Motorola LM317LZRP, LM317LZRA, LM317LBZRA, LM317LBZ, LM317LBDR2 Datasheet

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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

LM317L

out

LOW CURRENT

THREE–TERMINAL

ADJUSTABLE POSITIVE

VOLTAGE REGULATOR

SEMICONDUCTOR

TECHNICAL DATA

Z SUFFIX

PLASTIC PACKAGE

CASE 29

Pin 1. Adjust

2. V

out

3. V

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SOP–8*)

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

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

age. Pins 2, 3, 6 and 7 are electrically common to the die attach flag. This internal lead frame

to the die attach flag. This internal lead frame modification decreases package thermal resis-

modification decreases package thermal resistance and increases power dissipation capabili-

tance and increases power dissipation capability when appropriately mounted on a printed cir-

ty when appropriately mounted on a printed circuit board. SOP–8 conforms to all external di-

cuit board. SOP–8 conforms to all external dimensions of the standard SO–8 package.

mensions of the standard SO–8 package.

Pin 1. V

2. V

3. V

4. Adjust

5. N.C.

6. V

7. V

8. N.C.

in out

out out

out

out out

out

Adj

Cin*

0.1

* Cin is required if regulator is located an appreciable

** distance from power supply filter.

** CO is not needed for stability, however,

** it does improve transient response.

1.25 Vǒ1

out

Since I

is controlled to less than 100

Adj

associated with this term is negligible in most applications.

Adjust

)

2 1

MOTOROLA ANALOG IC DEVICE DATA

)

AdjR2

240

A, the error

CO**

1.0

ORDERING INFORMATION

Operating

Temperature Range

Device Package

LM317LD

LM317LD LM317LZ

LM317LZ LM317LBD SOP–8

LM317LBD SOP–8 LM317LBZ

LM317LBZ

 Motorola, Inc. 1996 Rev 1

Temperature Range

TJ = 0° to +125°C

TJ = –40° to +125°C

SOP–8

Plastic

MAXIMUM RATINGS

Rating Symbol Value Unit

Input–Output V oltage Differential VI–V Power Dissipation P Operating Junction Temperature Range T Storage Temperature Range T

stg

LM317L

40 Vdc

Internally Limited W

–40 to +125 °C –65 to +150 °C

ELECTRICAL CHARACTERISTICS (V

= 5.0 V; IO = 40 mA; TJ = T

I–VO

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)

TA = 25°C, 3.0 V ≤ VI – VO ≤ 40 V

Load Regulation (Note 3), TA = 25°C

10 mA ≤ IO ≤ I

VO ≤ 5.0 V

max

– LM317L

VO ≥ 5.0 V Adjustment Pin Current 3 I Adjustment Pin Current Change

2.5 V ≤ VI – VO ≤ 40 V, PD ≤ P 10 mA ≤ IO ≤ I

max

– LM317L

max

Reference Voltage

3.0 V ≤ VI – VO ≤ 40 V, PD ≤ P 10 mA ≤ IO ≤ I

max

– LM317L

max

Line Regulation (Note 3)

3.0 V ≤ VI – VO ≤ 40 V

Load Regulation (Note 3)

10 mA ≤ IO ≤ I

VO ≤ 5.0 V

max

– LM317L

VO ≥ 5.0 V

Temperature Stability (T

low

≤ TJ ≤ T

) 3 T

high

Minimum Load Current to Maintain Regulation (VI – VO = 40 V) 3 I Maximum Output Current

VI – VO ≤ 6.25 V, PD ≤ P VI – VO ≤ 40 V, PD ≤ P

RMS Noise, % of V

TA = 25°C, 10 Hz ≤ f ≤ 10 kHz

, Z Package

max

, TA = 25°C, Z Package

max

Ripple Rejection (Note 4)

VO = 1.2 V, f = 120 Hz C

= 10 µF, VO = 10.0 V

Adj

Long Term Stability, TJ = T

TA = 25°C for Endpoint Measurements

high

(Note 5)

Thermal Resistance, Junction–to–Case

Z Package

Thermal Resistance, Junction–to–Air

Z Package

NOTES: 1. T

to T

low

2.I

max

3.Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.

4.C

Adj

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.

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

high

= 100 mA P

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

= 625 mW

max

1 Reg

2 Reg

1, 2 ∆I

3 V

1 Reg

2 Reg

3 I

line

load

Adj

ref

line

load

Lmin

max

– 0.01 0.04 %/V

– –

5.0

0.1 – 50 100 µA – 0.2 5.0 µA

1.20 1.25 1.30 V

– 0.02 0.07 %/V

– –

0.3 – 0.7 – % V – 3.5 10 mA

100

–

200

N – 0.003 – % V

4 RR

–

80 80

3 S – 0.3 1.0 %/1.0 k

θJC

θJA

– 83 – °C/W

– 160 – °C/W

0.5mV% V

1.5mV% V

mA – –

dB – –

Hrs.

O O

MOTOROLA ANALOG IC DEVICE DATA

LM317L

Representative Schematic Diagram

300 300 300 3.0k 30

350

6.8V

18k

200

6.3V

8.67k

130

5.1k

180 180

Figure 1. Line Regulation and ∆I

VILV

2.0k 6.0k

LM317L

10 pF

/Line T est Circuit

Adj

Line Regulation (%/V) =

out

2.4k

12.8k

VOH – V

x 100

500

5 0

2.560

out

Adjust

0.1µF

* Pulse Testing Required:

1% Duty Cycle is suggested.

MOTOROLA ANALOG IC DEVICE DATA

Adj

Adjust

R2 1 %

240

LM317L

Vin*V

* Pulse Testing Required:

1% Duty Cycle is suggested.

0.1

Figure 2. Load Regulation and ∆I

Load Regulation (mV) = VO (min Load) –VO (max Load)

VO (min Load) – VO (max Load)

240 1%

CO1.0

LM317L

Adjust

Adj

R 1%

Load Regulation (% VO) =

out

Figure 3. Standard T est Circuit

LM317L

out

/Load Test Circuit

Adj

VO (min Load)

X 100

(max Load)

VO (min Load)

VO (max Load)

(min Load)

Pulse Testing Required: 1% Duty Cycle is suggested.

14.30V

4.30V f = 120 Hz

Cin0.1

0.1

Adjust

Adj

SET

R 1%

To Calculate R2: V

= I

out

Assume I

SET R2

SET

240 1%

+ 1.250 V

= 5.25 mA

ref

Figure 4. Ripple Rejection T est Circuit

LM317L

Adjust

out

240

D1 * 1N4002

1µF

= 1.25 V

out

*D1 Discharges C

if Output is Shorted to Ground.

Adj

1.65K

**C

provides an AC ground to the adjust pin.

Adj

MOTOROLA ANALOG IC DEVICE DATA

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