BQ25600 Datasheet, PDF (17/66 Pages) Texas Instruments – I2C Controlled 3.0-A, Single Cell Battery Charger With up-to 40-V Overvoltage Protection Controller for High-Input Voltage and Narrow Voltage DC (NVDC) Power Path Management

www.ti.com
7 Detailed Description
bq25600, bq25600D
SLUSCJ4 – JUNE 2017
7.1 Overview
The bq25600 and bq25600D device is a highly integrated 3.0-A switch-mode battery charger for single cell Li-Ion
and Li-polymer battery. It includes the input reverse-blocking FET (RBFET, Q1), high-side switching FET
(HSFET, Q2), low-side switching FET (LSFET, Q3), and battery FET (BATFET, Q4), and bootstrap diode for the
high-side gate drive.
7.2 Functional Block Diagram
VBUS
ACDRV
VAC
D+ (bq25600D)
'Å (bq25600D)
PSEL (bq25600)
INT
STAT /
IMON
/PG
IIN
EN_REGN
VVVAC_PRESENT
+
VVAC
±
VBAT + VSLEEP
+
VVAC _±
VVAC ₊
VVAC_OV _±
VVBUS
±
VINDPM
+
IIN ₊
IINDPM
±
IC TJ
+
TREG
±
SYS
±
VSYSMIN
+
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
±
BATSNS ^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
BAD_SRC
Converter
Control State
Machine
TSHUT
USB
Adapter
BAT_GD
RECHRG
I2C
Interface
TERMINATION
CHARGE
CONTROL
STATE
MACHINE
BATLOWV
BATSHORT
SUSPEND
IBADSRC
+
IDC
±
IC TJ
+
TSHUT
±
BATSNS
+
VBATGD
±
VREG -VRECHG
+
BATSNS
±
ICHG
+
ITERM
±
VBATLOWV
+
BATSNS
±
VSHORT
+
BATSNS
±
VBAT_REG
ICHG_REG
ICHG
Q4 Gate
Control
BATFET
(Q4)
BAT
VQON
BATSNS
/QON
bq25600(D)
Battery
Sensing
TS
Thermistor
SCL SDA /CE
Copyright © 2017, Texas Instruments Incorporated
Copyright © 2017, Texas Instruments Incorporated
Product Folder Links: bq25600 bq25600D
Submit Documentation Feedback
17