EL1848IYZ LED Driver IC Equivalent & Substitute Parts

Part Overview

The EL1848IYZ is a LED Driver IC manufactured by Renesas Electronics Corporation, designed as a 1-output DC-DC regulator with step-up (boost) topology and internal switching capability. This component delivers 400mA output current at 14V with a 1MHz switching frequency, optimized for backlight applications. The part operates across a 2.6V to 13.2V supply range and maintains performance from -40°C to 85°C.

The EL1848IYZ is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term product availability for applications currently using this component.

Substiute Parts

EL1848IYZ

Renesas Electronics CorporationIn Stock: 995EL1848IYZ Datasheet

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BD6069GUT-E2

ROHM SemiconductorIn Stock: 20446BD6069GUT-E2 Datasheet

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LM2703MFX-ADJ/NOPB

Texas InstrumentsIn Stock: 23372LM2703MFX-ADJ/NOPB Datasheet

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LT3592EDDB#TRMPBF

Analog Devices Inc.In Stock: 2067LT3592EDDB#TRMPBF Datasheet

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MAX31840ATA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1056MAX31840ATA+ Datasheet

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MIC3289-24YML-TR

Microchip TechnologyIn Stock: 1170MIC3289-24YML-TR Datasheet

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MPQ2483ADS-LF-Z

Monolithic Power Systems Inc.In Stock: 886MPQ2483ADS-LF-Z Datasheet

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STCF05TBR

STMicroelectronicsIn Stock: 795STCF05TBR Datasheet

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TPS61046YFFT

Texas InstrumentsIn Stock: 2535TPS61046YFFT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the EL1848IYZ are selected based on the following critical parameters that determine functional compatibility:

Primary Selection Criteria:

• Topology: Step-Up (Boost) configuration
• Number of Outputs: Single output
• Internal Switch(s): Yes (integrated switching capability)
• Applications: Backlight or Lighting
• Output Current Capability: 270mA to 1.2A range
• Supply Voltage Range: Overlap with 2.6V minimum input
• Output Voltage: 10.2V to 30V range
• Mounting Type: Surface Mount
• RoHS3 Compliance: Required

Substitution Logic: Substitute parts maintain the boost regulator topology with integrated switching and single-output configuration. Parts are grouped by current output capability and supply voltage compatibility. All candidates meet RoHS3 compliance and surface-mount requirements. Output voltage flexibility accommodates various backlight and lighting applications. Frequency variation (1MHz to 1.8MHz) remains within acceptable operating ranges for LED driver applications.

Parameter Comparison

Engineering Selection Recommendations

Active Status Candidates (Recommended for New Designs):

LM2703MFX-ADJ/NOPB, LT3592EDDB#TRMPBF, MAX31840ATA+, MIC3289-24YML-TR, MPQ2483ADS-LF-Z, STCF05TBR, and TPS61046YFFT are all active products with current manufacturer support and ongoing availability. These parts carry ROHS3 compliance and extended operating temperature ranges (-40°C to 125°C), providing superior long-term supply chain stability compared to the obsolete EL1848IYZ.

Boost Topology Alignment:

LM2703MFX-ADJ/NOPB, MAX31840ATA+, MIC3289-24YML-TR, STCF05TBR, and TPS61046YFFT maintain pure step-up (boost) topology with integrated switching, directly matching the EL1848IYZ functional architecture. These candidates are optimal for direct functional replacement in backlight and lighting applications.

Current Output Capability:

For 400mA output requirement, STCF05TBR (400mA flash) provides exact current matching. MIC3289-24YML-TR (1.2A) and MAX31840ATA+ (1A) offer higher current capability with design margin. LM2703MFX-ADJ/NOPB (350mA) and BD6069GUT-E2 (270mA) provide lower current ratings suitable for reduced-power applications.

Supply Voltage Compatibility:

STCF05TBR (2.5V to 5.5V), MIC3289-24YML-TR (2.5V to 6.5V), and TPS61046YFFT (1.8V to 5.5V) maintain the lowest input voltage thresholds, ensuring compatibility with the EL1848IYZ's 2.6V minimum supply specification. MPQ2483ADS-LF-Z (4.5V to 55V) and LT3592EDDB#TRMPBF (3.6V to 36V) support higher supply ranges for extended application flexibility.

Package Considerations:

Package selection depends on PCB layout constraints. The EL1848IYZ uses 8-MSOP (0.118", 3.00mm width). LM2703MFX-ADJ/NOPB (SOT-23-5) and STCF05TBR (25-TFBGA) offer alternative footprints. MIC3289-24YML-TR (8-MLF®) and MAX31840ATA+ (8-TDFN) provide compact alternatives. MPQ2483ADS-LF-Z (14-SOIC) requires larger board area.

Compliance and Certifications:

All substitute candidates meet ROHS3 compliance. MPQ2483ADS-LF-Z carries automotive-grade certification, suitable for automotive backlight applications. All parts maintain REACH unaffected status and EAR99 export classification matching the original part.

Frequently Asked Questions (FAQ)

Q: Can I directly replace EL1848IYZ with any of these substitute parts?

A: Direct replacement depends on package compatibility and circuit design. STCF05TBR and LM2703MFX-ADJ/NOPB offer closest functional alignment but require PCB layout verification due to different package footprints. Electrical parameters (supply voltage, output current, switching frequency) must be validated against your specific application requirements.

Q: Which substitute offers the best supply chain availability?

A: LM2703MFX-ADJ/NOPB, LT3592EDDB#TRMPBF, MAX31840ATA+, MIC3289-24YML-TR, MPQ2483ADS-LF-Z, STCF05TBR, and TPS61046YFFT are all active products with established distribution channels. Active status ensures ongoing manufacturer support and component availability compared to the obsolete EL1848IYZ.

Q: What is the key difference between boost and buck topologies in these parts?

A: The EL1848IYZ uses step-up (boost) topology, which increases input voltage to the output level. LT3592EDDB#TRMPBF and MPQ2483ADS-LF-Z support both step-down (buck) and step-up (boost) configurations, offering topology flexibility. For direct replacement, select boost-only candidates: LM2703MFX-ADJ/NOPB, MAX31840ATA+, MIC3289-24YML-TR, STCF05TBR, or TPS61046YFFT.

Q: How do output current ratings affect substitution?

A: The EL1848IYZ delivers 400mA. STCF05TBR matches this exactly at 400mA (flash mode). Higher-rated parts (MIC3289-24YML-TR at 1.2A, MAX31840ATA+ at 1A) provide design margin and thermal headroom. Lower-rated parts (BD6069GUT-E2 at 270mA, LM2703MFX-ADJ/NOPB at 350mA) are suitable only for reduced-power applications below 270mA.

Q: Are there temperature range differences I should consider?

A: The EL1848IYZ operates -40°C to 85°C. Most active substitutes extend to -40°C to 125°C, providing superior thermal performance. BD6069GUT-E2 (obsolete) operates -30°C to 85°C, matching the original range. Extended temperature range in active parts supports industrial and automotive applications.

Q: What package options are available for space-constrained designs?

A: TPS61046YFFT (6-DSBGA) offers the smallest footprint for ultra-compact layouts. MIC3289-24YML-TR (8-MLF®) and MAX31840ATA+ (8-TDFN) provide compact 8-pin alternatives. LM2703MFX-ADJ/NOPB (SOT-23-5) is suitable for low-profile applications. STCF05TBR (25-TFBGA) and MPQ2483ADS-LF-Z (14-SOIC) require larger board areas.

Q: Do all substitutes support dimming functionality?

A: The EL1848IYZ does not specify dimming capability. Among substitutes, MAX31840ATA+ explicitly supports dimming. MPQ2483ADS-LF-Z supports analog and PWM dimming. Others do not specify dimming features. Verify dimming requirements against your application before selection.

Q: Which substitute is best for automotive applications?

A: MPQ2483ADS-LF-Z carries automotive-grade certification, making it the designated choice for automotive backlight systems. All other candidates are industrial-grade. Automotive applications require grade-specific component selection for reliability and compliance.