Microsemi LX2206 Manual de usuario

LX2206 EVALUATION BOARD USER GUIDE

Microsemi

Integrated Products

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

Page 1

Rev. 1.1, 2006-11-17

LX2206 DUAL LEVEL BATTERY

CHARGER

TM ®

LX2206 EVALUATION BOARD USER GUIDE

Microsemi

Integrated Products

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

Page 2

Rev. 1.1, 2006-11-17

TABLE OF CONTENTS

Introduction ............................................................................................................................................................ 3

Schematic .............................................................................................................................................................. 4

IC Block Diagram................................................................................................................................................... 5

Evaluation Board Connections............................................................................................................................... 6

Typical Test Hookup .............................................................................................................................................. 7

PCB Layout Recommendations............................................................................................................................. 7

Evaluation Board Layout........................................................................................................................................ 8

Evaluation Board Bill of Materials.......................................................................................................................... 9

LX2206 EVALUATION BOARD USER GUIDE

Microsemi

Integrated Products

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

Page 3

Rev. 1.1, 2006-11-17

INTRODUCTION TO PRODUCT

The LX2206 Evaluation Board is available from Microsemi for evaluating the performance of the LX2206 Battery Charger

integrated circuit. The component sizes used on the evaluation board facilitate easy probing, however, in practice, smaller

component sizes are recommended to minimize the circuit physical size.

KEY FEATURES

Two independent programmable charge currents

0.5% Float voltage tolerance

Charging up to 1A.

Charging from USB port.

USB current compliance

Full battery Indicator

CC/CV w thermal Feedback

Battery temp monitor

Precision charge termination

Power Good Indicator

APPLICATIONS

MP3 player

PDA

PMC

Digital Camera

Charge cradle

PART SPECIFIC INFORMATION

Part Number Product

LX2206ILD Dual Level Lithium Ion Battery Charger

TABLE 1–PART INFORMATION

IC EVALUATION BOARDS

LX2206ILD LX2206 EVAL KIT

TABLE 2–EVALUATION BOARD INFORMATION

LX2206 EVALUATION BOARD USER GUIDE

Microsemi

Integrated Products

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

Page 4

Rev. 1.1, 2006-11-17

SCHEMATIC FOR LX2206 EVALUATION BOARD

PWR

I PGM

Current

Programming

STATUS

Battery

Temperature

Lockout

Sensing

BAT

H/L

HCP TMP

DCOK

STAT

GND

CMP

LCP

2.49k

19.6k 110k

24.9k

121k

0.47u

10uF

GND

1.00k

R5 R4

SHUTDOWN

1.00k

OFF

CHARGING

FULL

POWER

ATTACHED

RT1

R10

Not

Used

NTC

RTN

BAT TEMP

10uF

BAT+

RTN

BATTERY

LX2206

Figure 1 – LX2206 Evaluation Board Schematic

LX2206 EVALUATION BOARD USER GUIDE

Microsemi

Integrated Products

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

Page 5

Rev. 1.1, 2006-11-17

BLOCK DIAGRAM

IN BAT

CHARGE

CONTROL

GND

HIGH

CHARGING

CURRENT

HCP

TEMPERATURE

CONTROL

CONSTANT

VOLTAGE

CONTROL

CHARGE

TERMINATION

CONTROL

ENABLE

UVLO

STAT

LOW

CHARGING

CURRENT

LCP

H/L

DCOK

TMP

COND.

CURRENT

CONDITIONING

THRESHOLD

Figure 2 – Simplified Block Diagram

LX2206 EVALUATION BOARD USER GUIDE

Microsemi

Integrated Products

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

Page 6

Rev. 1.1, 2006-11-17

LX2206 EVAL CONNECTIONS

Connections: The LX2206 Evaluation Board has

one power input and one power output connection.

FUNCTION PIN NAME VOLTAGE

Input Power PWR 5V +/- 0.65V

Input RTN GND 0V

Battery + BAT+ 0V to 4.3V

Battery - RTN 0V

Jumpers: The LX2206 Evaluation Board has two

position jumper blocks. The jumper can be moved to

select either a high logic level or low logic level. It is

also possible to remove the jumper and apply a

voltage directly to the center pin of the jumper block.

Hookup: The following is a demonstration scenario

that can be used to evaluate the LX2206.

1) Apply the single cell Lithium Ion or Lithium

polymer battery to the battery screw terminal

block. Be sure to connect the positive

terminal of the battery to the BAT+ terminal

and the Negative terminal to the RTN

terminal.

2) Apply a +5V power source to the PWR

terminal and the power supply return to the

GND terminal.

3) Move the SHUTDOWN jumper to the ON

position.

4) The POWER ATTACHED and CHARGING

LEDs should be lit when the battery is

charging and the POWER ATTACHED and

FULL LEDs should be lit when the battery is

fully charged.

5) Monitor the charge current into the battery

with a current probe.

6) Verify that the current changes levels

between approximately 92mA and 460mA

when the I PGM jumper is moved between

its two positions.

7) Verify that moving the SHUTDOWN battery

to the OFF position extinguishes the LEDs

and terminates the charge cycle.

8) The thermal lockout can be tested by

removing RT1 and replacing it with a

variable resistor to simulate the resistance of

RT1 under extreme hot and cold conditions.

LX2206 EVALUATION BOARD USER GUIDE

Microsemi

Integrated Products

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

Page 7

Rev. 1.1, 2006-11-17

LX2206 TYPICAL TEST HOOKUP

I PGM

BAT+ RTN

R9 R10

BATTERY

SHUTDOWN

GND

PWR

313

CHARGING

INTEGRATED PRODUCTS

RTN

OFF

LX2206

RT1

FULL

ATTACHED

POWER

BAT TEMP

NTC

STATUS

LX2206 DUAL LEVEL LITHIUM-ION

BATTERY CHARGER EVAL PCB

Single Cell

Lithium Ion

Battery

5V Power

Supply

Figure 3 – LX2206 Typical Test Hookup

PCB LAYOUT RECOMMENDATIONS

It is recommended that C1 and C2 be located within

1cm of the LX2206. The CMP capacitor should be

located close to the IN and CMP pins. Also the high

impedance summing node connecting to the TMP pin

should be kept relatively short to prevent the coupling

of noise into this node. It is important that the LX2206

have a good thermal path to ambient to dissipate

heat. The simplest way to do this is to heatsink the

LX2206 bottom pad directly to the ground plane by

placing 4 or more vias in the ground pad directly

under the LX2206 footprint.

LX2206 EVALUATION BOARD USER GUIDE

Microsemi

Integrated Products

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

Page 8

Rev. 1.1, 2006-11-17

LX2206 PRINTED CIRCUIT BOARD LAYOUT

I PGM

BAT+ RTN

R9 R10

BATTERY

SHUTDOWN

GND

PWR

313

CHARGING

INTEGRATED PRODUCTS

RTN

OFF

LX2206

RT1

FULL

ATTACHED

POWER

BAT TEMP

NTC

STATUS

LX2206 DUAL LEVEL LITHIUM-ION

BATTERY CHARGER EVAL PCB

Figure 4 – LX2206 Evaluation Board Layout

LX2206 EVALUATION BOARD USER GUIDE

Microsemi

Integrated Products

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

Page 9

Rev. 1.1, 2006-11-17

LX2206 EVALUATION BOARD BILL OF MATERIALS

MISCELLANEOUS COMPONENTS

Line

Item Part Description Manufacturer & Part # Case Reference

Designators Qty

1 Microsemi IC – Dual Level Li-Ion Charger MICROSEMI LX2206ILD 3x3 MLP U1 1

2 LED - Amber PANASONIC LNJ414K8YRA 0603 CHARGING 1

3 LED - Red PANASONIC LNJ214K8ARA 0603 FULL 1

4 LED - Green PANASONIC LNJ314G8TRA 0603 POWER ATTACH 1

5 Thermistor – NTC, 100k VISHAY NTHS0402N01N1003J 0402 RT1 1

6 Terminal Block 2 position/ 7mm spacing OST OST/2/7.0 BATTERY 1

7 Header 3 pin 0.100in spacing I PGM, SHUTDN 2

8 Header 2 pin 0.100in spacing BAT TEMP 1

9 Header 1 pin PWR, GND 2

10 Jumper, 2 Pos, 0.100 inch spacing I PGM, SHUTDN 2

11 Printed Circuit Board MICROSEMI SGE#3541 X1 1

CAPACITORS

Line

Item Part Description Part Number Case Reference

Designators Qty

1 Capacitor, X5R, 10uF, 10V, 10% TAIYO YUDEN LMK316BJ106KD-T 1206 C1,2 2

2 Capacitor, X7R, 0.47uF, 16V, 20% TAIYO YUDEN EMK212BJ474KD-T 0805 C3 1

RESISTORS

Line

Item Part Description Part Number Case Reference

Designators Qty

1 Resistor, 1.00K, 1%, 1/10W PANASONIC ERJ-6ENF1001V

0805 R1,2 2

2 Resistor, 2.49K, 1%, 1/10W PANASONIC ERJ-6ENF2491V

0805 R3,6,7 3

3 Resistor, 110K, 1%, 1/10W PANASONIC ERJ-6ENF1103V

0805 R4 1

4 Resistor, 19.6K, 1%, 1/10W PANASONIC ERJ-6ENF1962V

0805 R5 1

5 Resistor, 121K, 1%, 1/10W PANASONIC ERJ-6ENF1213V 0805 R8 1

6 Resistor, 24.9K, 1%, 1/10W PANASONIC ERJ-6ENF2492V

0805 R10 1

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