Texas Instruments UA78M24CKTPR, UA78M20Y, UA78M20CKTPR, UA78M15CKTPR, UA78M20CKC Datasheet

µA78M00 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS059D – JUNE 1976 – REVISED JULY 1999

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D

3-Terminal Regulators

D

Output Current up to 500 mA

D

No External Components

D

Internal Thermal-Overload Protection

D

High Power-Dissipation Capability

D

Internal Short-Circuit Current Limiting

D

Output Transistor Safe-Area Compensation

D

Direct Replacements for Fairchild µA78M00
Series

description

This series of fixed-voltage integrated-circuit
voltage regulators is designed for 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 can deliver 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.

The µA78M00C series is characterized for
operation over the virtual junction temperature
range of 0°C to 125°C.

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  1999, 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.

KC PACKAGE

(TOP VIEW)

The COMMON terminal is in electrical contact
with the mounting base.

TO-220AB

KTP PACKAGE

(TOP VIEW)

OUTPUT
COMMON
INPUT

OUTPUT

COMMON

INPUT

OUTPUT

INPUT

The COMMON terminal is in electrical contact with
the mounting base.

OUTPUT

COMMON

INPUT

COMMON

µA78M00 SERIES
POSITIVE-VOLTAGE REGULATORS

SLVS059D – JUNE 1976 – REVISED JULY 1999

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

AVAILABLE OPTIONS

PACKAGED DEVICES

T

J

VO(NOM)

(V)

HEAT-SINK

MOUNTED

(KC)

PLASTIC FLANGE

MOUNTED

(KTP)

CHIP

FORM

(Y)

5 µA78M05CKC µA78M05CKTP µA78M05Y
6 µA78M06CKC µA78M06CKTP µA78M06Y
8 µA78M08CKC µA78M08CKTP µA78M08Y
9 µA78M09CKC µA78M09CKTP µA78M09Y

0°C to 125°C

10 µA78M10CKC µA78M10CKTP µA78M10Y
12 µA78M12CKC µA78M12CKTP µA78M12Y
15 µA78M15CKC µA78M15CKTP µA78M15Y
20 µA78M20CKC µA78M20CKTP µA78M20Y
24 µA78M24CKC µA78M24CKTP µA78M24Y

The KTP package is only available taped and reeled. Add the suffix R to the device type (e.g.,
µA78M05CKTPR). Chip forms are tested at 25°C.

schematic

140 kΩ

INPUT

96 Ω 0.6 Ω

OUTPUT

0 to 20 kΩ

5.4 kΩ

COMMON

Resistor values shown are nominal.

µA78M00 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS059D – JUNE 1976 – REVISED JULY 1999

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

absolute maximum ratings over operating temperature range (unless otherwise noted)

†

µA78Mxx UNIT

p

µA78M20, µA78M24 40

Input voltage, V

I

All others 35

V

p

KC package 22

°

Package thermal impedance, θ

JA

(see Notes 1 and 2)

KTP package 28

°C

Virtual junction temperature range, T

J

0 to 150 °C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 °C
Storage temperature range, T

stg

–65 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.

NOTES: 1. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable

ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability. Due to
variations in individual device electrical characteristics and thermal resistance, the built-in thermal-overload protection may be
activated at power levels slightly above or below the rated dissipation.

2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.

recommended operating conditions

MIN MAX UNIT

µA78M05 7 25
µA78M06 8 25
µA78M08 10.5 25
µA78M09 11.5 26

Input voltage, V

I

µA78M10 12.5 28

V

µA78M12 14.5 30
µA78M15 17.5 30
µA78M20 23 35
µA78M24 27 38

Output current, I

O

500 mA

Operating virtual junction temperature, T

J

0 125 °C

µA78M00 SERIES
POSITIVE-VOLTAGE REGULATORS

SLVS059D – JUNE 1976 – REVISED JULY 1999

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

electrical characteristics at specified virtual junction temperature, VI = 10 V , IO = 350 mA, TJ = 25°C
(unless otherwise noted)

µA78M05C

PARAMETER

TEST CONDITIONS

†

MIN TYP MAX

UNIT

4.8 5 5.2

O

utput voltage

V

I

=

7 V to 20 V

TJ = 0°C to 125°C 4.75 5.25

V

VI = 7 V to 25 V 3 100

Input voltage regulation IO = 200 mA

VI = 8 V to 20 V

mV

VI = 8 V to 25 V 1 50

pp

V

= 8 V to 18 V,

IO = 100 mA, TJ = 0°C to 125°C 62

Ripple rejection

I

,

f = 120 Hz

IO = 300 mA 62 80

dB

p

IO = 5 mA to 500 mA 20 100

Output voltage regulation

IO = 5 mA to 200 mA 10 50

mV

Temperature coefficient of output voltage IO = 5 mA, TJ = 0°C to 125°C –1 mV/°C
Output noise voltage f = 10 Hz to 100 kHz 40 200 µV
Dropout voltage 2 V
Bias current 4.5 6 mA

IO = 200 mA, VI = 8 V to 25 V, TJ = 0°C to 125°C 0.8

Bias current change

IO = 5 mA to 350 mA TJ = 0°C to 125°C 0.5

mA

Short-circuit output current VI = 35 V 300 mA
Peak output current 0.7 A

†

All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Pulse-testing techniques
maintain TJ as close to TA as possible. Thermal effects must be taken into account separately .

electrical characteristics at specified virtual junction temperature, VI = 11 V, IO = 350 mA, TJ = 25°C
(unless otherwise noted)

µA78M06C

PARAMETER

TEST CONDITIONS

†

MIN TYP MAX

UNIT

5.75 6 6.25

O

utput voltage

I

O

=

5 mA to 350 mA

,

V

I

=

8 V to 21 V

TJ = 0°C to 125°C 5.7 6.3

V

p

VI = 8 V to 25 V 5 100

Input voltage regulation

I

O

=

200 mA

VI = 9 V to 25 V 1.5 50

mV

Ripple rejection V

= 9 V to 19 V, f = 120 Hz

IO = 100 mA,
TJ = 0°C to 125°C

59

dB

jI,

IO = 300 mA 59 80

p

IO = 5 mA to 500 mA 20 120

Output voltage regulation

IO = 5 mA to 200 mA 10 60

mV

T emperature coef ficient
of output voltage

IO = 5 mA, TJ = 0°C to 125°C –1 mV/°C

Output noise voltage f = 10 Hz to 100 kHz 45 µV
Dropout voltage 2 V
Bias current 4.5 6 mA

VI = 9 V to 25 V, IO = 200 mA, TJ = 0°C to 125°C 0.8

Bias current change

IO = 5 mA to 350 mA, TJ = 0°C to 125°C 0.5

mA

Short-circuit output current VI = 35 V 270 mA
Peak output current 0.7 A

†

All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Pulse-testing techniques
maintain TJ as close to TA as possible. Thermal effects must be taken into account separately .