MP26057 Datasheet, PDF (1/11 Pages) Monolithic Power Systems – 28V, 1A Linear Li-lon Travel Charger With Trickle Charge and Timer

The Future of Analog IC Technology
DESCRIPTION
The MP26057 is a linear, high performance
single cell Li-Ion or Li-Polymer battery charger.
By integrating high voltage input protection into
the charger IC, the MP26057 can tolerate an
input surge up to 28V.
The device features constant current (CC) and
constant voltage (CV) charging modes with
programmable charge currents (200mA to 1A),
current blocking and trickle charge. The other
features include the programmable battery full
threshold, termination and auto-recharge.
MP26057 provides charger status indication to
drive red and green LEDs (tri-color indication).
For guaranteed safe operation, the MP26057
limits the die temperature to a preset value
when the device is heated up due to limited
PCB space. Other safety features are battery
temperature monitoring, and programmable
timer to prevent prolonged charging a dead
battery.
MP26057 is available in a 10-pin 3mm x 3mm
DFN package.
TYPICAL APPLICATION
MP26057
28V, 1A Linear Li-lon Travel Charger
With Trickle Charge and Timer
FEATURES
• Complete Solution for Charging Single-Cell
Lion-Ion Battery
• Input Surge Up to 28V
• Wide Input Operating Range 3.5V – 7V
• Adapter or USB Input
• Programmable Charge Current: 200mA to 1A
• Programmable Timer
• Termination and Auto-Recharge
• 0.75% V_BATT Accuracy over Temperature
• <1µA Battery Reverse Current
• 125µA Standby Current from V_IN
• Battery Temperature Monitoring
• Automatic Die Temperature Limiting
• Fault and Charge Status Indicators
• Soft-Start to Limit Inrush Current
• Tiny 3mm x 3mm QFN Package
APPLICATIONS
• Cell Phones
• Digital Cameras
• Smart Phones
• PDAs
• MP3 Players
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
VIN
GND
NTC
3.5V-6.5V
C1
35V
C3
16V
1 _IN
LED1
U1 ^Green
2
GRN
MP26057
9 _NTC
RED ³
6 _SS
BAT ¹⁰
7 _IBF
ISET ⁸
4 _TMR
C4
16V
GND ⁵
LED2
Red
C2
16V
BAT
GND
MP26057 Rev. 0.91
www.MonolithicPower.com
1
1/25/2010
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