AXP202 datasheet(16/48 Pages) ETC2

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Single Cell Li-Battery PWM Charger and Power System Management IC

AXP202

System Reset and Output Monitoring (PWROK)

The PWROK in AXP202 can be used as the reset signal of application system. During AXP202 startup,

PWROK outputs low level, which will then be pulled high to startup and reset the system after each

output voltage reaches the regulated value.

When application system works normally, AXP202 will be always monitoring the voltage and load

status. If overload or under-voltage occurs, the PWROK will instantly drive low to reset the system and

prevent data losses.

9.2 Power Path Management (IPS)

Power input of AXP202 may come from Li-battery, USB VBUS input, external power ACIN (such as

AC adapter). IPS can select proper power according to external power and Li-battery status.

If only Li-battery is available, and no external power input, Li-battery is used for power input;

If external power is available (VBUS or ACIN), it is preferred in power supply

Write “1” to REG31H[3] to

start the sleep，and PMU will

save

REG12H setting at that

time

Disable corresponding power

or modify the voltage

Sleep and wait to be Wakeup

Wakeup？

Restore the Power to the

default output voltage.

AXP202 Datasheet(PDF) 16 Page - List of Unclassifed Manufacturers