LX8580

PRODUCT DA T ABOOK 1996/1997

4

Copyright © 1999

Rev. 1.0 11/99

SENSE

1

ADJUST

2

OUTPUT

3

V

CTRL

4

V

PWR

5

This pin is the positive side of the reference voltage for the device. With this pin it is possible to Kelvin-sense the output voltage

at load.

Thispinisthenegativesideofthereferencevoltageforthedevice. Ripplerejectioncanbeimprovedbyaddingasmallbypasscapacitor

from the Adjust pin to ground. The capacitor value should be selected so that C

and R

This is the power output of the device.

This pin is the voltage supply pin for the control circuitry of the device. The current flow into this pin will be about 1% of the output

current. For the device to regulate, the voltage at this pin must be between 1.0V and 1.3V greater than the output voltage.

This is the collector of the power section of the LX8580. The output load current is supplied through this pin. For the device to

regulate,thevoltageatthispinmustbebetween 0.1V and0.8V greaterthan theoutputvoltage(higheroutput currentsrequire higher

voltages between V

Pin

#

Description

FUNCTIONAL PIN DESCRIPTION

BASIC APPLICA TION CIRCUIT

LX8580

LOAD

6000µF

(4X Sanyo 6mV 1500GK

6.3V 1500µF)

5A

Tantalum

33µF 10V

5.0V

Tantalum

100µF

10V

V

2.89 (MAX)

2.67 (MIN)

121

9

1%

147

9

1%

V

PWR

V

CTRL

ADJUST

SYSTEM GROUND

0.25

9

"Electronic Heatsink"

Resistor reduces

thermal load

on LDO heatsink

to 6.9W

OUTPUT

SENSE

4 x 1

9 2W 5%

(Parallel Connected)

*Note

*Note: For improved transient response, add capacitor as shown (typical 15µF).

PRODUCTION DATA - Information contained in this document is proprietary to LinFinity, and is current as of publication date. This document

may not be modified in any way without the express written consent of LinFinity. Product processing does not necessarily include testing of all

parameters. Linfinity reserves the right to change the configuration and performance of the product and to discontinue product at any time.