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TPS40009DGQTIN/a322avaiLow Input (2.25V-5.5V) 600 kHz Frequency, Synchronous Buck Controller, Source/ Sink, Prebias Operati
TPS40009DGQRTIN/a2005avaiLow Input (2.25V-5.5V) 600 kHz Frequency, Synchronous Buck Controller, Source/ Sink, Prebias Operati
TPS40009DGQRG4TIN/a29avaiLow Input (2.25V-5.5V) 600 kHz Frequency, Synchronous Buck Controller, Source/ Sink, Prebias Operati 10-MSOP-PowerPAD -40 to 85


TPS40009DGQR ,Low Input (2.25V-5.5V) 600 kHz Frequency, Synchronous Buck Controller, Source/ Sink, Prebias OperatiELECTRICAL CHARACTERISTICStemperature range, T = −40C to 85C, V = 5.0 V, T = T ; all parameters m ..
TPS40009DGQRG4 ,Low Input (2.25V-5.5V) 600 kHz Frequency, Synchronous Buck Controller, Source/ Sink, Prebias Operati 10-MSOP-PowerPAD -40 to 85FEATURES APPLICATIONS Operating Input Voltage 2.25 V to 5.5 V  Networking Equipment Output Volta ..
TPS40021PWP ,Enhanced Low Input (2.25V-5.5V) up to 1MHz Frequency, Sync. Buck Controller, source/sinkSLUS535D − MARCH 2003 − REVISED JULY 2007DESCRIPTION (CONTINUED)The short circuit current detection ..
TPS40021PWPR ,Enhanced Low Input (2.25V-5.5V) up to 1MHz Frequency, Sync. Buck Controller, source/sinkFEATURES DESCRIPTION Operating Input Voltage 2.25 V to 5.5 VThe TPS4002x family of dc-to-dc contro ..
TPS40021PWPRG4 ,ENHANCED LOW INPUT VOLTAGE MODE SYNCHRONOUS BUCK CONTROLLERmaximum ratings” may cause permanent damage to the device. These are stress ratings only,and functi ..
TPS40040DRBR ,Low Pin Count, Low Vin Synchronous Buck DC/DC Controller 8-SON -40 to 85Electrical Characteristics 3• Three Selectable Short Circuit ProtectionDevice Information 8Levels o ..
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 ..
TSB41AB1PHPG4 ,IEEE 1394a One-Port Cable Transceiver/Arbiter 48-HTQFP 0 to 70      SLLS423I − JUNE 2000 − REVISED MARCH 2005 F ..
TSB41AB2 ,IEEE 1394a Two-Port Cable Transceiver/ArbiterFeatures Single 3.3-V Supply Operation IEEE 1394a-2000 Compliant Common ModeNoise Filter on Incom ..
TSB41AB2PAP ,IEEE 1394a Two-Port Cable Transceiver/ArbiterFeatures Single 3.3-V Supply Operation IEEE 1394a-2000 Compliant Common ModeNoise Filter on Incom ..


TPS40009DGQ-TPS40009DGQR-TPS40009DGQRG4
Low Input (2.25V-5.5V) 600 kHz Frequency, Synchronous Buck Controller, Source/ Sink, Prebias Operati
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SLUS589B− NOVEMBER 2003 − REVISED FEBRUARY 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
Fixed-Frequency Voltage-Mode Control
− TPS40007, 300 kHz
− TPS40009, 600 kHz
Source/Sink with VOUT Prebias 10-Lead MSOP PowerPad� Package for
Higher Performance
Thermal Shutdown Internal Boostrap Diode
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−03161
VIN
VOUT
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