ST L78M05C, L78M05CV, L78M05CV-DG, L78M05CP, L78M05CDT-TR User Manual

L78MxxC

Positive voltage regulators

Features

■Output current to 0.5 A

■Output voltages of 5; 6; 8; 9; 12; 15; 24 V

■Thermal overload protection

■Short circuit protection

■Output transition SOA protection

Description

The L78MxxC series of three-terminal positive regulators is available in TO-220, TO-220FP, DPAK and IPAK 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 shutdown and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 0.5 A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.

Datasheet − production data

TO-220

TO-220FP

DPAK

IPAK

	Table 1.	Device summary
	Part numbers				Order codes			Output
			TO-220	TO-220 (1)	TO-220FP	DPAK	IPAK	voltages
	L78M05C		L78M05CV	L78M05CV-DG	L78M05CP	L78M05CDT-TR	L78M05CDT-1	5 V
	L78M06C					L78M06CDT-TR	L78M06CDT-1 (2)	6 V
	L78M08C		L78M08CV	L78M08CV-DG		L78M08CDT-TR	L78M08CDT-1 (2)	8 V
	L78M09C		L78M09CV	L78M09CV-DG		L78M09CDT-TR	L78M09CDT-1 (2)	9 V
	L78M12C		L78M12CV	L78M12CV-DG		L78M12CDT-TR		12 V
	L78M15C		L78M15CV	L78M15CV-DG		L78M15CDT-TR		15 V
	L78M24C		L78M24CV	L78M24CV-DG	L78M24CP (2)	L78M24CDT-TR	L78M24CDT-1 (2)	24 V

1.TO-220 Dual Gauge frame

2.Available on request

May 2012

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This is information on a product in full production.

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Contents	L78MxxC

Contents

1	Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 3
2	Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 4
3	Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
4	Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
5	Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
6	Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
7	Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	17
8	Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	29

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L78MxxC	Diagram

1 Diagram

Figure 1. Block diagram

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Pin configuration	L78MxxC

2 Pin configuration

Figure 2. Pin connections (top view)

TO-220	TO220FP
DPAK	IPAK

Figure 3. Schematic diagram

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L78MxxC

Maximum ratings

3

Maximum ratings

Table 2.

Absolute maximum ratings

Symbol

Parameter

Value

Unit

VI

DC input voltage

for VO = 5 to 18 V

35

V

for VO = 20, 24 V

40

IO

Output current

Internally limited

mA

PD

Power dissipation

Internally limited

mW

TSTG

Storage temperature range

- 65 to 150

°C

TOP

Operating junction temperature range

0 to 150

°C

Note:

Absolute maximum ratings are those values beyond which damage to the device may occur.

Functional operation under these condition is not implied.

Table 3.

Thermal data

Symbol

Parameter

TO-220

TO-220FP

DPAK

IPAK

Unit

RthJC

Thermal resistance junction-case

5

5

8

°C/W

RthJA

Thermal resistance junction-ambient

50

60

100

°C/W

Figure 4.

Application circuit

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Test circuits	L78MxxC

4 Test circuits

Figure 5. DC parameter

Figure 6. Load regulation

Figure 7. Ripple rejection

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L78MxxC	Electrical characteristics

5 Electrical characteristics

Refer to the test circuits, TJ = 25 °C, VI = 10 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified.

Table 4.	Electrical characteristics of L78M05C
Symbol	Parameter	Test conditions	Min.	Typ.	Max.	Unit
VO	Output voltage		4.8	5	5.2	V
VO	Output voltage	IO = 5 to 350 mA, VI = 7 to 20 V	4.75	5	5.25	V
VO	Line regulation	VI = 7 to 25 V, IO = 200 mA			100	mV
		VI = 8 to 25 V, IO = 200 mA			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				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, TJ = 0 to 125 °C		-0.5		mV/°C
SVR	Supply voltage rejection	VI = 8 to 18 V, f = 120 Hz, IO = 300 mA	62			dB
eN	Output noise voltage	B = 10 Hz to 100 kHz		40		µV
Vd	Dropout voltage			2		V
Isc	Short circuit current	VI = 35 V		300		mA

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Electrical characteristics	L78MxxC

Refer to the test circuits, TJ = 25 °C, VI = 11 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified.

Table 5.	Electrical characteristics of L78M06C
Symbol	Parameter	Test conditions	Min.	Typ.	Max.	Unit
VO	Output voltage		5.75	6	6.25	V
VO	Output voltage	IO = 5 to 350 mA, VI = 8 to 21 V	5.7	6	6.3	V
VO	Line regulation	VI = 8 to 25 V, IO = 200 mA			100	mV
		VI = 9 to 25 V, IO = 200 mA			50
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				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, TJ = 0 to 125 °C		-0.5		mV/°C
SVR	Supply voltage rejection	VI = 9 to 19 V, f = 120 Hz, IO = 300 mA	59			dB
eN	Output noise voltage	B = 10 Hz to 100 kHz		45		µV
Vd	Dropout voltage			2		V
Isc	Short circuit current	VI = 35 V		270		mA

Refer to the test circuits, TJ = 25 °C, VI = 14 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified.

Table 6.	Electrical characteristics of L78M08C
Symbol	Parameter	Test conditions	Min.	Typ.	Max.	Unit
VO	Output voltage		7.7	8	8.3	V
VO	Output voltage	IO = 5 to 350 mA, VI = 10.5 to 23 V	7.6	8	8.4	V
VO	Line regulation	VI = 10.5 to 25 V, IO = 200 mA			100	mV
		VI = 11 to 25 V, IO = 200 mA			50
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				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, TJ = 0 to 125 °C		-0.5		mV/°C
SVR	Supply voltage rejection	VI = 11.5 to 21.5 V, f = 120 Hz,	56			dB
		IO = 300 mA
eN	Output noise voltage	B = 10 Hz to 100 kHz		52		µV
Vd	Dropout voltage			2		V
Isc	Short circuit current	VI = 35 V		250		mA
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L78MxxC	Electrical characteristics

Refer to the test circuits, TJ = 25 °C, VI = 15 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified.

Table 7.	Electrical characteristics of L78M09C
Symbol	Parameter	Test conditions	Min.	Typ.	Max.	Unit
VO	Output voltage		8.65	9	9.35	V
VO	Output voltage	IO = 5 to 350 mA, VI = 11.5 to 24 V	8.55	9	9.45	V
VO	Line regulation	VI = 11.5 to 25 V, IO = 200 mA			100	mV
		VI = 12 to 25 V, IO = 200 mA			50
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				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, TJ = 0 to 125 °C		-0.5		mV/°C
SVR	Supply voltage rejection	VI = 12.5 to 23 V, f = 120 Hz,	56			dB
		IO = 300 mA
eN	Output noise voltage	B = 10 Hz to 100 kHz		58		µV
Vd	Dropout voltage			2		V
Isc	Short circuit current	VI = 35 V		250		mA

Refer to the test circuits, TJ = 25 °C, VI = 19 V, IO = 350 mA, CI = 0.33 µF, CO = 0.1 µF unless otherwise specified.

Table 8.	Electrical characteristics of L78M12C
Symbol	Parameter	Test conditions	Min.	Typ.	Max.	Unit
VO	Output voltage		11.5	12	12.5	V
VO	Output voltage	IO = 5 to 350 mA, VI = 14.5 to 27 V	11.4	12	12.6	V
VO	Line regulation	VI = 14.5 to 30 V, IO = 200 mA			100	mV
		VI = 16 to 30 V, IO = 200 mA			50
VO	Load regulation	IO = 5 to 500 mA, TJ = 25 °C			240	mV
		IO = 5 to 200 mA, TJ = 25 °C			120
Id	Quiescent current				6	mA
Id	Quiescent current change	IO = 5 to 350 mA			0.5	mA
		IO = 200 mA, VI = 14.5 to 30 V			0.8
VO/ T	Output voltage drift	IO = 5 mA, TJ = 0 to 125 °C		-1		mV/°C
SVR	Supply voltage rejection	VI = 15 to 25 V, f = 120 Hz, IO = 300 mA	55			dB
eN	Output noise voltage	B = 10 Hz to 100 kHz		75		µV
Vd	Dropout voltage			2		V
Isc	Short circuit current	VI = 35 V		240		mA
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