MP2610 MPS, MP2610 Datasheet - Page 14

• Manufacturer Part Number: MP2610
• Description: 2a, 24v Input, 1.1mhz 1/2 - Cell Switching Li-ion Battery Charger
• Manufacturer: MPS

PC Board Layout
The high frequency and high current paths (GND,
IN and SW) should be placed to the device with
short, direct and wide traces. The input capacitor
needs to be as close as possible to the IN and
GND pins. The external feedback resistors
should be placed next to the FB pin. Keep the
switching node SW short and away from the
feedback network.
Application for USB Input
When a USB is selected as the power source of
the switching charger, the typical application
circuit is as figure 7 shows. One PMOS is used
instead of the block diode D1 to low down the
MP2610 Rev. 0.91
7/13/2010
MP2610 – 2A, 24V INPUT, 1.1MHz 1-2CELL SWITCHING LI-ION BATTERY CHARGER
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voltage drop, and realizing less minimum input to
charge a single cell battery full. The charge
current is set to be 1A to satisfy turbo USB or
5Vin Wall-Adapter specification requirement and
realize the fast charging.
Figure 8 is the typical charging curve. The charge
current can’t keep constant at the setting value
during the operation at the constant current
charging mode. It drops down when the
maximum duty of the part is hit. Set the charge
current lower, the constant current charge
duration will be extended. Results illuminates that
MP2610 is reasonable for the usual USB input
application.
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