Datasheet

www.ti.com
AC
USB
+
+
OUT
ISET1
REF
BIAS
AND
UVLO
ISET2
CHARGE
CONTROL,
TIMER,
AND
DISPLAY
LOGIC
THERMAL
SHUTDOWN
PRECHARGE
RECHARGE
TAPER
CHG ENABLE
STAT1
STAT2
TERM
CHG
ENABLE
CE
USB
AC
SUSPEND
SLEEP (AC)
SLEEP (USB)
VO(REG)
VSS
TS
500 mA/ 100 mA
USB CHARGE
500 mA/ 100 mA
PRECHARGE
(C/10)
ISET1
*
*
*
*
*
*
*
*
*
SIGNAL DEGLITCHED
I
(TS)
V
(HTF)
V
(LTF)
t
(TAPER)
TIMER
V
I(OUT)
V
I(AC)
V
I(OUT)
V
I(USB)
V
I(OUT)
V
I(OUT)
V
I(SET)
V
I(SET)
V
I(SET)
AC/USB
V
I(ISET-USB)
V
I(SET)
V
I(OUT)
V
I(REG)
V
I(AC)
V
I(USB)
V
I(OUT)
V
I(ISET)
V
I(ISET-USB)
AC/USB
V
(SET)
AC/USB
sensefet
sensefet
sensefet
100 mA/500 mA
V
BAT
UDG−02185
TTE
OR
TE
PG
V
O(REG)
UVLO
bq24020 , , bq24022 , , bq24023
bq24024 , bq24025 , bq24026
bq24027
SLUS549E – DECEMBER 2002 – REVISED NOVEMBER 2007
FUNCTIONAL BLOCK DIAGRAM
8 Submit Documentation Feedback Copyright © 2002 – 2007, Texas Instruments Incorporated
Product Folder Link(s): bq24020 bq24022 bq24023 bq24024 bq24025 bq24026 bq24027