SLTS062B datasheet(1/7 Pages) TI

Part #	SLTS062B

Description	The PT6930 Excalibur series of 8-A dual-output ISRs are designed to power

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Manufacturer	TI [Texas Instruments]

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For technical support and more information, see inside back cover or visit www.ti.com

PT6930 Series

Standard Application

8-A 5V-Input Dual-Output

Integrated Switching Regulator

Ordering Information

PT6931

o = +3.3 Volts

+2.5/1.8 Volts

PT6932

o = +3.3 Volts

+1.5/1.2 Volts

PT6933

o = +3.3 Volts

+1.8/1.2 Volts

C1/C2 =Req’d 330µF electrolytic (See table footnotes)

C3 =Optional 100µF electrolytic

Features

• Dual Outputs:

+3.3V/2.5V

+3.3V/1.5V

+3.3V/1.8V

• Adjustable Output Voltages

• Remote Sense (both outputs)

• Standby Function

• Over-Temperature Protection

• Soft-Start

• Internal Sequencing

• 23-pin Excalibur™ Package

Pin Function

1Vo1 Sense

2

No Connect

3

STBY

4VIN

5VIN

6VIN

7

GND

8

GND

9

GND

10

GND

11

GND

12

Vo1

Function

13

Vo1

14

Vo1

15

Vo1

16

Vo1 Adjust

17

No Connect

18

Vo2

19

Vo2

20

Vo2

21

Vo2

22

Vo2 Sense

23

Vo2 Adjust*

Pin-Out Information

Description

The PT6930 Excalibur™ series of 8-A

dual-output ISRs are designed to power

DSP ICs. Both output voltages are inde-

pendently adjustable with external resistors.

The second output may also be set to an

alternate lower bus voltage with a simple

pin strap. Internal power sequencing of

both outputs, during both power-up and

power-down, meets the requirements of

most DSP chipsets.

PT6930

C

2

+

GND

V

IN

GND

4,5,6

7-11

12-15

18-21

16

C

1

22

C

3

+

23

1

3

STBY

Vo

2 Sense

Vo

1 Sense

Vo

1

Vo

2

PT Series Suffix (PT1234X)

Case/Pin

Configuration

Vertical Through-Hole

N

Horizontal Through-Hole

A

Horizontal Surface Mount

C

(For dimensions and PC board layout, see

Package Styles 1320 and 1330).

SLTS062B

(Revised 7/20/2001)

* Note:Vo1 & Vo2 Adjust can be pin-strapped to an

alternative lower bus voltage. Consult the voltage

adjustment application note for more information.

Specifications

Characteristics

PT6930 SERIES

(T

a= 25°C unless noted)

Symbols

Conditions

Min

Typ

Max

Units

Output Current

Io1, Io2

Ta = +60°C, 200 LFM, pkg N

Vo1 =3.3V

0.1 (1)

—5.5 (2)

Vo2 =2.5V

0

—

2.2 (2)

Vo2 =1.8V

0

—

1.75 (2)

A

Vo2 =1.5V

0

—

1.45 (2)

Vo1 =1.2V

0

—

1.2 (2)

Ta = +25°C, natural convection

Vo1 =3.3V

0.1 (1)

—6.0 (2)

A

Vo2 =2.5V

0

—

2.2 (2)

Vo2 =1.8V

0

—

1.75 (2)

A

Vo2 =1.5V

0

—

1.45 (2)

Vo1 =1.2V

0

—

1.2 (2)

Input Voltage Range

Vin

0.1A

≤ Io ≤ Ityp

4.5

—

5.5

V

Output Voltage Tolerance

∆Vo

Vin = +5V, Io =Ityp, both outputs

Vo-0.1

—

Vo+0.1

V

0°C

≤ Ta ≤ +65°C

Line Regulation

Regline

4.5V

≤ Vin ≤ 5.5V, Io =Ityp

Vo1

—

±7

±17

V

Vo2

—

±7

±13

Load Regulation

Regload

Vin = +5V, 0.1 ≤ Io ≤ Ityp

Vo1

—

±17

±33

mV

Vo2

—

±4

±10

Vo Ripple/Noise

Vn

Vin = +5V, Io =Ityp

Vo1

—50

—

mV

Vo2

—25

—

Transient Response

ttr

Io step between 0.5xItyp and Ityp

—

25

—

µSec

with C2 = 330µF

Vos

Vo over/undershoot

Vo1

—60

—

mV

Vo2

—60

—

Efficiency

η

Vin = +5V, Io =4A total

—

75

—

%

Switching Frequency

ƒo

4.5V

≤ Vin ≤5.5V

475

600

725

kHz

0.1A

≤ Io ≤ Ityp

(Continued)

Not Recommended For New Designs

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