Datasheet

ADP2291
Rev. A | Page 11 of 20
THERMAL SHUTDOWN
If the ADP2291 junction temperature rises above 135°C,
thermal shutdown occurs. Extreme junction temperatures can
be the result of excessive current operation and/or high ambient
temperatures.
A 35°C temperature hysteresis is included so that the ADP2291
does not return to operation during thermal shutdown until the
on-chip temperature drops below 100°C.
CONTROL
LOGIC
TIMER
TEMP
VOLTAGE
REFERENCE
GM
3V
1.2V
5V
GM GM
TIMER
ADJ
BATDRVCSIN
SHUTDOWN
VIN_GOOD
RESTART
BAT
4.1V
BAT
2.5V
CHG
0.4V
IN
BAT
IN
3.8V
IPNP
C/10
PRECHARGE
POWER_DOWN
END_OF_CHARGE
04873-020
Figure 20. Functional Block Diagram