SGS Thomson Microelectronics L78S10T, L78S09CV, L78S09CT, L78S05T, L78S05CV Datasheet

L78S00

SERIES

2A POSITIVE VOLTAGE REGULATORS

.OUTPUT CURRENT TO 2A

.

OUTPUT VOLTAGES OF 5 ; 7.5 ; 9 ; 10 ; 12 ; 15 ;

.18 ; 24V

.THERMAL OVERLOAD PROTECTION

.SHORT CIRCUIT PROTECTION

OUTPUT TRANSISTOR SOA PROTECTION

DESCRIPTION

The L78S00 series of three-terminal positive regulators is available in TO-220 and TO-3 packages and with several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 2A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.

TO-3

TO-220

BLOCK DIAGRAM

January 1993

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L78S00 SERIES

ABSOLUTE MAXIMUM RATINGS

Symbol

Vi

Io

Pt o t

T s t g

To p

Parameter	Value	Unit
DC Input Voltage (for Vo = 5 to 18V)	35	V
(for Vo = 24V)	40	V
Output Current	Internally limited
Power Dissipation	Internally limited
Storage Temperature	± 65 to + 150	°C
Operating Junction Temperature (for L78S00 )	± 55 to + 150	°C
(for L78S00C )	0 to + 150	°C

THERMAL DATA

			TO-220	TO-3
Rt h j- cas e	Thermal Resistance Junction-case	Max	3	4	°C/W
Rt h j -amb	Thermal Resistance Junction-ambient	Max	50	35	°C/W

CONNECTION DIAGRAMS AND ORDERING NUMBERS (top views)

Type	T O- 22 0	T O - 3	Output Voltage
L78S05		L78S05T	5 V
L78S05C	L78S05CV	L78S05CT	5 V
L78S75		L78S75T	7.5V
L78S75C	L78S75CV	L78S75CT	7.5V
L78S09		L78S09T	9 V
L78S09C	L78S09CV	L78S09CT	9 V
L78S10		L78S10T	10V
L78S10C	L78S10CV	L78S10CT	10V
L78S12		L78S12T	12V
L78S12C	L78S12CV	L78S12CT	12V
L78S15		L78S15T	15V
L78S15C	L78S15CV	L78S15CT	15V
L78S18		L78S18T	18V
L78S18C	L78S18CV	L78S18CT	18V
L78S24		L78S24T	24V
L78S24C	L78S24CV	L78S24CT	24V

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L78S00 SERIES

APPLICATION CIRCUIT

SCHEMATIC DIAGRAM

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L78S00 SERIES

TEST CIRCUITS
Figure 1 : DC Parameters.	Figure 2 : Load Regulation.

Figure 3 : Ripple Rejection.

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L78S00 SERIES

ELECTRICAL CHARACTERISTICS FOR L78S05 (refer to the test circuits, Tj = 25 oC, Vi = 10V, Io = 500 mA unless otherwise specified)

Symbol	Parameter	Test Conditions		Min.	Typ.	Max.	Unit
Vo	Output Voltage			4.8	5	5.2	V
Vo	Output Voltage	Io = 1 A	Vi = 7 V	4.75	5	5.25	V
Vo	Line Regulation	Vi = 7 to 25 V				100	mV
		Vi = 8 to 25 V				50	mV
Vo	Load Regulation	Io = 20 mA	to 2 A			100	mV
Id	Quiescent Current					8	mA
Id	Quiescent Current Change	Io = 20 mA to 1A				0.5	mA
Id	Quiescent Current Change	Io = 20 mA	Vi = 7 to 25 V			1.3	mA
Vo	Output Voltage Drift	Io = 5 mA	Tj = -55 to 150 oC		-1.1		mV/oC
T
eN	Output Noise Voltage	B = 10Hz to 100KHz			40		μV
SVR	Supply Voltage Rejection	f = 120 Hz		60			dB
Vi	Operating Input Voltage	Io ≤ 1.5 A		8			V
Ro	Output Resistance	f = 1KHz			17		mΩ
Isc	Short Circuit Current	Vi = 27 V			500		mA
Iscp	Short Circuit Peack Current				3		A

ELECTRICAL CHARACTERISTICS FOR L78S75 (refer to the test circuits, Tj = 25 oC, Vi = 12.5V, Io = 500 mA unless otherwise specified)

Symbol	Parameter	Test Conditions		Min.	Typ.	Max.	Unit
Vo	Output Voltage			7.15	7.5	7.9	V
Vo	Output Voltage	Io = 1 A	Vi = 9.5 V	7.1	7.5	7.95	V
Vo	Line Regulation	Vi = 9.5 to 25 V				120	mV
		Vi = 10.5 to 20 V				60	mV
Vo	Load Regulation	Io = 20 mA	to 2 A			120	mV
Id	Quiescent Current					8	mA
Id	Quiescent Current Change	Io = 20 mA to 1A				0.5	mA
Id	Quiescent Current Change	Io = 20 mA	Vi = 9.5 to 25 V			1.3	mA
Vo	Output Voltage Drift	Io = 5 mA	Tj = -55 to 150 oC		-0.8		mV/oC
T
eN	Output Noise Voltage	B = 10Hz to 100KHz			52		μV
SVR	Supply Voltage Rejection	f = 120 Hz		54			dB
Vi	Operating Input Voltage	Io ≤ 1.5 A		10.5			V
Ro	Output Resistance	f = 1KHz			16		mΩ
Isc	Short Circuit Current	Vi = 27 V			500		mA
Iscp	Short Circuit Peack Current				3		A

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L78S00 SERIES

ELECTRICAL CHARACTERISTICS FOR L78S09 (refer to the test circuits, Tj = 25 oC, Vi = 14V, Io = 500 mA unless otherwise specified)

Symbol	Parameter	Test Conditions		Min.	Typ.	Max.	Unit
Vo	Output Voltage			8.65	9	9.35	V
Vo	Output Voltage	Io = 1 A	Vi = 11 V	8.6	9	9.4	V
Vo	Line Regulation	Vi = 11 to 25 V				130	mV
		Vi = 11 to 20 V				65	mV
Vo	Load Regulation	Io = 20 mA	to 2 A			130	mV
Id	Quiescent Current					8	mA
Id	Quiescent Current Change	Io = 20 mA to 1A				0.5	mA
Id	Quiescent Current Change	Io = 20 mA	Vi = 11 to 25 V			1.3	mA
Vo	Output Voltage Drift	Io = 5 mA	Tj = -55 to 150 oC		-1		mV/oC
T
eN	Output Noise Voltage	B = 10Hz to 100KHz			60		μV
SVR	Supply Voltage Rejection	f = 120 Hz		53			dB
Vi	Operating Input Voltage	Io ≤ 1.5 A		12			V
Ro	Output Resistance	f = 1KHz			17		mΩ
Isc	Short Circuit Current	Vi = 27 V			500		mA
Iscp	Short Circuit Peack Current				3		A

ELECTRICAL CHARACTERISTICS FOR L78S10 (refer to the test circuits, Tj = 25 oC, Vi = 15V, Io = 500 mA unless otherwise specified)

Symbol	Parameter	Test Conditions		Min.	Typ.	Max.	Unit
Vo	Output Voltage			9.5	10	10.5	V
Vo	Output Voltage	Io = 1 A	Vi = 12.5 V	9.4	10	10.6	V
Vo	Line Regulation	Vi = 12.5 to 30 V				200	mV
		Vi = 14 to 22 V				100	mV
Vo	Load Regulation	Io = 20 mA	to 2 A			150	mV
Id	Quiescent Current					8	mA
Id	Quiescent Current Change	Io = 20 mA to 1A				0.5	mA
Id	Quiescent Current Change	Io = 20 mA	Vi = 12.5 to 30 V			1	mA
Vo	Output Voltage Drift	Io = 5 mA	Tj = -55 to 150 oC		-1		mV/oC
T
eN	Output Noise Voltage	B = 10Hz to 100KHz			65		μV
SVR	Supply Voltage Rejection	f = 120 Hz		53			dB
Vi	Operating Input Voltage	Io ≤ 1.5 A		13			V
Ro	Output Resistance	f = 1KHz			17		mΩ
Isc	Short Circuit Current	Vi = 27 V			500		mA
Iscp	Short Circuit Peack Current				3		A

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L78S00 SERIES

ELECTRICAL CHARACTERISTICS FOR L78S12 (refer to the test circuits, Tj = 25 oC, Vi = 19V, Io = 500 mA unless otherwise specified)

Symbol	Parameter	Test Conditions		Min.	Typ.	Max.	Unit
Vo	Output Voltage			11.5	12	12.5	V
Vo	Output Voltage	Io = 1 A	Vi = 14.5 V	11.4	12	12.6	V
Vo	Line Regulation	Vi = 14.5 to 30 V				240	mV
		Vi = 16 to 22 V				120	mV
Vo	Load Regulation	Io = 20 mA	to 2 A			160	mV
Id	Quiescent Current					8	mA
Id	Quiescent Current Change	Io = 20 mA to 1A				0.5	mA
Id	Quiescent Current Change	Io = 20 mA	Vi = 14.5 to 30 V			1	mA
Vo	Output Voltage Drift	Io = 5 mA	Tj = -55 to 150 oC		-1		mV/oC
T
eN	Output Noise Voltage	B = 10Hz to 100KHz			75		μV
SVR	Supply Voltage Rejection	f = 120 Hz		53			dB
Vi	Operating Input Voltage	Io ≤ 1.5 A		15			V
Ro	Output Resistance	f = 1KHz			18		mΩ
Isc	Short Circuit Current	Vi = 27 V			500		mA
Iscp	Short Circuit Peack Current				3		A

ELECTRICAL CHARACTERISTICS FOR L78S15 (refer to the test circuits, Tj = 25 oC, Vi = 23V, Io = 500 mA unless otherwise specified)

Symbol	Parameter	Test Conditions		Min.	Typ.	Max.	Unit
Vo	Output Voltage			14.4	15	15.6	V
Vo	Output Voltage	Io = 1 A	Vi = 17.5 V	14.25	15	15.75	V
Vo	Line Regulation	Vi = 17.5 to 30 V				300	mV
		Vi = 20 to 26 V				150	mV
Vo	Load Regulation	Io = 20 mA	to 2 A			180	mV
Id	Quiescent Current					8	mA
Id	Quiescent Current Change	Io = 20 mA to 1A				0.5	mA
Id	Quiescent Current Change	Io = 20 mA	Vi = 17.5 to 30 V			1	mA
Vo	Output Voltage Drift	Io = 5 mA	Tj = -55 to 150 oC		-1		mV/oC
T
eN	Output Noise Voltage	B = 10Hz to 100KHz			90		μV
SVR	Supply Voltage Rejection	f = 120 Hz		52			dB
Vi	Operating Input Voltage	Io ≤ 1.5 A		18			V
Ro	Output Resistance	f = 1KHz			19		mΩ
Isc	Short Circuit Current	Vi = 27 V			500		mA
Iscp	Short Circuit Peack Current				3		A

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