ADP2291_15 Datasheet, PDF (15/20 Pages) Analog Devices – Compact, 1.5 A Linear Charger for Single-Cell Li Battery

VIN < 3.8V
FROM ANYWHERE
ASYNCHRONOUSLY
POWER-DOWN
VRS = 0mV
CHG = OPEN
VIN > 3.8V
START
VRS = 0mV
CHG = OPEN
START SEQUENCE ENDS
PRECHARGE
VRS = 15mV
CHG = LOW
T = 30 MIN
BATTERY
FAULT
VRS = 0mV
CHG = OPEN
VADJ > 0.4V AND TEMP < 100°C
VBAT > 2.8V
VBAT < 2.8V
FAST CHARGE
VRS = 150mV
CHG = LOW
VADJ < 0.4V
IPNP < C/10 AND
VBAT > 4.1V
VBAT < 4.1V OR
IPNP > C/10
T = 3 HOUR
END OF
CHARGE
VRS = 15mV
CHG = OPEN
T = 30 MIN
VADJ < 0.4V
SHUTDOWN
VRS = 0mV
CHG = OPEN
VADJ < 0.4V
TIME OUT
VRS = 0mV
CHG = OPEN
VBAT < 4.1V
TEMP > 135°C
FROM ANYWHERE
ASYNCHRONOUSLY
Figure 26. State Diagram for the ADP2291
CTIMER = 0.1 µF
ADP2291
Rev. A | Page 15 of 20