Low Input Voltage 3A Synchronous Buck Converter With Disabled Sinking During Start Up

As a member of the SWIFT? family of DC/DC Regulators the TPS54373 low-input voltage high-output current synchronous buck PWM converter integrates all required active components. Included on the substrate with the listed features are a true, high performance, voltage error Amplifier that enables maximum performance and flexibility in choosing the output Filter L and C components; an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 3 V; an internally or externally set slow-start circuit to limit in-rush currents; and a power good output useful for processor Logic reset, fault signaling, and supply sequencing.
For reliable power up in output precharge applications, the TPS54373 is designed to only source current during start-up.
The TPS54373 is available in a thermally enhanced 20-pin TSSOP (PWP) PowerPAD? package, which eliminates bulky heatsinks. TI provides evaluation modules and the SWIFT? designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
TPS54373PWP Texas Instruments 3V to 6V Input, 3A Synchronous Step-Down SWIFT™ Converter for Prebiased Outputs 20-HTSSOP -40 to 85
TPS54373PWPG4 Texas Instruments 3V to 6V Input, 3A Synchronous Step-Down Converter with Disabled Sinking During Start Up 20-HTSSOP -40 to 85
TPS54373PWPR Texas Instruments 3V to 6V Input, 3A Synchronous Step-Down SWIFT™ Converter for Prebiased Outputs 20-HTSSOP -40 to 85
TPS54373PWPRG4 Texas Instruments 3V to 6V Input, 3A Synchronous Step-Down SWIFT™ Converter for Prebiased Outputs 20-HTSSOP -40 to 85
TPS54373 's PackagesTPS54373 's pdf datasheet
TPS54373PWP HTSSOP
TPS54373PWPG4 HTSSOP
TPS54373PWPR HTSSOP
TPS54373PWPRG4 HTSSOP




TPS54373 Pinout, Pinouts
TPS54373 pinout,Pin out
This is one package pinout of TPS54373,If you need more pinouts please download TPS54373's pdf datasheet.

TPS54373 Application circuits
TPS54373 circuits
This is one application circuit of TPS54373,If you need more circuits,please download TPS54373's pdf datasheet.


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