terminal negative regulators which employ internally current limiting, thermal
shut down, output transistor safe operating area protection make them essentially indestructible.
They are intended as fixed voltage regulators in a wide range of application including local on card regulation for
elimination of distribution problems associated wide single point regulation.
FEATURES
• Wide operation temperature range.
T
A
: –30 ˚C to +85 ˚C
• Good load regulation.
7 mV TYP. (250 mA
≤
I
O
≤
750 mA):
µ
PC7905AHF
• Low noise.
ORDERING INFORMATION
Part Number
Output Voltage
–5 V
–8 V
–12 V
–15 V
–18 V
–24 V
Package
MP-45G (ISOLATED TO-220)
MP-45G (ISOLATED TO-220)
MP-45G (ISOLATED TO-220)
MP-45G (ISOLATED TO-220)
MP-45G (ISOLATED TO-220)
MP-45G (ISOLATED TO-220)
µ
PC7905AHF
µ
PC7908AHF
µ
PC7912AHF
µ
PC7915AHF
µ
PC7918AHF
µ
PC7924AHF
The information in this document is subject to change without notice.
Document No. G10640EJ3V0DS00 (3rd edition)
(Previous No. IC-3486)
Date Published March 1997 N
Printed in Japan
©
1994
µ
PC7900A Series
EQUIVALENT CIRCUIT
R4
R15
Q8
R8
R9
Q9
R21
R22
Q15
Q18
R27
R25
Q12
R5
Q5
Q13
D1
D4
C1
D5
R6
Q1
Q14
R7
Q2
R10
R3
R18
Q3
R1
R2
Q7
Q4
Q11
Q10
Q17
R20
R16
Q6
Q29
Q20
R19
R23
R24
Q22
C3
R30 R31
Q21
C4 R32
Q19
R12
R17
Q27
D6
Q23
Q16
R28
R29
Q25
R14
R13
Q28
Q24
D2
R26
OUTPUT
Q26
R11
INPUT
CONNECTION DIAGRAM
Marking
GND INPUT OUTPUT
TYPICAL CONNECTION
D
1
INPUT
C
IN
µ
PC7900A
D
2
C
OUT
OUTPUT
C
IN
: More than 2.2
µ
F
C
OUT
: More than 0.33
µ
F
D
1
D
2
: Needed for V
IN
> V
O
: Needed for V
O
> GND
2
µ
PC7900A Series
ABSOLUTE MAXIMUM REATINGS (T
A
= 25 ˚C)
Parameter
Input Voltage
Internal Power Dissipation
Operating Ambient Temperature Range
Operating Junction Temperature Range
Storage Temperature Range
Thermal Resistance (junction to case)
Thermal Resistance (junction to ambient)
V
IN
P
T
T
A
T
J
T
stg
R
th(J-C)
R
th(J-A)
Symbol
Rating
–35/–40
15
–30 to +85
–30 to +150
–55 to +150
5.0
65
Note 1
Note 2
Unit
V
W
˚C
˚C
˚C
˚C/W
˚C/W
Note 1.
µ
PC7905A, 08A, 12A, 15A, 18A: –35 V,
µ
PC7924A: –40 V
2.
Internally limited
RECOMMENDED OPERATING CONDITIONS
Parameter
Input Voltage
Symbol
V
IN
Part Number
MIN.
–7
–10.5
–14.5
–17.5
–21
–27
0.005
–30
TYP.
–10
–14
–19
–23
–27
–33
MAX.
–25
–25
–30
–30
–33
–38
1
+85
A
˚C
Unit
V
µ
PC7905AHF
µ
PC7908AHF
µ
PC7912AHF
µ
PC7915AHF
µ
PC7918AHF
µ
PC7924AHF
Output Current
Operating Ambient
Temperature
Operating Junction
Temperature Range
I
O
T
A
All
All
T
J
All
–30
+125
˚C
3
µ
PC7900A Series
ELECTRICAL CHARACTERISTICS (T
A
= 25 ˚C)
µ
PC7905A
(V
IN
= –10 V, I
o
= 500 mA, 0 ˚C
≤
T
J
≤
+125 ˚C)
Parameter
Output Voltage
Symbol
V
O
T
J
= 25 ˚C
–7 V
≤
V
IN
≤
–20 V, 5 mA
≤
I
O
≤
1 A,
P
T
≤
15 W
–30 ˚C
≤
T
J
≤
+125 ˚C
Line Regulation
REG
IN
T
J
= 25 ˚C, –7 V
≤
V
IN
≤
–25 V
T
J
= 25 ˚C, –8 V
≤
V
IN
≤
–12 V
Load Regulation
REG
L
T
J
= 25 ˚C, 5 mA
≤
I
O
≤
1.5 A
T
J
= 25 ˚C, 250 mA
≤
I
O
≤
750 mA
Quiescent Current
Quiescent Current Change
I
BIAS
∆I
BIAS
T
J
= 25 ˚C
–7 V
≤
V
IN
≤
–25 V
5 mA
≤
I
O
≤
1 A
Output Noize Voltage
Ripple Rejection
V
n
R•R
T
J
= 25 ˚C, 10 Hz
≤
f
≤
100 kHz
T
J
= 25 ˚C, f = 120 Hz, –8 V
≤
V
IN
≤
–18 V,
I
O
= 500 mA
T
J
= 25 ˚C, I
O
= 1A
T
J
= 25 ˚C
I
O
= 5 mA
1.6
56
77
63
Conditions
MIN.
–4.8
–4.75
TYP.
–5.0
MAX.
–5.2
–5.25
Unit
V
–4.75
25
3
30
7
3.6
–5.25
100
50
100
50
6.0
1.3
0.5
mA
mA
mV
mV
µ
Vr.m.s
dB
Dropout Voltage
Peak Output Current
Temperature Coefficient
of Output Voltage
V
DIF
I
Opeak
|∆V
O
/∆T|
1.2
2.2
0.36
2.8
V
A
mV/˚C
µ
PC7908A
(V
IN
= –14 V, I
O
= 500 mA, 0 ˚C
≤
T
J
≤
+125 ˚C)
Parameter
Output Voltage
Symbol
V
O
T
J
= 25 ˚C
–10.5 V
≤
V
IN
≤
–23 V, 5 mA
≤
I
O
≤
1 A,
P
T
≤
15 W
–30 ˚C
≤
T
J
≤
+125 ˚C
Line Regulation
REG
IN
T
J
= 25 ˚C, –10.5 V
≤
V
IN
≤
–25 V
T
J
= 25 ˚C, –11 V
≤
V
IN
≤
–17 V
Load Regulation
REG
L
T
J
= 25 ˚C, 5 mA
≤
I
O
≤
1.5 A
T
J
= 25 ˚C, 250 mA
≤
I
O
≤
750 mA
Quiescent Current
Quiescent Current Change
I
BIAS
∆I
BIAS
T
J
= 25 ˚C
–10.5 V
≤
V
IN
≤
–25 V
5 mA
≤
I
O
≤
1 A
Output Noize Voltage
Ripple Rejection
V
n
R•R
T
J
= 25 ˚C, 10 Hz
≤
f
≤
100 kHz
T
J
= 25 ˚C, –11.5 V
≤
V
IN
≤
–21.5 V,
f = 120 Hz, I
O
= 500 mA
T
J
= 25 ˚C, I
O
= 1 A
T
J
= 25 ˚C
I
O
= 5 mA
1.6
52
130
58
Conditions
MIN.
–7.7
–7.6
TYP.
–8.0
MAX.
–8.3
–8.4
Unit
V
–7.6
33
14
40
14
3.9
–8.4
150
75
160
80
6.0
1.0
0.5
mA
mA
mV
mV
µ
Vr.m.s
dB
Dropout Voltage
Peak Output Current
Temperature Coefficient
of Output Voltage
V
DIF
I
Opeak
|∆V
O
/∆T|
1.2
2.2
0.32
2.8
V
A
mV/˚C
4
µ
PC7900A Series
µ
PC7912A
(V
IN
= –19 V, I
O
= 500 mA, 0 ˚C
≤
T
J
≤
+125 ˚C)
Parameter
Output Voltage
Symbol
V
O
T
J
= 25 ˚C
–14.5 V
≤
V
IN
≤
–27 V, 5 mA
≤
I
O
≤
1 A,
P
T
≤
15 W
–30 ˚C
≤
T
J
≤
+125 ˚C
Line Regulation
REG
IN
T
J
= 25 ˚C, –14.5 V
≤
V
IN
≤
–30 V
T
J
= 25 ˚C, –16 V
≤
V
IN
≤
–22 V
Load Regulation
REG
L
T
J
= 25 ˚C, 5 mA
≤
I
O
≤
1.5 A
T
J
= 25 ˚C, 250 mA
≤
I
O
≤
750 mA
Quiescent Current
Quiescent Current Change
I
BIAS
∆I
BIAS
T
J
= 25 ˚C
–14.5 V
≤
V
IN
≤
–30 V
5 mA
≤
I
O
≤
1A
Output Noize Voltage
Ripple Rejection
V
n
R•R
T
J
= 25 ˚C, 10 Hz
≤
f
≤
100 kHz
T
J
= 25 ˚C, f = 120 Hz, –15 V
≤
V
IN
≤
–25 V,
I
O
= 500 mA
T
J
= 25 ˚C, I
O
= 1A
T
J
= 25 ˚C
I
O
= 5 mA
1.6
49
140
56
Conditions
MIN.
–11.5
–11.4
TYP.
–12
MAX.
–12.5
–12.6
Unit
V
–11.4
60
25
70
20
4.1
–12.6
200
100
220
110
6.2
1.0
0.5
mA
mA
mV
mV
µ
Vr.m.s
dB
Dropout Voltage
Peak Output Current
Temperature Coefficient
of Output Voltage
V
DIF
I
Opeak
|∆V
O
/∆T|
1.2
2.2
0.04
2.8
V
A
mV/˚C
µ
PC7915A
(V
IN
= –23 V, I
O
= 500 mA, 0 ˚C
≤
T
J
≤
+125 ˚C)
Parameter
Output Voltage
Symbol
V
O
T
J
= 25 ˚C
–17.5 V
≤
V
IN
≤
–30 V, 5 mA
≤
I
O
≤
1 A,
P
T
≤
15 W
–30 ˚C
≤
T
J
≤
+125 ˚C
Line Regulation
REG
IN
T
J
= 25 ˚C, –17.5 V
≤
V
IN
≤
–30 V
T
J
= 25 ˚C, –20 V
≤
V
IN
≤
–26 V
Load Regulation
REG
L
T
J
= 25 ˚C, 5 mA
≤
I
O
≤
1.5 A
T
J
= 25 ˚C, 250 mA
≤
I
O
≤
750 mA
Quiescent Current
Quiescent Current Change
I
BIAS
∆I
BIAS
T
J
= 25 ˚C
–17.5 V
≤
V
IN
≤
–30 V
5 mA
≤
I
O
≤
1 A
Output Noize Voltage
Ripple Rejection
V
n
R•R
T
J
= 25 ˚C, 10 Hz
≤
f
≤
100 kHz
T
J
= 25 ˚C, f = 120 Hz,
–18.5 V
≤
V
IN
≤
–28.5 V, I
O
= 500 mA
T
J
= 25 ˚C, I
O
= 1 A
T
J
= 25 ˚C
I
O
= 5 mA
1.6
47
240
54
Conditions
MIN.
–14.4
–14.25
TYP.
–15
MAX.
–15.6
–15.75
Unit
V
–14.25
60
30
100
30
4.2
–15.75
200
100
300
150
6.2
1.0
0.5
mA
mA
mV
mV
µ
Vr.m.s
dB
Dropout Voltage
Peak Output Current
Temperature Coefficient
of Output Voltage
V
DIF
I
Opeak
|∆V
O
/∆T|
1.2
2.2
1.2
2.8
V
A
mV/˚C
5
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