bq24030, bq24032, bq24035
SLUS618 – AUGUST 2004
www.ti.com
FUNCTIONAL BLOCK DIAGRAM
Short Circuit Recovery
500
Ω
V
O(OUT)
100 mA /
500 mA
USB
Charge
Enable
BAT Short
1 kΩ Circuit
Recovery
500
Ω
V
O(LDO)
3.3 V LDO
OUT
AC
Q1
LDO
V
SET
+
V
IO(AC)
AC Charge
Enable
V
O(OUT)
V
O(OUT−REG)
V
I(IUSB−SNS)
+
Short Circuit
Recovery
Q3
Q2
V
I(BAT)
BAT
V
I(IUSB−SNS)
V
I(ISET1)
ISET1
USB
Reference, Bias & UVLO
V
I(IUSB−SNS)
UVLO
V
O(BAT−REG)
TMR
V
I(BAT)
Oscillator
V
SET
100 mA / 500 mA
V
I(BAT)
V
O(BAT−REG)
+
+
USB
Charge
Enable
V
I(ISET1)
V
O(OUT)
Fast Pre-Charge
V
SET
V
OUT
T
J
1V
V
(HTF)
I
(TS)
TS
Thermal
Shutdown
V
(LTF)
PSEL
CE
V
O(BAT−REG)
V
BAT
*
*
T
J(REG)
+
DPPM
+
+
DPPM
I
(DPPM)
Scaling
+
Disable−
Sleep
60 mV
+
V
I(BAT)
V
O(OUT)
200 mV
+
Suspend
+
BAT
Charge
Enable
+
+
Power Source Selection
USB Charge Enable
AC Charge Enable
BAT Charge Enable
Charge
Control
Timer
and
Display
Logic
500 mA/ 100 mA
Fast Pre-Charge
Recharge
*
1C − 500 mA
C/S − 100 mA
ISET2
ACPG
V
BAT
*
V
(SET)
V
I(ISET1)
*
V
BAT
V
AC
VSS
V
BAT
V
USB
*
*
*
Precharge
Taper
USBPG
STAT1
Sleep (AC)
STAT2
Sleep (USB)
Signal Deglitched
UDG−04084
UDG−04084
8
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