LM2736YMK Buck Switching Regulator IC

Part Overview

The LM2736YMK is a buck switching regulator IC manufactured by Texas Instruments, designed for step-down voltage conversion applications. This device delivers positive adjustable output from 1.25V to 16V with a maximum output current of 750mA, operating across an input voltage range of 3V to 18V. The LM2736YMK is classified as Last Time Buy, indicating discontinued production status. Alternative part sourcing becomes necessary due to inventory depletion and the transition to active production variants.

Substiute Parts

LM2736YMK

Texas InstrumentsIn Stock: 7541LM2736YMK Datasheet

Current PartRFQ

LM2736YMK/NOPB

Texas InstrumentsIn Stock: 25307LM2736YMK/NOPB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The LM2736YMK/NOPB qualifies as a direct substitute based on identical electrical and mechanical parameters. Substitution criteria are determined by the following key parameters:

• Input voltage range: 3V to 18V
• Output voltage adjustability: 1.25V to 16V
• Output current capacity: 750mA
• Switching frequency: 550kHz
• Package type: SOT-23-6 Thin (TSOT-23-6)
• Surface mount configuration
• Operating temperature range: -40°C to 125°C

The substitute part maintains all specified electrical characteristics and physical form factor requirements, ensuring functional and mechanical compatibility in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The LM2736YMK/NOPB is the manufacturer-recommended substitute for the LM2736YMK. Both parts share identical electrical specifications and package configurations. The primary distinction is product status: the LM2736YMK is Last Time Buy (discontinued), while the LM2736YMK/NOPB maintains Active status with significantly higher inventory availability (25,200 units versus 7,483 units).

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The substitute part is supplied in Tape & Reel packaging, whereas the main part is available in Cut Tape and Digi-Reel formats. This packaging difference does not affect electrical or mechanical compatibility.

For new designs or replenishment orders, the LM2736YMK/NOPB is the appropriate selection due to active production status and sustained supply chain availability.

Frequently Asked Questions (FAQ)

Q: Are the LM2736YMK and LM2736YMK/NOPB electrically identical?

A: Yes. Both parts share identical electrical specifications including input voltage range (3V–18V), adjustable output voltage (1.25V–16V), output current (750mA), switching frequency (550kHz), and operating temperature range (-40°C to 125°C).

Q: What is the difference between these two part numbers?

A: The primary differences are product status and packaging format. The LM2736YMK is Last Time Buy (discontinued production), while the LM2736YMK/NOPB is Active. The main part uses Cut Tape and Digi-Reel packaging; the substitute uses Tape & Reel packaging. Both are surface-mount SOT-23-6 Thin packages.

Q: Can I use LM2736YMK/NOPB as a direct replacement in existing designs?

A: Yes. The substitute part maintains identical electrical characteristics, output configuration, and physical form factor. No circuit modifications are required.

Q: Why is the LM2736YMK being phased out?

A: The LM2736YMK carries Last Time Buy status, indicating Texas Instruments has discontinued production. The LM2736YMK/NOPB represents the active production variant.

Q: Are there compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings (1 – Unlimited).

Q: Does packaging format affect circuit performance?

A: No. Tape & Reel and Cut Tape formats are handling and supply chain distinctions only. The component itself and its electrical performance remain unchanged.