LM317L - Fairchild Semiconductor

www.fairchildsemi.com

Rev. 1.0.1

Features

• Output current in excess of 100mA

• Outp ut ad just ab l e betwe en 1. 2V an d 37V

• Internal thermal-overload protection

• Internal short-circuit current- limitin g

• Output transistor safe-area co mpensation

• Floating operation for h igh -voltage applications

Description

The LM317L is a 3-terminal adjustable positive v oltage reg-

ulator capabl e of su pplyi ng in exce ss of 100mA over an out-

put voltage range of 1 .2V to 37V. This voltage regulator is

exceptionally easy to use and requires only two external

resistors to set the output voltage.

TO-92

1. Adj 2. Output 3. Input

8-SOP

Internal Block Diagram

Rlimit

3Vin

Voltage

Reference

Vad

Protection

Circuitry

Input

Output

LM317L

3-terminal 0.1A positive adjustab le re gulator

LM317L

Absolute Maximum Ratings

Electrical Characteristics

(VI - VO = 5V, IO = 40mA, 0°C ≤ TJ ≤ +125 °C, PDMAX = 625mW, unless otherwise specified)

• Load and Line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken

into account separately. Pulse testing with low duty cycle is used.

Parameter Symbol Value Unit

Input-Output Voltage Differential VI - VO40 V

Power Dissipation PDInternally limited W

Operating Junction Temperature Range Tj0 ~ +125 °C

Storage Temperature Range TSTG -65 ~+125 °C

Parameter Symbol Conditions Min. Typ. Max. Unit

*Line Regulation Rline TA = +25°C

3V ≤ VI − VO ≤ 40V - 0.01 0.04 %/V

3V ≤ VI − VO ≤ 40V - 0.02 0.07

*Load Regulation Rloal

TA = +25°C

10mA ≤ IO ≤100mA

VO ≤ 5V

VO ≥5V

-5

0.1 25

0.5 mV

%/ VO

10mA ≤ IO ≤ 100mA

VO ≤ 5V

VO ≥ 5V -20

0.3 70

1.5 mV

%/ VO

Adjustment Pin Current IADJ -- 50 100 µA

Adjustment Pin Current

Change ∆IADJ

3V ≤ VI - VO ≤ 40V

10mA ≤ IO ≤ 100mA

PD < PDMAX -0.2 5 µA

Reference Voltage VREF

3V < VI - VO <40V

10mA ≤ IO ≤100mA

PD ≤ PDMAX 1.20 1.25 1.30 V

Temperature Stability STT--0.7- %

Minimum Load Current to

Maintain Regulation IL(MIN) VI - VO = 40V - 3.5 10 mA

Maximum output Current IO(MAX)

VI - VO ≤ 15V

PD < PDMAX 100 200 - mA

VI - VO ≤ 40V

PD < PDMAX, TA = +25°C25 50 -

RMS Noise, % of VOUT eNTA =+ 25°C

10Hz < f <10KHz - 0.003 - %/ VO

Ripple Rejection RR

VO = 10V, f = 120Hz

without CADJ

CADJ = 10uF 66 65

80 -dB

Long-Term Stability ST TJ = +125 °C, 1000 Hours - 0.3 - %

LM317L

Typical Application

Figu re 1. 5V Electronic Shutdown Reg ula to r

D1 protects the device during an input short circuit.

Figu re 2. Slow Tu rn-On Regula to r

Figure 3. Current Regulator

LM317L

Input

Output

LM317L

Input Output

LM317L

Input

Output

LM317L

Mechanical Dimensions

Package

Mechanical Dimensions (Continued)

Package

0.46

±0.10

1.27TYP

(R2.29)

3.86MAX

[1.27

±0.20

]1.27TYP

[1.27

±0.20

]

3.60

±0.20

14.47

±0.40

1.02

±0.10

(0.25) 4.58

±0.20

4.58

+0.25

–0.15

0.38

+0.10

–0.05

0.38

+0.10

–0.05

TO-92

LM317L

8-SOP

4.92

±0.20

0.194

±0.008

0.41

±0.10

0.016

±0.004

1.27

0.050

5.72

0.225

1.55

±0.20

0.061

±0.008

0.1~0.25

0.004~0.001

6.00

±0.30

0.236

±0.012

3.95

±0.20

0.156

±0.008

0.50

±0.20

0.020

±0.008

5.13

0.202 MAX

#4 #5

0~8°

0.56

0.022

()

1.80

0.071

MAX0.10

MAX0.004

MAX

MIN

0.10

-0.05

0.15+

0.004

-0.002

0.006

LM317L

Ordering Information

Product Number Package Operating Temperature

LM317LZ TO-92 0°C to + 125°C

LM317LM 8-SOP

LM317L

3/6/01 0.0m 001

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