A6812ELWTR

Overview

The Allegro MicroSystems A6812ELWTR is a bipolar latch driver IC designed for power distribution and load driving applications. It features a 1:20 input-to-output ratio, providing twenty high-side outputs from a single non-inverting input. The device operates with a supply voltage range of 3V to 5.5V and supports a maximum load voltage of 60V. Each output can deliver a maximum current of 40mA. It utilizes both parallel and serial interfaces for control. The component is housed in a 28-SOIC surface-mount package and is rated for an operating temperature range of -40°C to 85°C.

Feature Summary

• Provides twenty independent high-side bipolar outputs driven by a single input signal via a 1:20 expansion ratio.
• Supports dual interface modes including parallel and serial connections for flexible system integration.
• Features a non-inverting input type that simplifies logic control within the driver circuit.

Applications

• High-side load switching in industrial control systems
• Power distribution units requiring multiple channel expansion
• Automotive electronic modules managing bipolar loads

Procurement Notes

Verify component authenticity as this part is obsolete. Confirm RoHS compliance status, as datasheets indicate potential variations between tape and tube packaging versions regarding environmental standards. Ensure the specific suffix matches the required packaging format for your assembly line. Cross-reference pinouts carefully when integrating into existing designs due to the discontinued status.

Selection Notes

Select this component when a single control line must manage multiple high-side loads efficiently. The 1:20 ratio reduces pin count compared to individual drivers. Ensure the application requires bipolar switching capabilities and operates within the 3V to 5.5V supply range. Verify that the 40mA per output current rating meets the load requirements without external amplification.

Part Context

The A6812 belongs to the A68xx series of latch drivers from Allegro MicroSystems. This family focuses on expanding control signals to drive multiple power switches. The A6812 specifically offers a higher channel count than lower-ratio variants, making it suitable for dense power management architectures where space and I/O efficiency are critical constraints.

Replacement Considerations

Public confirmed substitute part numbers include MAX6921AWI+ and MAX6921AWI+T from Analog Devices Inc./Maxim Integrated. These alternatives offer similar functionality but require verification of pin compatibility and electrical specifications before implementation.