SC5014MLTRT LED Driver IC Equivalent & Substitute Parts

Part Overview

The SC5014MLTRT is a 4-output LED driver IC with integrated DC-DC step-up (boost) regulator manufactured by Semtech Corporation. This device is designed for backlight applications, featuring analog and PWM dimming control with 120mA per-channel output capability and a 4.5V to 27V input supply range. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

SC5014MLTRT

Semtech CorporationIn Stock: 3098SC5014MLTRT Datasheet

Current PartRFQ

A8519KLPTR-T

Allegro MicroSystemsIn Stock: 2031A8519KLPTR-T Datasheet

MFR RecommendedRFQ

BD93941FP-E2

Rohm SemiconductorIn Stock: 2871BD93941FP-E2 Datasheet

MFR RecommendedRFQ

BD9394FP-E2

Rohm SemiconductorIn Stock: 3150BD9394FP-E2 Datasheet

MFR RecommendedRFQ

ISL97684IRTZ

Renesas Electronics CorporationIn Stock: 4238ISL97684IRTZ Datasheet

MFR RecommendedRFQ

LM36274YFFR

Texas InstrumentsIn Stock: 83124LM36274YFFR Datasheet

MFR RecommendedRFQ

LT3599IFE#TRPBF

Analog Devices Inc.In Stock: 1104LT3599IFE#TRPBF Datasheet

MFR RecommendedRFQ

MP3384LGQ-P

Monolithic Power Systems Inc.In Stock: 955MP3384LGQ-P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC5014MLTRT is determined by the following critical parameters:

• Topology: Step-up (boost) DC-DC regulator with 4 outputs
• Input Voltage Range: Minimum 4.5V supply capability
• Output Voltage: Minimum 50V output capability
• Output Current: Per-channel current rating of 120mA or higher
• Dimming Control: Support for both analog and PWM dimming
• Package Type: Surface mount with exposed pad thermal management
• Application: LED backlight driver

Substitute parts must maintain compatibility across these parameters while accommodating variations in package form factor, frequency, and operating temperature ranges. Parts with lower output current ratings, reduced input voltage ranges, or limited dimming control options represent functional compromises and are listed with explicit parameter differences noted.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility)

A8519KLPTR-T and LT3599IFE#TRPBF are the closest functional equivalents to the SC5014MLTRT. Both maintain 4-output topology, support analog and PWM dimming, and deliver 120mA per-channel output current. A8519KLPTR-T is actively produced and carries AEC-Q100 automotive qualification. LT3599IFE#TRPBF is actively produced with extended operating temperature range (-40°C to 125°C junction temperature) and broader input voltage tolerance (2.7V to 30V).

Secondary Substitutes (Functional Alternatives)

BD9394FP-E2 is an active product offering 150mA per-channel output with analog and PWM dimming support. This part accommodates higher current demands but requires minimum 9V input supply, limiting applicability in lower-voltage systems. ISL97684IRTZ and MP3384LGQ-P support PWM dimming only (no analog control) and deliver reduced per-channel current (50mA and 30mA respectively), making them suitable only for lower-power backlight applications.

LM36274YFFR operates from 2.7V to 5V input range with maximum 29V output and 30mA per-channel current. This part is optimized for low-voltage mobile and portable applications and is not suitable for systems requiring the full 50V output capability of the original design.

Compliance Considerations

All substitute parts listed are RoHS3 compliant. A8519KLPTR-T carries AEC-Q100 automotive qualification, suitable for automotive-grade applications. BD93941FP-E2 is marked "Not For New Designs" and should be avoided for new product development despite active inventory availability.

Frequently Asked Questions (FAQ)

Q: Can I use ISL97684IRTZ as a direct replacement for SC5014MLTRT?

A: ISL97684IRTZ is functionally compatible for topology and output count but has significant limitations. It supports PWM dimming only (no analog control), delivers 50mA per-channel versus 120mA, and produces maximum 45V output versus 50V. Use only if your application requires PWM dimming exclusively and operates within the reduced current and voltage specifications.

Q: What is the key difference between A8519KLPTR-T and LT3599IFE#TRPBF?

A: Both parts deliver 120mA per-channel output with analog and PWM dimming. A8519KLPTR-T operates from 4.5V to 40V input with 40V maximum output and includes automotive qualification (AEC-Q100). LT3599IFE#TRPBF operates from 2.7V to 30V input with 44V maximum output and supports broader temperature range. Select A8519KLPTR-T for automotive applications; select LT3599IFE#TRPBF for extended temperature or lower minimum input voltage requirements.

Q: Why do some substitutes have lower per-channel current ratings?

A: ISL97684IRTZ (50mA), LM36274YFFR (30mA), and MP3384LGQ-P (30mA) are optimized for lower-power backlight applications such as small displays or portable devices. These parts cannot deliver the full 120mA per-channel current of the SC5014MLTRT and are suitable only if your LED load requirements are reduced.

Q: Are package differences significant for PCB redesign?

A: Yes. SC5014MLTRT uses 20-VFQFN (4x4mm) package. Substitutes use different packages: A8519KLPTR-T (20-TSSOP), BD9394FP-E2 (20-SOIC with heat tabs), ISL97684IRTZ (16-TQFN 3x3mm), LM36274YFFR (24-DSBGA), LT3599IFE#TRPBF (28-TSSOP), and MP3384LGQ-P (16-VFQFN 3x3mm). Package changes require PCB layout modifications, including trace routing, thermal management, and decoupling capacitor placement adjustments.

Q: Can I use BD93941FP-E2 for new designs?

A: BD93941FP-E2 is marked "Not For New Designs" by the manufacturer. Although inventory is available, Rohm Semiconductor recommends against using this part in new product development. Use BD9394FP-E2 (active status) instead if Rohm topology is required.

Q: What dimming control options are available across substitutes?

A: SC5014MLTRT supports analog and PWM dimming. A8519KLPTR-T, BD93941FP-E2, BD9394FP-E2, and LT3599IFE#TRPBF maintain both analog and PWM support. ISL97684IRTZ, MP3384LGQ-P support PWM only. LM36274YFFR adds I2C control in addition to analog and PWM. Select based on your dimming interface requirements.