Is there a pin-compatible replacement for TPS62120DCNR?

Currently, there are no known pin-compatible replacements for the TPS62120DCNR. All potential substitutes require board redesign due to different pin configurations.

What risks should I check before replacing TPS62120DCNR?

Key risks include package and pinout mismatch requiring a new PCB layout, a higher minimum input voltage on substitutes, and significantly different output current ratings which can affect efficiency in low-power designs.

TPS62120DCNR Alternatives, Datasheet & Cross Reference | Texas Instruments

The TPS62120DCNR is a high-efficiency 75mA synchronous buck converter from Texas Instruments, ideal for low-power applications requiring a wide input voltage range (2V-15V) in a compact SOT-23-8 package.

AI replacement insight

Electrical riskhigh

Most alternatives have higher min Vin and much higher Iout, affecting performance.

Package riskhigh

No known pin-compatible parts exist; PCB redesign is required.

Firmware risklow

These are analog-controlled converters with no firmware interaction.

Can it be replaced directly?

No direct pin-to-pin replacement for the TPS62120DCNR is readily available. All known alternatives require PCB layout changes due to different pinouts or packages.

Best replacement path

Finding a direct drop-in replacement is difficult. The best path is to identify a functional alternative and redesign the PCB layout, paying close attention to the minimum input voltage and quiescent current.

Main risk

The primary risk is electrical incompatibility, particularly the higher minimum input voltage of substitutes, which can prevent operation in battery-powered systems.

Recommended alternatives

A functional alternative in the same SOT-23-8 package, but requires a new PCB layout due to a different pinout and electrical specs.

View details

Alternative comparison matrix

Feature / factor	TPS62120DCNR	TPS562219ADDFR	XL1583E1	Compatibility / risk
Package	SOT-23-8	SOT-23-8	SOP8	SOT-23-8 / SOP8 — Package footprint is the same.; XL1583E1: Different package requires new PCB layout.
Pinout	Compatible	Different	-	Different — Pin functions are not compatible. Requires PCB redesign.
Voltage	2V to 15V	4.5V to 17V	3.6V to 28V	4.5V to 17V / 3.6V to 28V — Minimum input voltage is higher (4.5V vs 2V).; XL1583E1: Minimum input voltage is higher (3.6V vs 2V).
Current	0.075A	2A	3A	2A / 3A — Significantly higher output current may affect low-load efficiency.; XL1583E1: Vastly higher output current.
Switching Frequency	~800kHz	-	380kHz	380kHz — Different frequency requires new external components.

Application & sourcing insights

Questions & answers

While no direct drop-in exists, parts like the TI TPS562219ADDFR offer a similar function in the same SOT-23-8 package but require a new PCB layout due to a different pinout and electrical parameters.