TPS650250-Q1 Datasheet, PDF (1/32 Pages) Texas Instruments – POWER MANAGEMENT IC FOR LI-ION POWERED SYSTEMS

TPS650250-Q1
www.ti.com
SLVSAA7 – MARCH 2010
POWER MANAGEMENT IC FOR LI-ION POWERED SYSTEMS
Check for Samples: TPS650250-Q1
FEATURES
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• Qualified for Automotive Applications
• 1.6A, 97% Efficient Step-Down Converter for
System Voltage (VDCDC1)
– 3.3V or 2.8V or Adjustable
• 0.8A, up to 95% Efficient Step-Down Converter
for Memory Voltage (VDCDC2)
– 1.8V or 2.5V or Adjustable
• 0.8A, 90% Efficient Step-Down Converter for
Processor Core (VDCDC3)
• Adjustable Output Voltage on VDCDC3
• 30mA LDO for Vdd_alive
• 2 × 200mA General Purpose LDOs (LDO1 and
LDO2)
• Dynamic Voltage Management for Processor
Core
• LDO1 and LDO2 Voltage Externally Adjustable
• Separate Enable Pins for Inductive Converters
• 2.25MHz Switching Frequency
• 85mA Quiescent Current
• Thermal Shutdown Protection
DESCRIPTION
The TPS650250 is an integrated Power Management IC for applications powered by one Li-Ion or Li-Polymer
cell, which require multiple power rails. The TPS650250 provides three highly efficient, step-down converters
targeted at providing the core voltage, peripheral, I/O and memory rails in a processor based system. All three
step-down converters enter a low power mode at light load for maximum efficiency across the widest possible
range of load currents. The converters can be forced into fixed frequency PWM mode by pulling the MODE pin
high.
The TPS650250 also integrates two general purpose 200mA LDO voltage regulators, which are enabled with an
external input pin. Each LDO operates with an input voltage range between 1.5V and 6.5V allowing them to be
supplied from one of the step-down converters or directly from the battery. The output voltage of the LDOs can
be set with an external resistor divider for maximum flexibility. Additionally there is a 30mA LDO typically used to
provide power in a processor based system to a voltage rail that is always on. TPS650250 comes in a small
5mm x 5mm 32-pin QFN package (RHB).
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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 © 2010, Texas Instruments Incorporated