ST LM117, LM217, LM317 User Manual

现货库存、技术资料、百科信息、热点资讯，精彩尽在鼎好!

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

2

D

PAK 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.

LM117/LM217/LM317

TO-220

2

D

PAK

TO-220FP

TO-3

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.

Table 1. Device summary

Order codes

TO-220 D

LM217T LM217D2T-TR LM217K

LM317T LM317D2T-TR LM317P LM317K

2

PAK (tape and reel) TO-220FP TO-3

LM117K

February 2008 Rev 14 1/25

www.st.com

25

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

2/25

LM117/LM217/LM317 Pin configuration

1 Pin configuration

Figure 1. Pin connections (top view)

TO-220

D2PAK (Any Type)

TO-220FP

TO-3

3/25

Maximum ratings LM117/LM217/LM317

2 Maximum ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit

V

- VOInput-reference differential voltage 40

I

I

T

OP

Output current Internally limited

O

LM117 -55 to 150

Operating junction temperature for:

LM317 0 to 125

V

°CLM217 -25 to 150

T

P

STG

Power dissipation Internally limited

D

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

R

R

Thermal resistance junction-case 3 3 5 4 °C/W

thJC

Thermal resistance junction-ambient 62.5 50 60 35 °C/W

thJA

4/25

LM117/LM217/LM317 Diagram

3 Diagram

Figure 2. Schematic diagram

5/25

Electrical characteristics LM117/LM217/LM317

4 Electrical characteristics

Table 4. Electrical characteristics for LM117/LM217 (VI - VO = 5 V, IO = 500 mA, I

= 20 W, TJ = -55 to 150°C for LM117, TJ = -25 to 150 °C for LM217, unless otherwise

P

MAX

= 1.5 A and

MAX

specified)

Symbol Parameter Test conditions Min. Typ. Max. Unit

T

= 25°C 0.01 0.02

ΔV

ΔV

I

ΔI

V

ΔV

I

O(min)

I

O(max)

Line regulation VI - VO = 3 to 40 V

O

Load regulation

O

Adjustment pin current 50 100 µA

ADJ

Adjustment pin current VI - VO = 2.5 to 40V IO = 10 mA to I

ADJ

Reference voltage

REF

(between pin 3 and pin 1)

Output voltage

O/VO

temperature stability

Minimum load current VI - VO = 40 V 3.5 5 mA

Maximum load current

Output noise voltage

eN

(percentage of V

O

SVR Supply voltage rejection

1. C

is connected between pin 1 and ground.

ADJ

VO ≤5 V
IO = 10 mA to I

≥5 V,

V

O

= 10 mA to I

I

O

MAX

MAX

VI - VO = 2.5 to 40V IO= 10 mA to I
PD ≤ P

MAX

VI - VO ≤ 15 V, PD < P

- VO = 40 V, PD < P

V

I

)

B = 10Hz to 100kHz, T

(1)

TJ = 25°C, f = 120Hz

MAX

MAX

J

0.02 0.05

TJ = 25°C 5 15

20 50

TJ = 25°C 0.1 0.3

0.3 1

0.2 5 µA

MAX

MAX

1.2 1.25 1.3 V

1%

1.5 2.2

, TJ = 25°C 0.4

= 25°C 0.003 %

J

C

=0 65

ADJ

=10µF 66 80

C

ADJ

%/V

mV

%

A

dB

6/25

LM117/LM217/LM317 Electrical characteristics

Table 5. Electrical characteristics for LM317 (VI - VO = 5 V, IO = 500 mA, I

= 20 W, TJ = 0 to 125°C, unless otherwise specified)

P

MAX

= 1.5 A and

MAX

Symbol Parameter Test conditions Min. Typ. Max. Unit

T

= 25°C 0.01 0.04

ΔV

ΔV

I

ΔI

V

ΔV

I

O(min)

I

O(max)

Line regulation VI - VO = 3 to 40 V

O

Load regulation

O

Adjustment pin current 50 100 µA

ADJ

Adjustment pin current

ADJ

Reference voltage

REF

(between pin 3 and pin 1)

Output voltage

O/VO

temperature stability

Minimum load current VI - VO = 40 V 3.5 10 mA

Maximum load current

Output noise voltage

eN

(percentage of V

O

SVR Supply voltage rejection

1. C

is connected between pin 1 and ground.

ADJ

VO ≤ 5 V
IO = 10 mA to I

≥5 V,

V

O

= 10 mA to I

I

O

- VO = 2.5 to 40V,

V

I

= 10 mA to 500mA

I

O

MAX

MAX

VI - VO = 2.5 to 40V IO = 10 mA to 500mA
PD ≤ P

MAX

VI - VO ≤ 15 V, PD < P

- VO = 40 V, PD < P

V

I

)

B = 10Hz to 100kHz, T

(1)

TJ = 25°C, f = 120Hz

MAX

MAX

J

0.02 0.07

TJ = 25°C 5 25

20 70

TJ = 25°C 0.1 0.5

0.3 1.5

0.2 5 µA

1.21.251.3 V

1%

1.5 2.2

, TJ = 25°C 0.4

= 25°C 0.003 %

J

C

=0 65

ADJ

=10µF 66 80

C

ADJ

%/V

mV

%

A

dB

7/25

Typical characteristics LM117/LM217/LM317

5 Typical characteristics

Figure 3. Output current vs input-output

Figure 5. Reference voltage vs junction

differential voltage

Figure 4. Dropout voltage vs junction

temperature

Figure 6. Basic adjustable regulator

8/25