The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all products and/or types are available in every country. Please check with an NEC Electronics
sales representative for availability and additional information.
1994
BIPOLAR ANALOG INTEGRATED CIRCUIT
μ
PC79Mxx Series
THREE TERMINAL NEGATIVE VOLTAGE REGULATOR
DATA SHEET
The mark <R> shows major revised points.
The revised points can be easily searched by copying an "<R>" in the PDF file and specifying it in the "Find what:" field.
Document No. G11629EJ7V0DS00 (7th edition)
Date Published January 2007 NS CP(N)
Printed in Japan
DESCRIPTION
The
μ
PC79Mxx Series are three-terminal negative output voltage stabilization power supply circuit of fixed output
voltage. It regulates non-stabilized DC input voltage to output stabilized fixed voltage.
The six types of voltage value are 5 V, 8 V, 12 V, 15 V, 18 V and 24 V, and they can be respectively used as
power supply circuit with maximum current capacity 500 mA.
FEATURES
Output current : 500 mA
On-chip some protection circuits
(over current protection, SOA protection and thermal shut down)
Low noise
ORDERING INFORMATION
Part Number Package Output Voltage Marking Package Type
μ
PC79M05HF 3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 5 V 79M05 Packed in envelope
μ
PC79M05HF-AZ Note
3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 5 V 79M05 Packed in envelope
μ
PC79M08HF 3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 8 V 79M08 Packed in envelope
μ
PC79M08HF-AZ Note
3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 8 V 79M08 Packed in envelope
μ
PC79M12HF 3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 12 V 79M12 Packed in envelope
μ
PC79M12HF-AZ Note
3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 12 V 79M12 Packed in envelope
μ
PC79M15HF 3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 15 V 79M15 Packed in envelope
μ
PC79M15HF-AZ Note
3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 15 V 79M15 Packed in envelope
μ
PC79M18HF 3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 18 V 79M18 Packed in envelope
μ
PC79M18HF-AZ Note 3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 18 V 79M18 Packed in envelope
μ
PC79M24HF 3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 24 V 79M24 Packed in envelope
μ
PC79M24HF-AZ Note 3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220) 24 V 79M24 Packed in envelope
Note Pb-free (This product does not contain Pb in external electrode).
Remark Output voltage 5 V product is written in the text as
μ
PC79M05.
It applies to other output voltage products as same.
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Data Sheet G11629EJ7V0DS
2
μ
PC79Mxx Series
PIN CONFIGURATION (Marking Side)
3-PIN PLASTIC SIP (MP-45G) (Isolated TO-220)
1: GND
2: INPUT
3: OUTPUT
123
EQUIVALENT CIRCUIT
GND
R
21
Q
17
Q
16
R
16
R
15
C
2
Q
10
Q
11
Q
13
Q
12
Q
9
Q
14
Q
15
Q
3
C
1
R2
R
1
R
9
R
8
R
7
R
10
R
11
R
12
D
3
D
1
D
4
D
5
R
13
Q
8
R
4
D
2
Q4
Q
2
Q
1
Q
5
Q
7
D
8
Q
6
R
3
R
5
R
6
R
17
D
6
D
7
R
18
R
20
R
19
R
23
R
22
R
14
OUTPUT
INPUT
Data Sheet G11629EJ7V0DS 3
μ
PC79Mxx Series
ABSOLUTE MAXIMUM RATINGS (TA = 25°C, unless otherwise specified)
Parameter Symbol Rating Unit
Input Voltage VIN 35/40 Note1 V
Internal Power Dissipation PT 15 Note2 W
Operating Ambient Temperature TA 20 to +85 °C
Operating Junction Temperature TJ 20 to +150 °C
Storage Temperature Tstg 55 to +150 °C
Thermal Resistance (junction to case) Rth(JC) 7 °C/W
Thermal Resistance (junction to ambient) Rth(JA) 65 °C/W
Notes 1.
μ
PC79M05, 08, 12, 15, 18 : 35 V,
μ
PC79M24 : 40 V
2. Internally limited. When operating junction temperature rise above 150°C, the internal protection circuit
shutdown output voltage.
Caution Product quality may suffer if the absolute maximum rating is exceeded even momentarily for any
parameter. That is, the absolute maximum ratings are rated values at which the product is on the verge
of suffering physical damage, and therefore the product must be used under conditions that ensure that
the absolute maximum ratings are not exceeded.
TYPICAL CONNECTION
COUTCIN
OUTPUTINPUT
D1
PC79Mxx
D2
μ
CIN : Required if regulator is located an appreciable distance from power supply filter. (More than 2
μ
F)
COUT: Connect it within 2 cm from OUTPUT pin and GND pin (More than 1
μ
F).
D1 : Needed for VIN > VO.
D2 : Needed for VO > GND.
RECOMMENDED OPERATING CONDITIONS
Parameter Symbol Type Number MIN. TYP. MAX. Unit
μ
PC79M05 7 10 25 V
μ
PC79M08 10.5 14 25 V
μ
PC79M1214.5 19 30 V
μ
PC79M15 17.5 23 30 V
μ
PC79M18 21 27 33 V
Input Voltage VIN
μ
PC79M24 27 33 38 V
Output Current IO All 5 350 mA
Operating Ambient Temperature TA All 20 +85 °C
Operating Junction Temperature TJ All 20 +125 °C
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<R>
<R>
Data Sheet G11629EJ7V0DS
4
μ
PC79Mxx Series
ELECTRICAL CHARACTERISTICS
μ
PC79M05 (VIN = 10 V, IO = 350 mA, 0°C TJ +125°C, CIN = 2.2
μ
F, COUT = 1
μ
F, unless otherwise specified)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
TJ = 25°C 4.8 5.0 5.2 V Output Voltage VO
7 V VIN 25 V, 5 mA IO 350 mA 4.75 5.25 V
TJ = 25°C, 7 V VIN 25 V 18 50 mV Line Regulation REGIN
TJ = 25°C, 8 V VIN 18 V 10 30 mV
TJ = 25°C, 5 mA IO 500 mA 15 100 mV Load Regulation REGL
TJ = 25°C, 5 mA IO 350 mA 10 mV
Quiescent Current IBIAS TJ = 25°C 4.3 6.0 mA
8 V VIN 25 V 0.5 mA Quiescent Current Change
Δ
IBIAS
5 mA IO 350 mA 0.4 mA
Output Noise Voltage Vn TJ = 25°C, 10 Hz f 100 kHz 45 200
μ
Vr.m.s.
Ripple Rejection R•R TJ = 25°C, 8 V VIN 18 V,
f = 120 Hz, IO = 100 mA 50 72 dB
Dropout Voltage VDIF TJ = 25°C 1.1 V
Short Circuit Current IOshort TJ = 25°C, VIN = 25 V 500 mA
Peak Output Current IOpeak TJ = 25°C 620 880 1020 mA
Temperature Coefficient of
Output Voltage
Δ
VO/
Δ
T IO = 5 mA
0.2 mV/°C
μ
PC79M08 (VIN = 14 V, IO = 350 mA, 0°C TJ +125°C, CIN = 2.2
μ
F, COUT = 1
μ
F, unless otherwise specified)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
TJ = 25°C 7.7 8.0 8.3 V Output Voltage VO
10.5 V VIN 25 V, 5 mA IO 350 mA 7.6 8.4 V
TJ = 25°C, 10.5 V VIN 25 V 20 80 mV Line Regulation REGIN
TJ = 25°C, 11 V VIN 21 V 15 50 mV
TJ = 25°C, 5 mA IO 500 mA 20 160 mV Load Regulation REGL
TJ = 25°C, 5 mA IO 350 mA 15 mV
Quiescent Current IBIAS TJ = 25°C 4.3 6.0 mA
10.5 V VIN 25 V 0.5 mA Quiescent Current Change
Δ
IBIAS
5 mA IO 350 mA 0.4 mA
Output Noise Voltage Vn TJ = 25°C, 10 Hz f 100 kHz 65 220
μ
Vr.m.s.
Ripple Rejection R•R TJ = 25°C, 11.5 V VIN 21.5 V,
f = 120 Hz, IO = 100 mA
50 66 dB
Dropout Voltage VDIF TJ = 25°C 1.1 V
Short Circuit Current IOshort TJ = 25°C, VIN = 25 V 500 mA
Peak Output Current IOpeak TJ = 25°C 620 880 1020 mA
Temperature Coefficient of
Output Voltage
Δ
VO/
Δ
T IO = 5 mA 0.3 mV/°C
Data Sheet G11629EJ7V0DS 5
μ
PC79Mxx Series
μ
PC79M12 (VIN = 19 V, IO = 350 mA, 0°C TJ +125°C, CIN = 2.2
μ
F, COUT = 1
μ
F, unless otherwise specified)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
TJ = 25°C 11.5 12.0 12.5 V Output Voltage VO
14.5 V VIN 30 V, 5 mA IO 350 mA 11.4 12.6 V
TJ = 25°C, 14.5 V VIN 30 V 25 80 mV Line Regulation REGIN
TJ = 25°C, 15 V VIN 25 V 20 50 mV
TJ = 25°C, 5 mA IO 500 mA 35 240 mV Load Regulation REGL
TJ = 25°C, 5 mA IO 350 mA 25 mV
Quiescent Current IBIAS TJ = 25°C 4.4 6.0 mA
14.5 V VIN 30 V 0.5 mA Quiescent Current Change
Δ
IBIAS
5 mA IO 350 mA 0.4 mA
Output Noise Voltage Vn TJ = 25°C, 10 Hz f 100 kHz 125 280
μ
Vr.m.s.
Ripple Rejection R•R TJ = 25°C, 15 V VIN 25 V,
f = 120 Hz, IO = 100 mA 50 64 dB
Dropout Voltage VDIF TJ = 25°C 1.1 V
Short Circuit Current IOshort TJ = 25°C, VIN = 30 V 400 mA
Peak Output Current IOpeak TJ = 25°C 620 880 1020 mA
Temperature Coefficient of
Output Voltage
Δ
VO/
Δ
T IO = 5 mA
0.4 mV/°C
μ
PC79M15 (VIN = 23 V, IO = 350 mA, 0°C TJ +125°C, CIN = 2.2
μ
F, COUT = 1
μ
F, unless otherwise specified)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
TJ = 25°C 14.4 15.0 15.6 V Output Voltage VO
17.5 V VIN 30 V, 5 mA IO 350 mA 14.25 15.75 V
TJ = 25°C, 17.5 V VIN 30 V 30 80 mV Line Regulation REGIN
TJ = 25°C, 18 V VIN 28 V 25 50 mV
TJ = 25°C, 5 mA IO 500 mA 50 240 mV Load Regulation REGL
TJ = 25°C, 5 mA IO 350 mA 35 mV
Quiescent Current IBIAS TJ = 25°C 4.4 6.0 mA
17.5 V VIN 30 V 0.5 mA Quiescent Current Change
Δ
IBIAS
5 mA IO 350 mA 0.4 mA
Output Noise Voltage Vn TJ = 25°C, 10 Hz f 100 kHz 150 360
μ
Vr.m.s.
Ripple Rejection R•R TJ = 25°C, 18.5 V VIN 28.5 V,
f = 120 Hz, IO = 100 mA
50 62 dB
Dropout Voltage VDIF TJ = 25°C 1.1 V
Short Circuit Current IOshort TJ = 25°C, VIN = 30 V 400 mA
Peak Output Current IOpeak TJ = 25°C 620 880 1020 mA
Temperature Coefficient of
Output Voltage
Δ
VO/
Δ
T IO = 5 mA
0.6 mV/°C
Data Sheet G11629EJ7V0DS
6
μ
PC79Mxx Series
μ
PC79M18 (VIN = 27 V, IO = 350 mA, 0°C TJ +125°C, CIN = 2.2
μ
F, COUT = 1
μ
F, unless otherwise specified)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
TJ = 25°C 17.3 18.0 18.7 V Output Voltage VO
21 V VIN 33 V, 5 mA IO 350 mA 17.1 18.9 V
TJ = 25°C, 21 V VIN 33 V 30 80 mV Line Regulation REGIN
TJ = 25°C, 24 V VIN 30 V 25 50 mV
TJ = 25°C, 5 mA IO 500 mA 60 300 mV Load Regulation REGL
TJ = 25°C, 5 mA IO 350 mA 45 mV
Quiescent Current IBIAS TJ = 25°C 4.4 6.0 mA
21 V VIN 33 V 0.5 mA Quiescent Current Change
Δ
IBIAS
5 mA IO 350 mA 0.4 mA
Output Noise Voltage Vn TJ = 25°C, 10 Hz f 100 kHz 200 440
μ
Vr.m.s.
Ripple Rejection R•R TJ = 25°C, 22 V VIN 32 V,
f = 120 Hz, IO = 100 mA 50 60 dB
Dropout Voltage VDIF TJ = 25°C 1.1 V
Short Circuit Current IOshort TJ = 25°C, VIN = 33 V 350 mA
Peak Output Current IOpeak TJ = 25°C 620 880 1020 mA
Temperature Coefficient of
Output Voltage
Δ
VO/
Δ
T IO = 5 mA
0.8 mV/°C
μ
PC79M24 (VIN = 33 V, IO = 350 mA, 0°C TJ +125°C, CIN = 2.2
μ
F, COUT = 1
μ
F, unless otherwise specified)
Parameter Symbol Conditions MIN. TYP. MAX. Unit
TJ = 25°C 23.0 24.0 25.0 V Output Voltage VO
27 V VIN 38 V, 5 mA IO 350 mA 22.8 25.2 V
TJ = 25°C, 27 V VIN 38 V 30 80 mV Line Regulation REGIN
TJ = 25°C, 30 V VIN 36 V 25 50 mV
TJ = 25°C, 5 mA IO 500 mA 80 360 mV Load Regulation REGL
TJ = 25°C, 5 mA IO 350 mA 50 mV
Quiescent Current IBIAS TJ = 25°C 4.5 6.0 mA
27 V VIN 38 V 0.5 mA Quiescent Current Change
Δ
IBIAS
5 mA IO 350 mA 0.4 mA
Output Noise Voltage Vn TJ = 25°C, 10 Hz f 100 kHz 250 600
μ
Vr.m.s.
Ripple Rejection R•R TJ = 25°C, 28 V VIN 38 V,
f = 120 Hz, IO = 100 mA
50 57 dB
Dropout Voltage VDIF TJ = 25°C 1.1 V
Short Circuit Current IOshort TJ = 25°C, VIN = 38 V 200 mA
Peak Output Current IOpeak TJ = 25°C 620 880 1020 mA
Temperature Coefficient of
Output Voltage
Δ
VO/
Δ
T IO = 5 mA
1.0 mV/°C
Data Sheet G11629EJ7V0DS 7
μ
PC79Mxx Series
TYPICAL CHARACTERISTICS (TJ = 25°C, unless otherwise specified)
V
IN
=
10 V
I
O
= 5 mA
I
O
= 350 mA
8 VV
IN
≤ −18 V
f = 120 Hz
C
OUT
= 1 F
P
D
VS.
T
A
P
D
Power Dissipation W
T
A
Operating Ambient Temperature °C
25
20
15
10
5
0 25 50 75 100 125 150
V
O
VS.
V
IN
(
PC79M05)
V
O
Output Voltage
V
V
IN
Input Voltage
V
8
6
7
5
4
3
2
1
012354768
f Frequency H
Z
80
60
70
50
40
30
20
10 100 1 k 10 k 100 k
I
BIAS
VS.
V
IN
(
PC79M05)
I
BIAS
Quiescent Current
mA
RR
Ripple Rejection
dB
RR
Ripple Rejection
dB
V
IN
Input Voltage
V
8
7
6
4
5
3
1
2
010 20 30
I
O
Output Current mA
90
80
70
60
0
50 100 200 300 400 500
V
O
VS.
T
J
(
PC79M05)
V
O
Output Voltage Change mV
T
J
Operating Junction Temperature °C
20
0
20
40
60
80 025 25 50 75 100 125 150
8 VV
IN
18 V
I
O
= 100 mA
C
OUT
= 1 F
I
O
= 5 mA 500 mA
350 mA
Infinite heatsink
Without heatsink
With10 °C/W heatsink
μ
μ μ
RR
VS.
f (
PC79M05) R
R
VS.
I
O
(
PC79M05)
μ
μ
μ
μ
Δ
Δ
85°C
Data Sheet G11629EJ7V0DS
8
μ
PC79Mxx Series
T
J
= 20°C
+25°C
+125°C
ΔV
O
= 2 V
O
I
Opeak
VS.
(V
IN
V
O
)
I
Opeak
Peak Output Current A
(V
IN
V
O
) Input to Output Voltage Differential V
1.5
1.0
0.5
0102030
LINE TRANSIENT RESPONSE ( PC79M05)
V
O
Output Voltage
Change V V
IN
Input Voltage V
t Time s
15
20
10
0.5
0
0.5
020406080
R
O
VS.
f (
PC79M05)
R
O
Output Impedance − Ω
f Frequency - Hz
10
1
0.1
0.01
0.001 10 100 1 k 10 k 100 k
V
IN
= 10 V
300 mA I
O
400 mA
C
IN
= 2.2 F
C
OUT
= 1 F
0.5
1.0
0
0.1
0
0.1
020406080
V
IN
= 10 V
C
OUT
= 1 F
I
O
= 350 mA
C
OUT
= 1 F
μ
μ
μ
μ
μ
LOAD TRANSIENT RESPONSE ( PC79M05)
V
O
Output Voltage
Change V I
O
Load Current A
t Time s
μ
μ
μ μ
Δ
Δ
Data Sheet G11629EJ7V0DS 9
μ
PC79Mxx Series
PACKAGE DRAWING (Unit: mm)
D 17.0±0.3
3PIN PLASTIC SIP (MP-45G)
NOTE
Each lead centerline is located within 0.25 mm of
its true position (T.P.) at maximum material condition.
ITEM MILLIMETERS
P3HF-254B-4
G 0.25
H 2.54 (T.P.)
A 10.0±0.2
I 5.0±0.3
U 2.4±0.5
V
Y 8.9±0.7
Z 1.30±0.2
J
K
L 8.5±0.2
B 7.0±0.2
C 1.50±0.2
E
F 0.75±0.10
M 8.5±0.2
N
P 2.8±0.2
3.3±0.2
φ
2.46±0.2
5.0±0.2
4.5±0.2
0.65±0.10
132
M
A
BE
I
D
L
M
K
Y
J
H
C
FG
Z
N
P
U
V
<R>
Data Sheet G11629EJ7V0DS
10
μ
PC79Mxx Series
RECOMMENDED SOLDERING CONDITIONS
The
μ
PC79Mxx Series should be soldered and mounted under the following recommended conditions.
For soldering methods and conditions other than those recommended below, contact an NEC Electronics sales
representative.
For technical information, see the following website.
Semiconductor Device Mount Manual (http://www.necel.com/pkg/en/mount/index.html)
Through-hole devices
μ
PC79M05HF, 79M08HF, 79M12HF, 79M15HF, 79M18HF, 79M24HF,
μ
PC79M05HF-AZ, 79M08HF-AZ, 79M12HF-AZ, 79M15HF-AZ, 79M18HF-AZ, 79M24HF-AZ : 3-PIN PLASTIC SIP (MP-45G)
(Isolated TO-220 )
Process Conditions Symbol
Wave soldering
(only to leads)
Solder temperature: 260°C or below, Flow time: 10 seconds or less,
Maximum number of flow processes: 1 time.
WS60-00-1
Partial heating method Pin temperature: 350°C or below,
Heat time: 3 seconds or less (Per each pin).
P350
Caution For through-hole device, the wave soldering process must be applied only to leads, and make sure that
the package body does not get jet soldered.
REFERENCE DOCUMENTS
Document Name Document No.
Usage of Three-Terminal Regulators User’s Manual G12702E
Semiconductor Device Mount Manual http://www.necel.com/pkg/en/mount/index.html
Review of Quality and Reliability Handbook Information C12769E
<R>
<R>
μ
PC79Mxx Series
The information in this document is current as of January, 2007. The information is subject to
change without notice. For actual design-in, refer to the latest publications of NEC Electronics data
sheets or data books, etc., for the most up-to-date specifications of NEC Electronics products. Not
all products and/or types are available in every country. Please check with an NEC Electronics sales
representative for availability and additional information.
No part of this document may be copied or reproduced in any form or by any means without the prior
written consent of NEC Electronics. NEC Electronics assumes no responsibility for any errors that may
appear in this document.
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property rights of third parties by or arising from the use of NEC Electronics products listed in this document
or any other liability arising from the use of such products. No license, express, implied or otherwise, is
granted under any patents, copyrights or other intellectual property rights of NEC Electronics or others.
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The "Specific" quality grade applies only to NEC Electronics products developed based on a customer-
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Electronics data sheets or data books, etc. If customers wish to use NEC Electronics products in applications
not intended by NEC Electronics, they must contact an NEC Electronics sales representative in advance to
determine NEC Electronics' willingness to support a given application.
(Note)
M8E 02. 11-1
(1)
(2)
"NEC Electronics" as used in this statement means NEC Electronics Corporation and also includes its
majority-owned subsidiaries.
"NEC Electronics products" means any product developed or manufactured by or for NEC Electronics (as
defined above).
Computers, office equipment, communications equipment, test and measurement equipment, audio
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Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
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"Standard":
"Special":
"Specific":