bq24030, bq24031, bq24032,
bq24032A, bq24035, bq24038, bq24039
www.ti.com
SLUS618C–AUGUST 2004–REVISED JUNE 2005
(1)(2)
FUNCTIONAL BLOCK DIAGRAM FOR bq24030/2/5 ONLY
Short−Circuit Recovery
500 Ω
BAT
Short−Circuit
Recovery
V
O(OUT)
OUT
LDO
USB
Charge
Enable
V
O(LDO)
100 mA /
500 mA
Q1
AC
3.3−V LDO
1 kΩ Fault
Recovery
10 mA
V
SET
500 Ω
+
Short Circuit
Recovery
V
IO(AC)
Charge
Enable
AC
V
I(IUSB−SNS)
+
V
I(BAT)
Q2
V
Q3
V
O(OUT)
BAT
V
O(OUT−REG)
I(IUSB−SNS)
USB
V
I(ISET1)
ISET1
Reference, Bias & UVLO
V
I(IUSB−SNS)
+
UVLO
100 mA / 500 mA
V
V
SET
O(BAT−REG)
USB
Charge
Enable
TMR
Oscillator
V
I(BAT)
+
V
I(BAT)
V
O(BAT−REG)
V
I(ISET1)
+
V
O(OUT)
Fast Precharge
BAT
DPPM
Charge
Enable
V
*
DPPM
Scaling
SET
I
(DPPM)
+
V
+
DPPM
60 mV
Disable−
Sleep
+
V
T
J
I(BAT)
+
+
1 V
V
V
T
O(OUT)
(HTF)
J(REG)
200 mV
I
(TS)
Suspend
Thermal
Shutdown
TS
+
1 V
*
V
(LTF)
280 kΩ
Power Source Selection
USB Charge Enable
AC Charge Enable
BAT Charge Enable
500 mA/ 100 mA
PSEL
CE
V
O(BAT−REG)
Charge
Control
Timer
and
Display
Logic
Fast Precharge
Recharge
Precharge
V
BAT
*
1C − 500 mA
C/S − 100 mA
ISET2
V
BAT
V
*
ACPG
V
(SET)
USBPG
Term
I(ISET1)
*
STAT1
STAT2
Sleep (AC)
V
BAT
*
*
V
AC
VSS
Sleep (USB)
V
BAT
USB
V
*
Signal Deglitched
UDG−04084
(1) For bq24039 (product preview) see bq24039 Differences in the Functional Descriptions section.
(2) For bq24038 see bq24038 Differences in the Functional Descriptions section.
10
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