A79M00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS060J JUNE 1976 REVISED MAY 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
3-Terminal Regulators
D
Output Current Up To 500 mA
D
No External Components
D
High Power-Dissipation Capability
D
Internal Short-Circuit Current Limiting
D
Output Transistor Safe-Area Compensation
A79M05,
A79M08 . . . KTP PACKAGE
(TOP VIEW)
OUTPUT
INPUT
COMMON
INPUT
OUTPUT
A79M05 . . . KC (TO-220) PACKAGE
(TOP VIEW)
COMMON
INPUT
INPUT
OUTPUT
A79M05 . . . KCS (TO-220) PACKAGE
(TOP VIEW)
COMMON
INPUT
INPUT
description/ordering information
This series of fixed-negative-voltage integrated-circuit voltage regulators is designed to complement the
A78M00 series in a wide range of applications. These applications include on-card regulation for elimination
of noise and distribution problems associated with single-point regulation. Each of these regulators delivers up
to 500 mA of output current. The internal current-limiting and thermal-shutdown features of these regulators
essentially make them immune to overload. In addition to use as fixed-voltage regulators, these devices can
be used with external components to obtain adjustable output voltages and currents, and also as the
power-pass element in precision regulators.
ORDERING INFORMATION
TJ
VO(NOM)
(V)
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
Power Flex (KTP)
Reel of 3000
A79M05CKTPR
A79M05C
0
C to 125
C
5
TO-220 (KC)
Tube of 50
A79M05CKC
A79M05C
0
C to 125
C
TO-220, short shoulder (KCS)
Tube of 20
A79M05CKCS
A79M05C
8
Power Flex (KTP)
Reel of 3000
A79M08CKTPR
A79M08C
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright
2003, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
A79M00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS060J JUNE 1976 REVISED MAY 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
schematic
4.5 k
to 6.3 k
COMMON
OUTPUT
INPUT
0.1
0.2
1.7 k
to 18 k
Resistor values shown are nominal.
absolute maximum ratings over virtual junction temperature range (unless otherwise noted)
Input voltage, V
I
35 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature, T
J
150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
65
C to 150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
package thermal data (see Note 1)
PACKAGE
BOARD
JC
JA
POWER-FLEX (KTP)
High K, JESD 51-5
19
C/W
28
C/W
TO-220 (KC/KCS)
High K, JESD 51-5
3
C/W
19
C/W
NOTE 1: Maximum power dissipation is a function of TJ(max),
JA, and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) TA)/
JA. Operating at the absolute maximum TJ of 150
C can affect reliability.
A79M00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS060J JUNE 1976 REVISED MAY 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
MIN
MAX
UNIT
VI
Input voltage
A79M05C
7
25
V
VI
Input voltage
A79M08C
10.5
25
V
IO
Output current
500
mA
TJ
Operating virtual junction temperature
0
125
C
electrical characteristics at specified virtual junction temperature, V
I
= 10 V, I
O
= 350 mA, T
J
= 25
C
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
A79M05C
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Output voltage
VI = 7 V to 25 V
IO = 5 mA to 350 mA
4.8
5
5.2
V
Output voltage
VI = 7 V to 25 V,
IO = 5 mA to 350 mA
TJ = 0
C to 125
C
4.75
5.25
V
Input voltage regulation
VI = 7 V to 25 V
7
50
mV
Input voltage regulation
VI = 8 V to 18 V
3
30
mV
Ripple rejection
VI = 8 V to 18 V,
IO = 100 mA,
TJ = 0
C to 125
C
50
dB
Ripple rejection
I
,
f = 120 Hz
IO = 300 mA
54
60
dB
Output voltage regulation
IO = 5 mA to 500 mA
75
100
mV
Output voltage regulation
IO = 5 mA to 350 mA
50
mV
Temperature coefficient
of output voltage
IO = 5 mA,
TJ = 0
C to 125
C
0.4
mV/
C
Output noise voltage
f = 10 Hz to 100 kHz
125
V
Dropout voltage
1.1
V
Bias current
1
2
mA
Bias current change
VI = 8 V to 18 V,
TJ = 0
C to 125
C
0.4
mA
Bias current change
IO = 5 mA to 350 mA,
TJ = 0
C to 125
C
0.4
mA
Short-circuit output current
VI = 30 V
140
mA
Peak output current
0.65
A
Pulse-testing techniques maintain TJ as close to TA as possible. Thermal effects must be taken into account separately. All characteristics are
measured with a 2-
F capacitor across the input and a 1-
F capacitor across the output.
A79M00 SERIES
NEGATIVE-VOLTAGE REGULATORS
SLVS060J JUNE 1976 REVISED MAY 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics at specified virtual junction temperature, V
I
= 19 V, I
O
= 350 mA, T
J
= 25
C
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
A79M08C
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Output voltage
VI = 10 5 V to 25 V
IO = 5 mA to 350 mA
7.7
8
8.3
V
Output voltage
VI = 10.5 V to 25 V,
IO = 5 mA to 350 mA
TJ = 0
C to 125
C
7.6
8.4
V
Input voltage regulation
VI = 10.5 V to 25 V
8
80
mV
Input voltage regulation
VI = 11 V to 21 V
4
50
mV
Ripple rejection
VI = 11.5 V to 21.5 V,
IO = 100 mA,
TJ = 0
C to 125
C
50
dB
Ripple rejection
I
,
f = 120 Hz
IO = 300 mA
54
59
dB
Output voltage regulation
IO = 5 mA to 500 mA
90
160
mV
Output voltage regulation
IO = 5 mA to 350 mA
60
mV
Temperature coefficient
of output voltage
IO = 5 mA,
TJ = 0
C to 125
C
0.6
mV/
C
Output noise voltage
f = 10 Hz to 100 kHz
200
V
Dropout voltage
IO = 5 mA
1.1
V
Bias current
1
2
mA
Bias current change
VI = 10.5 V to 25 V,
TJ = 0
C to 125
C
0.4
mA
Bias current change
IO = 5 mA to 350 mA,
TJ = 0
C to 125
C
0.4
mA
Short-circuit output current
VI = 30 V
140
mA
Peak output current
0.65
A
Pulse-testing techniques maintain TJ as close to TA as possible. Thermal effects must be taken into account separately. All characteristics are
measured with a 2-
F capacitor across the input and a 1-
F capacitor across the output.
MECHANICAL DATA
MCFP001A JANUARY 1995 REVISED DECEMBER 1995
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
U (S-GDFP-F10)
CERAMIC DUAL FLATPACK
4040179 / B 03/95
0.080 (2,03)
0.250 (6,35)
0.019 (0,48)
4 Places
0.300 (7,62) MAX
0.045 (1,14)
0.008 (0,20)
0.050 (1,27)
0.015 (0,38)
0.005 (0,13) MIN
0.026 (0,66)
0.004 (0,10)
0.246 (6,10)
1
10
5
6
0.250 (6,35)
0.350 (8,89)
0.350 (8,89)
0.250 (6,35)
0.050 (1,27)
Base and Seating Plane
0.280 (7,11)
0.230 (5,84)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. This package can be hermetically sealed with a ceramic lid using glass frit.
D. Index point is provided on cap for terminal identification only.
E. Falls within MIL STD 1835 GDFP1-F10 and JEDEC MO-092AA
MECHANICAL DATA
MPSF001F JANUARY 1996 REVISED JANUARY 2002
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
KTP (R-PSFM-G2)
PowerFLEX
PLASTIC FLANGE-MOUNT PACKAGE
0.228 (5,79)
0.218 (5,54)
0.233 (5,91)
0.243 (6,17)
0.001 (0,02)
0.005 (0,13)
0.070 (1,78)
Seating Plane
0.080 (2,03)
0.010 (0,25) NOM
Gage Plane
0.010 (0,25)
4073388/M 01/02
0.037 (0,94)
0.047 (1,19)
0.247 (6,27)
0.237 (6,02)
NOM
0.215 (5,46)
0.371 (9,42)
0.381 (9,68)
0.090 (2,29)
0.100 (2,54)
0.287 (7,29)
0.031 (0,79)
0.032 (0,81) MAX
0.277 (7,03)
0.025 (0,63)
0.130 (3,30) NOM
0.090 (2,29)
0.180 (4,57)
M
0.010 (0,25)
0.004 (0,10)
2
6
0.040 (1,02)
0.050 (1,27)
Thermal Tab
(See Note C)
0.010 (0,25) NOM
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. The center lead is in electrical contact with the thermal tab.
D. Dimensions do not include mold protrusions, not to exceed 0.006 (0,15).
E. Falls within JEDEC TO-252 variation AC.
PowerFLEX is a trademark of Texas Instruments.
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Post Office Box 655303 Dallas, Texas 75265
Copyright
2004, Texas Instruments Incorporated
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