lx2201 Microsemi Corporation, lx2201 Datasheet

lx2201

Manufacturer Part Number

lx2201

Description

Usb Li-ion Battery Charger

Manufacturer

Microsemi Corporation

Datasheet

1.LX2201.pdf (11 pages)

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Bonase Electronics (HK) Co., Limited

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lx2201CLQ

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Download datasheet (226Kb)

Rev. 1.2b, 2005-04-13

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

(Constant current / Constant voltage) that

can supply up to 2A of charging current into

a single cell Li-Ion battery.

mance USB battery charger. The LX2201

features a 2A high charge current, with

automatic power savings using isolated

battery topology, user programmability in

USB charging, and an extended battery life

with low Rds

advantages over competition chargers with

the USB Limit Control circuit and low

Rds

Control circuit allows simultaneous battery

charging while the device is in operation.

The V

the V

a low Rds

transient.

integrated battery charger solution. . It only

requires three external resistors: one for

setting the constant charge current level, one

for setting the termination charge current,

and one for setting V

in thermostat that will throttle back the

charge current to keep the die temperature

from exceeding 150°C; this feature insures

the LX2201 delivers the maximum charge

rate for a given thermal environment.

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

The LX2201 Linear Battery Charger is a

LX2201 is a cost effective , high perfor-

In USB mode, the LX2201 has

The LX2201 is a low cost, highly

AC/DC Adapter

To System

USB POWER

Regulator

USB Lo / Hi

BAT

in discharge mode. The USB limit

charging logic. In discharge mode

to supply load is independent of

provides low loss and heavy

in discharge.

VDD

VIN

. It also has a built

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

LX2201

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

0 to 70

(qC)

D E S C R I P T I O N

CMP

BAT

RoHS Complaint / Pb-free

battery chemistry; 4.1V and 4.2V through

logical input (VM pin).. A high accuracy

current sensing circuit allows batteries to

be fully charged before terminating the

charge cycle.

enhances system battery life by avoiding

premature discharge of Li-Ion battery with

a separate battery terminal voltage from

system load when adaptor charging is used,

i.e. trickle charge.

indicator. The integrated PMOS pass element

features low drop out voltage while providing

an inherent load disconnect with virtually no

drain on the battery when disabled or when

the input power is removed. Additionally a

battery load disconnect switch has been

integrated which provides seamless power

switching when transitioning between charge

and discharge modes.

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.

LX2201 support two types of Li-Ion

The LX2201 provides a charging status

The LX2201 features a pre-charge

The LX2201 is available in a high power

LX2201CLQ

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

Plastic MLP

4x4mm 20-Pin

Integrated Products Division

VID0

Microsemi

http://www.microsemi.com

VID1

The LX2201 design

Switch open – charging

Charging – USB high level if

Charging – USB low level if

Charging – USB high level if

disabled.

using V

Note: Available in Tape & Reel.

Append the letters “TR” to the part number.

(i.e. LX2201CLQ-TR)

State Select Truth Table

VDD > V

USB Li-Ion Battery Charger

IN.

RODUCTION

BAT

S 2A Charge Current

S USB Compliant Charging States

S Low Rds

S Power Saving and Conditional

S Selectable Li-Ion Battery for 4.1V

S Internal Pass Element Can

S No Sense Resistor Required

S Full Capacity Charging

S True Charge Indicator

S Wall Supply Regulator Tolerance

S Built In MOSFET Driver For Easy

S Topping Charge with Voltage

S Inherent Load Disconnect

S Small, High Power 20-lead MLP

S Batteries with 350mAH to 2AH

S Cell Phones

S PDAs

S Charging Cradles

S Digital Cameras

Mode for Deep Discharge

or 4.2V Applications

Function as a Reverse Direction

Load Switch

5V + 10%

AC Adapter/USB Implementation

Monitoring Mode

package

Ratings

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

LX2201

Page 1

Related parts for lx2201

lx2201 Summary of contents

Page 1

... The LX2201 is available in a high power 4mm x 4mm, 20-pin MLP, surface mount package. http://www.microsemi.com ...

... Description 65000 I = RCP BAT(MAX) 7500 I = BAT(MIN) RTP 1211 I = RUS IN(HI)) . BAT > VDD, or VID0 = VID1 = 0. Microsemi Integrated Products Division LX2201 RODUCTION ATA HEET VDD 1 15 VDD 14 2 VDD 3 13 ...

Page 3

... PSW BAT V V > PSW IN BAT PSW R PSW 1000pF – 1V) PSW PSW PSW BAT Microsemi Integrated Products Division LX2201 D S RODUCTION ATA HEET 70qC except where A LX2201 Min Typ Max 4 1.25 1.25 2.6 4.16 4.2 4.24 4.06 4.1 4.14 350 0.85 1 1.15 0.35 2 3.0 4.75 6 ...

Page 4

... CHARGE/ DISCHARGE CONTROL USB LIMIT CONTROL CONSTANT VOLTAGE CONTROL TEMPERATURE CONTROL CONSTANT CURRENT CONTROL Figure 1 – Simplified Block Diagram Microsemi Integrated Products Division LX2201 D S ATA HEET PSW STAT BAT CHARGE TERMINATION CTP CONTROL Page 4 ...

Page 5

... TM LX2201 FLO W D IAG R AM START > YES VID >60 TAN 140 TEM P < < > ...

Page 6

... VDD VIN 150k 2.5k 10uF To System VDD Power Bus VDD LX2201 VDD VDD VIN TO BAT 499k DMMT3906W 2.5k 150k 499k Microsemi Integrated Products Division LX2201 RODUCTION ATA HEET BAT 10uF BAT BAT BAT 0.1uF CMP 75k BAT BAT 10uF BAT BAT 0.1uF ...

Page 7

... Chart 4 – USB Low Current over VIN Voltage Chart 6 – Battery Current & Voltage vs. Time Microsemi Integrated Products Division LX2201 RODUCTION ATA HEET - bient Tem perature (° ...

Page 8

... ERMINATION ODE To increase system battery life and avoid float charging, the LX2201 turns off the pass element once the battery has been fully charged. The charge termination state occurs at the end of constant voltage mode. The charge status changes state when charging is completed. ...

Page 9

... To be compliant with the USB specification, the +5V current must be less than 100mA in the low power mode and less than 500mA in the high power mode. If the LX2201 is configured as shown in Figure possible for the system to consume more than the maximum allowed USB current (in which case the battery charging current will have been fully scaled back) ...

Page 10

... P RODUCTION Dim Microsemi Integrated Products Division LX2201 D S ATA HEET M I ILLIMETERS NCHES MIN MAX MIN MAX 0.80 1.00 0.031 0.039 0.00 0.05 0.000 0.002 0.20 REF 0.008 REF ...

Page 11

... Copyright ¤ 2000 Rev. 1.2b, 2005-04-13 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 USB Li-Ion Battery Charger ® P RODUCTION Microsemi Integrated Products Division LX2201 D S ATA HEET Page 11 ...

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