Pin-Out Information

Standard Application

Cin = Required 1200µF electrolytic

Cout = Required 1200µF electrolytic

L1

= Optional 1µH input choke

PT7600

7 - 11

13 - 19

20 - 25

27

V

IN

GND

1µH

GND

V

OUT

C

OUT

+

C

IN

+

12

26

1

L1

SYNC OUT

LOAD

REMOTE SENSE (+)

REMOTE SENSE (-)

VID1

VID2

VID3

VID4

PROGRAMMING PINS

2

3

4

STBY*

5

6

VID0

For STBY* pin; open = output enabled; ground = output

disabled.

Series

10 AMP PROGRAMMABLE INTEGRATED

SWITCHING REGULATOR

PT7600

Features

1.3V to 3.5V@10A

4.5V to 5.5V

The PT7600 is a new series of high-

performance, 10 Amp Integrated Switching

Regulators (ISRs) housed in a 27-pin SIP pack-

age. The 10A capability allows easy integration of

the latest high-speed, low-voltage µPs and bus

drivers into existing 5V systems.

The output voltage of the PT7600 is easily

programmed with a 5 bit input compatible with

A differential remote sense is also provided which

automatically compensates for any voltage drop

from the ISR to the load.

1200µF of output capacitance are required for

properoperation.

36

Pin Function

1

VID0

2

VID1

3

VID2

4

VID3

5

STBY* - Stand-by

6

VID4

Pin Function

10

11

12

Remote Sense Gnd

13

GND

14

GND

15

GND

16

GND

17

GND

18

GND

Pin Function

19

GND

20

21

22

23

24

25

26

27

Do not connect

Specifications

Characteristics

PT7600 SERIES

(T

Symbols

Conditions

Min

Typ

Max

Units

Output Current

—10

A

—10

A

Input Voltage Range

0.1A

—

5.5

V

Output Voltage Tolerance

—

V

0°C

Line Regulation

4.5V

—

±10

—

mV

Load Regulation

—

±10

—

mV

—

50

—

mV

Transient Response

—

100

—

µSec

—

200

—

mV

Efficiency

η

—

80

—

%

—

78

—

%

—

75

—

%

—

69

—

%

—

65

—

%

Switching Frequency

4.5V

650

700

750

kHz

0.1A

Absolute Maximum

0—

+85

°C

Operating Temperature Range

Recommended Operating

Forced Air Flow = 200 LFM

0

—

+65***

°C

Temperature Range

Storage Temperature

—

-40

—

+125

°C

Mechanical Shock

Per Mil-STD-883D, Method 2002.3

1 msec, Half Sine, mounted to a fixture

—

500

—

G’s

Mechanical Vibration

Per Mil-STD-883D, Method 2007.2,

—10

—

G’s

20-2000 Hz, Soldered in a PC board

Weight

—

Vertical/Horizontal

—

31/41

—

grams

* ISR-will operate down to no load with reduced specifications. Please note that this product is not short-circuit protected.

*** See SOA curves.

Output Capacitors: The PT7600 series requires a minimum output capacitance of 1200µF for proper operation. Do not use Oscon type capacitors.The maximum allowable

output capacitance is 7,500µF. See Capacitor Application Note.

Input Filter: An input filter is optional for most applications. The input inductor must be sized to handle 10ADC with a typical value of 1µH. The input capacitance must be rated for

a minimum of 1.0 Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required.

Application Notes

Mechanical Outline

Product Selector Guide

Revised 5/15/98