Datasheet

USB100
USB500
V
REF- ILIM
USB-susp
ShortDetect
ShortDetect
T
J(REG)
T
J
V
DPPM
V
OUT
V
BAT (REG)
V
BAT(SC)
V
O(REG)
V
O(SC1) OUT-SC1
t
DGL(TE RM)
BAT-SC
Q1
Q2
t
DGL1(LOWV)
t
DGL(RCH)
V
LOWV
V
RCH
V
COLD
V
HOT
t
DGL(NO- IN)
t
DGL(PGOOD)
t
BLK(OVP)
V
BAT
+ V
IN-DT
V
UVLO
V
OVP
V
IN
Dynamically
Controlled
Oscillator
V
IPRECHG
V
ICHG
V
ISET
Fast- Charge
Timer
Pre- Charge
Timer
Halttimers
Timerfault
EN1
EN2
USBSuspend
EN2
CE
IN
EN1
EN2
CHG
PGOOD
TS
OUT
BAT
ISET
ILIM
ChargeControl
V
IN-LOW
V
BAT
OUT- SC2
Resettimers
t
DGL(TS)
V
OUT
Supplement
t
DGL(SC2 )
V
BAT
250mV
40mV
t
DGL2(LOWV)
225mV)
2.25V
Fastcharge
225mV
Precharge
SYSOFF
CHARGEPUMP
V
IN
TMR
bq24072T
bq24075T, bq24079T
www.ti.com SLUS937A –DECEMBER 2009–REVISED APRIL 2010
SIMPLIFIED BLOCK DIAGRAM
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