LX2202CLQ-TR MICROSEMI [Microsemi Corporation], LX2202CLQ-TR Datasheet

LX2202CLQ-TR

Manufacturer Part Number

LX2202CLQ-TR

Description

TM 2A Li-Ion Linear Charger and Power Control

Manufacturer

MICROSEMI [Microsemi Corporation]

Datasheet

1.LX2202CLQ-TR.pdf (12 pages)

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Rev. 1.0a, 2006-02-09

multi-state (2 stage) Li-Ion battery charger

(Constant current / Constant voltage) that is

designed to minimize battery charge time

(even from current limited sources such as

USB) and provide a simplified interface to

control battery discharge.

current from an AC adapter and an isolated

battery topology to minimize charge time

from current limited sources such as USB.

A thermal control loop maintains a safe

operating temperature at all times.

complete battery interface. When the input

power source is removed, the LX2202

provides the discharge path for the battery

with extremely low discharge impedance.

This eliminates the need for external

discharge switch and voltage supervisors.

three levels of current limit: 100mA,

500mA, and off.

IMPORTANT: For the most current data, consult MICROSEMI’s website:

Patent Pending

Power On/Off

Wall Adapter

The LX2202 Linear Battery Charger is a

LX2202 features up to 2A charging

The LX2202 provides a seamless

In USB mode, the LX2202 provides

Main Internal

Power Bus

B220

10µF

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

-40 to 125

P A C K A G E O R D E R I N F O

VDD

USB

2.55k

LX2202

(°C)

D E S C R I P T I O N

105k

72.3k

Indicator

CMP

Charge

BAT

0.1µF

To VDD

RoHS Compliant / Pb-free

2.49k

has improved charge and discharge mode

detection circuitry. A UVLO feature prevents

battery charging when VDD is less than 3.6V.

program the constant charge current level, for

setting the termination charge current, and for

varying the USB charge current limits.

LX2202 support two types of Li-Ion

battery chemistry; 4.1V and 4.2V through

logical input (VM pin). The LX2202

provides a charging status indicator.

conditioning mode for batteries that have

been deeply discharged and also has a top off

charge mode for batteries that are left on the

charger for extended periods.

4mm x 4mm, 20-pin MLP, surface mount

package.

10µF

The LX2202 (compared to the LX2201)

The LX2202 uses three resistors to

The LX2202 features a pre-charge

The LX2202 is available in a high power

LX2202CLQ

P R O D U C T H I G H L I G H T

4x4mm 20-Pin

Plastic MLP

Integrated Products Division

VID0

Microsemi

http://www.microsemi.com

VID1

2A Li-Ion Linear Charger and Power Control

Switch open – charging

Charging – USB high level if

Charging – USB low level if

Charging – USB high level if

disabled.

using USB

Append the letters “TR” to the part number.

State Select Truth Table

VDD > V

Note: Available in Tape & Reel.

(i.e. LX2202CLQ-TR)

RODUCTION

BAT

Up to 2A Charge Current

Internal Pass Element Can

Function as a Reverse Direction

Load Switch

USB Compliant Charging States

using optional USB input

Isolated Battery Topology

Low Rds

Full Capacity Charging

True Charge Indicator

Wall Supply Regulator Tolerance

5V + 10%

Topping Charge with Voltage

Monitoring Mode

Improved charge/discharge mode

detection circuitry

Small, High Power 20-lead MLP

package

Selectable Li-Ion Battery for 4.1V

or 4.2V Applications

Batteries up to 4AH Ratings (C/2)

Cell Phones

PDAs

Charging Cradles

Digital Cameras

Low Cost Single Li-Ion Cell Chargers

Switch open – discharge

Battery Discharging. MOSFET

ATA

K E Y F E A T U R E S

disabled.

fully enhanced with current

flow V

fully enhanced with current

flow V

A P P L I C A T I O N S

BAT

HEET

in Discharge Mode

BAT

to VDD.

> VDD

LX2202

Page 1

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LX2202CLQ-TR Summary of contents

Page 1

... Low Cost Single Li-Ion Cell Chargers V > VDD BAT BAT Switch open – discharge disabled. Switch open – discharge disabled. . Battery Discharging. MOSFET fully enhanced with current . flow V to VDD. BAT Battery Discharging. MOSFET fully enhanced with current . flow V to VDD. BAT (i.e. LX2202CLQ-TR) Page 1 ...

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Supply Voltage ( ..........................................................-0. USB DD Analog Input Signals (VIDx, VM, SNS) ...

Page 3

TM Unless otherwise specified, the following specifications apply over the ambient temperature 0°C noted and the following test conditions: VDD = 5.0V GND, VID0 = VID1 = VBAT, RCCP = 72.3k, RCTP = 105k, RUSB = 2.55k. Parameter ...

Page 4

TM VID0 VDD USB CUS VID1 VM CMP CCP GND Copyright © 2004 Rev. 1.0a, 2006-02-09 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 2A Li-Ion Linear Charger and Power Control ® P RODUCTION ...

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TM LX 2202 > ...

Page 6

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TM CHARGING CURRENT ACCURACY OVER 101.5 101 100.5 100 99.5 99 98.5 98 -55 -35 -15 5 Ambient Temperature (°C) CONSTANT CURRENT PROGRAMMING 2500 2000 1500 1000 500 0 0.00 5.00 10.00 15.00 20.00 CCP Current ...

Page 8

( ...

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ENERAL ESCRIPTION The LX2202 is designed to charge a single cell Lithium Ion battery using two steps: a constant current step followed by a constant voltage step. The basic charger function uses the VDD pins as an ...

Page 10

TM R USB C T EDUCED HARGE IME The LX2202 has an isolated battery topology which reduces charge time from USB when the appliance is turned on while also charging. Because the system power rail can be a higher voltage ...

Page 11

TM LQ 20-Pin MLPQ Plastic 4x4mm (114x114DAP Copyright © 2004 Rev. 1.0a, 2006-02-09 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 2A Li-Ion Linear Charger and Power Control ® P RODUCTION ...

Page 12

TM PRODUCTION DATA – Information contained in this document is proprietary to Microsemi and is current as of publication date. This document may not be modified in any way without the express written consent of Microsemi. Product processing does not ...

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