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

								A78M00 SERIES
			POSITIVE-VOLTAGE REGULATORS
						SLVS059D ± JUNE 1976 ± REVISED JULY 1999
	D	3-Terminal Regulators				KC PACKAGE
	D Output Current up to 500 mA					(TOP VIEW)
	D	No External Components						OUTPUT
	D Internal Thermal-Overload Protection							COMMON
								INPUT
	D High Power-Dissipation Capability
			The COMMON terminal is in electrical contact
	D Internal Short-Circuit Current Limiting
			with the mounting base.

DOutput Transistor Safe-Area Compensation

	D Direct Replacements for Fairchild A78M00	TO-220AB
	Series	OUTPUT
		COMMON
		INPUT

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

KTP PACKAGE

of output current. The internal current-limiting and

(TOP VIEW)

thermal-shutdown features of these regulators

OUTPUT

essentially make them immune to overload. In

addition to use as fixed-voltage regulators, these

COMMON

devices can be used with external components to

INPUT

obtain adjustable output voltages and currents

and also as the power-pass element in precision

The COMMON terminal is in electrical contact with

regulators.

the mounting base.

The A78M00C series is characterized for

OUTPUT

operation over the virtual junction temperature

INPUT

range of 0°C to 125°C.

COMMON

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.

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.

Copyright 1999, Texas Instruments Incorporated

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1

A78M00 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS059D ± JUNE 1976 ± REVISED JULY 1999

AVAILABLE OPTIONS

			PACKAGED DEVICES		CHIP
		VO(NOM)
			HEAT-SINK	PLASTIC FLANGE
	TJ				FORM
		(V)	MOUNTED	MOUNTED
			(KC)	(KTP)	(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

INPUT

140 kΩ

96 Ω 0.6 Ω

OUTPUT

0 to 20 kΩ

5.4 kΩ

COMMON

Resistor values shown are nominal.

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A78M00 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS059D ± JUNE 1976 ± REVISED JULY 1999

absolute maximum ratings over operating temperature range (unless otherwise noted)²

			µA78Mxx	UNIT
	Input voltage, VI	µA78M20, µA78M24	40	V
		All others	35
	Package thermal impedance, θJA (see Notes 1 and 2)	KC package	22	°C
		KTP package	28
	Virtual junction temperature range, TJ		0 to 150	°C
	Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds		260	°C
	Storage temperature range, Tstg		±65 to 150	°C

²Stresses beyond those listed under ªabsolute maximum ratingsº 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 ªrecommended operating conditionsº 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, VI	µA78M10	12.5	28	V
	µA78M12	14.5	30
	µA78M15	17.5	30
	µA78M20	23	35
	µA78M24	27	38
Output current, IO			500	mA
Operating virtual junction temperature, TJ		0	125	°C

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3

A78M00 SERIES

POSITIVE-VOLTAGE REGULATORS

SLVS059D ± JUNE 1976 ± REVISED JULY 1999

electrical characteristics at specified virtual junction temperature, VI = 10 V, IO = 350 mA, TJ = 25°C

(unless otherwise noted)

	PARAMETER	TEST CONDITIONS²		A78M05C			UNIT
				MIN	TYP	MAX
	Output voltage	VI = 7 V to 20 V		4.8	5	5.2	V
			TJ = 0°C to 125°C	4.75		5.25
			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
		V = 8 V to 18 V,	IO = 100 mA, TJ = 0°C to 125°C	62
	Ripple rejection	I					dB
		f = 120 Hz	IO = 300 mA	62	80
	Output voltage regulation	IO = 5 mA to 500 mA			20	100	mV
		IO = 5 mA to 200 mA			10	50
	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	V
	Dropout voltage				2		V
	Bias current				4.5	6	mA
	Bias current change	IO = 200 mA,	VI = 8 V to 25 V, TJ = 0°C to 125°C			0.8	mA
		IO = 5 mA to 350 mA	TJ = 0°C to 125°C			0.5
	Short-circuit output current	VI = 35 V			300		mA
	Peak output current				0.7		A

²All characteristics are measured with a 0.33- F capacitor across the input and a 0.1- F 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)

PARAMETER		TEST CONDITIONS²			A78M06C			UNIT
					MIN	TYP	MAX
Output voltage	IO = 5 mA to 350 mA,		VI = 8 V to 21 V		5.75	6	6.25	V
				TJ = 0°C to 125°C	5.7		6.3
Input voltage regulation	IO = 200 mA		VI = 8 V to 25 V			5	100	mV
			VI = 9 V to 25 V			1.5	50
				IO = 100 mA,	59
Ripple rejection	VI = 9 V to 19 V,		f = 120 Hz	TJ = 0°C to 125°C				dB
				IO = 300 mA	59	80
Output voltage regulation	IO = 5 mA to 500 mA					20	120	mV
	IO = 5 mA to 200 mA					10	60
Temperature coefficient	IO = 5 mA,		TJ = 0°C to 125°C			±1		mV/°C
of output voltage
Output noise voltage	f = 10 Hz to 100 kHz					45		V
Dropout voltage						2		V
Bias current						4.5	6	mA
Bias current change	VI = 9 V to 25 V,		IO = 200 mA,	TJ = 0°C to 125°C			0.8	mA
	IO = 5 mA to 350 mA,		TJ = 0°C to 125°C				0.5
Short-circuit output current	VI = 35 V					270		mA
Peak output current						0.7		A

²All characteristics are measured with a 0.33- F capacitor across the input and a 0.1- F capacitor across the output. Pulse-testing techniques maintain TJ as close to TA as possible. Thermal effects must be taken into account separately.

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