ST LM117, LM217, LM317 User Manual

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LM117/LM217/LM317

1.2 V to 37 V adjustable voltage regulators

Features

■Output voltage range: 1.2 to 37 V

■Output current in excess of 1.5 A

■0.1% Line and load regulation

■Floating operation for high voltages

■Complete series of protections: current limiting, thermal shutdown and SOA control

Description

The LM117/LM217/LM317 are monolithic integrated circuit in TO-220, TO-220FP, TO-3 and D2PAK packages intended for use as positive adjustable voltage regulators.

They are designed to supply more than 1.5 A of load current with an output voltage adjustable over a 1.2 to 37 V range.

The nominal output voltage is selected by means of only a resistive divider, making the device exceptionally easy to use and eliminating the stocking of many fixed regulators.

TO-220

TO-220FP

D2PAK

TO-3

Table 1.	Device summary
		Order codes
	TO-220	D2PAK (tape and reel)		TO-220FP	TO-3
					LM117K
	LM217T	LM217D2T-TR			LM217K
	LM317T	LM317D2T-TR		LM317P	LM317K
February 2008		Rev 14			1/25

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Contents	LM117/LM217/LM317

Contents

1	Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 3
2	Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
3	Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
4	Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
5	Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
6	Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
7	Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
8	Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	24

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LM117/LM217/LM317	Pin configuration

1 Pin configuration

Figure 1. Pin connections (top view)

TO-220	TO-220FP
D2PAK (Any Type)	TO-3

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Maximum ratings						LM117/LM217/LM317
2		Maximum ratings
Table 2.		Absolute maximum ratings
Symbol		Parameter				Value				Unit
VI - VO		Input-reference differential voltage				40				V
IO		Output current				Internally limited
			LM117			-55 to 150
TOP
		Operating junction temperature for:	LM217			-25 to 150				°C
			LM317			0 to 125
PD		Power dissipation				Internally limited
TSTG		Storage temperature				-65 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	D2PAK	TO-220		TO-220FP		TO-3		Unit
RthJC	Thermal resistance junction-case		3	3		5		4		°C/W
RthJA	Thermal resistance junction-ambient		62.5	50		60		35		°C/W

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LM117/LM217/LM317	Diagram

3 Diagram

Figure 2. Schematic diagram

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Electrical characteristics	LM117/LM217/LM317

4 Electrical characteristics

Table 4. Electrical characteristics for LM117/LM217 (VI - VO = 5 V, IO = 500 mA, IMAX = 1.5 A and PMAX = 20 W, TJ = -55 to 150°C for LM117, TJ = -25 to 150 °C for LM217, unless otherwise specified)

Symbol	Parameter	Test conditions		Min.	Typ.	Max.	Unit
VO	Line regulation	VI - VO = 3 to 40 V	TJ = 25°C		0.01	0.02	%/V
					0.02	0.05
		VO ≤5 V	TJ = 25°C		5	15	mV
VO	Load regulation	IO = 10 mA to IMAX			20	50
		VO ≥5 V,	TJ = 25°C		0.1	0.3	%
		IO = 10 mA to IMAX			0.3	1
IADJ	Adjustment pin current				50	100	µA
IADJ	Adjustment pin current	VI - VO = 2.5 to 40V IO = 10 mA to IMAX			0.2	5	µA
VREF	Reference voltage	VI - VO = 2.5 to 40V IO= 10 mA to IMAX		1.2	1.25	1.3	V
	(between pin 3 and pin 1)	PD ≤PMAX
VO/VO	Output voltage				1		%
	temperature stability
IO(min)	Minimum load current	VI - VO = 40 V			3.5	5	mA
IO(max)	Maximum load current	VI - VO ≤15 V, PD < PMAX		1.5	2.2		A
		VI - VO = 40 V, PD < PMAX, TJ = 25°C			0.4
eN	Output noise voltage	B = 10Hz to 100kHz, TJ = 25°C			0.003		%
	(percentage of VO)
SVR	Supply voltage rejection (1)	TJ = 25°C, f = 120Hz	CADJ=0		65		dB
			CADJ=10µF	66	80

1. CADJ is connected between pin 1 and ground.

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LM117/LM217/LM317				Electrical characteristics
Table 5.	Electrical characteristics for LM317 (VI - VO = 5 V, IO = 500 mA, IMAX = 1.5 A and
	PMAX = 20 W, TJ = 0 to 125°C, unless otherwise specified)
Symbol	Parameter	Test conditions		Min.	Typ.	Max.	Unit
VO	Line regulation	VI - VO = 3 to 40 V	TJ = 25°C		0.01	0.04	%/V
					0.02	0.07
		VO ≤5 V	TJ = 25°C		5	25	mV
VO	Load regulation	IO = 10 mA to IMAX			20	70
		VO ≥5 V,	TJ = 25°C		0.1	0.5	%
		IO = 10 mA to IMAX			0.3	1.5
IADJ	Adjustment pin current				50	100	µA
IADJ	Adjustment pin current	VI - VO = 2.5 to 40V,			0.2	5	µA
		IO = 10 mA to 500mA
VREF	Reference voltage	VI - VO = 2.5 to 40V IO = 10 mA to 500mA		1.2	1.25	1.3	V
	(between pin 3 and pin 1)	PD ≤PMAX
VO/VO	Output voltage				1		%
	temperature stability
IO(min)	Minimum load current	VI - VO = 40 V			3.5	10	mA
IO(max)	Maximum load current	VI - VO ≤15 V, PD < PMAX		1.5	2.2		A
		VI - VO = 40 V, PD < PMAX, TJ = 25°C			0.4
eN	Output noise voltage	B = 10Hz to 100kHz, TJ = 25°C			0.003		%
	(percentage of VO)
SVR	Supply voltage rejection (1)	TJ = 25°C, f = 120Hz	CADJ=0		65		dB
			CADJ=10µF	66	80

1. CADJ is connected between pin 1 and ground.

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Typical characteristics	LM117/LM217/LM317

5 Typical characteristics

Figure 3. Output current vs input-output	Figure 4. Dropout voltage vs junction
differential voltage	temperature

Figure 5. Reference voltage vs junction

Figure 6. Basic adjustable regulator

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