CYStech Electronics Corp.

Spec. No. : C513F3

Issued Date : 2003.05.24

Revised Date :

. .

Page No. : 1/9

PL317F3

CYStek Product Specification

Three Terminal Adjustable Output

Positive Voltage Regulators

PL317F3

The PL317F3 is an adjustable 3–terminal positive voltage regulator capable

of supplying in excess of 1.5 A over an output voltage range of 1.2 V to 37 V.

This voltage regulator is exceptionally easy to use and requires only two ex-

ternal resistors to set the output voltage. Further, it employs internal current

limiting, thermal shutdown and safe area compensation, making it essentially

blow–out proof.

The PL317F3 serves a wide variety of applications including local, on-card

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

lator, or by connecting a fixed resistor between the adjustment and output, the

PL317F3 can be used as a precision current regulator.

● Output Current in Excess of 1.5 A

● Output Adjustable between 1.2 V and 37 V

● Internal Thermal Overload Protection

● Internal Short Circuit Current Limiting Constant with Temperature

● Output Transistor Safe–Area Compensation

● Floating Operation for High Voltage Applications

● Eliminates Stocking many Fixed Voltages

Standard Application

+

+

PL317

R1

R2

Cout

Cin

Vin

Vout

Maximum Ratings

Rating

Symbol

Value

Unit

Input-Output Voltage Differential

40

V

Power Dissipation

Thermal Resistance, Junction-to-Ambient

Thermal Resistance, Junction-to-Case

Internally Limited

60

3.0

W

℃

/W

℃

/W

Operating Junction Temperature Range

-40 to +125

℃

Storage Temperature Range

Tstg

-65 to +150

℃

TO-263

1.0µF

0.1µF

＊

Cin is required if regulator is located an appreciate

distance from power supply filter.

＊＊

Cout is not needed for stability, however, it does

improve transient response.

Since

error associated with this term is negligible in

most applications.