BQ25504 Datasheet, PDF (9/24 Pages) Texas Instruments – Ultra Low Power Boost Converter with Battery Management for Energy Harvester Applications

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HIGH-LEVEL FUNCTIONAL BLOCK DIAGRAM
LBST VSTOR
VBAT
VSS
bq25504
SLUSAH0 – OCTOBER 2011
VSS
VIN_DC
Cold-Start
Unit
Enable
Interrupt
Boost Charge
Controller
Enable
VOC_SAMP
VREF_SAMP
MPPT
Controller
BAT_SAVE
Vref
OT
Temperature
Sensing
Element
Bias Reference
and Oscillator
Vref
Battery Threshold
Control
OK
Vref
OT_PROG VBAT_OV VRDIV VBAT_UV
Figure 5. High-level Functional Diagram
AVSS
VBAT_OK
OK_PROG
OK_HYST
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