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TPS650244RHBR Datasheet(PDF) 1 Page - Texas Instruments

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Part # TPS650244RHBR
Description  Power Management ICs for Li-Ion Powered Systems
Download  33 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS650244RHBR Datasheet(HTML) 1 Page - Texas Instruments

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FEATURES
APPLICATIONS
DESCRIPTION
TPS650240
,, TPS650241
TPS650242, TPS650243
TPS650244, TPS650245
SLVS774A – JUNE 2007 – REVISED DECEMBER 2007
www.ti.com
Power Management ICs for Li-Ion Powered Systems
• Thermal Shutdown Protection
• 1.6A, 1.0A or 0.8A, 97% Efficient Step-Down
Converter for System Voltage (VDCDC1)
• PDA
3.3V or 2.80V or Adjustable
• Cellular/Smart Phone
• 1.6A, 1.0A or 0.8A, up to 95% Efficient
• GPS
Step-Down Converter for Memory Voltage
• Digital Still Camera
(VDCDC2)
• Split Supply DSP and µP Solutions:, Samsung
1.8V or 2.5V or Adjustable
ARM-Based Processors, etc.
• 0.8A, 90% Efficient Step-Down Converter for
Processor Core (VDCDC3)
• Two Selectable Voltages for VDCDC3
The TPS65024x are integrated Power Management
TPS650240:
ICs for applications powered by one Li-Ion or
DEFDCDC3= LOW: VO = 1.0V
Li-Polymer cell, which require multiple power rails.
The
TPS65024x
provide
three
highly
efficient,
DEFDCDC3= HIGH: VO = 1.3V
step-down converters targeted at providing the core
TPS650241:
voltage, peripheral, I/O and memory rails in a
DEFDCDC3= LOW: VO = 0.9V
processor
based
system.
All
three
step-down
converters enter a low power mode at light load for
DEFDCDC3= HIGH: VO= 1.375V
maximum efficiency across the widest possible range
TPS650242:
of load currents. The converters can be forced into
DEFDCDC3= LOW: VO = 1.0V
fixed frequency PWM mode by pulling the MODE pin
DEFDCDC3= HIGH: VO = 1.5V
high. The TPS65024x also integrate two general
purpose 200mA LDO voltage regulators, which are
TPS650243:
enabled with an external input pin. Each LDO
DEFDCDC3= LOW: VO = 1.0V
operates with an input voltage range between 1.5V
DEFDCDC3= HIGH: VO = 1.2V
and 6.5V allowing them to be supplied from one of
the step-down converters or directly from the battery.
TPS650244:
The output voltage of the LDOs can be set with an
DEFDCDC3= LOW: VO = 1.55V
external
resistor
divider
for
maximum
flexibility.
DEFDCDC3= HIGH: VO = 1.6V
Additionally there is a 30mA LDO typically used to
provide power in a processor based system to a
TPS650245:
voltage rail that is always on. TPS65024x provide
DEFDCDC3= LOW: VO = 0.9V
voltage scaling on DCDC3 using the DEFDCDC3 pin.
DEFDCDC3= HIGH: VO = 1.1V
This pin either needs to be connected to a logic HIGH
or logic LOW level to set the output voltage of
• 30mA LDO for Vdd_alive
DCDC3. TPS65024x come in a small 5mm x 5mm 32
• 2 × 200mA General Purpose LDOs (LDO1 and
pin QFN package (RHB).
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
1
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.
Copyright © 2007, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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