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

Rating

Catalog

Operating temperature range (°C)

-40 to 150

Topology

Buck

Type

Converter

Iout (max) (A)

5

Vin (min) (V)

4.5

Vin (max) (V)

42

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

Iq (typ) (µA)

146

Duty cycle (max) (%)

98

Rating

Catalog

Operating temperature range (°C)

-40 to 150

Topology

Buck

Type

Converter

Iout (max) (A)

5

Vin (min) (V)

4.5

Vin (max) (V)

42

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

Iq (typ) (µA)

146

Duty cycle (max) (%)

98

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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