MSL2162DQ LED Driver IC Equivalent & Substitute Parts

Part Overview

The MSL2162DQ is a 16-output linear PWM LED driver IC manufactured by Microchip Technology in a 64-TQFN (9x9) package. This device is designed for backlight and lighting applications requiring PWM dimming control. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and production continuity.

Substiute Parts

MSL2162DQ

Microchip TechnologyIn Stock: 690MSL2162DQ Datasheet

Current PartRFQ

TC62D722CFNG

Toshiba Semiconductor and StorageIn Stock: 4431TC62D722CFNG Datasheet

MFR RecommendedRFQ

TLC5948ADBQR

Texas InstrumentsIn Stock: 65448TLC5948ADBQR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSL2162DQ requires matching the following critical parameters:

• Number of Outputs: 16 channels (mandatory)
• Type: Linear LED driver topology
• Dimming Control: PWM or shift register-based dimming capability
• Internal Switching: Presence of integrated output switches
• Operating Temperature Range: Minimum -40°C to 85°C or higher
• RoHS Compliance: ROHS3 or equivalent environmental certification
• Package Compatibility: Surface mount configuration suitable for board integration

The identified substitute parts maintain the 16-output LED driver functionality but operate at lower supply voltages (3V–5.5V) compared to the MSL2162DQ (10.8V–13.2V). Both substitutes employ shift register topology with integrated output switches, enabling PWM or digital dimming control. These alternatives are active products with established supply chains and full RoHS compliance.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with established manufacturing and supply availability, addressing the obsolescence of the MSL2162DQ.

TC62D722CFNG (Toshiba) offers the highest output voltage capability (17V) and current per channel (90mA), making it suitable for applications requiring higher LED forward voltage or brightness levels. This part carries MSL Level 1 rating, indicating superior moisture resistance for long-term storage and handling.

TLC5948ADBQR (Texas Instruments) provides moderate output voltage (10V) and current (60mA) with ROHS3 compliance matching the original part's environmental certification. This device is available in high volume (65,400 pcs in stock) and is specified for signage applications.

Selection between these substitutes depends on system-level requirements: output voltage headroom, per-channel current demands, and thermal operating range. The MSL2162DQ's 105°C upper temperature limit exceeds both substitutes (85°C maximum), requiring thermal design review if the original specification relied on this extended range.

Frequently Asked Questions (FAQ)

Q: Can TC62D722CFNG or TLC5948ADBQR directly replace MSL2162DQ in existing designs?

A: Direct pin-for-pin replacement is not possible. The MSL2162DQ uses a 64-pin package, while both substitutes employ 24-pin packages. Circuit redesign is required, including modifications to control signal routing, power distribution, and PCB layout. However, the 16-output LED driver functionality is preserved.

Q: What is the primary difference between the two substitute parts?

A: TC62D722CFNG operates at higher output voltage (17V) and current (90mA per channel) compared to TLC5948ADBQR (10V, 60mA). TC62D722CFNG uses shift register topology with external dimming control, while TLC5948ADBQR also employs shift register control. Both support PWM-compatible dimming through digital control signals.

Q: Are there supply voltage compatibility issues?

A: Yes. The MSL2162DQ requires 10.8V–13.2V supply, while both substitutes operate at 3V–5.5V. System power architecture must be redesigned to accommodate lower supply voltage rails or additional voltage regulation stages must be introduced.

Q: Do the substitute parts maintain RoHS compliance?

A: Yes. TC62D722CFNG is RoHS Compliant, and TLC5948ADBQR is ROHS3 Compliant, matching or exceeding the original MSL2162DQ specification.

Q: What is the impact of different moisture sensitivity levels?

A: MSL2162DQ (Level 3, 168 hours) requires more careful handling and storage compared to TC62D722CFNG (Level 1, unlimited). TLC5948ADBQR (Level 2, 1 year) provides intermediate protection. Lower MSL ratings reduce risk of moisture-induced failures during manufacturing and storage.

Q: Can the operating temperature range affect system reliability?

A: The MSL2162DQ supports -40°C to 105°C, while both substitutes are rated to -40°C to 85°C. Applications requiring operation above 85°C must implement additional thermal management or accept reduced maximum operating temperature.