Data Sheet

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(TERM)
BAT-SC
Q1
Q2
t
DGL1(LOWV)
t
DGL(RCH)
V
LOWV
V
RCH
I
NTC
V
HOT
V
COLD
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
~100mV
Fast-Charge
Timer
Pre-Charge
Timer
Halttimers
Timerfault
EN1
EN2
USBSuspend
EN2
CE
IN
EN1
EN2
CHG
PGOOD
TS
TD
(bq24072,
bq24073)
OUT
BAT
ISET
ILIM
TMR
ChargeControl
V
IN-LOW
V
BAT
OUT-SC2
Resettimers
t
DGL(TS)
Timersdisabled
I
BIAS- ITERM
ITERM
bq24074
V
OUT
Supplement
I TERM-floating
t
DGL(SC2)
V
BAT
250mV
40mV
V
DIS(TS)
~3V
t
DGL2(LOWV)
225mV
(’72, ’73, ’75)
2.25V
Fastcharge
225mV
Precharge
SYSOFF
bq24075
bq24079
CHARGEPUMP
bq24072 , bq24073 , bq24074 , bq24075 , bq24079
SLUS810K –SEPTEMBER 2008–REVISED MARCH 2015 www.ti.com
9.2 Functional Block Diagram
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Product Folder Links: bq24072 bq24073 bq24074 bq24075 bq24079