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TPS54318

The Texas Instruments TPS54318 is a 3A synchronous step-down DC DC switching regulator. It operates with an input voltage range of 2.95V to 6V and supports an output voltage range of 0.8V to 4.5V.

✓ Total Stock: 120,533 pcs

$ Price Range: $1.08

TPS54318 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	120,533 pcs On Request	120533 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

TPS54318 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Texas Instruments
Duty Cycle	98%
Mounting Type	Surface Mount
Operating Voltage	2.95 V to 6 V
Output Current	3 A
Output Voltage	0.8 V to 4.5 V
Voltage Reference	0.8 V ± 1%

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TPS54318 Description

Short technical summary and product information.

The TPS54318 from Texas Instruments is a full-featured, 6-V, 3-A synchronous step-down current-mode converter with integrated MOSFETs. This device is designed to enable small power system designs by integrating MOSFETs, utilizing current-mode control for reduced component count, and supporting up to 2-MHz switching frequency for smaller inductor sizes.

The converter features two 30-mΩ MOSFETs for high efficiency at 3-A loads. It offers a wide input voltage range of 2.95 V to 6 V and an adjustable output voltage from 0.8 V to 4.5 V. The switching frequency can be set between 200 kHz and 2 MHz, with a typical operating quiescent current of 350 µA, reducing to 2 µA in shutdown mode. The operating junction temperature range is -40°C to 150°C.

Key features include a ±1% voltage reference over temperature, synchronization to an external clock, adjustable soft-start and sequencing, and UV/OV power-good output. Protection mechanisms include cycle-by-cycle current limit, thermal shutdown, and frequency foldback. The device is housed in a thermally enhanced 3 mm x 3 mm 16-pin WQFN package, suitable for surface mounting.

Applications include low-voltage, high-density power systems and point-of-load regulation for high-performance DSPs, FPGAs, ASICs, and microprocessors in broadband, networking, and optical communications infrastructure.

TPS54318 Quick Information

Product Type: DC DC Switching Regulator

Series: SWIFT

Canonical Name: TPS54318 2.95-V to 6-V Input, 3-A Output, 2-MHz Synchronous Step-Down SWIFT Converter

Subcategory: Voltage Regulators

TPS54318 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

TPS54318 Estimated Pricing

Qty	Low	High
1+	$1.08	$1.08

Estimated market price range - modelled values for guidance only, not live distributor offers.

TPS54318 Features

Integrated 30-mΩ MOSFETs for high efficiency.
Switching frequency from 200 kHz to 2 MHz.
Accurate 0.8 V ± 1% voltage reference.
Adjustable soft start and sequencing.
Operating temperature range -40°C to 150°C.

TPS54318 Applications

Low-voltage, high-density power systems.
Point-of-load regulation for DSPs.
Point-of-load regulation for FPGAs.
Point-of-load regulation for ASICs.
Networking and optical communications infrastructure.

TPS54318 FAQs

7 frequently asked questions generated from this part’s specifications.

What is the input voltage range of the TPS54318?

2.95V to 6V.

What package is the TPS54318 available in?

16-pin WQFN (3mm x 3mm) with exposed pad.

What is the operating temperature range?

-40°C to 150°C junction temperature.

What is the maximum output current?

3A.

What is the switching frequency range?

200kHz to 2MHz.

What is the output voltage range?

0.8V to 4.5V.

What is the quiescent current?

350µA typical operating, 2µA shutdown.