TPS54540B

Name: TPS54540B
Brand: TI
SKU: TPS54540B
Price: 2.033 USD

ACTIVO

Convertidor reductor de 5 A, entrada de 4.5 V a 42 V, con Eco-Mode™

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Hoja de datos

document-pdfAcrobat TPS54540B 4.5-V to 42-V Input, 5-A step-down dc/dc converter with Eco-mode™ datasheet (Inglés) PDF | HTML

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TPS54540B

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Detalles del producto

Iout (max) (A)

5

Vin (min) (V)

4.5

Vin (max) (V)

42

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

100

Switching frequency (max) (kHz)

2500

Features

Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, Wettable flanks package

Control mode

current mode

Vout (min) (V)

0.8

Vout (max) (V)

41.1

Rating

Catalog

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.000146

Iout (max) (A)

5

Vin (min) (V)

4.5

Vin (max) (V)

42

Topology

Buck

Type

Converter

Switching frequency (min) (kHz)

100

Switching frequency (max) (kHz)

2500

Features

Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Pre-Bias Start-Up, Soft Start Fixed, Wettable flanks package

Control mode

current mode

Vout (min) (V)

0.8

Vout (max) (V)

41.1

Rating

Catalog

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.000146

HSOIC (DDA)

8

29.4 mm² 4.9 x 6

High efficiency at light loads with pulse skipping Eco-mode™
92-mΩ high-side MOSFET
146-µA operating quiescent current and
2-µA shutdown current
100-kHz to 2.5-MHz Fixed switching frequency
Synchronizes to external clock
Low dropout at light loads with integrated BOOT recharge FET
Adjustable UVLO and hysteresis
0.8 V 1% Internal voltage reference
8-Pin HSOIC with PowerPAD™ package
–40°C to 150°C T_J operating range
Create a custom design using the TPS54540B with the WEBENCH® Power Designer

High efficiency at light loads with pulse skipping Eco-mode™
92-mΩ high-side MOSFET
146-µA operating quiescent current and
2-µA shutdown current
100-kHz to 2.5-MHz Fixed switching frequency
Synchronizes to external clock
Low dropout at light loads with integrated BOOT recharge FET
Adjustable UVLO and hysteresis
0.8 V 1% Internal voltage reference
8-Pin HSOIC with PowerPAD™ package
–40°C to 150°C T_J operating range
Create a custom design using the TPS54540B with the WEBENCH® Power Designer

The TPS54540B is a 42-V, 5-A step-down regulator with an integrated high side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces no-load-supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the EN (enable) pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using the EN pin. Output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot.

A wide switching frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54540B is available in an 8-pin thermally enhanced HSOIC PowerPAD package.

The TPS54540B is a 42-V, 5-A step-down regulator with an integrated high side MOSFET. Current-mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces no-load-supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the EN (enable) pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using the EN pin. Output voltage start-up ramp is internally controlled to provide a controlled start-up and eliminate overshoot.

A wide switching frequency range allows either efficiency or external component size to be optimized. Output current is limited cycle-by-cycle. Frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54540B is available in an 8-pin thermally enhanced HSOIC PowerPAD package.

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Documentación técnica

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	Tipo	Título		Fecha
*	Data sheet	TPS54540B 4.5-V to 42-V Input, 5-A step-down dc/dc converter with Eco-mode™ datasheet	PDF \| HTML	24 ene 2019
	Application note	NRND & Differences TPS54340/360/540/560 and TPS54340B/360B/540B/560B		05 abr 2019

Diseño y desarrollo

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