Standard Application

For STBY* pin

open = output enabled

ground = output disabled.

Pin-Out Information

Pin Function

1

OVP Drive

2

Pwr Good

3

VID0

4

VID1

5

VID2

6

VID3

7

VID4

8

STBY*

9

Do not connect

10

11

12

Pin Function

13

Remote Sense Gnd

14

GND

15

GND

16

GND

17

GND

18

GND

19

20

21

22

23

PT6700

The PT6700 is a new series of

high-performance, 13 Amp Integrated

Switching Regulators (ISRs) housed in

a unique, space-saving 23-pin SIP

package. The 13A capability allows

easy integration of the latest high-

speed, low-voltage µPs and bus drivers

into existing 5V systems.

The output voltage of the PT6700

can be programmed easily from 1.3V

to 3.5V with a 5-bit input compatible

The PT6700 includes a differential

remote sense which automatically com-

pensates for any voltage drop from the

ISR to the load. Also provided are

internal short circuit protection,

OVP drive and a power good output

signal. When over-voltage is de-

tected, the PT6700 provides drive for

an external crowbar or other protec-

tion circuitry.

Cin = Required 1000µF electrolytic

Cout= Required 330µF electrolytic

L1 = Optional 1µH input choke

R1 = Required 10k

Ω pull-up when using Pwr Good signal. Pwr good

output is high when the output voltage is within specification.

Specifications

Characteristics

PT6700 SERIES

(T

Symbols

Conditions

Min

Typ

Max

Units

Output Current

—13

A

—13

A

Input Voltage Range

0.1A

4.5

—

5.5

V

Output Voltage Tolerance

—

V

-40°C

Line Regulation

4.5V

—

±10

—

mV

Load Regulation

—

±20

—

mV

—

50

—

mV

Transient Response

—

70

—

µSec

—

100

—

mV

Efficiency

η

—

91

—

%

—

90

—

%

—

89

—

%

—

85

—

%

—

83

—

%

Switching Frequency

4.5V

300

350

400

kHz

0.1A

Absolute Maximum

—

-40

—

+85

°C

Operating Temperature Range

Recommended Operating

Forced Air Flow = 200 LFM

-40

—

+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

—

TBD

—

G’s

Mechanical Vibration

Per Mil-STD-883D, Method 2007.2,

—

TBD

—

G’s

20-2000 Hz, Soldered in a PC board

Weight

—

—

—

26

—

grams

* ISR-will operate down to no load with reduced specifications.

Output Capacitors: The PT6700 series requires a minimum ouput capacitance of 330µF. The maximum allowable output capacitance is 15,000µF.

Input Filter: An input filter is optional for most applications. The input inductor must be sized to handle 12.5ADC with a typical value of 1µH. The input capacitance must

be rated for a minimum of 1.6Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required.

Revised 9/13/99

PT6700

10 - 12

14 - 18

19 - 22

2

V

IN

GND

1µH

GND

V

OUT

C

OUT

+

C

IN

+

13

23

3

L1

PWR GOOD

LOAD

REMOTE SENSE (+)

REMOTE SENSE (-)

VID1

VID2

VID3

VID4

PROGRAMMING PINS

4

5

6

STBY*

8

7

VID0

OVP DRV

1

R1

13 AMP PROGRAMMABLE

INTEGRATED SWITCHING REGULATOR

Series

Patent pending on package assembly

New Space-Saving

Package