TPS650240_0712 Datasheet, PDF (1/33 Pages) Texas Instruments – Power Management ICs for Li-Ion Powered Systems

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TPS650240, TPS650241
TPS650242, TPS650243
TPS650244, TPS650245
SLVS774A – JUNE 2007 – REVISED DECEMBER 2007
Power Management ICs for Li-Ion Powered Systems
FEATURES
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• 1.6A, 1.0A or 0.8A, 97% Efficient Step-Down
Converter for System Voltage (VDCDC1)
– 3.3V or 2.80V or Adjustable
• 1.6A, 1.0A or 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)
• Two Selectable Voltages for VDCDC3
– TPS650240:
– DEFDCDC3= LOW: V_O = 1.0V
– DEFDCDC3= HIGH: V_O = 1.3V
– TPS650241:
– DEFDCDC3= LOW: V_O = 0.9V
– DEFDCDC3= HIGH: V_O= 1.375V
– TPS650242:
– DEFDCDC3= LOW: V_O = 1.0V
– DEFDCDC3= HIGH: V_O = 1.5V
– TPS650243:
– DEFDCDC3= LOW: V_O = 1.0V
– DEFDCDC3= HIGH: V_O = 1.2V
– TPS650244:
– DEFDCDC3= LOW: V_O = 1.55V
– DEFDCDC3= HIGH: V_O = 1.6V
– TPS650245:
– DEFDCDC3= LOW: V_O = 0.9V
– DEFDCDC3= HIGH: V_O = 1.1V
• 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
• 85µA Quiescent Current
• Thermal Shutdown Protection
APPLICATIONS
• PDA
• Cellular/Smart Phone
• GPS
• Digital Still Camera
• Split Supply DSP and µP Solutions:, Samsung
ARM-Based Processors, etc.
DESCRIPTION
The TPS65024x are integrated Power Management
ICs for applications powered by one Li-Ion or
Li-Polymer cell, which require multiple power rails.
The TPS65024x provide 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 TPS65024x also integrate 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. TPS65024x provide
voltage scaling on DCDC3 using the DEFDCDC3 pin.
This pin either needs to be connected to a logic HIGH
or logic LOW level to set the output voltage of
DCDC3. TPS65024x come 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 © 2007, Texas Instruments Incorporated