TPS54340B

現行

具有 Eco-mode™ 的 42V 輸入、3.5A 降壓 DC/DC 轉換器

立即訂購

產品規格表

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

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功能相同，但針腳輸出與所比較的裝置不同。

LM60440

現行

採用增強型 EMI QFN 封裝，具有可潤濕側翼和外部墊片的 36-V、4-A 同步轉換器 Smaller footprint, higher efficiency and lower IQ.

TPS54340B

現行

產品規格表

立即訂購

產品詳細資料

Rating

Catalog

Topology

Buck

Iout (max) (A)

3.5

Vin (max) (V)

42

Vin (min) (V)

4.5

Vout (max) (V)

41.1

Vout (min) (V)

0.8

Features

Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, UVLO adjustable

Control mode

current mode

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.000146

Duty cycle (max) (%)

98

Rating

Catalog

Topology

Buck

Iout (max) (A)

3.5

Vin (max) (V)

42

Vin (min) (V)

4.5

Vout (max) (V)

41.1

Vout (min) (V)

0.8

Features

Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, UVLO adjustable

Control mode

current mode

Operating temperature range (°C)

-40 to 150

Iq (typ) (A)

0.000146

Duty cycle (max) (%)

98

HSOIC (DDA)

8

29.4 mm² (4.9 mm × 6 mm)

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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