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TPS40003TIN/a4avaiLow Input Voltage Mode Synchronous Buck Controller
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TPS40003DGQR ,Low Input Voltage Mode Synchronous Buck Controllermaximum ratings” may cause permanent damage to the device. These are stress ratings only,and functi ..
TPS40003DGQRG4 ,Low Input Voltage Mode Synchronous Buck Controller 10-MSOP-PowerPAD -40 to 85ELECTRICAL CHARACTERISTICSover recommended operating temperature range, T = −40C to 85C, V = 5.0 ..
TPS40004DGQ ,Low Input (2.25V-5.5V) 300 kHz Frequency, Synchronous Buck Controller, Source/ SinkFEATURES APPLICATIONS Operating Input Voltage 2.25 V to 5.5 V  Networking Equipment Output Volta ..
TPS40004DGQR ,Low Input (2.25V-5.5V) 300 kHz Frequency, Synchronous Buck Controller, Source/ SinkELECTRICAL CHARACTERISTICSover recommended operating temperature range, T = −40C to 85C, V = 5.0 ..
TPS40004DGQR ,Low Input (2.25V-5.5V) 300 kHz Frequency, Synchronous Buck Controller, Source/ SinkELECTRICAL CHARACTERISTICSover recommended operating temperature range, T = −40C to 85C, V = 5.0 ..
TPS40007DGQ ,Low Input (2.25V-5.5V) 300 kHz Frequency, Synchronous Buck Controller, Source/ Sink, Prebias OperatiELECTRICAL CHARACTERISTICStemperature range, T = −40C to 85C, V = 5.0 V, T = T ; all parameters m ..
TSB21LV03C ,IEEE 1394-1995 TRIPLE-CABLE TRANSCEIVER/ARBITER
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TSB41AB1GQE ,IEEE 1394a One-Port Cable Transceiver/ArbiterFeatures Single 3.3-V Supply Operation IEEE 1394a-2000 Compliant Common ModeNoise Filter on Incom ..
TSB41AB1PAP ,IEEE 1394a One-Port Cable Transceiver/ArbiterFeatures Single 3.3-V Supply Operation IEEE 1394a-2000 Compliant Common ModeNoise Filter on Incom ..
TSB41AB1PHP ,IEEE 1394a One-Port Cable Transceiver/ArbiterFeatures Single 3.3-V Supply Operation IEEE 1394a-2000 Compliant Common ModeNoise Filter on Incom ..
TSB41AB1PHPG4 ,IEEE 1394a One-Port Cable Transceiver/Arbiter 48-HTQFP 0 to 70      SLLS423I − JUNE 2000 − REVISED MARCH 2005 F ..


TPS40003-TPS40003DGQ-TPS40003DGQG4-TPS40003DGQR-TPS40003DGQRG4
Low Input Voltage Mode Synchronous Buck Controller
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SLUS507D − JANUARY 2002 − REVISED NOVEMBER 2005
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FEATURES
Operating Input Voltage 2.25 V to 5.5 V Output Voltage as Low as 0.7 V 1% Internal 0.7 V Reference Predictive Gate Drive� N-Channel MOSFET
Drivers for Higher Efficiency
Externally Adjustable Soft-Start and
Overcurrent Limit
Source-Only Current or Source/Sink Current Versions for Starting Into VOUT Pre-Bias 10-Lead MSOP PowerPad� Package for
Higher Performance
Thermal Shutdown Internal Boostrap Diode Fixed-Frequency, Voltage-Mode Control
− TPS40000/1/4 300-kHz
− TPS40002/3/5 600-kHz
SIMPLIFIED APPLICATION DIAGRAM
APPLICATIONS
Networking Equipment Telecom Equipment Base Stations Servers DSP Power Power Modules
DESCRIPTION
The TPS4000x are controllers for low-voltage,
non-isolated synchronous buck regulators. These
controllers drive an N-channel MOSFET for the
primary buck switch, and an N-channel MOSFET
for the synchronous rectifier switch, thereby
achieving very high-efficiency power conversion. In
addition, the device controls the delays from main
switch off to rectifier turn-on and from rectifier
turn-off to main switch turn-on in such a way as to
minimize diode losses (both conduction and
recovery) in the synchronous rectifier with TI’s
proprietary Predictive Gate Drive� technology. The
reduction in these losses is significant and increases
efficiency. For a given converter power level, smaller
FETs can be used, or heat sinking can be reduced
or even eliminated.
UDG−01141
VIN
VOUT
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