LM3532TME-40/NOPB LED Driver IC Equivalent & Substitute Parts

Part Overview

The LM3532TME-40/NOPB is a 3-output LED driver IC with integrated DC-DC regulator topology (Step-Up/Boost) manufactured by Texas Instruments. This device is classified as obsolete, which necessitates identification of active equivalent and substitute components for new designs or production continuity. The LM3532TME-40/NOPB operates across a 2.7V to 5.5V supply range and delivers 40V output with 30mA per channel, utilizing PWM dimming for backlight applications. Obsolete status requires engineers to evaluate parametrically equivalent alternatives or manufacturer-recommended substitutes to maintain design functionality and supply chain reliability.

Substiute Parts

LM3532TME-40/NOPB

Texas InstrumentsIn Stock: 722LM3532TME-40/NOPB Datasheet

Current PartRFQ

LM3532TME-40A/NOPB

Texas InstrumentsIn Stock: 1297LM3532TME-40A/NOPB Datasheet

Parametric EquivalentRFQ

LM3532TMX-40A/NOPB

National SemiconductorIn Stock: 45071LM3532TMX-40A/NOPB Datasheet

Parametric EquivalentRFQ

ISL97683IRTZ-TK

Renesas Electronics CorporationIn Stock: 1449ISL97683IRTZ-TK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM3532TME-40/NOPB is determined by the following critical parameters:

Parametric Equivalents maintain identical or near-identical electrical specifications:

• DC-DC regulator topology (Step-Up/Boost)
• 3-output configuration
• Supply voltage range: 2.7V to 5.5V minimum
• Output voltage: 40V
• Current capacity: 30mA per channel minimum
• PWM dimming capability
• Surface mount packaging (16-pin BGA variants)
• Operating temperature range: -40°C to 125°C
• ROHS3 compliance

Manufacturer-Recommended Substitutes may deviate in specific parameters (supply voltage range, output current, switching frequency, package type) while maintaining functional equivalence for backlight LED driver applications. These are designated as direct replacements by the original manufacturer or industry standards.

Substitutes are grouped by their relationship to the main part: parametric equivalents share all critical electrical parameters, while manufacturer-recommended alternatives provide functional replacement with documented parameter differences.

Parameter Comparison

Engineering Selection Recommendations

LM3532TME-40A/NOPB is the primary parametric equivalent. This part maintains identical electrical specifications to the obsolete LM3532TME-40/NOPB while offering active product status from Texas Instruments. The only distinction is packaging format (Tape & Reel versus tube), which does not affect electrical performance. This substitute is recommended for direct replacement in production environments requiring continuity with the original design.

LM3532TMX-40A/NOPB is a parametric equivalent manufactured by National Semiconductor with identical electrical specifications. This part is available in bulk packaging and maintains active status. The MSL rating differs (3 versus 1), requiring consideration of moisture handling procedures during assembly. This substitute is suitable for applications where bulk packaging is acceptable and moisture sensitivity management is implemented.

ISL97683IRTZ-TK is a manufacturer-recommended substitute from Renesas Electronics Corporation. This part deviates from the original specification in the following parameters: minimum supply voltage (4V versus 2.7V), maximum supply voltage (26.5V versus 5.5V), output voltage (45V versus 40V), current per channel (50mA versus 30mA), switching frequency (600kHz versus 500kHz), and operating temperature range (−40°C to 85°C ambient versus −40°C to 125°C junction). The ISL97683IRTZ-TK is suitable for applications where higher output current, extended supply voltage range, or higher output voltage is required. Package type differs (16-TQFN versus 16-DSBGA), requiring PCB layout modification. This substitute is appropriate when design specifications permit the parameter variations and when the enhanced performance characteristics provide system benefits.

All substitute parts maintain ROHS3 compliance and are suitable for backlight LED driver applications. Selection should be based on specific design requirements, supply chain availability, and packaging constraints.

Frequently Asked Questions (FAQ)

Q: Can LM3532TME-40A/NOPB be used as a direct replacement for LM3532TME-40/NOPB?

A: Yes. The LM3532TME-40A/NOPB is a parametric equivalent with identical electrical specifications. The primary difference is packaging format (Tape & Reel versus tube). No circuit modifications are required for substitution.

Q: What are the key differences between LM3532TMX-40A/NOPB and the original part?

A: The LM3532TMX-40A/NOPB maintains identical electrical specifications but differs in MSL rating (3 versus 1) and packaging format (bulk). The MSL-3 rating requires moisture control during storage and assembly. Electrical performance is equivalent.

Q: Is ISL97683IRTZ-TK a direct replacement?

A: ISL97683IRTZ-TK is a manufacturer-recommended substitute with functional equivalence for backlight applications but includes parameter variations. The minimum supply voltage is higher (4V), maximum supply voltage is significantly higher (26.5V), output voltage is higher (45V), and output current per channel is higher (50mA). The package type is different (16-TQFN versus 16-DSBGA). Circuit design review is required to confirm compatibility with these parameter differences.

Q: What is the impact of package type differences?

A: The LM3532TME-40/NOPB, LM3532TME-40A/NOPB, and LM3532TMX-40A/NOPB use 16-DSBGA packaging, which are mechanically and electrically compatible. The ISL97683IRTZ-TK uses 16-TQFN (3x3) packaging, requiring PCB layout redesign, different footprint implementation, and thermal management evaluation.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitutes (LM3532TME-40A/NOPB, LM3532TMX-40A/NOPB, and ISL97683IRTZ-TK) are ROHS3 compliant and suitable for applications requiring environmental compliance.

Q: What is the significance of MSL rating differences?

A: MSL-1 (unlimited) indicates no moisture sensitivity restrictions. MSL-3 (168 hours) requires that components be stored in controlled humidity environments and used within 168 hours of bag opening. LM3532TMX-40A/NOPB and ISL97683IRTZ-TK require moisture handling procedures during manufacturing.

Q: Can ISL97683IRTZ-TK operate at 2.7V supply voltage?

A: No. ISL97683IRTZ-TK requires a minimum supply voltage of 4V. The original LM3532TME-40/NOPB operates at 2.7V minimum. This substitute is not suitable for applications requiring operation below 4V supply voltage.