MP26506 MPS, MP26506 Datasheet

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MP26506

Manufacturer Part Number
MP26506
Description
28v, Li+single-cell Battery Charger With Usb/ac-adapter Input & Reverse Polarity Protection
Manufacturer
MPS
Datasheet
The Future of Analog IC Technology
DESCRIPTION
The MP26056 is a linear, high performance
single cell Li-Ion or Li-Polymer battery charger
with dual programmable constant current set.
By integrating high voltage input protection into
the charger IC, the MP26056 can tolerate an
input surge up to 28V.
The device features constant current (CC) and
constant voltage (CV) charging modes, reverse
current blocking and trickle charge. Other
features include the programmable battery full
threshold supporting dual AC/USB input by
automatically changing to a lower charge
current when the USB is the power supply. The
MP26056 also provides ACOK and charge
status indications to the system.
For guaranteed safe operation, the MP26056
limits the die temperature to a preset value
when the device is heated up due to limited
PCB space. Other safety features include
battery
programmable timer to prevent prolonged
charging a dead battery.
MP26056 is available in 10-pin 3mm x 3mm
QFN packages.
MP26056 Rev. 0.9
7/31/2008
TYPICAL APPLICATION
SHDN
MOD
GND
3.5~6.5
VIN
temperature
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
LED1
Red
monitoring
LED2
Green
5
1
2
3
4
© 2008 MPS. All Rights Reserved.
CHG
ACOK
VIN
MOD
GND
MP26056
www.MonolithicPower.com
U1
and
ISET2
ISET1
SHDN
BAT
IBF
10
9
7
6
8
28V, Li+Single-Cell Battery Charger
FEATURES
APPLICATIONS
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
Complete Solution for Charging Single-Cell
Lion-Ion Battery
Input Surge Up to 28V
Dual USB/AC-Adapter Input with Auto
Charge-Current Control
Input polarity reverse protection to -16V
Wide input operating range 3.5V to 6.5V
7V Input Over-Voltage Protection
Programmable Charge Current: 100mA to 1A
80µA Idle Current with USB Input
0.75% V
<1µA Battery Reverse Current
Automatic die temperature limiting
Fault and Charge Status Indicators
Internal Soft-Start to limit inrush current
Tiny 3mm x 3mm QFN Package
Cell Phones
Digital Cameras
Smart Phones
PDAs
MP3 Players
with USB/AC-Adapter Input &
Reverse Polarity Protection
BATT
Accuracy over Temperature
MP26056
GND
BAT
1

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MP26506 Summary of contents

Page 1

... Tiny 3mm x 3mm QFN Package APPLICATIONS • Cell Phones • and Digital Cameras • Smart Phones • PDAs • MP3 Players “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc LED2 VIN BAT Green 2 9 ISET2 ACOK ...

Page 2

... CHG Regulation Constant Current Variation Trickle Current MP26056 Rev. 0.9 7/31/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. ABSOLUTE MAXIMUM RATINGS IN to GND ..................................... –16V to +28V ACOK & CHG Maximum Sink current……25mA All Other Pins to GND................. –0.3V to +6.5V 10 Junction Temperature...............................140°C 9 Lead Temperature ....................................260° ...

Page 3

... CHG the target preprogrammed battery full current threshold BF MP26056 Rev. 0.9 7/31/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (continued) Refer to Operation section for programming I BF Input rising Input rising Z Pin Voltage = 0 ...

Page 4

... Additional Constant Charge Current Program pin for AC input. Connect this pin ISET2 external resistor to program the charging current in AC Mode. I when Mod=LOW 10 BATT Charger Output. MP26056 Rev. 0.9 7/31/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. =1.7/Rset1 when Mod=HIGH CHG www.MonolithicPower.com © 2008 MPS. All Rights Reserved. < 6.5V. IN =1.7/Rbf BF =1.7/(Rset1// Rset2) ...

Page 5

... CV mode, and the battery full indication is set when the charge current reduced to the preset value based but the charger keeps IBF charging the battery until battery reach 4.2V when AC adaptor is used as supply. If USB is MP26056 Rev. 0.9 7/31/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited BATT 10 CHG 8.2V 4 ...

Page 6

... M OD Figure 3—Filtered Charge Status with GPIO Connection MP26056 Rev. 0.9 7/31/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. may draw a very narrow current pulse that exceeds the IBF threshold. The CHG indicator may glitch desirable to blank the CHG glitch so that the system can properly indicate full charge conditions to the end user ...

Page 7

... I < 0.6 I CHG BF CHG. MP26056 Rev. 0.9 7/31/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. pin CHG When the battery full condition is reached or any other condition prevents the charger from charging, Thermal Protection The MP26056 has proprietary thermal protection to prevent the IC from overheating. When in ...

Page 8

... CHG LED Off MOD “High” Termination NO YES V <4.0V? BAT MP26056 Rev. 0.9 7/31/2008 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. Modes of the MP26056 CVC and CCC stand for “constant voltage charge” and “constant current charge”, respectively. POR V > Charging Set up? CHG LED “ ...

Page 9

... NOTICE: The information in this document is subject to change without notice. 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. ...

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