MPS EV2605DQ-00B Manuel utilisateur

EV2605DQ-00B

Single-Cell 1A Linear Li-Ion

Battery Charger Evaluation Board

EV2605DQ-00B Rev. 1.0 www.MonolithicPower.com 1

3/9/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

The Future of Analog IC Technology

DESCRIPTION

The EV2605DQ-00B is an evaluation board for

the MP2605, a linear, high-performance single

cell Li-Ion battery charger.

By integrating high voltage input protection into

the charger IC, the MP2605 can tolerate an

input surge up to 28V.

The MP2605 features constant current (CC)

and constant voltage (CV) charging modes with

programmable charge currents (200mA to 1A),

Time out control battery full terminated control,

thermal protection, battery temperature

monitoring, reverse current blocking and trickle

charge. The device also provides AC adapter

power good and charge status indications to the

system.

ELECTRICAL SPECIFICATION

Parameter Symbol Value Units

Input Voltage VIN 5 V

Charge Current ICHG 0.8 A

FEATURES

•Input Surge up to 28V

•Adapter or USB Input

•Programmable Charge Current: 200mA to 1A

•Proprietary Over-Voltage Protection

•0.75% VBATT Accuracy

•Battery Temperature Monitoring

•AC Adapter Power Good Indicator

•Charge Status Indicator

•Battery full terminated control

•Timer off control

•Fully Assembled and Tested

APPLICATIONS

•Cell Phones

•MP3 Players

•Smart Phones

•PDAs

•Digital Cameras

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

EV2605DQ-00B EVALUATION BOARD

(L x W x H) 2.0” x 1.9” x 0.5”

(5.0cm x 4.8cm x 1.2cm)

Board Number MPS IC Number

EV2605DQ-00B MP2605DQ

1200

1000

800

600

400

200

ICHG (mA)

01 234 5

BATTERY

(V)

I-V Charge Curve

SET

=1.82K

SET

=2.15K

SET

=3.6K

SET

=8.66K

EV2605DQ-00B – SINGLE CELL 1A LINEAR LI-ION BATTERY CHARGER EVAL BOARD

EV2605DQ-00B Rev. 1.0 www.MonolithicPower.com 2

3/9/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

EVALUATION BOARD SCHEMATIC

MP2605

IN ACOK

NTC BAT

ISET

GND

TMR

CHG

JP1 JP2 JP3

BAT

GND

EV2605DQ-00B BILL OF MATERIALS

Qty Ref Value Description Package Manufacturer Manufacturer P/N

Murata GRM32ER71H475KA88L

1 C1 4.7uF Ceramic Cap, 35V, X7R 1210 Holystone C1210B475M035T

1 C2 NC Ceramic Cap, 35V, X7R 1206 TDK C3216X7R1H105K

1 C3 0.1uF Ceramic Cap, 16V, X7R 603 TDK C1608X7R1C104K

1 C4 2.2uF Ceramic Cap, 16V, X7R 1210 Murata GRM32MR71C225MC01L

1 C5 2.2uF

Ceramic Cap, 16V, ±10%,

X7R 805 TDK C2012X7R1C225K

2 R1,

R2 1K Film Res, 5% 603 Panasonic ERJ-3GEYJ102V

1 R3 499k Film Res, 1% 603 Panasonic ERJ-3EKF4993V

1 R4 100k Film Res, 1% 603 Panasonic ERJ-3EKF1003V

1 R5 2.21K Film Res, 1% 603 Panasonic ERJ-3EKF2211V

1 R6 3.6K Film Res, 1% 603 YAGEO 9C06031A3601FKHFT

1 R7 8.66K Film Res, 1% 603 Panasonic ERJ-3EKF8661V

1 R8 0ΩFilm Res, 5% 603 YAGEO 9C06031A0000FKHFT

JP1,

JP2,

JP3

3x2-Pin Connector Header, 0.100" Molex 10-89-1601

1 LED1 Led Green, Surface Mount 805 Panasonic LNJ306G5URA

1 LED2 Led Red, Surface Mount 805 Panasonic LNJ206R5RRX

1 U1 Linear Charger QFN10 MPS MP2605DQ

EV2605DQ-00B – SINGLE CELL 1A LINEAR LI-ION BATTERY CHARGER EVAL BOARD

EV2605DQ-00B Rev. 1.0 www.MonolithicPower.com 3

3/9/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

PRINTED CIRCUIT BOARD LAYOUT

Figure 1—Top Silk Layer Figure 2—Top Layer

Figure 3—Bottom Layer

EV2605DQ-00B – SINGLE CELL 1A LINEAR LI-ION BATTERY CHARGER EVAL BOARD

NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.

Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS

products into any application. MPS will not assume any legal responsibility for any said applications.

EV2605DQ-00B Rev. 1.0 www.MonolithicPower.com 4

3/9/2009 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

QUICK START GUIDE

The output voltage on this board is preset to 4.2V (for a single cell battery). The board layout

accommodates most commonly used capacitors.

The LEDs are power indicators. When LED1 is on, the 5V input is present (LED1 is off when the input

is disconnected). When LED2 is on, the battery is charging, and when the battery is full or there is no

battery connected, LED 2 will turn off.

1. Set the charge current ICHG using the jumpers JP1, JP2 and JP3 per the following table:

JP1 JP2 JP3 ICHG

X X 1000mA

X 800mA

X X 700mA

X 500mA

X 200mA

Where “X” indicates a connection.

2. Attach the positive and negative ends of the load to the VOUT and GND pins, respectively.

3. Attach the input voltage (VIN=5V) and the input ground to the VIN and GND pins, respectively.

4. The timer cap, C5 on EVB is 2.2µF. This will set the oscillator frequency to be 5HZ. For different

oscillator frequency setting, please follow the formula:

2.2

5CF

HzFosc

×=

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