BU45L292G-TL Equivalent & Substitute Parts

Part Overview

The BU45L292G-TL is a voltage supervisor IC from Rohm Semiconductor designed for single-channel voltage monitoring applications. It functions as a voltage detector with open drain or open collector output, providing active low reset functionality. The device is classified as a Power Management PMIC and is packaged in a 3-SSOP (TO-236-3/SC-59/SOT-23-3) surface mount package.

The BU45L292G-TL carries a "Not For New Designs" product status, indicating that Rohm Semiconductor has discontinued active development and support for this series. This status necessitates identifying functionally equivalent alternatives from the same manufacturer's active product lines to ensure long-term design viability and supply chain continuity.

Substiute Parts

BU45L292G-TL

Rohm SemiconductorIn Stock: 686BU45L292G-TL Datasheet

Current PartRFQ

BU45K292G-TL

Rohm SemiconductorIn Stock: 9456BU45K292G-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BU45L292G-TL is determined by strict equivalence across the following critical parameters:

• Voltage Threshold: 2.9V (exact match required)
• Number of Channels: 1 channel (single-channel monitoring only)
• Output Configuration: Open Drain or Open Collector
• Reset Logic: Active Low
• Reset Timeout: 120ms Minimum
• Package Type: 3-SSOP (TO-236-3/SC-59/SOT-23-3)
• Operating Temperature Range: -40°C ~ 105°C
• Mounting Type: Surface Mount

The BU45K292G-TL qualifies as a parametric equivalent substitute. Both devices are manufactured by Rohm Semiconductor and share identical electrical specifications, threshold voltage, output characteristics, reset behavior, and package configuration. The primary distinction is product status: the BU45K292G-TL is classified as Active, whereas the BU45L292G-TL is Not For New Designs.

Parameter Comparison

Engineering Selection Recommendations

The BU45K292G-TL is the direct parametric equivalent for the BU45L292G-TL. Both devices meet ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment across applications.

For new designs, the BU45K292G-TL is the appropriate selection due to its Active product status, which guarantees ongoing manufacturer support, availability, and process continuity. The BU45L292G-TL should be reserved for legacy system maintenance only, where existing inventory and design validation have already been established.

Both parts are functionally interchangeable at the circuit level, with no modifications to PCB layout, schematic connections, or firmware required. The 3-SSOP package footprint is identical, and all electrical characteristics remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can the BU45K292G-TL be used as a direct replacement for the BU45L292G-TL in existing designs?

A: Yes. The BU45K292G-TL is a parametric equivalent with identical voltage threshold (2.9V), output configuration (open drain/open collector), reset behavior (active low, 120ms minimum), package type (3-SSOP), and operating temperature range (-40°C ~ 105°C). No circuit modifications are required.

Q: Why is the BU45L292G-TL marked as "Not For New Designs"?

A: This designation indicates that Rohm Semiconductor has transitioned this product to end-of-life status and is no longer actively developing or supporting the BU45Lxxx series. New designs should utilize the BU45K292G-TL from the active BU45Kxxx series.

Q: Are there any differences in package dimensions or pin configuration between these parts?

A: No. Both parts use the identical 3-SSOP package (TO-236-3/SC-59/SOT-23-3) with the same pin configuration and footprint. PCB designs require no modification.

Q: What is the significance of the series designation change from BU45Lxxx to BU45Kxxx?

A: The series change reflects Rohm Semiconductor's product line evolution. The BU45Kxxx series represents the active, supported generation of single-channel voltage supervisors with the same electrical specifications as the legacy BU45Lxxx series.

Q: Are compliance certifications identical between both parts?

A: Yes. Both the BU45L292G-TL and BU45K292G-TL are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 3, 168 hours). Regulatory requirements are met by either part.