A6275SLW-T LED Driver IC Equivalent & Substitute Parts

Part Overview

The A6275SLW-T is an 8-output linear LED driver IC manufactured by Allegro MicroSystems, designed for shift register-based LED dimming applications. This device operates with a 4.5V to 5.5V supply and delivers 75.5mA per output channel. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. Substitute parts maintain the core functionality of 8-output linear shift register topology while offering extended availability and active product status.

Substiute Parts

A6275SLW-T

Allegro MicroSystemsIn Stock: 934A6275SLW-T Datasheet

Current PartRFQ

MAX6968APE+

Analog Devices Inc./Maxim IntegratedIn Stock: 2225MAX6968APE+ Datasheet

MFR RecommendedRFQ

STP08DP05XTTR

STMicroelectronicsIn Stock: 337412STP08DP05XTTR Datasheet

MFR RecommendedRFQ

TLC5916ID

Texas InstrumentsIn Stock: 6028TLC5916ID Datasheet

MFR RecommendedRFQ

TLC5917ID

Texas InstrumentsIn Stock: 1601TLC5917ID Datasheet

MFR RecommendedRFQ

TLC5917IPWR

Texas InstrumentsIn Stock: 20803TLC5917IPWR Datasheet

MFR RecommendedRFQ

TPS92638QPWPRQ1

Texas InstrumentsIn Stock: 17621TPS92638QPWPRQ1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the A6275SLW-T is based on the following critical parameters:

• Topology: All substitutes maintain 8-output linear shift register architecture
• Internal Switches: All substitutes include internal switching capability
• Supply Voltage Range: Substitutes operate within or exceed the 4.5V–5.5V range
• Output Current Capability: Substitutes deliver equal or greater current per channel (75.5mA minimum)
• RoHS Compliance: All substitutes maintain ROHS3 compliance
• Mounting Type: Substitutes are surface mount devices compatible with automated assembly

Five active substitute parts are identified across three package types: 16-PDIP (through-hole), 16-HTSSOP, 16-SOIC, and 16-TSSOP (surface mount variants). Each substitute meets the functional requirements of the obsolete A6275SLW-T while offering extended product lifecycle and availability.

Parameter Comparison

Engineering Selection Recommendations

Direct Package Compatibility (16-SOIC Surface Mount)

TLC5916ID and TLC5917ID are pin-compatible surface mount alternatives in the 16-SOIC package. Both devices deliver 120mA per output channel, exceeding the A6275SLW-T specification of 75.5mA. Both are active products with ROHS3 compliance and MSL-1 ratings. TLC5916ID and TLC5917ID are functionally equivalent for shift register-based LED dimming applications.

Surface Mount Alternative (16-TSSOP)

TLC5917IPWR provides the same 8-output shift register topology in a 16-TSSOP package with 120mA per channel output. This device is active, ROHS3 compliant, and MSL-1 rated. The TSSOP package offers a smaller footprint than SOIC, suitable for space-constrained designs.

Higher Output Current Capability (16-HTSSOP)

STP08DP05XTTR delivers 100mA per output channel in a 16-HTSSOP package with extended frequency capability (30MHz). This device is active and ROHS3 compliant but carries MSL-3 rating. The higher output voltage specification (20V) and increased current capacity support applications requiring greater LED drive capability.

Through-Hole Alternative (16-DIP)

MAX6968APE+ is a through-hole 16-DIP package option delivering 55mA per output channel. This device is active and ROHS3 compliant with MSL-1 rating. Selection of this part is appropriate only for legacy through-hole assembly processes or prototyping applications where surface mount is not required.

Automotive-Grade Option with Extended Supply Range

TPS92638QPWPRQ1 is an automotive-qualified device (AEC-Q100) with extended supply voltage range (5V–40V) and PWM/analog dimming capability. This 20-HTSSOP package device delivers 70mA per output channel and is suitable for automotive LED applications. MSL-3 rating applies.

Frequently Asked Questions (FAQ)

Q: Can TLC5916ID or TLC5917ID directly replace the A6275SLW-T?

A: Yes, both devices are pin-compatible 16-SOIC surface mount packages with 8-output shift register topology. The 120mA per channel output exceeds the A6275SLW-T specification of 75.5mA. Functional compatibility is confirmed for shift register-based LED dimming circuits.

Q: What is the difference between TLC5916ID and TLC5917ID?

A: Both devices are functionally identical 8-output linear shift register LED drivers in 16-SOIC packages with 120mA per channel output, active product status, ROHS3 compliance, and MSL-1 ratings. Selection between these parts is based on supplier availability and inventory.

Q: Why does TLC5917IPWR have a different package than TLC5917ID?

A: TLC5917IPWR uses a 16-TSSOP package while TLC5917ID uses 16-SOIC. Both are surface mount variants of the same base product (TLC5917) with identical electrical specifications. Package selection depends on PCB layout requirements and assembly process compatibility.

Q: Is MAX6968APE+ suitable for new designs?

A: MAX6968APE+ is an active product with ROHS3 compliance and MSL-1 rating. However, this device uses through-hole 16-DIP packaging, which is incompatible with modern surface mount assembly processes. Selection is appropriate only for legacy through-hole designs or prototyping applications.

Q: Can TPS92638QPWPRQ1 replace the A6275SLW-T in standard applications?

A: TPS92638QPWPRQ1 is an automotive-qualified device with PWM/analog dimming capability and extended supply voltage range (5V–40V). While functionally capable of 8-output LED driving, this device is optimized for automotive applications. Standard industrial applications should use TLC5916ID, TLC5917ID, or TLC5917IPWR.

Q: What is the significance of MSL rating differences?

A: MSL-1 rated devices (TLC5916ID, TLC5917ID, TLC5917IPWR, MAX6968APE+) have unlimited shelf life under controlled storage. MSL-3 rated devices (STP08DP05XTTR, TPS92638QPWPRQ1) require storage at ≤30°C/≤60% RH and have 168-hour floor life after moisture exposure. MSL-1 devices are preferred for long-term inventory management.

Q: Does output voltage specification affect substitution compatibility?

A: Output voltage specification indicates the maximum voltage the driver can sustain at its output pins. The A6275SLW-T specifies 4V output, while most substitutes specify 20V. Higher output voltage capability does not prevent substitution; it indicates greater design margin for LED string configurations. Application circuit design determines actual operating voltage.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all identified substitute parts (MAX6968APE+, STP08DP05XTTR, TLC5916ID, TLC5917ID, TLC5917IPWR, TPS92638QPWPRQ1) are ROHS3 compliant, matching the A6275SLW-T compliance status.