BQ24901_13 Datasheet, PDF (6/18 Pages) Texas Instruments – OFFLNE APPLICATIONS

bq24901
SLUS527 – DECEMBER 2002
FUNCTIONAL BLOCK DIAGRAM
VCC
CC
2
13
SNS
12
11 BAT
TS 10
VREF 9
TADJ 8
SCOMP 3
OPTD 1
VSS 14
SHUTDOWN
POR
FILTER ^ITERM
SHUTDOWN
PRECHARGE
TERMINATION
SUSPEND
LTF
HTF
DECODE LOGIC AND
RAMP CONTROL
ILIM BYPASS
FILTER
SHUT
DOWN
VUVT
FILTER
Term_det_EN
(to SM)
BAT
VHEG – 100 mV
WAKE
VCC
BAT_PRS_wake
(to SM)
WAKE_SRC
BAT
TCO
+
VBANDGAP
ITERM
CHARGE CONTROL,
TIMER,
AND
DISPLAY LOGIC
CHARGE
DISCHARGE
TERMINATION
PRECHARGE
SUSPEND
FASTCHARGE
ICHARGE_SINK
IDSCHRG
START–UP
LOGIC
Term_det_EN BAT_PRS_wake
VCC
SHUTDOWN
+
VBANDGAP
VIBAT
DISC_RES
+
FILTER
+
VBANDGAP
SHUTDOWN
SUSPEND
TERMINATION
RAMP
CONTROL
VICHG
FASTCHARGE
DISC_RES
6 STAT1
7 STAT2
4 ICOMP
5 VCOMP
UDG–02182
6
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