BQ24080-Q1 Datasheet, PDF (1/28 Pages) Texas Instruments – Li-Ion and Li-Pol Automotive Charger

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bq24080-Q1, bq24081-Q1
SLUSCB6 – MAY 2015
bq2408x-Q1 1-A, Single Chip, Li-Ion and Li-Pol Automotive Charger
1 Features
•1 Integrated Power FET and Current Sensor for
Up to 1-A Charge Applications From AC Adapter
• Precharge Conditioning With Safety Timer
• Charge and Power-Good Status Output
• Automatic Sleep Mode for Low Power
Consumption
• Integrated Charge-Current Monitor
• Fixed 7-Hour Fast Charge Safety Timer
• Ideal for Low-Dropout Charger Designs for
Single-Cell Li-Ion or Li-Pol Packs in
Space-Limited Portable Applications
• Small 3-mm × 3-mm SON Package
2 Applications
• Linear Chargers for Automotive
• E-Call/ Back Up Call battery
• Automotive Infotainment
• Key FOB in Automotive
3 Description
The bq24080-Q1 and bq24081-Q1 are highly
integrated and flexible Li-Ion linear charge devices
targeted at space-limited charger applications. They
offer an integrated power FET and current sensor,
high-accuracy current and voltage regulation, charge
status, and charge termination, in a single monolithic
device. An external resistor sets the magnitude of the
charge current.
The device charges the battery in three phases:
conditioning, constant current, and constant voltage.
Charge is terminated based on minimum current. An
internal charge timer provides a backup safety for
charge termination. The device automatically restarts
the charge if the battery voltage falls below an
internal threshold. The device automatically enters
sleep mode when the ac adapter is removed.
Device Information⁽¹⁾
PART NUMBER
bq24080-Q1⁽²⁾
bq24081-Q1
PACKAGE
VSON (10)
BODY SIZE (NOM)
3.00 mm x 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
(2) Product Preview
4 Simplified Schematic
AC
Adapter
VDC
GND
C₁
0.1 mF
bq24080-Q1
1 IN
OUT 10
2 NC
CE 9
PACK+
C₂
0.1 µF
PACK–
3 STAT1 PG 8
4 STAT2 VBSEL 7
5 V_SS
ISET 6
R_SET
1.13 kW
Battery Pack
+
System
System
Interface
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.