BQ25601 Datasheet, PDF (16/60 Pages) Texas Instruments – I2C Controlled 3-A, Single-Cell Battery Charger for High Input Voltage and Narrow Voltage DC (NVDC) Power Path Management

bq25601
SLUSCK5 – MARCH 2017
8.2 Functional Block Diagram
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VBUS
PSEL
INT
STAT
PG
IIN
VVBUS
±
VINDPM
+
IIN ₊
IINDPM
±
IC TJ
+
TREG
±
SYS
±
VSYSMIN
+
VVBUS_UVLOZ
+
VVBUS
±
VBAT + VSLEEP
+
VVBUS
±
VVBUS ₊
VVAC_OV
±
UVLO
SLEEP
ACOV
EN_REGN
EN_HIZ
REGN
LDO
RBFET (Q1)
Q1 Gate
Control
FBO
VVBUS
+
VOTG_OVP
±
VBUS_OVP_BOOST
IQ2
+
VOTG_HSZCP
±
Q2_UCP_BOOST
IQ3
+
VOTG_BAT
±
Q3_OCP_BOOST
BAT
+
104% × V BAT_REG
±
BAT
+
ILSFET_UCP
+
± ^VBAT_REG
IQ3
±
BATOVP
UCP
+ ^ICHG
± ^ICHG_REG
EN_HIZ
EN_CHARGE
EN_BOOST
HSFET (Q2)
CONVERTER
Control
REGN
Q2_OCP
REFRESH
LSFET (Q3)
IQ2
+
IHSFET_OCP
±
VBTST - VSW
+
VBTST_REFRESH
±
PMID
REGN
BTST
SW
PGND
SYS
Input
Source
Detection
REF
DAC
Converter
Control State
Machine
BAD_SRC
TSHUT
IBADSRC
+
IDC
±
IC TJ
+
TSHUT
±
USB
Adapter
RECHRG
TERMINATION
I2C
Interface
CHARGE
CONTROL
STATE
MACHINE
BATLOWV
BATSHORT
SUSPEND
VREG -VRECHG
+
BAT
±
ICHG
+
ITERM
±
VBATLOWV
+
BAT
±
VSHORT
+
BAT
±
VBAT_REG
ICHG_REG
ICHG
Q4 Gate
Control
BATFET
(Q4)
BAT
VPULL-UP
QON
Battery
Temperatue
Sensing
TS
bq25601
SCL SDA CE
8.3 Feature Description
The bq25601 is an I²C controlled power path management device and a single cell Li-Ion battery charger. It
integrates the input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side
switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery. The device also
integrates the bootstrap diode for the high-side gate drive.
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