BQ25040 Datasheet, PDF (6/25 Pages) Texas Instruments – 1.1A, Single-Input, Single Cell Li-Ion Battery Charger With 50mA LDO and 2.3A Production Test Support

bq25040
SLUS910B – MARCH 2009 – REVISED MARCH 2009 ...................................................................................................................................................... www.ti.com
BLOCK DIAGRAM
Q1
Q2
VIN
BAT
80mV
Charge
Pump
VIN(DPM)
ISET
IFULL
USB
Enable
USB
Sense
Element
75mA
Min
Current
Selector
Fast-
charge
Pre-
charge
Charge
Pump
1.5V 300mV
T_J(REG)
T_J
V_BAT(REG)
V_BAT(PTM)
+
EN/SET
50ms deglitch
for rising and
falling edges
260kW
VSS
V_OVP
+
V_IN
CHARGE
CONTROL
Digital
Decode
LDO
Enabled
Q5
V_IN
Q3
Q4
V_REF
CHG
PG
LDO
6
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