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Partno Mfg Dc Qty AvailableDescript
TPS51020TIN/a200avaiDual, DDR selectable, Synchronous buck controller
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TPS51020-TPS51020DBT-TPS51020DBTG4-TPS51020DBTR-TPS51020DBTRG4
Dual, DDR selectable, Synchronous buck controller
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SLUS564C − JULY 2003 − REVISED OCTOBER 2008
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FEATURES
Wide Input Voltage Range: 4.5-V to 28-V Selectable Dual and DDR Modes Selectable Fixed Frequency Voltage Mode Advanced Power Good Logic Monitors both
Channels
Selectable Autoskip Mode Integrated Boot Strap Diodes 180° Phase Shift Between Channels Integrated 5-V, 60-mA Regulator Input Feedforward Control 1% Internal 0.85-V Reference RDS(on) Overcurrent Detection (4200 ppm/°C) Integrated OVP, UVP and Power Good Timers 30-pin TSSOP Package

APPLICATIONS
Notebook Computers System Bus and I/O DDR I or DDR II Termination
DESCRIPTION

The TPS51020 is a multi-function dual-
synchronous step-down controller for notebook
system power. The part is specifically designed
for high performance, high efficiency applications
where the loss associated with a current sense
resistor is unacceptable. The TPS51020 utilizes
feed forward voltage mode control to attain high
efficiency without sacrificing line response.
Efficiency at light load conditions can be
maintained high as well by incorporating autoskip
operation. A selectable, Suspend to RAM (STR)
supported, DDR option provides a one chip
solution for all switching applications from
5-V/3.3-V supply to a complete DDR termination
solution.
ORDERING INFORMATION
SIMPLIFIED
APPLICATION
DIAGRAM

UDG−03144
VO1
VIN
VO2
VIN
VO2
VO1
VIN VO1
VO2
VREG5

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.
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