MPS EV2605DQ-00B User manual

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.
© 2009 MPS. All Rights Reserved.
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
0
ICHG (mA)
01 234 5
V
BATTERY
(V)
I-V Charge Curve
R SET =1.82K
R
SET =2.15K
R
SET =3.6K
R
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.
© 2009 MPS. All Rights Reserved.
EVALUATION BOARD SCHEMATIC
MP2605
IN ACOK
SD
NTC BAT
ISET
GND
SS
TMR
CHG
1
6
9
7
4
8
10
3
2
5
U1
JP1 JP2 JP3
BAT
BAT
GND
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
1
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.
© 2009 MPS. All Rights Reserved.
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.
© 2009 MPS. All Rights Reserved.
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:
5
2.2
5CF HzFosc
µ
×=