BQ24262_15 Datasheet, PDF (14/56 Pages) Texas Instruments – bq2426x 3-A, 30-V, Host-Controlled Single-Input, Single-Cell Switched-Mode Li-Ion Battery Charger With Power-Path Management and USB-OTG Support

Not Recommended for New Designs : bq24260, bq24261
bq24260, bq24261, bq24261M, bq24262
SLUSBU4D – DECEMBER 2013 – REVISED APRIL 2015
9.2 Functional Block Diagram
PMID
IN
I_CbCLimit
4.8V
Reference
www.ti.com
DRV
BOOT
IINLIM
VINDPM
VSYS(REG)
DC-DC CONVERTER PWM LOGIC,
COMPENSATION AND BATTERY
FET CONTROL
IBAT(REG)
VBAT(REG)
DIE Temp
Regulation
Q1
SW
Q2
PGND
VIN
VINOVP
OVP
Comparator
+
Sleep
Comparator
VIN
+
VBAT+VSLP
VSUPPLY References
Termination
Reference
Termination
Comparator
IBAT
Start Recharge
Cycle
Recharge Comparator
+ V_BATREG ± 0.12V
VBAT
CD
SDA
SCL
bq24260
D+
D-
bq24261/2
USB
Adapter
Detection
Circuitry
Hi-Z
Mode
I2C
Interface
1.5A /
USB100
Enable Linear
Charge
VSYSREG Comparator
+ V_SYS
VMINSYS
Enable HiZ in
DEFAULT mode
Enable
IBATSHRT
VBATSC Comparator
+ V_BAT
VBATSHRT
+
VBATGD
Supplement COMPARATOR
+
VBAT ^VBSUP
VSYS
VBOVP Comparator
+ V_BAT
VBATOVP
DISABLE
+
TS COLD
PSEL
STAT
INT
1C/
0.5C
VBATREG
± 0.14V
DISABLE
CHARGE
CONTROLLER
w/ Timers
+
TS COOL
+
TS WARM
+
TS HOT
Q3
Hi-Impedance Mode
VDRV
SYS
BAT
BGATE
TS
Figure 7. Block Diagram in Charging Mode
14
Submit Documentation Feedback
Copyright © 2013–2015, Texas Instruments Incorporated
Product Folder Links: bq24260 bq24261 bq24261M bq24262