BQ24187 Datasheet, PDF (13/44 Pages) Texas Instruments – 1A USB-OTG Support

Not Recommended for New Designs
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Functional Block Diagrams (continued)
PMID
IN
bq24187
SLUSBM0 – APRIL 2014
4.8-V
reference
DRV
VIN_BOOST
VBOOST amp
+
VBURST_ENT
VBURST_EXT
+
Burst mode enter
comparator
+
Burst mode exit
comparator
VBOOSTSHRT
Boost short circuit
comparator
VBOOSTOVP
VBOOST
OVP comparator
DC-DC
converter
PWM logic
and
compensation
Low side current
limit comparator
IBLIMIT
VDRV
VBAT
CD
SDA
SCL
STAT
VBIAS
Battery short
circuit
Battery SC comparator
+
ILIM(SUPP)
I²C
Interface
Digital control
Q1
Q2
BOOT
SW
PGND
CS+
BAT
INT
TS
Figure 6. Block Diagram In Boost Mode
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