Datasheet
1 Fm
1 Fm
1kW
1.5kW
1.5kW
2kW
Disconnect after Detection
+
Battery Pack
VBUS
GND
D+
D-
USB Port
DC+
GND
Adaptor
VDD
D-
D+
GND
TTDM
Host
System Load
OR
ISET/100/500mA
1
2
3
4
5
10
9
8
7
6
IN
ISET
VSS
PRETERM
PG
NC
ISET2
CHG
TS
OUT
bq2409x
+
bq24090, bq24091
bq24092, bq24093
bq24095
www.ti.com
SLUS968E –JANUARY 2010–REVISED SEPTEMBER 2013
1A, Single-Input, Single Cell Li-Ion and Li-Pol Battery Charger
Check for Samples: bq24090, bq24091, bq24092, bq24093, bq24095
1
FEATURES
APPLICATIONS
• CHARGING • Smart Phones
– 1% Charge Voltage Accuracy • PDAs
– 10% Charge Current Accuracy • MP3 Players
– Pin Selectable USB 100mA and 500mA • Low-Power Handheld Devices
Maximum Input Current Limit
DESCRIPTION
– Programmable Termination and Precharge
The bq2409x series of devices are highly integrated
Threshold
Li-ion and Li-Pol linear chargers devices targeted at
• PROTECTION
space-limited portable applications. The devices
– 6.6V Over-Voltage Protection
operate from either a USB port or AC adapter. The
high input voltage range with input overvoltage
– Input Voltage Dynamic Power Management
protection supports low-cost unregulated adapters.
– 125°C Thermal Regulation; 150°C Thermal
Shutdown Protection
The bq2409x has a single power output that charges
the battery. A system load can be placed in parallel
– OUT Short-Circuit Protection and ISET
with the battery as long as the average system load
Short Detection
does not keep the battery from charging fully during
– Operation Over JEITA Range via Battery
the 10 hour safety timer.
NTC – ½ Fast-Charge-Current at Cold,
The battery is charged in three phases: conditioning,
4.06V at Hot, bq24092/3
constant current and constant voltage. In all charge
– Fixed 10 Hour Safety Timer
phases, an internal control loop monitors the IC
• SYSTEM
junction temperature and reduces the charge current
if an internal temperature threshold is exceeded.
– Automatic Termination and Timer Disable
Mode (TTDM) for Absent Battery Pack With
Thermistor
– Status Indication – Charging/Done
– Available in Small 10-Pin MSOP Package
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.