A6B595KLW Equivalent & Substitute Parts

Part Overview

The A6B595KLW is an 8-output N-channel power switch driver manufactured by Allegro MicroSystems, designed for low-side switching applications with serial and strobe interface control. This component operates at 4.5V to 5.5V supply voltage with 150mA maximum output current per channel and 5.5Ω typical on-resistance. The device is classified as obsolete, making equivalent substitutes necessary for new designs and production continuity.

Substiute Parts

A6B595KLW

Allegro MicroSystemsIn Stock: 1160A6B595KLW Datasheet

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TPIC6B595DW

Texas InstrumentsIn Stock: 5633TPIC6B595DW Datasheet

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TPIC6B595DWR

Texas InstrumentsIn Stock: 17525TPIC6B595DWR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the A6B595KLW is based on the following critical parameters that must align across alternatives:

• Package compatibility: 20-SOIC form factor ensures mechanical and electrical pin compatibility
• Supply voltage range: 4.5V ~ 5.5V operation maintains system voltage compatibility
• Output configuration: 8-bit output capability with low-side switching topology
• Interface type: Serial and strobe control functionality
• Thermal operating range: -40°C to 85°C minimum requirement

The Texas Instruments TPIC6B595 series (TPIC6B595DW and TPIC6B595DWR) meets these substitution criteria. Both devices are 8-bit shift registers with open-drain outputs in 20-SOIC packaging, operate within the same supply voltage range, and support serial-to-parallel conversion with strobe control. The primary distinction between substitutes is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

TPIC6B595DWR is the primary substitute for new designs and production applications. This device carries Active product status, ensuring long-term availability and manufacturer support. It meets ROHS3 compliance requirements, addressing environmental and regulatory standards that the original A6B595KLW does not satisfy. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin beyond the original specification.

TPIC6B595DW serves as a secondary substitute option where tube packaging is acceptable. This variant maintains identical electrical specifications and 20-SOIC package compatibility but carries Obsolete product status, limiting its suitability for long-term production commitments.

Both TPIC6B595 variants function as direct electrical equivalents within the specified supply voltage and operating temperature ranges. The shift register architecture with open-drain outputs provides functionally equivalent switching capability to the original latched driver topology for serial-to-parallel conversion applications.

Frequently Asked Questions (FAQ)

Q: Can TPIC6B595DW and TPIC6B595DWR be used interchangeably with A6B595KLW?

A: Yes, both devices are electrically and mechanically compatible. The primary difference is packaging format (tube versus cut tape/digi-reel) and product status. TPIC6B595DWR is recommended for new designs due to Active status.

Q: What is the difference between open-drain output and N-channel output?

A: Both configurations provide low-side switching capability. Open-drain outputs require external pull-up resistors to establish high-level voltage, while N-channel outputs integrate the pull-up function. For applications originally designed with A6B595KLW, external pull-up resistors must be verified in the TPIC6B595 implementation.

Q: Does the extended operating temperature range of TPIC6B595 affect compatibility?

A: No. The TPIC6B595 series supports -40°C to 125°C operation, which encompasses the original -40°C to 85°C specification. This extended range provides additional thermal margin without affecting compatibility.

Q: Are there RoHS compliance implications when substituting?

A: Yes. The A6B595KLW is RoHS non-compliant, while both TPIC6B595 variants are ROHS3 compliant. New designs should utilize TPIC6B595DWR to meet current environmental regulations.

Q: What packaging considerations apply to these substitutes?

A: All three devices use identical 20-SOIC (0.295", 7.50mm width) surface-mount packaging. PCB footprints and reflow profiles remain unchanged. The distinction between TPIC6B595DW (tube) and TPIC6B595DWR (cut tape/digi-reel) affects only supply chain and handling procedures, not board-level implementation.