Datasheet

IN
ISET2
Thermal
Shutdown
Precharge
Recharge
Term
STAT1
STAT2
MODE
Suspend
Sleep
VSS
TS
BATChargeEnable
500mA/100mA
*
*
*
*
*
*
*
SignalDeglitched
UVLO
+
+
1V
DPPM
PowerSourceSelection
+
+
+
+
60mV
200mV
+
+
+
+
Disable−
Sleep
DPPM
Scaling
ISET1
BAT
ACChargeEnable
Q2
BAT
Short−Circuit
Recovery
BAT
Charge
Enable
Short−CircuitRecovery
+
Q1
AC
100mA /
500mA
+
GND
Oscillator
500
Ω
V
O(OUT)
V
I(BAT)
V
I(ISET1)
1k
Ω
I
(SNS)
V
O(OUT)
V
O(OUT−REG)
V
IO(AC)
Charge
Enable
V
O(BAT−REG)
V
I
(BAT)
V
O(BAT−REG)
V
I(BAT)
V
I(ISET1)
FastPrecharge
V
O(OUT)
I
(DPPM)
V
SET
V
SET
V
DPPM
T
J
T
J(REG)
V
(HTF)
V
(LTF)
V
O(BAT−REG)
V
BAT
V
BAT
CE
I
(TS)
V
I(ISET1)
V
BAT
V
IN
V
I(BAT)
V
O(OUT)
V
(SET)
C/S − 100mA
1C − 500mA
FastPrecharge
PG
GND
Charge
Control
Timer
and
Display
Logic
UDG−04084
Recovery
Fault
10mA
1V
280k
Ω
V
I (SNS)
TMR
OUT
V
REF
3.3V
bq24070
bq24071
SLUS694F –MARCH 2006–REVISED DECEMBER 2009 www.ti.com
FUNCTIONAL BLOCK DIAGRAM
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