Is there a pin-compatible replacement for BL8072COTR33?

Currently, no pin-compatible (pin-to-pin) replacement has been verified. Any alternative in a different package, like TO-263, will not fit the TO-252 footprint and requires a board redesign.

What risks should I check before replacing BL8072COTR33?

Key risks include: 1) Package mismatch (e.g., TO-263 vs. TO-252) requiring a new PCB layout. 2) Lower maximum input voltage, which can damage the part. 3) Higher dropout voltage, which may affect regulation.

BL8072COTR33 Alternatives, Datasheet & Cross Reference | BL

BL8072COTR33 is a 3.3V, 2A low-dropout (LDO) linear regulator in a TO-252 package. Finding a direct replacement requires matching the package, pinout, and key electrical ratings like the 18V maximum input voltage.

AI replacement insight

Electrical riskhigh

Candidates have lower max input voltage (15V vs 18V).

Package riskhigh

Candidates are in TO-263, not the target's TO-252, requiring a new PCB layout.

Firmware risklow

Device is a simple linear regulator with no firmware interaction.

Can it be replaced directly?

No direct pin-to-pin replacements were found. Available alternatives have different packages or lower voltage ratings, requiring board redesign and careful electrical review.

Best replacement path

Search for LDOs with 3.3V fixed output, >=2A current, >=18V input voltage, and a TO-252 (DPAK) package to find a closer match.

Main risk

The main risks are package incompatibility requiring a new PCB layout and candidates having a lower maximum input voltage, which can lead to device failure.

Recommended alternatives

Functional alternative with higher output current, but requires board redesign and careful review of its lower input voltage rating.

View details

Alternative comparison matrix

Feature / factor	BL8072COTR33	AMS1085CM-3.3	LM1085IS-3.3RG	Compatibility / risk
Output Voltage V	3.3V	3.3V	3.3V	3.3V — Output voltage matches.; LM1085IS-3.3RG: Output voltage matches.
Input Voltage V	18V	15V	15V	15V — Lower max input voltage is a critical risk.; LM1085IS-3.3RG: Lower max input voltage is a critical risk.
Output Current A	2A	3A	3A	3A — Higher output current capability.; LM1085IS-3.3RG: Higher output current capability.
Package	TO-252	TO-263-3	TO-263-3	TO-263-3 — Different footprint requires board redesign.; LM1085IS-3.3RG: Different footprint requires board redesign.
Dropout Voltage	0.85V @ 1.5A	1.3V @ 3A	1.5V @ 3A	1.3V @ 3A / 1.5V @ 3A — Higher dropout may affect regulation headroom.; LM1085IS-3.3RG: Higher dropout may affect regulation headroom.

Application & sourcing insights

Questions & answers

No direct drop-in alternative was found. Candidates like the LM1085 and AMS1085 series offer similar function but have different packages and lower input voltage ratings, requiring significant design changes.