TPS54418A

Name: TPS54418A
Brand: TI
SKU: TPS54418A
Price: 1.186 USD

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Synchroner SWIFT™-Abwärtswandler, 2,95 V bis 6 V Eingangsspannung, 4 A

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Datenblatt

document-pdfAcrobat TPS54418A 2.95-V to 6-V Input, 4-A Synchronous Step-Down SWIFT™ Converter datasheet (Rev. B) (Englisch)

TPS54418A

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Topology

Buck

Iout (max) (A)

4

Vin (max) (V)

6

Vin (min) (V)

2.95

Vout (max) (V)

4.5

Vout (min) (V)

0.8

Features

Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable

Control mode

current mode

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

2000

Operating temperature range (°C)

-40 to 150

Iq (typ) (µA)

350

Duty cycle (max) (%)

98

Type

Converter

Rating

Catalog

Topology

Buck

Iout (max) (A)

4

Vin (max) (V)

6

Vin (min) (V)

2.95

Vout (max) (V)

4.5

Vout (min) (V)

0.8

Features

Enable, Frequency synchronization, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable

Control mode

current mode

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

2000

Operating temperature range (°C)

-40 to 150

Iq (typ) (µA)

350

Duty cycle (max) (%)

98

Type

Converter

WQFN (RTE)

16

9 mm² 3 x 3

Two, 30-mΩ (typical) MOSFETs for High-Efficiency at 4-A Loads
Switching Frequency: 200 kHz to 2 MHz
Voltage Reference Over Temperature: 0.8 V ± 1%
Synchronizes to External Clock
Adjustable Soft Start/Sequencing
UV and OV Power-Good Output
Low Operating and Shutdown Quiescent Current
Safe Start-up into Prebiased Output
Cycle-by-Cycle Current Limit, Thermal and Frequency Foldback Protection
Operating Junction Temperature Range: –40°C to +150°C
Thermally Enhanced 3 mm × 3 mm 16-pin WQFN Package

Two, 30-mΩ (typical) MOSFETs for High-Efficiency at 4-A Loads
Switching Frequency: 200 kHz to 2 MHz
Voltage Reference Over Temperature: 0.8 V ± 1%
Synchronizes to External Clock
Adjustable Soft Start/Sequencing
UV and OV Power-Good Output
Low Operating and Shutdown Quiescent Current
Safe Start-up into Prebiased Output
Cycle-by-Cycle Current Limit, Thermal and Frequency Foldback Protection
Operating Junction Temperature Range: –40°C to +150°C
Thermally Enhanced 3 mm × 3 mm 16-pin WQFN Package

TheTPS54418A device is a full-featured 6-V, 4-A, synchronous, step-down, current mode converter with two integrated MOSFETs.

The TPS54418A device enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the device footprint with a small, 3 mm × 3 mm, thermally enhanced, QFN package.

The TPS54418A device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (V_REF) over temperature.

Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage start-up ramp is controlled by the soft-start pin. An open-drain power good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition.

For more SWIFT™ documentation, see the TI website at www.ti.com/swift.

TheTPS54418A device is a full-featured 6-V, 4-A, synchronous, step-down, current mode converter with two integrated MOSFETs.

The TPS54418A device enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by enabling up to 2-MHz switching frequency, and minimizing the device footprint with a small, 3 mm × 3 mm, thermally enhanced, QFN package.

The TPS54418A device provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (V_REF) over temperature.

Efficiency is maximized through the integrated 30-mΩ MOSFETs and a 350-µA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

Undervoltage lockout is internally set at 2.6 V, but can be increased by programming the threshold with a resistor network on the enable pin. The output voltage start-up ramp is controlled by the soft-start pin. An open-drain power good signal indicates the output is within 93% to 107% of its nominal voltage. Frequency foldback and thermal shutdown protects the device during an overcurrent condition.

For more SWIFT™ documentation, see the TI website at www.ti.com/swift.

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	Typ	Titel		Datum
*	Data sheet	TPS54418A 2.95-V to 6-V Input, 4-A Synchronous Step-Down SWIFT™ Converter datasheet (Rev. B)		17 Apr 2018

Design und Entwicklung

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Gehäuse	Pins	CAD-Symbole, Footprints und 3D-Modelle
WQFN (RTE)	16	Ultra Librarian

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TPS54418A

Synchroner SWIFT™-Abwärtswandler, 2,95 V bis 6 V Eingangsspannung, 4 A

TPS54418A

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