BQ24230 Datasheet, PDF (7/33 Pages) Texas Instruments – USB-FRIENDLY LITHIUM-ION BATTERY CHARGER AND POWER-PATH MANAGEMENT IC

bq24230
bq24232
www.ti.com .......................................................................................................................................... SLUS821A – OCTOBER 2008 – REVISED DECEMBER 2008
Table 1. EN1/EN2 Settings
EN2
EN1 Maximum input current into IN pin
0
0
100 mA. USB100 mode
0
1
500 mA. USB500 mode
1
0
Set by an external resistor from ILIM to VSS
1
1
Standby (USB suspend mode)
SIMPLIFIED BLOCK DIAGRAM
IN
Short Detect
ILIM
USB100
USB500
USB- susp
EN2
EN1
ITERM
bq24232
VO (SC1)
Q1
OUT- SC1
EN2
VIN-LOW
VREF-ILIM
VO (REG)
225 mV
Precharge
2. 2.5 V
Fastcharge
TJ
TJ (REG)
VDPPM
VOUT
VBAT(REG)
IBIAS-ITERM
CHARGEPUMP
225 mV
VOUT
40 mV
V LOWV
~3 V
ITERM- _floating
250 mV
VBAT
OUT- SC 2
tDGL(SC2)
OUT
ISET
Short Detect
Q2
BAT
Supplement
VRCH
VBAT _(SC)
VIN
V BAT+ VIN-DT
VUVLO
VOVP
t _{DGL (NO-IN)}
t _DGL(PGOOD)
t _{BLK (OVP)}
BAT - SC
Charge Control
t _{DGL (TS )}
CE
VIPRECHG
V _CIHG
VISET
TMR
~100 mV
EN1
EN2
USB Suspend
Dynamically
Controlled
Oscillator
Halt timers
Reset timers
Timers disabled
Fast- Charge
Timer
Pre -Charge
Timer
Timer fault
I NTC
V HOT
TS
V COLD
VDIS(TS)
TD
bq24230
CHG
PGOOD
Copyright © 2008, Texas Instruments Incorporated
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