TPS54340B

Name: TPS54340B
Brand: TI
SKU: TPS54340B
Price: 1.742 USD

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DC/DC-Abwärtswandler, 42 V, Eingangsspannung, 3,5 A, mit Eco-Mode™

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Datenblatt

document-pdfAcrobat TPS54340B 42-V Input, 3.5-A, Step-Down DC/DC Converter With Eco-Mode™ datasheet (Englisch) PDF | HTML

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Synchroner Wandler mit 36 V und 4 A in einem QFN-Gehäuse mit verbessertem EMI-Verhalten, Wettable Fl Smaller footprint, higher efficiency and lower IQ.

TPS54340B

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Operating temperature range (°C)

-40 to 150

Topology

Buck

Type

Converter

Iout (max) (A)

3.5

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, UVLO adjustable

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)

3.5

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, UVLO adjustable

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

4.5-V to 42-V (45-V Abs Max) Input Range
3.5-A Continuous Current, 4.5-A Minimum Peak Inductor Current Limit
Current Mode Control DC/DC Converter
92-mΩ High-Side MOSFET
High Efficiency at Light Loads with Pulse Skipping Eco-mode™
Low Dropout at Light Loads with Integrated BOOT Recharge FET
146-µA Operating Quiescent Current
2-µA Shutdown Current
100-kHz to 2.5-MHz Fixed Switching Frequency
Synchronizes to External Clock
Adjustable UVLO Voltage and Hysteresis
Internal Soft Start
Accurate Cycle-by-Cycle Current Limit
Thermal, Overvoltage, and Frequency Foldback Protection
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 TPS54340B with the WEBENCH® Power Designer

4.5-V to 42-V (45-V Abs Max) Input Range
3.5-A Continuous Current, 4.5-A Minimum Peak Inductor Current Limit
Current Mode Control DC/DC Converter
92-mΩ High-Side MOSFET
High Efficiency at Light Loads with Pulse Skipping Eco-mode™
Low Dropout at Light Loads with Integrated BOOT Recharge FET
146-µA Operating Quiescent Current
2-µA Shutdown Current
100-kHz to 2.5-MHz Fixed Switching Frequency
Synchronizes to External Clock
Adjustable UVLO Voltage and Hysteresis
Internal Soft Start
Accurate Cycle-by-Cycle Current Limit
Thermal, Overvoltage, and Frequency Foldback Protection
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 TPS54340B with the WEBENCH® Power Designer

The TPS54340B is a 42-V, 3.5-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 the no-load supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using the enable pin. The 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. Frequency foldback and thermal shutdown protect internal and external components during an overload condition.

The TPS54340B is available in an 8-pin thermally enhanced HSOIC PowerPAD™ package.

The TPS54340B is a 42-V, 3.5-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 the no-load supply current to 146 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can be increased using the enable pin. The 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. Frequency foldback and thermal shutdown protect internal and external components during an overload condition.

The TPS54340B is available in an 8-pin thermally enhanced HSOIC PowerPAD™ package.

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Alle anzeigen 5

	Typ	Titel		Datum
*	Data sheet	TPS54340B 42-V Input, 3.5-A, Step-Down DC/DC Converter With Eco-Mode™ datasheet	PDF \| HTML	10 Dez 2018
	Application note	NRND & Differences TPS54340/360/540/560 and TPS54340B/360B/540B/560B		05 Apr 2019
	Test report	Test Report for the iPad Automotive Charger		11 Jun 2013
	Application note	Level Shifting Control for an Inverting Buck-boost		10 Okt 2012
	Application note	Creating GSM Power Supply from TPS54260		30 Apr 2010

Design und Entwicklung

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