Fairchild Semiconductor KA7824A, KA7824, KA7818A, KA7818, KA7815A Datasheet

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KA78XX/KA78XXA

3-Terminal 1A Positive Voltage Regulator

Features		Description
• Output Current up to 1A		The KA78XX/KA78XXA series of three-terminal positive
• Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V		regulator are available in the TO-220/D-PAK package and
•	Thermal Overload Protection	with several fixed output voltages, making them useful in a
•	Short Circuit Protection	wide range of applications. Each type employs internal
• Output Transistor Safe Operating Area Protection		current limiting, thermal shut down and safe operating area
		protection, making it essentially indestructible. If adequate
		heat sinking is provided, they can deliver over 1A output
		current. Although designed primarily as fixed voltage
		regulators, these devices can be used with external
		components to obtain adjustable voltages and currents.
		TO-220

1

D-PAK

1

1. Input 2. GND 3. Output

Internal Block Digram

Rev. 1.0.0

©2001 Fairchild Semiconductor Corporation

KA78XX/KA78XXA

Absolute Maximum Ratings

Parameter	Symbol	Value	Unit
Input Voltage (for VO = 5V to 18V)	VI	35	V
(for VO = 24V)	VI	40	V
Thermal Resistance Junction-Cases (TO-220)	Rθ JC	5	° C/W
Thermal Resistance Junction-Air (TO-220)	Rθ JA	65	° C/W
Operating Temperature Range (KA78XX/A/R)	TOPR	0 ~ +125	° C
Storage Temperature Range	TSTG	-65 ~ +150	° C

Electrical Characteristics (KA7805/KA7805R)

(Refer to test circuit ,0° C < TJ < 125° C, IO = 500mA, VI =10V, CI= 0.33µ F, CO=0.1µ F, unless otherwise specified)

Parameter	Symbol	Conditions					KA7805				Unit
						Min.		Typ.		Max.
Output Voltage	VO	TJ =+25 oC				4.8		5.0		5.2
		5.0mA ≤ Io ≤ 1.0A, PO ≤ 15W									V
		VI = 7V to 20V				4.75		5.0		5.25
Line Regulation (Note1)	Regline	TJ=+25 oC		VO = 7V to 25V		-		4.0		100	mV
				VI	= 8V to 12V	-		1.6		50
Load Regulation (Note1)	Regload	TJ=+25 oC		IO = 5.0mA to1.5A		-		9		100	mV
				IO	=250mA to 750mA	-		4		50
Quiescent Current	IQ	TJ =+25 oC				-		5.0		8.0	mA
Quiescent Current Change	∆ IQ	IO = 5mA to 1.0A				-		0.03		0.5	mA
		VI= 7V to 25V				-		0.3		1.3
Output Voltage Drift	∆ VO/∆ T	IO= 5mA				-		-0.8		-	mV/ oC
Output Noise Voltage	VN	f = 10Hz to 100KHz, TA=+25 oC				-		42		-	µ V/VO
Ripple Rejection	RR	f = 120Hz				62		73		-	dB
		VO = 8V to 18V
Dropout Voltage	VDrop	IO = 1A, TJ =+25 oC				-		2		-	V
Output Resistance	rO	f = 1KHz				-		15		-	mΩ
Short Circuit Current	ISC	VI = 35V, TA =+25 oC				-		230		-	mA
Peak Current	IPK	TJ =+25 oC				-		2.2		-	A

Note:

1.Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulse testing with low duty is used.

2

KA78XX/KA78XXA

Electrical Characteristics (KA7806/KA7806R)

(Refer to test circuit ,0° C < TJ < 125° C, IO = 500mA, VI =11V, CI= 0.33µ F, CO=0.1µ F, unless otherwise specified)

Parameter	Symbol	Conditions					KA7806				Unit
						Min.		Typ.		Max.
Output Voltage	VO	TJ =+25 oC				5.75		6.0		6.25
		5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W									V
		VI = 8.0V to 21V				5.7		6.0		6.3
Line Regulation (Note1)	Regline	TJ =+25 oC		VI = 8V to 25V		-		5		120	mV
				VI	= 9V to 13V	-		1.5		60
Load Regulation (Note1)	Regload	TJ =+25 oC		IO =5mA to 1.5A		-		9		120	mV
				IO	=250mA to750mA	-		3		60
Quiescent Current	IQ	TJ =+25 oC				-		5.0		8.0	mA
Quiescent Current Change	∆ IQ	IO = 5mA to 1A				-		-		0.5	mA
		VI = 8V to 25V				-		-		1.3
Output Voltage Drift	∆ VO/∆ T	IO = 5mA				-		-0.8		-	mV/
											o
											C
Output Noise Voltage	VN	f = 10Hz to 100KHz, TA =+25 oC				-		45		-	µ V/Vo
Ripple Rejection	RR	f = 120Hz				59		75		-	dB
		VI = 9V to 19V
Dropout Voltage	VDrop	IO = 1A, TJ =+25 oC				-		2		-	V
Output Resistance	rO	f = 1KHz				-		19		-	mΩ
Short Circuit Current	ISC	VI= 35V, TA=+25 oC				-		250		-	mA
Peak Current	IPK	TJ =+25 oC				-		2.2		-	A

Note:

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

3

KA78XX/KA78XXA

Electrical Characteristics (KA7808/KA7808R)

(Refer to test circuit ,0° C < TJ < 125° C, IO = 500mA, VI =14V, CI= 0.33µ F, CO=0.1µ F, unless otherwise specified)

Parameter	Symbol		Conditions			KA7808				Unit
					Min.		Typ.		Max.
Output Voltage	VO	TJ =+25 oC			7.7		8.0		8.3
		5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W								V
		VI = 10.5V to 23V			7.6		8.0		8.4
Line Regulation (Note1)	Regline	TJ =+25 oC		VI = 10.5V to 25V	-		5.0		160	mV
				VI = 11.5V to 17V	-		2.0		80
Load Regulation (Note1)	Regload	TJ =+25 oC		IO = 5.0mA to 1.5A	-		10		160	mV
				IO= 250mA to	-		5.0		80
				750mA
Quiescent Current	IQ	TJ =+25 oC			-		5.0		8.0	mA
Quiescent Current Change	∆ IQ	IO = 5mA to 1.0A			-		0.05		0.5	mA
		VI = 10.5A to 25V			-		0.5		1.0
Output Voltage Drift	∆ VO/∆ T	IO = 5mA			-		-0.8		-	mV/ oC
Output Noise Voltage	VN	f = 10Hz to 100KHz, TA =+25 oC			-		52		-	µ V/Vo
Ripple Rejection	RR	f = 120Hz, VI= 11.5V to 21.5V			56		73		-	dB
Dropout Voltage	VDrop	IO = 1A, TJ=+25 oC			-		2		-	V
Output Resistance	rO	f = 1KHz			-		17		-	mΩ
Short Circuit Current	ISC	VI= 35V, TA =+25 oC			-		230		-	mA
Peak Current	IPK	TJ =+25 oC			-		2.2		-	A

Note:

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

4

KA78XX/KA78XXA

Electrical Characteristics (KA7809/KA7809R)

(Refer to test circuit ,0° C < TJ < 125° C, IO = 500mA, VI =15V, CI= 0.33µ F, CO=0.1µ F, unless otherwise specified)

Parameter	Symbol	Conditions			KA7809				Unit
				Min.		Typ.		Max.
Output Voltage	VO	TJ =+25 oC		8.65		9		9.35
		5.0mA≤ IO ≤ 1.0A, PO ≤ 15W							V
		VI= 11.5V to 24V		8.6		9		9.4
Line Regulation (Note1)	Regline	TJ=+25 oC	VI = 11.5V to 25V	-		6		180	mV
			VI = 12V to 17V	-		2		90
Load Regulation (Note1)	Regload	TJ=+25 oC	IO = 5mA to 1.5A	-		12		180	mV
			IO = 250mA to 750mA	-		4		90
Quiescent Current	IQ	TJ=+25 oC		-		5.0		8.0	mA
Quiescent Current Change	∆ IQ	IO = 5mA to 1.0A		-		-		0.5	mA
		VI = 11.5V to 26V		-		-		1.3
Output Voltage Drift	∆ VO/∆ T	IO = 5mA		-		-1		-	mV/ oC
Output Noise Voltage	VN	f = 10Hz to 100KHz, TA =+25 oC		-		58		-	µ V/Vo
Ripple Rejection	RR	f = 120Hz		56		71		-	dB
		VI = 13V to 23V
Dropout Voltage	VDrop	IO = 1A, TJ=+25 oC		-		2		-	V
Output Resistance	rO	f = 1KHz		-		17		-	mΩ
Short Circuit Current	ISC	VI= 35V, TA =+25 oC		-		250		-	mA
Peak Current	IPK	TJ= +25 oC		-		2.2		-	A

Note:

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

5

KA78XX/KA78XXA

Electrical Characteristics (KA7810)

(Refer to test circuit ,0° C < TJ < 125° C, IO = 500mA, VI =16V, CI= 0.33µ F, CO=0.1µ F, unless otherwise specified)

Parameter	Symbol	Conditions				KA7810				Unit
					Min.		Typ.		Max.
Output Voltage	VO	TJ =+25 oC			9.6		10		10.4
		5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W								V
		VI = 12.5V to 25V			9.5		10		10.5
Line Regulation (Note1)	Regline	TJ =+25 oC		VI = 12.5V to 25V	-		10		200	mV
				VI = 13V to 25V	-		3		100
Load Regulation (Note1)	Regload	TJ =+25 oC		IO = 5mA to 1.5A	-		12		200	mV
				IO = 250mA to 750mA	-		4		400
Quiescent Current	IQ	TJ =+25 oC			-		5.1		8.0	mA
Quiescent Current Change	∆ IQ	IO = 5mA to 1.0A			-		-		0.5	mA
		VI = 12.5V to 29V			-		-		1.0
Output Voltage Drift	∆ VO/∆ T	IO = 5mA			-		-1		-	mV/ oC
Output Noise Voltage	VN	f = 10Hz to 100KHz, TA =+25 oC			-		58		-	µ V/Vo
Ripple Rejection	RR	f = 120Hz			56		71		-	dB
		VI = 13V to 23V
Dropout Voltage	VDrop	IO = 1A, TJ=+25 oC			-		2		-	V
Output Resistance	rO	f = 1KHz			-		17		-	mΩ
Short Circuit Current	ISC	VI = 35V, TA=+25 oC			-		250		-	mA
Peak Current	IPK	TJ =+25 oC			-		2.2		-	A

Note:

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

6

KA78XX/KA78XXA

Electrical Characteristics (KA7812/KA7812R)

(Refer to test circuit ,0° C < TJ < 125° C, IO = 500mA, VI =19V, CI= 0.33µ F, CO=0.1µ F, unless otherwise specified)

	Parameter	Symbol	Conditions		KA7812/KA7812R			Unit
					Min.	Typ.	Max.
	Output Voltage	VO	TJ =+25 oC		11.5	12	12.5
			5.0mA ≤ IO≤ 1.0A, PO≤ 15W					V
			VI = 14.5V to 27V		11.4	12	12.6
	Line Regulation (Note1)	Regline	TJ =+25 oC	VI = 14.5V to 30V	-	10	240	mV
				VI = 16V to 22V	-	3.0	120
	Load Regulation (Note1)	Regload	TJ =+25 oC	IO = 5mA to 1.5A	-	11	240	mV
				IO = 250mA to 750mA	-	5.0	120
	Quiescent Current	IQ	TJ =+25 oC		-	5.1	8.0	mA
	Quiescent Current Change	∆ IQ	IO = 5mA to 1.0A		-	0.1	0.5	mA
			VI = 14.5V to 30V		-	0.5	1.0
	Output Voltage Drift	∆ VO/∆ T	IO = 5mA		-	-1	-	mV/ oC
	Output Noise Voltage	VN	f = 10Hz to 100KHz, TA =+25 oC		-	76	-	µ V/Vo
	Ripple Rejection	RR	f = 120Hz		55	71	-	dB
			VI = 15V to 25V
	Dropout Voltage	VDrop	IO = 1A, TJ=+25 oC		-	2	-	V
	Output Resistance	rO	f = 1KHz		-	18	-	mΩ
	Short Circuit Current	ISC	VI = 35V, TA=+25 oC		-	230	-	mA
	Peak Current	IPK	TJ = +25 oC		-	2.2	-	A

Note:

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

7

KA78XX/KA78XXA

Electrical Characteristics (KA7815)

(Refer to test circuit ,0° C < TJ < 125° C, IO = 500mA, VI =23V, CI= 0.33µ F, CO=0.1µ F, unless otherwise specified)

	Parameter	Symbol	Conditions				KA7815			Unit
							Min.	Typ.	Max.
	Output Voltage	VO	TJ =+25 oC				14.4	15	15.6
			5.0mA ≤ IO≤ 1.0A, PO≤ 15W							V
			VI = 17.5V to 30V				14.25	15	15.75
	Line Regulation (Note1)	Regline	TJ =+25 oC		VI = 17.5V to 30V		-	11	300	mV
					VI	= 20V to 26V	-	3	150
	Load Regulation (Note1)	Regload	TJ =+25 oC		IO = 5mA to 1.5A		-	12	300	mV
					IO	= 250mA to 750mA	-	4	150
	Quiescent Current	IQ	TJ =+25 oC				-	5.2	8.0	mA
	Quiescent Current Change	∆ IQ	IO = 5mA to 1.0A				-	-	0.5	mA
			VI = 17.5V to 30V				-	-	1.0
	Output Voltage Drift	∆ VO/∆ T	IO = 5mA				-	-1	-	mV/ oC
	Output Noise Voltage	VN	f = 10Hz to 100KHz, TA =+25 oC				-	90	-	µ V/Vo
	Ripple Rejection	RR	f = 120Hz				54	70	-	dB
			VI = 18.5V to 28.5V
	Dropout Voltage	VDrop	IO = 1A, TJ=+25 oC				-	2	-	V
	Output Resistance	rO	f = 1KHz				-	19	-	mΩ
	Short Circuit Current	ISC	VI = 35V, TA=+25 oC				-	250	-	mA
	Peak Current	IPK	TJ =+25 oC				-	2.2	-	A

Note:

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

8

KA78XX/KA78XXA

Electrical Characteristics (KA7818)

(Refer to test circuit ,0° C < TJ < 125° C, IO = 500mA, VI =27V, CI= 0.33µ F, CO=0.1µ F, unless otherwise specified)

Parameter	Symbol	Conditions			KA7818				Unit
				Min.		Typ.		Max.
Output Voltage	VO	TJ =+25 oC		17.3		18		18.7
		5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W							V
		VI = 21V to 33V		17.1		18		18.9
Line Regulation (Note1)	Regline	TJ =+25 oC	VI = 21V to 33V	-		15		360	mV
			VI = 24V to 30V	-		5		180
Load Regulation (Note1)	Regload	TJ =+25 oC	IO = 5mA to 1.5A	-		15		360	mV
			IO = 250mA to 750mA	-		5.0		180
Quiescent Current	IQ	TJ =+25 oC		-		5.2		8.0	mA
Quiescent Current Change	∆ IQ	IO = 5mA to 1.0A		-		-		0.5	mA
		VI = 21V to 33V		-		-		1
Output Voltage Drift	∆ VO/∆ T	IO = 5mA		-		-1		-	mV/ oC
Output Noise Voltage	VN	f = 10Hz to 100KHz, TA =+25 oC		-		110		-	µ V/Vo
Ripple Rejection	RR	f = 120Hz		53		69		-	dB
		VI = 22V to 32V
Dropout Voltage	VDrop	IO = 1A, TJ=+25 oC		-		2		-	V
Output Resistance	rO	f = 1KHz		-		22		-	mΩ
Short Circuit Current	ISC	VI = 35V, TA=+25 oC		-		250		-	mA
Peak Current	IPK	TJ =+25 oC		-		2.2		-	A

Note:

1.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.

9