A6B595KLWTR

Overview

The A6B595KLWTR is a discontinued 8-bit serial-input DMOS power driver manufactured by Allegro MicroSystems. It integrates an 8-bit CMOS shift register, data latches, control circuitry, and eight DMOS power driver outputs in a 20-SOIC package. The device features a serial-data input rate exceeding 5 MHz and a CMOS serial-data output for cascading. Each output can sink up to 150 mA continuously with a typical on-state resistance of 5 Ω. The minimum output clamp voltage is 50 V, and the supply voltage range is 4.5 V to 5.5 V. It operates within a temperature range of -40°C to 85°C.

Feature Summary

• Integrates an 8-bit CMOS shift register and data latches for direct microprocessor interfacing
• Provides eight low-side DMOS power driver outputs capable of sinking medium-current loads
• Supports cascade connections via a dedicated CMOS serial-data output pin
• Features low power consumption and reduced supply current requirements

Applications

• Relay driving circuits
• Solenoid control systems
• Medium-current peripheral power load management
• High-voltage peripheral power load switching

Procurement Notes

This component is officially obsolete and no longer in production. Verification of availability is restricted to existing stock or replacement parts. Sourcing requires confirmation of end-of-life status and adherence to manufacturer discontinuation notices. Replacement components must be evaluated for functional compatibility.

Selection Notes

Designers should consider the device's 50 V maximum load voltage and 150 mA continuous output current limits when selecting this driver. The serial interface requires careful timing consideration for input rates over 5 MHz. Thermal management is necessary to maintain operation above 85°C ambient temperatures due to the specific package thermal characteristics.

Part Context

The A6B595KLWTR belongs to the 6B595 family of 8-bit serial-input DMOS power drivers from Allegro MicroSystems. This series is designed to replace older devices like the TPIC6B595N and TPIC6B595DW. The KLW suffix denotes the wide-body small-outline plastic package with gull-wing leads, distinguishing it from the KA dual-in-line variant.

Replacement Considerations

The TPIC6B595DWR from Texas Instruments is listed as an upgrade replacement. Verify pinout compatibility and electrical specifications before substitution.

FAQ

What is the maximum serial-data input rate for the A6B595KLWTR?

The serial-data input rate exceeds 5 MHz.

How are the DMOS outputs controlled?

All output drivers are disabled when the OUTPUT ENABLE input is high.

Can multiple A6B595KLWTR devices be connected in series?

Yes, a CMOS serial-data output enables cascade connections for applications requiring additional drive lines.