Motorola LM317LZRP, LM317LZRA, LM317LBZRA, LM317LBZ, LM317LBDR2 Datasheet



SEMICONDUCTOR

TECHNICAL DATA

LOW CURRENT

THREE–TERMINAL

ADJUSTABLE POSITIVE

VOLTAGE REGULATOR

ORDERING INFORMATION

Order this document by LM317L/D

Z SUFFIX

PLASTIC PACKAGE

CASE 29

Pin 1. Adjust

2. V

out

3. V

in

3

1

2

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SOP–8*)

1

8

Pin 1. V

in

2. V

out

3. V

out

4. Adjust

5. N.C.

6. V

out

7. V

out

8. N.C.

* SOP–8 is an internally modified SO–8 pack-

age. Pins 2, 3, 6 and 7 are electrically common

to the die attach flag. This internal lead frame

modification decreases package thermal resis-

tance and increases power dissipation capabili-

ty when appropriately mounted on a printed cir-

cuit board. SOP–8 conforms to all external di-

mensions of the standard SO–8 package.

Operating

Temperature Range

Device Package

LM317LD

LM317LZ

LM317LBZ

SOP–8

Plastic

Plastic

T

J

= –40° to +125°C

T

J

= 0° to +125°C

LM317LBD SOP–8



SEMICONDUCTOR

TECHNICAL DATA

LOW CURRENT

THREE–TERMINAL

ADJUSTABLE POSITIVE

VOLTAGE REGULATOR

ORDERING INFORMATION

Order this document by LM317L/D

Z SUFFIX

PLASTIC PACKAGE

CASE 29

Pin 1. Adjust

2. V

out

3. V

in

3

1

2

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SOP–8*)

1

8

Pin 1. V

in

2. V

out

3. V

out

4. Adjust

5. N.C.

6. V

out

7. V

out

8. N.C.

* SOP–8 is an internally modified SO–8 pack-

age. Pins 2, 3, 6 and 7 are electrically common

to the die attach flag. This internal lead frame

modification decreases package thermal resis-

tance and increases power dissipation capabili-

ty when appropriately mounted on a printed cir-

cuit board. SOP–8 conforms to all external di-

mensions of the standard SO–8 package.

Operating

Temperature Range

Device Package

LM317LD

LM317LZ

LM317LBZ

SOP–8

Plastic

Plastic

T

J

= –40° to +125°C

T

J

= 0° to +125°C

LM317LBD SOP–8

1

MOTOROLA ANALOG IC DEVICE DATA

 

  



The LM317L is an adjustable 3–terminal positive voltage regulator

capable of supplying in excess of 100 mA over an output voltage range of

1.2 V to 37 V. This voltage regulator is exceptionally easy to use and

requires only two external resistors to set the output voltage. Further, it

employs internal current limiting, thermal shutdown and safe area

compensation, making them essentially blow–out proof.

The LM317L serves a wide variety of applications including local, on card

regulation. This device can also be used to make a programmable output

regulator, or by connecting a fixed resistor between the adjustment and

output, the LM317L can be used as a precision current regulator.

• Output Current in Excess of 100 mA

• Output Adjustable Between 1.2 V and 37 V

• Internal Thermal Overload Protection

• Internal Short Circuit Current Limiting

• Output Transistor Safe–Area Compensation

• Floating Operation for High Voltage Applications

• Standard 3–Lead Transistor Package

• Eliminates Stocking Many Fixed Voltages

Simplified Application

* C

in

is required if regulator is located an appreciable

** distance from power supply filter.

** C

O

is not needed for stability, however,

** it does improve transient response.

Since I

Adj

is controlled to less than 100

µ

A, the error

associated with this term is negligible in most applications.

LM317L

V

in

V

out

R

1

240

R

2

Adjust

I

Adj

C

in

*

0.1

µ

F

+

C

O

**

1.0

µ

F

V

out

+

1.25 V

ǒ

1

)

R

2

R

1

Ǔ

)

I

Adj

R

2

 Motorola, Inc. 1996 Rev 1

LM317L

2

MOTOROLA ANALOG IC DEVICE DATA

MAXIMUM RATINGS

Rating Symbol Value Unit

Input–Output V oltage Differential V

I

–V

O

40 Vdc

Power Dissipation P

D

Internally Limited W

Operating Junction Temperature Range T

J

–40 to +125 °C

Storage Temperature Range T

stg

–65 to +150 °C

ELECTRICAL CHARACTERISTICS (V

I

–V

O

= 5.0 V; I

O

= 40 mA; T

J

= T

low

to T

high

[Note 1]; I

max

and P

max

[Note 2];

unless otherwise noted.)

LM317L, LB

Characteristics Figure Symbol Min Typ Max Unit

Line Regulation (Note 3)

T

A

= 25°C, 3.0 V ≤ V

I

– V

O

≤ 40 V

1 Reg

line

– 0.01 0.04 %/V

Load Regulation (Note 3), T

A

= 25°C

10 mA ≤ I

O

≤ I

max

– LM317L

V

O

≤ 5.0 V

V

O

≥ 5.0 V

2 Reg

load

–

–

5.0

0.1

25

0.5

mV

% V

O

Adjustment Pin Current 3 I

Adj

– 50 100 µA

Adjustment Pin Current Change

2.5 V ≤ V

I

– V

O

≤ 40 V, P

D

≤ P

max

10 mA ≤ I

O

≤ I

max

– LM317L

1, 2 ∆I

Adj

– 0.2 5.0 µA

Reference Voltage

3.0 V ≤ V

I

– V

O

≤ 40 V, P

D

≤ P

max

10 mA ≤ I

O

≤ I

max

– LM317L

3 V

ref

1.20 1.25 1.30 V

Line Regulation (Note 3)

3.0 V ≤ V

I

– V

O

≤ 40 V

1 Reg

line

– 0.02 0.07 %/V

Load Regulation (Note 3)

10 mA ≤ I

O

≤ I

max

– LM317L

V

O

≤ 5.0 V

V

O

≥ 5.0 V

2 Reg

load

–

–

20

0.3

70

1.5

mV

% V

O

Temperature Stability (T

low

≤ T

J

≤ T

high

) 3 T

S

– 0.7 – % V

O

Minimum Load Current to Maintain Regulation (V

I

– V

O

= 40 V) 3 I

Lmin

– 3.5 10 mA

Maximum Output Current

V

I

– V

O

≤ 6.25 V, P

D

≤ P

max

, Z Package

V

I

– V

O

≤ 40 V, P

D

≤ P

max

, T

A

= 25°C, Z Package

3 I

max

100

–

200

20

–

–

mA

RMS Noise, % of V

O

T

A

= 25°C, 10 Hz ≤ f ≤ 10 kHz

N – 0.003 – % V

O

Ripple Rejection (Note 4)

V

O

= 1.2 V, f = 120 Hz

C

Adj

= 10 µF, V

O

= 10.0 V

4 RR

60

–

80

80

–

–

dB

Long Term Stability, T

J

= T

high

(Note 5)

T

A

= 25°C for Endpoint Measurements

3 S – 0.3 1.0 %/1.0 k

Hrs.

Thermal Resistance, Junction–to–Case

Z Package

R

θJC

– 83 – °C/W

Thermal Resistance, Junction–to–Air

Z Package

R

θJA

– 160 – °C/W

NOTES: 1. T

low

to T

high

= 0° to +125°C for LM317L –40° to +125°C for LM317LB

2.I

max

= 100 mA P

max

= 625 mW

3.Load and line regulation are specified at constant junction temperature. Changes in V

O

due to heating effects must be taken into account separately.

Pulse testing with low duty cycle is used.

4.C

Adj

, when used, is connected between the adjustment pin and ground.

5.Since Long–T erm Stability cannot be measured on each device before shipment, this specification is an engineering estimate of average stability

from lot to lot.

LM317L

3

MOTOROLA ANALOG IC DEVICE DATA

Representative Schematic Diagram

18k

6.8V

6.8V

350

300 300 300 3.0k 30

0

70

200

k

2.560

5

0

130

8.67k

500

40

0

2.4k

12.8k

V

out

5.1k

6.3V

2.0k 6.0k

Adjust

V

in

180 180

10

pF

10

pF

* Pulse Testing Required:

1% Duty Cycle is suggested.

Line Regulation (%/V) =

V

OH

– V

OL

x 100

*

V

CC

V

IH

V

IL

V

in

V

out

V

OH

V

OL

R

L

+

1

µ

FC

O

240

1%

R

1

Adjust

R2

1

%

C

in

0.1

µ

F

LM317L

I

Adj

Figure 1. Line Regulation and ∆I

Adj

/Line T est Circuit

V

OL

LM317L

4

MOTOROLA ANALOG IC DEVICE DATA

* Pulse Testing Required:

1% Duty Cycle is suggested.

Load Regulation (mV) = V

O

(min Load) –V

O

(max Load)

Load Regulation (% V

O

) =

V

O

(min Load) – V

O

(max Load)

X

100

V

O

(min Load)

V

O

(max Load)

LM317L

C

in

0.1

µ

F

Adjust

R

2

1%

C

O

1.0

µ

F

+

*

R

L

(max Load)

R

L

(min Load)

V

out

R

1

240

1%

V

in

*V

in

I

Adj

I

L

Figure 2. Load Regulation and ∆I

Adj

/Load Test Circuit

V

O

(min Load)

Pulse Testing Required:

1% Duty Cycle is suggested.

LM317L

V

in

V

out

Adjust

R

1

240

1%

+

1

µ

FC

O

R

L

C

in

R

2

1%

To Calculate R

2

:

V

out

= I

SET

R

2

+ 1.250 V

Assume I

SET

= 5.25 mA

I

L

I

Adj

I

SET

V

ref

V

O

V

I

0.1

µ

F

Figure 3. Standard T est Circuit

LM317L

V

in

V

out

V

out

= 1.25 V

R

L

C

in

0.1

µ

F

Adjust

R

1

240

1%

D

1

*

1N4002

C

O

+

1

µ

F

14.30V

4.30V

R

2

1.65K

1%

**

10

µ

F

+

*D

1

Discharges C

Adj

if Output is Shorted to Ground.

f = 120 Hz

V

O

**C

Adj

provides an AC ground to the adjust pin.

Figure 4. Ripple Rejection T est Circuit