ISL9301_14 Datasheet, PDF (11/12 Pages) Intersil Corporation – High Input Voltage Charger With Power Path Management

ISL9301
POWER
UP
N
VIN>VPO R?
Y
N
VIN<VO VP?
Y
POR
N
VIN>VO UT +VO S?
Y
IN ITIA LIZA TIO N
RESET TIM ER
V B A T>VMIN
N
TRICKLE CHARG E
PPR = L
Y
CHG = L
VO UT = 4.5V
CHARGER = ON
Y
IO U T >ILIM ?
N
B A TT D ISC H A R G E
VOUT = ON
ICHG = -(IO UT – ILIM )
CHARGER =
REVERSED
CHG = HI
TIM ER RESET
IREF+IO UT >
ILIM ?
N
FAST CHARGE
VOUT = ON
IC H G = IR EF
CHARGER = ON
CHG = LO
Y
PPM
VOUT = ON
IC H G = (ILIM – IO U T)
CHARGER = ON
CHG = LO
N
VBAT = 4.2V?
Y
CV CHARGE
VOUT = ON
CHARGER = ON
CHG = LO
CHARGER FAULT
VOUT = ON
CHARGER = OFF
CHG = BLINKING
POWER DOWN
TO POWER UP
Y
TIM EO U T?
N
ICHG < IMIN?
N
Y
CHARGE COMPLETE
VOUT = ON
CHARGER = ON
CHG = HI
ANYTIM E DIE
TEMPERATURE
EXCEEDS 142 ^OC
OTP
VOUT = VBAT
CHARGER = OFF
CHG = HI
N
Tim eout?
Y
D ISA B LED
VOUT = ON
Charger = OFF
CHG = HI
Tdie < 110 ^oC ?
N
Y
VOUT <
VRECH?
N
Y
FIGURE 6. STATE DIAGRAM
11
FN6435.3
September 21, 2011