Is there a pin-compatible replacement for SG3525AP013TR?

Yes, both SG2525AP013TR and KA3525A(LX) are pin-compatible replacements for the SG3525AP013TR in the SO16 package. They share the same pin functions and layout.

What risks should I check before replacing SG3525AP013TR?

Before replacing, verify the reference voltage (VREF). Some alternatives like KA3525A may have a slightly different VREF (e.g., 5.0V vs 5.1V), which could impact the regulated output voltage. Also, confirm the temperature range meets your application's requirements.

SG3525AP013TR Alternatives, Datasheet & Cross Reference | STMicroelectronics

The SG3525AP013TR is a widely used PWM controller for switching power supplies. Several pin-compatible alternatives exist, including the industrial-grade SG2525AP013TR and cross-vendor options like the KA3525A.

AI replacement insight

Electrical risklow

Key parameters are well-matched, but Vref should be checked for cross-vendor parts.

Package risklow

Pin-compatible SO16 packages are available from multiple vendors.

Can it be replaced directly?

Yes, SG2525AP013TR is a direct pin-compatible replacement with a wider operating temperature range.

Best replacement path

Use the industrial grade SG2525AP013TR for a direct, upgraded replacement, especially if a wider temperature range is beneficial.

Main risk

Minor parametric differences, such as reference voltage in cross-vendor parts, may require circuit validation.

Recommended alternatives

Pin-compatible industrial grade version with a wider operating temperature range.

View details

Alternative comparison matrix

Feature / factor	SG3525AP013TR	SG2525AP013TR	KA3525A(LX)	Compatibility / risk
Package	SO16	SO16	SOP16	SO16 / SOP16 — Package is identical.; KA3525A(LX): Package is a compatible SOP16.
Pin Count	16	16	16	16 — Pin count is identical.; KA3525A(LX): Pin count is identical.
Voltage	8 V to 35 V	8 V to 35 V	-	8 V to 35 V — Supply voltage range matches.
Temperature	0 °C to 70 °C	-25 °C to 85 °C	0°C to +70°C	-25 °C to 85 °C / 0°C to +70°C — Wider industrial temperature range.; KA3525A(LX): Operating temperature range matches.
Reference Voltage	5.1 V	5.1 V	5.0 V	5.1 V / 5.0 V — Reference voltage matches.; KA3525A(LX): Slightly lower reference voltage, may affect output precision.
Current	> 200 mA	-	500mA	500mA — Higher output drive current capability.

Application & sourcing insights

Questions & answers

The best alternative is SG2525AP013TR. It is a pin-compatible part from the same manufacturer, offering a wider industrial temperature range (-25°C to 85°C) as an upgrade.