MSL3167GU LED Driver IC Equivalent & Substitute Parts

Part Overview

The MSL3167GU is a 16-output linear PWM LED driver IC manufactured by Microchip Technology, designed for backlight applications in automotive-grade systems. This device operates within a 4.75V to 5.5V supply range and delivers 30mA per output channel with PWM dimming capability in a 32-SOIC package.

The MSL3167GU is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems currently utilizing this component.

Substiute Parts

MSL3167GU

Microchip TechnologyIn Stock: 1147MSL3167GU Datasheet

Current PartRFQ

A6260KLJTR-T

Allegro MicroSystemsIn Stock: 45572A6260KLJTR-T Datasheet

MFR RecommendedRFQ

BCR402UW6-7

Diodes IncorporatedIn Stock: 3139BCR402UW6-7 Datasheet

MFR RecommendedRFQ

NCR401UX

Nexperia USA Inc.In Stock: 17026NCR401UX Datasheet

MFR RecommendedRFQ

RT8456GE

Richtek USA Inc.In Stock: 1546RT8456GE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSL3167GU requires evaluation based on the following critical parameters:

Primary Substitution Criteria:

• Linear topology with PWM dimming capability
• Automotive-grade qualification (AEC-Q100 or AEC-Q101)
• ROHS3 compliance
• Operating temperature range compatibility
• Supply voltage compatibility or wider operating range
• Output current capability per channel

Substitution Logic: The MSL3167GU is a multi-output (16-channel) driver with fixed 30mA per-channel output. Direct pin-for-pin replacements are not available in the provided substitute list, as all listed alternatives are single-output devices. Substitution is feasible only in applications where:

1. The design can be modified to use multiple single-output drivers in place of the 16-channel device, or
2. A subset of the 16 outputs is required, allowing use of a lower-channel-count alternative

All substitute parts listed maintain linear topology, PWM dimming, automotive qualification, and ROHS3 compliance. Supply voltage ranges vary; selection depends on the specific application voltage requirements.

Parameter Comparison

Engineering Selection Recommendations

A6260KLJTR-T (Allegro MicroSystems): Active product status with automotive qualification (AEC-Q100). Supply voltage range (6V to 40V) exceeds the MSL3167GU minimum but accommodates wider input variations. Output current of 350mA per channel exceeds the 30mA requirement. Extended operating temperature range (-40°C to 125°C) provides margin beyond the MSL3167GU specification. Single-output configuration requires design modification for multi-channel applications.

BCR402UW6-7 (Diodes Incorporated): Active product with automotive qualification (AEC-Q101). Lowest minimum supply voltage (1.4V) among substitutes, with maximum rating of 40V. Output current of 100mA exceeds the 30mA per-channel requirement. Operating temperature range (-55°C to 150°C) provides extended margin. PWM dimming confirmed. Single-output configuration requires design modification.

NCR401UX (Nexperia USA Inc.): Active product with automotive qualification (AEC-Q101). Maximum supply voltage of 40V specified; minimum not provided. Output current of 10mA is below the MSL3167GU 30mA per-channel specification. Operating temperature range (-55°C to 150°C) provides extended margin. Dimming capability not specified in provided data. Single-output configuration requires design modification.

RT8456GE (Richtek USA Inc.): Active product. Supply voltage range (4.75V to 48V) directly accommodates the MSL3167GU minimum. Output current and dimming capability not specified in provided data. Operating temperature range (-40°C to 125°C) provides margin. Automotive grade not specified. Single-output configuration requires design modification.

Frequently Asked Questions (FAQ)

Q: Can any of these substitute parts directly replace the MSL3167GU without design changes?

A: No. The MSL3167GU is a 16-output device, while all listed substitutes are single-output drivers. Direct replacement requires either design modification to use multiple single-output devices or selection of a different multi-output LED driver not included in this list.

Q: Which substitute part is most compatible with the MSL3167GU supply voltage range?

A: RT8456GE maintains the same minimum supply voltage (4.75V) as the MSL3167GU. However, its maximum rating of 48V exceeds the MSL3167GU's 5.5V maximum, requiring careful circuit design to ensure the device is not exposed to overvoltage conditions.

Q: Are all substitute parts automotive-grade?

A: A6260KLJTR-T, BCR402UW6-7, and NCR401UX carry explicit automotive qualification (AEC-Q100 or AEC-Q101). RT8456GE does not specify automotive grade in the provided data.

Q: Which substitute part has the closest output current specification to the MSL3167GU?

A: BCR402UW6-7 with 100mA per channel is the closest match, though it still exceeds the 30mA requirement. NCR401UX at 10mA is below the requirement. A6260KLJTR-T at 350mA significantly exceeds it. RT8456GE output current is not specified.

Q: What is the impact of package differences?

A: The MSL3167GU uses a 32-SOIC package. Substitute parts use smaller packages (8-SOIC-EP, SOT-23-6, SC-74/SOT-457). PCB layout, thermal management, and assembly processes must be re-evaluated for each alternative package type.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the MSL3167GU specification.

Q: Which substitute part offers the widest operating temperature range?

A: BCR402UW6-7 and NCR401UX both specify -55°C to 150°C, providing the widest margin beyond the MSL3167GU's -40°C to 85°C range.