BQ25040 Datasheet, PDF (7/25 Pages) Texas Instruments – 1.1A, Single-Input, Single Cell Li-Ion Battery Charger With 50mA LDO and 2.3A Production Test Support

bq25040
www.ti.com ...................................................................................................................................................... SLUS910B – MARCH 2009 – REVISED MARCH 2009
TYPICAL APPLICATION CIRCUITS
USB or TA
VBUS
GND
D+
D-
C1 R1
1 mF ^{680 W}
R2
2 kW
bq25040
IN
BAT
ISET
R3
1 kW
R4
1 kW
VSS
IFULL
PG
CHG
EN/SET
C2
1 mF
VCHG
+
-
ABB
GPIO
LDO
PWRPD
C2
1 mF
VCHG DET
USB DET
VUSBIN
Figure 1. Typical Application Circuit With Battery Always Installed, I_CHRG = 780mA, I_CHGDONE = 78mA
USB or TA
VBUS
GND
D+
D-
C1
R1
22 mF ^{680 W}
R2
2 kW
R3
1 kW
SYSTEM
PG
IN
CHG
BAT
R4
1 kW
Bulk Capacitance
needed for
operation without
battery
VCHG
ISET
bq25040
VSS
C2
+ ^{>40 mF}
1 mF
-
IFULL
EN/SET
Battery Not
Installed for PTM
ABB
GPIO
LDO
PWRPD
C2
1 mF
VCHG DET
USB DET
VUSBIN
Figure 2. Typical Application Circuit for PTM or With No Battery Installed,
I_CHRG = 780mA, I_CHGDONE = 39mA
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