TPS65090 Datasheet, PDF (1/69 Pages) Texas Instruments – Front-End PMU With Switched-Mode Charger for 2 to 3 Cells In Series

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TPS65090
SLVSBO6B – JANUARY 2013 – REVISED JULY 2015
TPS65090 Front-End PMU With Switched-Mode Charger for 2 to 3 Cells In Series
1 Features
•1 Wide Input Voltage Charger and Power Path
Management:
– V_IN Range From 6 V to 17 V
– Up to 4-A Output Current on the Power Path
– Switched-Mode Charger; up to 4-A Maximum
Charge Current
– JEITA Compliant Charging Control
– Thermal Regulation, Safety Timers
– 2 Temperature Sense Inputs
• 3 Step-Down Converters:
– High Efficiency Over a Wide Output Current
Range
– V_IN Range From 6 V to 17 V
– 2 Fixed Output Voltages (5 V and 3.3 V)
– Up to 5 A of Continuous Output Current
– 1 Adjustable Output Voltage (From 1 V to 5 V)
– Up to 4 A of Continuous Output Current
– Output Voltage Accuracy ±1%
– Typical 30-μA Quiescent Current Per
Converter
• 2 Always-On LDOs:
– 2 Fixed Output Voltages (5 V and 3.3 V)
– Output Voltage Accuracy ±1%
– Typical 10-μA Quiescent Current per LDO
• 7 Current-Limited Load Switches:
– One System Voltage Switch With 1-A Current
Limit
– One 5-V Switch With 200-mA Current Limit,
Reverse-Voltage Protected
– One 3.3-V Switch With 3-A Current Limit
– Four 3.3-V Switches With 1-A Current Limit
– All Switches Controlled by I²C Interface
• I²C Interface
– Standard-Mode (100 kHz) Supported
– Fast-Mode (400 kHz) Supported
– Fast-Mode Plus (1000 kHz) Supported
– High-Speed (3.4 MHz) Supported
• 16-Channel, 10-Bit Analog-to-Digital Converter
(ADC)
• Available in a 9-mm × 9-mm, VQFN-100 Package
2 Applications
• Battery-Powered Products Using 2 to 3 Li-Cells in
Series
• Notebook Computers
• Mobile PCs and Mobile Internet Devices
• Industrial Metering Equipment
• Personal Medical Products
3 Description
The TPS65090A device is a single-chip power
management IC for portable applications consisting of
a battery charger with power path management for a
dual or triple Li-Ion or Li-Polymer cell battery pack.
The charger can be directly connected to an external
wall adapter. Three highly efficient step-down
converters are targeted for providing a fixed 5-V
system voltage, a fixed 3.3-V system voltage, and an
adjustable voltage rail. The step-down converters
enter a low power mode at light load for maximum
efficiency across the widest possible range of load
currents. The step-down converters allow the use of
small inductors and capacitors to achieve a small
solution size. The TPS65090A also integrates two
general-purpose always-on LDOs for powering circuit
blocks which control the system while shut down.
Each LDO operates with an input voltage range from
6 V to 17 V, allowing the LDOs to be supplied from
the wall adapter or directly from the main battery
pack.
Seven load switches are built into the device. These
load switches can be used to control the power
supply individually for certain circuit blocks in the
application circuit. The current flowing through the
load switches, as well as the output current of the
step-down converters, the input current from the AC
adapter and the charge current is monitored and can
be read out using the digital interface.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS65090A
VQFN-MR (100)
9.00 mm × 9.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
VSYSx
CIN
ENx
DC-DC Block Diagram
DCDCx
Step-Down Converter
Control
CBx
CB
Lx
L
VDCDCx
FBx
PGNDx
VDCDCx
RFB1
COUT
RFB2
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. PRODUCTION DATA.