LX2202

Microsemi

Integrated Products Division

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

Page 2

Copyright

© 2004

Rev. 1.0a, 2006-02-09

2A Li-Ion Linear Charger and Power Control

TM

®

ABSOLUTE MAXIMUM RATINGS

Analog Input Signals (VIDx, VM, SNS) .............................................-0.3V to 7V

Operating Junction Temperature.................................................................. 150

°C

Storage Temperature Range...........................................................-65

°C to 150°C

USB Maximum DC Current .......................................................................500mA

USB Maximum Surge Current...........................................................................2A

RoHS / Pb-free Peak Package Solder Reflow Temperature

(40 second maximum exposure) ...................................................... 260°C(+0, -5)

Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to

Ground. Currents are positive into, negative out of specified terminal

.

TH ERMAL DATA

THERMAL RESISTANCE

θ

JA

40

°C/W

The

θ

above assume no ambient airflow.

PACKAGE PIN OUT

VDD

VDD

VDD

VDD

USB

CMP

BAT

BAT

BAT

NU

1

6

11

16

2

3

4

5

78

9

10

12

13

14

15

17

18

19

20

Pad Is GND

(Top View)

RoHS / Pb-free 100% Matte Tin Lead Finish

FUNCTIONAL PIN DESCRIPTION

Name

Description

BAT

Charging Output - This pin is wired to the positive terminal of the battery. (The negative battery terminal is wired to GND.)

CCP

Charge Current Programming Pin - A resistor (RCP) is connected between this pin and GND. The constant current is

determined by the following relationship:

CCP

)

MAX

(

BAT

R

73200

I

=

CMP

Compensation Pin – Connect a 0.1µF compensation capacitor from this pin to VDD.

CTP

Charge Termination Programming Pin – A resistor (RTP) is connected between this pin and GND. The termination charge

current is determined by the following relationship:

CTP

)

MIN

(

BAT

R

5250

I

=

CUS

Maximum USB Current Programming Pin – A resistor (RUS) is connected between this pin and GND. The Hi Level charge

current is determined by the following relationship:

USB

)

HIGH

(

USB

R

1211

I

=

GND

Common Ground

NU

This pin is floating and will not affect performance.

PSW

PMOS Switch driver – This output is designed to drive the gate of an external PMOS power switch. The driver is pulled low

VDD

Common Power Node – Connects to system power bus.

VIDx

State Select Input – Applying a two bit TTL compatible signal sets the desired state of the charger corresponding to the Truth

Table.

USB

Voltage Input – Current limited USB input. Apply a USB compliant power input.

VM

Voltage Mode Select - Selects the constant voltage charge level. Wired to USB for 4.1V and GND for 4.2V.

STAT

Status - This pin is a logic high level when the battery is being charged. A low signal indicates either under voltage lockout,