LP5900TL-2.0EV National Semiconductor, LP5900TL-2.0EV Datasheet

LP5900TL-2.0EV

Manufacturer Part Number

LP5900TL-2.0EV

Description

BOARD EVALUATION LP5900TL-2.0

Manufacturer

National Semiconductor

Datasheets

1.LP5900SD-1.8EV.pdf (12 pages)

2.LP5900TL-1.5EV.pdf (4 pages)

Specifications of LP5900TL-2.0EV

Channels Per Ic

1 - Single

Voltage - Output

Current - Output

150mA

Voltage - Input

2.5 ~ 5.5V

Regulator Type

Positive Fixed

Operating Temperature

-40°C ~ 125°C

Board Type

Fully Populated

Utilized Ic / Part

LP5900

Lead Free Status / RoHS Status

Not applicable / Not applicable

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LP5900 microSMD

Evaluation Board

Information

Introduction

This evaluation board is designed to enable the evaluation of

the LP5900 Voltage Regulator. Each board is assembled and

tested in the factory. This evaluation board has the microS-

MD-4 bump package mounted.

General Description

The LP5900 is a linear regulator capable of suppling 150mA

output current. Designed to meet the requirements of RF/

Analog circuits, the LP5900 provides low device noise, high

PSRR, low quiescent current, and low line transient response.

Using new innovative design techniques the LP5900 offers

class-leading noise performance without a noise bypass ca-

pacitor.

The device has been designed to work with 0.47µF input and

output ceramic capacitors down to 0603 component size.

Schematic Diagram

201649

Evaluation Board Schematic.

National Semiconductor

Application Note 1396

John Bowie

September 2007

Operation

The input voltage, applied between V

at least 1.0V greater than V

minimum operating voltage is 2.5V. Loads can be connected

to V

provided on the board to allow accurate measurements di-

rectly onto the input and output pins of the device, eliminating

any voltage drop on the PCB traces or connecting wires to the

load.

ON/OFF control is provided by a logic signal on the V

A minimun of 1.2V is required at this pin to enable the LDO.

The LDO will be shutdown when the V

less.

In applications were the LP5900 is operated continuously

from the battery then V

ever if ON/OFF control is required the V

driven from a seperate signal to ensure correct operation of

the fast start-up circuit. The device has a 1MΩ internal resistor

from V

Hardware

The schematic and layout of the evaluation board are given

below:

OUT

with reference to GND. V

to GND.

and V

OUT

and no more than 5.5V. The

OUT

can be tied together. How-

and V

20164904

and GND, should be

pin is set to 0.4V or

sense pins are

pin should be

www.national.com

pin.

Related parts for LP5900TL-2.0EV

LP5900TL-2.0EV Summary of contents

Page 1

... The device has been designed to work with 0.47µF input and output ceramic capacitors down to 0603 component size. Schematic Diagram © 2007 National Semiconductor Corporation National Semiconductor Application Note 1396 John Bowie September 2007 ...

Page 2

... PCB Layout Evaluation Board Component and Pin Layout Board Size:- 21mm x 21mm Hardware Designator U1 LP5900TL CIN 0.47µF COUT 0.47µF IN, OUT, IN SENSE, OUT SENSE, ON/OFF, Test Pins GND www.national.com Value Amount 20164910 Footprint Note TLA4CDA 0603 X7R, X5R 0603 X7R, X5R ...

Page 3

Notes 3 www.national.com ...

Page 4

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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