BQ24075-Q1 Datasheet, PDF (1/36 Pages) Texas Instruments – 1.5A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC

bq24075-Q1
www.ti.com
SLUSAU3B – FEBRUARY 2012 – REVISED MARCH 2012
1.5A USB-FRIENDLY Li-Ion BATTERY CHARGER AND POWER-PATH MANAGEMENT IC
Check for Samples: bq24075-Q1
FEATURES
1
• Qualified for Automotive Applications
• AEC-Q100 Qualified with the following results
– Device Temperature Grade 1: -40°C to
+125°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C3B
• Fully Compliant USB Charger
– Selectable 100mA and 500mA Maximum
Input Current
– 100mA Maximum Current Limit Ensures
Compliance to USB-IF Standard
– Input based Dynamic Power Management
(V_IN-DPM) for Protection Against Poor USB
Sources
• 28V Input Rating with Overvoltage Protection
• Integrated Dynamic Power Path Management
(DPPM) Function Simultaneously and
Independently Powers the System and
Charges the Battery
• Supports up to 1.5A Charge Current with
Current Monitoring Output (ISET)
• Programmable Input Current Limit up to 1.5A
for Wall Adapters
• Battery Disconnect Function with SYSOFF
Input
• Programmable Pre-Charge and Fast-Charge
Safety Timers
• Reverse Current, Short-Circuit and Thermal
Protection
• NTC Thermistor Input
• Proprietary Start Up Sequence Limits Inrush
Current
• Status Indication – Charging/Done, Power
Good
• Small 3 mm × 3 mm 16 Lead QFN Package
DESCRIPTION
The bq24075-Q1 device is integrated Li-ion linear
charger and system power path management device
targeted at space-limited portable applications. The
device operate from either a USB port or AC adapter
and support charge currents up to 1.5A. The input
voltage range with input overvoltage protection
supports unregulated adapters. The USB input
current limit accuracy and start up sequence allow
the bq24075-Q1 to meet USB-IF inrush current
specification. Additionally, the input dynamic power
management (V_IN-DPM) prevents the charger from
crashing incorrectly configured USB sources.
The bq24075-Q1 features dynamic power path
management (DPPM) that powers the system while
simultaneously and independently charging the
battery. The DPPM circuit reduces the charge current
when the input current limit causes the system output
to fall to the DPPM threshold; thus, supplying the
system load at all times while monitoring the charge
current separately. This feature reduces the number
of charge and discharge cycles on the battery, allows
for proper charge termination and enables the system
to run with a defective or absent battery pack.
Typical Application Circuit
1kW
1kW
IN
1mF
System
ON/OFF
Control
IN
13
bq24075-Q1
8 _VSS
15 SYSOFF
OUT 10
11
EN 2 5
BAT 2
3
TS ¹
4.7mF
SYSTEM
4.7mF
TEMP
PACK+
1.18kW 1.13kW
PACK-
APPLICATIONS
• Automotive
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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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated