BQ25070 Datasheet, PDF (7/21 Pages) Texas Instruments – 1A, Single-Input, Single-Cell LiFePO4 Linear Battery Charger with 50mA LDO

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SIMPLIFIED BLOCK DIAGRAM
IN
IMON
–
Q1
Q2
Charge
Pump
I_IN(REG)
–
1.5V +
Charge
Pump
125°C
– T_J
V_BAT(REG)
–
+ V_REF
bq25070
SLUSA66 – JULY 2011
LDO
OUT
BAT
CTRL
TS
ILIM
Overcharge Comparator
V_BAT
– _3.7V
260kΩ
Digital
Decode
VLDO
OVP Comparator
V_OVP ⁺
V_IN
Charge
Control
Sleep Comparator 75mV
– _VIN
V_BAT
Status
Output
+ TS Cold
+ TS Hot
Disable
GND
CHG
Copyright © 2011, Texas Instruments Incorporated
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