MP2608- 28V, 1A DUAL INPUT LINEAR BATTERY CHARGER WITH TIMER

MP2608 Rev. 0.9

www.MonolithicPower.com

10

8/29/2008

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© 2008 MPS. All Rights Reserved.

TBD

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Figure 3—Charge Current vs. 1/RPGM

Resistance

STATUS

POR Threshold

FAULT

15 Cycles to

1/8 TIMEOUT

2.6V

15 Cycles

Figure 4—MP2608 Typical Re-Charging

Waveforms

Charge Status and Fault Indication

charging status. While battery is being charged,

full condition is reached or any other condition

prevents

the

charger

from

charging,

the

STATUS

then latched till a new charge cycle is started.

Upon a time-out fault event happen, the FAULT

can not reach EOC status before the timeout

happens, this fault status is latched, the charging

is suspended, and the FAULT pin is pulled low.

be recycled. One time-out period is equivalent to

on the TMR pin, it takes 3.64 hours.

The Power On and recharge cycle are illustrated

in Figure 4.