ST L78M00AB, L78M00AC User Manual

L78M00AB/AC

SERIES

PRECISION 500mA REGULATORS

■OUTPUT CURRENT TO 0.5A

■OUTPUT VOLTAGES OF 5; 6; 8; 9; 10; 12; 15; 18; 20; 24V

■THERMAL OVERLOAD PROTECTION

■SHORT CIRCUIT PROTECTION

■OUTPUT TRANSITION SOA PROTECTION

■±2% OUTPUT VOLTAGE TOLERANCE

■GUARANTEED IN EXTENDED TEMPERATURE RANGE

DESCRIPTION

The L78M00AB series of three-terminal positive regulators is available in TO-220 and DPAK 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 0.5A output current. Although designed primarily as fixed

TO-220

DPAK

voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.

SCHEMATIC DIAGRAM

October 2003

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L78M00AB/AC SERIES

ABSOLUTE MAXIMUM RATINGS

	Symbol	Parameter²		Value	Unit
	VI	DC Input Voltage	for VO = 5 to 18V	35	V
			for VO = 20, 24V	40
	IO	Output Current		Internally Limited
	Ptot	Power Dissipation		Internally Limited
	Tstg	Storage Temperature Range		-65 to +150	°C
	Top	Operating Junction Temperature	for L78M00AC	0 to 125	°C
		Range
			for L78M00AB	-40 to 125

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.

THERMAL DATA

Symbol	Parameter		TO-220	DPAK	Unit
Rthj-case	Thermal Resistance Junction-case	MAX	3	8	°C/W
Rthj-amb	Thermal Resistance Junction-ambient	MAX	50	100	°C/W

SHEMATIC DIAGRAM

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L78M00AB/AC SERIES

CONNECTION DIAGRAM (top view)

TO-220

DPAK

ORDERING CODES

TYPE

TO-220

DPAK (*)

OUTPUT VOLTAGE

L78M05AB

L78M05ABV

L78M05ABDT

5 V

L78M05AC

L78M05ACDT

5 V

L78M06AB

L78M06ABV

L78M06ABDT

6 V

L78M06AC

L78M06ACDT

6 V

L78M08AB

L78M08ABV

L78M08ABDT

8 V

L78M08AC

L78M08ACDT

8 V

L78M09AB

L78M09ABV

L78M09ABDT

9 V

L78M09AC

L78M09ACDT

9 V

L78M10AB

L78M10ABV

L78M10ABDT

10 V

L78M10AC

L78M10ACDT

10 V

L78M12AB

L78M12ABV

L78M12ABDT

12 V

L78M12AC

L78M12ACDT

12 V

L78M15AB

L78M15ABV

L78M15ABDT

15 V

L78M15AC

L78M15ACDT

15 V

L78M18AB

L78M18ABV

L78M18ABDT

18 V

L78M18AC

L78M18ACDT

18 V

L78M20AB

L78M20ABV

L78M20ABDT

20 V

L78M20AC

L78M20ACDT

20 V

L78M24AB

L78M24ABV

L78M24ABDT

24 V

L78M24AC

L78M24ACDT

24 V

(*) Available in Tape & Reel with the suffix "-TR".

APPLICATION CIRCUITS

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L78M00AB/AC SERIES

TEST CIRCUITS

Figure 1 : DC Parameter

Figure 2 : Load Regulation

Figure 3 : Ripple Rejection

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L78M00AB/AC SERIES

ELECTRICAL CHARACTERISTICS OF L78M05XX (refer to the test circuits, VI = 10V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = -40 to 125°C (AB), T J = 0 to 125°C (AC) unless otherwise specified)

Symbol	Parameter	Test Conditions			Min.	Typ.	Max.	Unit
VO	Output Voltage	TJ = 25°C			4.9	5	5.1	V
VO	Output Voltage	IO = 5 to 350 mA	VI = 7 to 20 V		4.8	5	5.2	V
VO	Line Regulation	VI = 7 to 25 V, IO = 200 mA		TJ = 25°C			100	mV
		VI = 8 to 25 V, IO = 200 mA		TJ = 25°C			50
VO	Load Regulation	IO = 5 to 500 mA	TJ = 25°C				100	mV
		IO = 5 to 200 mA	TJ = 25°C				50
Id	Quiescent Current	TJ = 25°C					6	mA
Id	Quiescent Current Change	IO = 5 to 350 mA					0.5	mA
		IO = 200 mA	VI = 8 to 25 V				0.8
VO/ T	Output Voltage Drift	IO = 5 mA				-0.5		mV/°C
SVR	Supply Voltage Rejection	VI = 8 to 18 V	f = 120Hz		62			dB
		IO = 300mA	TJ = 25°C
eN	Output Noise Voltage	B =10Hz to 100KHz	TJ = 25°C			40		μV
Vd	Dropout Voltage	TJ = 25°C				2		V
Isc	Short Circuit Current	TJ = 25°C	V I = 35 V			300		mA
Iscp	Short Circuit Peak Current	TJ = 25°C				700		mA

ELECTRICAL CHARACTERISTICS OF L78M06XX (refer to the test circuits, VI = 11V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = -40 to 125°C (AB), T J = 0 to 125°C (AC) unless otherwise specified)

Symbol	Parameter	Test Conditions			Min.	Typ.	Max.	Unit
VO	Output Voltage	TJ = 25°C			5.88	6	6.12	V
VO	Output Voltage	IO = 5 to 350 mA	VI = 8 to 21 V		5.75	6	6.3	V
VO	Line Regulation	VI = 8 to 25 V, IO = 200 mA		TJ = 25°C			100	mV
		VI = 9 to 25 V, IO = 200 mA		TJ = 25°C			30
VO	Load Regulation	IO = 5 to 500 mA	TJ = 25°C				120	mV
		IO = 5 to 200 mA	TJ = 25°C				60
Id	Quiescent Current	TJ = 25°C					6	mA
Id	Quiescent Current Change	IO = 5 to 350 mA					0.5	mA
		IO = 200 mA	VI = 9 to 25 V				0.8
VO/ T	Output Voltage Drift	IO = 5 mA				-0.5		mV/°C
SVR	Supply Voltage Rejection	VI = 9 to 19 V	f = 120Hz		59			dB
		IO = 300mA	TJ = 25°C
eN	Output Noise Voltage	B =10Hz to 100KHz				45		μV
Vd	Dropout Voltage	TJ = 25°C				2		V
Isc	Short Circuit Current	TJ = 25°C V I = 35 V				270		mA
Iscp	Short Circuit Peak Current	TJ = 25°C				700		mA

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L78M00AB/AC SERIES

ELECTRICAL CHARACTERISTICS OF L78M08XX (refer to the test circuits, VI = 14V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = -40 to 125°C (AB), T J = 0 to 125°C (AC) unless otherwise specified)

Symbol	Parameter	Test Conditions			Min.	Typ.	Max.	Unit
VO	Output Voltage	TJ = 25°C			7.84	8	8.16	V
VO	Output Voltage	IO = 5 to 350 mA	VI = 10.5 to 23 V		7.7	8	8.3	V
VO	Line Regulation	VI = 10.5 to 25 V, IO = 200 mA		TJ = 25°C			100	mV
		VI = 11 to 25 V, IO = 200 mA		TJ = 25°C			30
VO	Load Regulation	IO = 5 to 500 mA	TJ = 25°C				160	mV
		IO = 5 to 200 mA	TJ = 25°C				80
Id	Quiescent Current	TJ = 25°C					6	mA
Id	Quiescent Current Change	IO = 5 to 350 mA					0.5	mA
		IO = 200 mA	VI = 10.5 to 25 V				0.8
VO/ T	Output Voltage Drift	IO = 5 mA				-0.5		mV/°C
SVR	Supply Voltage Rejection	VI = 11.5 to 21.5 V	f = 120Hz		56			dB
		IO = 300mA	TJ = 25°C
eN	Output Noise Voltage	B =10Hz to 100KHz	TJ = 25°C			52		μV
Vd	Dropout Voltage	TJ = 25°C				2		V
Isc	Short Circuit Current	TJ = 25°C V I = 35 V				250		mA
Iscp	Short Circuit Peak Current	TJ = 25°C				700		mA

ELECTRICAL CHARACTERISTICS OF L78M09XX (refer to the test circuits, VI = 14V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF, TJ = -40 to 125°C (AB), T J = 0 to 125°C (AC) unless otherwise specified)

Symbol	Parameter	Test Conditions			Min.	Typ.	Max.	Unit
VO	Output Voltage	TJ = 25°C			8.82	9	9.18	V
VO	Output Voltage	IO = 5 to 350 mA	VI = 11.5 to 24 V		8.64	9	9.36	V
VO	Line Regulation	VI = 11.5 to 25 V, IO = 200 mA		TJ = 25°C			100	mV
		VI = 12 to 25 V, IO = 200 mA		TJ = 25°C			30
VO	Load Regulation	IO = 5 to 500 mA	TJ = 25°C				180	mV
		IO = 5 to 200 mA	TJ = 25°C				90
Id	Quiescent Current	TJ = 25°C					6	mA
Id	Quiescent Current Change	IO = 5 to 350 mA					0.5	mA
		IO = 200 mA	VI = 11.5 to 25 V				0.8
VO/ T	Output Voltage Drift	IO = 5 mA				-0.5		mV/°C
SVR	Supply Voltage Rejection	VI = 12.5 to 23 V	f = 120Hz		56			dB
		IO = 300mA	TJ = 25°C
eN	Output Noise Voltage	B =10Hz to 100KHz	TJ = 25°C			52		μV
Vd	Dropout Voltage	TJ = 25°C				2		V
Isc	Short Circuit Current	TJ = 25°C V I = 35 V				250		mA
Iscp	Short Circuit Peak Current	TJ = 25°C				700		mA

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