RT7262AZQW Equivalent & Substitute Parts

Part Overview

The RT7262AZQW is an active buck switching regulator IC manufactured by Richtek USA Inc., classified as a Power Management (PMIC) component. This device functions as a step-down converter with positive adjustable output, delivering 2A maximum output current across a single output channel. The part is currently in active product status with 2004 units available in inventory.

Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application requirements where the primary part may be unavailable or where alternative electrical characteristics better suit specific circuit implementations.

Substiute Parts

RT7262AZQW

Richtek USA Inc.In Stock: 2018RT7262AZQW Datasheet

Current PartRFQ

LT3681EDE#PBF

Analog Devices Inc.In Stock: 2473LT3681EDE#PBF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RT7262AZQW are identified based on the following critical electrical and mechanical parameters:

• Topology & Function: Buck switching regulator with step-down conversion capability
• Output Configuration: Positive adjustable output with single output channel
• Output Current Rating: 2A maximum output current
• Package Compatibility: 14-WFDFN Exposed Pad surface mount package
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Input Voltage Range: Minimum 4.5V to maximum 21V
• Output Voltage Adjustability: Minimum 0.808V to maximum 15V
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The LT3681EDE#PBF from Analog Devices Inc. qualifies as a substitute based on matching topology, output current rating, package form factor, operating temperature range, and regulatory compliance status. Differences in input voltage range, output voltage range, switching frequency, and synchronous rectifier implementation are noted for engineering evaluation.

Parameter Comparison

Engineering Selection Recommendations

Both the RT7262AZQW and LT3681EDE#PBF maintain active product status with full ROHS3 compliance and REACH unaffected regulatory standing. Selection between these parts depends on application-specific requirements:

The RT7262AZQW features a synchronous rectifier topology with fixed 500kHz switching frequency and operates within a 4.5V to 21V input range with 0.808V minimum output voltage capability.

The LT3681EDE#PBF provides extended input voltage range (3.6V to 34V), higher maximum output voltage (20V), programmable switching frequency (300kHz to 2.8MHz), and superior moisture sensitivity rating (MSL 1 vs. MSL 3). The absence of synchronous rectification in the LT3681EDE#PBF may result in different efficiency characteristics at specific operating points.

Component selection should be based on circuit input voltage requirements, desired output voltage range, switching frequency constraints, and thermal management considerations specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the LT3681EDE#PBF directly replace the RT7262AZQW in existing designs?

A: Both parts share identical package form factor (14-WFDFN Exposed Pad), surface mount mounting type, and 2A output current rating. However, differences in minimum output voltage (0.808V vs. 1.265V), input voltage range (4.5V-21V vs. 3.6V-34V), and synchronous rectifier implementation require circuit evaluation. PCB layout and external component values may require adjustment.

Q: What are the key differences in electrical performance?

A: The RT7262AZQW integrates synchronous rectification for improved efficiency at lower output voltages, operates at fixed 500kHz switching frequency, and supports output voltages as low as 0.808V. The LT3681EDE#PBF offers programmable switching frequency (300kHz to 2.8MHz), extended input voltage range to 34V, and higher maximum output voltage (20V), but lacks synchronous rectification.

Q: Are there packaging or handling differences?

A: The RT7262AZQW is supplied in Cut Tape (CT) and Digi-Reel packaging with MSL 3 rating (168 hours). The LT3681EDE#PBF is supplied in Tube packaging with MSL 1 rating (unlimited). MSL 1 indicates superior moisture resistance and longer shelf life without baking requirements.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the RT7262AZQW and LT3681EDE#PBF are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory standards for industrial and commercial applications.

Q: Which part should be selected for new designs?

A: Selection depends on specific application requirements. For applications requiring output voltages below 1.265V or fixed 500kHz operation with synchronous efficiency, the RT7262AZQW is appropriate. For applications requiring extended input voltage range, programmable frequency, or higher output voltage capability, the LT3681EDE#PBF is suitable.