2 AMP ADJUSTABLE POSITIVE STEP-DOWN

INTEGRATED SWITCHING REGULATOR

PT6310

The PT6310 series is a High-

Performance 2 Amp, 12-Pin SIP

(Single In-line Package) Integrated

Switching Regulator (ISR) designed to

meet the on-board power conversion

needs of battery powered or other equip-

ment requiring high efficiency and

small size. This high performance ISR

offers a unique combination of features

combining 87% typical efficiency with

open-collector on/off control and ad-

justable output voltage.

Quiescent current in the shutdown

mode is typically less than 100µA.

Standard Application

Ordering Information

PT6310! = +14.6 Volts

PT6311! = +15.5 Volts

PT6312! = +15.0 Volts

PT6313! = +8.0 Volts

Pin-Out Information

Pin

Function

1

Inhibit

(30V max)

5

GND

6

GND

7

GND

8

GND

10

11

12

Case/Pin

Configuration

Vertical Through-Hole

N

Horizontal Through-Hole

A

Horizontal Surface Mount

C

PT6300

2,3,4

5,6,7,8

9,10,11

12

V

IN

COM

COM

V

OUT

C2

+

1

V

INH

Q1

C1

Specifications

Characteristics

PT6310 Series

(T

°C unless noted)

Symbols

Conditions

Min

Typ

Max

Units

Output Current

0.1*

—

2.0

A

Short Circuit Current

—

5.0

—

Apk

Input Voltage Range

0.1

—

38**

V

Output Voltage Tolerance

—

±1.0

±2.0

Line Regulation

—

±0.25

±0.5

Load Regulation

0.1

—

±0.25

±0.5

—

±2

—

Transient Response

50% load change

—

100

200

µSec

—

5.0

—

Efficiency

η

—

87

—

%

Switching Frequency

600

700

800

kHz

PT6312 only

500

550

600

kHz

Shutdown Current

—

100

—

µA

Quiescent Current

—

10

—

mA

Output Voltage

See Application Notes.

Adjustment Range

Absolute Maximum

-40

—

+85

°C

Operating Temperature Range

Recommendated Operating

Free Air Convection, (40-60LFM)

-40

—

+70

Temperature Range

Thermal Resistance

θ

ja

Free Air Convection (40-60LFM)

—

30

—

Storage Temperature

—

-40

—

+125

°C

Mechanical Shock

Per Mil-STD-883D, Method 2002.3, 1 msec,

—

500

—

G’s

Half Sine, mounted to a fixture

Mechanical Vibration

Per Mil-STD-883D, Method 2007.2,

20-2000 Hz,Soldered in a PC board

—

10

—

G’s

Weight

—

—

—

6.5

—

grams

* ISR will operate to no load with reduced specifications.

** Input voltage cannot exceed 30V when the inhibit function is used.

Note: The PT6310 requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.

Pkg Style 200

Series

SLTS076

(Revised 8/17/99)