MP26028 Datasheet, PDF (1/11 Pages) Monolithic Power Systems – 1A Linear Li-Ion Battery Charger with Trickle Charge

The Future of Analog IC Technology
MP26028
1A Linear
Li-Ion Battery Charger with Trickle Charge
DESCRIPTION
The MP26028 is a linear, high-performance
single cell Li-Ion battery charger. By integrating
high voltage input protection into the charger IC,
the MP26028 can tolerate an input surge up to
20V.
The device features constant current (CC) and
constant voltage (CV) charging modes with
programmable charge currents (85mA to 1A),
programmable battery full threshold, thermal
protection, reverse current blocking, and trickle
charge. The device also provides AC adapter
power good and charge status indications to the
system.
MP26028 is available in a 10-pin 3mm x 3mm
QFN package.
FEATURES
 Input Surge Up to 20V
 Adapter or USB Input
 Programmable Charge Current: 85mA to 1A
 Proprietary Constant Voltage Auto Recharge
 Proprietary Over-Voltage Protection
 0.75% V_BATT Accuracy
 <1µA Battery Reverse Current
 90µA Standby Current from V_IN
 Over Current Protection
 AC Adapter Power Good Indicator
 Charge Status Indicator
 Programmable Soft-Start
 Programmable Charge Termination Current
Threshold
 Tiny 10-Pin QFN (3mm x 3mm) Package
APPLICATIONS
 Cell Phones
 MP3 Players
 Smart Phones
 PDAs
 Digital Cameras
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Monolithic Power Systems, Inc.
TYPICAL APPLICATION
3.5V - 20V
C_IN
1uF
430Ω 430Ω
ON OFF
R1
500kΩ
R2
100kΩ
1
IN
I_BATT
BATT ¹⁰
2
CHG
ISET ⁹
MP26028
3 _ACOK
IBF ⁸
4 _EN
5
VBIAS
SS ⁷
GND ⁶
+
V_BATT
_
To system
C_OUT
1uF - 22uF
C_SS
0.1uF
R_BF
20kΩ
R_CHG
2.3kΩ
MP26028 Rev.1.01
www.MonolithicPower.com
1
10/28/2011
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.