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TPS5405

The Texas Instruments TPS5405 is a monolithic non-synchronous buck regulator offering a fixed 5V output and up to 2A of continuous output current. It operates over a wide input voltage range of 6.5V to 28V.

✓ Total Stock: 113,000 pcs

$ Price Range: $1.08

TPS5405 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	113,000 pcs On Request	113000 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

TPS5405 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	93 %
Output Current	2 A
Output Voltage	5 V
SVHC Present	Not Present
Tape & Reel	True

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TPS5405 Description

Short technical summary and product information.

The TPS5405 from Texas Instruments is a non-synchronous step-down (buck) regulator designed for a wide input voltage range of 6.5V to 28V. It provides a fixed 5V output voltage and can deliver up to 2A of maximum continuous output current. This device integrates a MOSFET, simplifying the design and reducing component count.

Key features include a pulse skipping mode for improved light-load efficiency and an adjustable switching frequency from 50kHz to 1.1MHz, which can be set using an external resistor. The TPS5405 also incorporates peak current-mode control and cycle-by-cycle over-current protection for robust operation. It is available in an 8-pin SOIC package.

This regulator is suitable for various applications, including distributed power systems, consumer electronics like set-top boxes and LCD displays, and industrial power supplies. Its design considerations include EMI reduction through frequency spread spectrum operation and anti-ringing features on the switching node.

TPS5405 Quick Information

Product Type: DC DC Switching Regulator

Canonical Name: TPS5405 Non-Synchronous Step-Down Regulator

Subcategory: Voltage Regulators

TPS5405 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

TPS5405 Estimated Pricing

Qty	Low	High
1+	$1.08	$1.08

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

TPS5405 Features

Fixed 5V output voltage.
Wide 6.5V to 28V input voltage range.
Up to 2A maximum continuous output current.
Pulse skipping mode for light-load efficiency.
Adjustable switching frequency from 50kHz to 1.1MHz.

TPS5405 Applications

Suitable for 5V rail generation in industrial systems.
Ideal for point-of-load regulation in embedded designs.
Used in systems requiring wide temperature range operation.
Applicable for distributed power architectures.
Perfect for battery-powered applications requiring low quiescent current.

TPS5405 FAQs

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

What is the input voltage range of the TPS5405?

6.5V to 28V.

What is the output voltage and current?

Fixed 5V output, up to 2A continuous.

What is the switching frequency range?

Adjustable from 50kHz to 1.1MHz via external resistor; leaving ROSC pin floating sets 120kHz.

What is the operating temperature range?

-40°C to 125°C.

What package does the TPS5405 come in?

SOIC-8 package with 29.4mm² footprint (4.9mm x 6mm).

What is the typical quiescent current?

100µA (0.0001A).

What is the maximum duty cycle?

93%.