BQ24040 Datasheet, PDF (9/31 Pages) Texas Instruments – 800mA Single-Input Single Cell Li-Ion Battery Charger With Auto Start

bq24040
bq24041
www.ti.com.................................................................................................................................... SLUS941A – SEPTEMBER 2009 – REVISED SEPTEMBER 2009
FUNCTIONAL BLOCK DIAGRAM
IN
I_OUT x 1.5 V
540 AW
ISET
Internal Charge
Current Sense
w/ Multiple Outputs
+ _{80 mV}
-
+
OUT
_
Input
Power
Detect
Charge
Pump
IN
+
_
IN-DPMREF
FAST CHARGE
PRE-CHARGE
IN
1.5V
Pre-CHG Reference
OUT
OUT
OUTREGREF
TJ°C
125°CREF
USB Sense
Resistor
Term Reference
+
_
75mA ⁺
PRE-TERM
Bq24040
Only
+_{Increased from 75mA to 85mA for}
1^st minute of charge.
+
_
OUT
+
VTERM_EN
_
ISET2 (LO = ISET, HI = USB500, 0.9V Float
FLOAT = USB100)
VCOLD-10^oC
HI = Half CHG (JEITA)
VHOT-45^oC
VCOLD-FLT
HI = 4.06Vreg (JEITA)
USB100/500REF
T_J^oC
150^oC_REF
Thermal Shutdown
X2 Gain (1: 2)
Term:Pre-CHGX2
IN
OVP_REF
CHARGE
CONTROL
VHOT-FLT
TS/BAT_EN
VTTDM
TS - bq24040
BAT_EN - bq24041
VCE
VDISABLE
5mA
LO = TTDM MODE
HI = Suspend CHG
+
_
+
bq24041 This Comparator Only – No TS Features
_
HI=CHIP DISABLE
+
_
Cold Temperature
Disable
Sink Current
Sink Current
= 45mA
VCLAMP = 1.4V
+
= 20mA
+
_
_
45mA
Bq24040 is as shown
Bq24041 has no Current Sinks and only 5mA Current Source
Charge
Pump
ON:
OFF:
CHG
On During
1st Charge Only
PG
OUT
ASO
bq24041
Only
ASI
200kW
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): bq24040 bq24041
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