MIC5891BWM

Overview

The MIC5891BWM is a high-voltage, high-current integrated circuit designed as an 8-bit serial-input latched source driver. It comprises eight CMOS data latches and control circuitry for common strobe functionality. The device features a bipolar output configuration with a maximum output current of 500mA per channel. It operates within a load voltage range of 5V to 50V and requires a supply voltage (Vcc/Vdd) between 4.5V and 15V. The component utilizes a non-inverting input type and supports both parallel and serial interfaces. It is housed in a 16-SOIC package and is rated for operation across a temperature range of -55°C to 125°C.

Feature Summary

• Integrates eight CMOS data latches with dedicated control circuitry for common strobe operations.
• Provides high-current bipolar sourcing capability suitable for driving heavy loads.
• Supports flexible interface options including both parallel and serial input configurations.

Applications

• High-voltage LED matrix displays
• Industrial solenoid valve control systems
• Latching relay driver circuits

Procurement Notes

Verify the specific suffix 'BWM' against the official Microchip datasheet to confirm the exact operating temperature range and package variant, as suffixes denote specific manufacturing revisions or environmental ratings. Ensure compatibility with the system's logic voltage levels and serial clock speeds before integration. Cross-reference the latest Product Change Notification (PCN) documents for any updates regarding assembly sites or material composition changes that may affect long-term procurement planning.

Selection Notes

Select this component when designing systems requiring individual latching control for multiple high-current loads without continuous power consumption. The 500mA output rating allows direct driving of moderate-power devices, reducing the need for external transistors. Consider the 16-SOIC package dimensions for PCB layout constraints. Evaluate the thermal performance requirements given the wide operating temperature range and potential heat dissipation during sustained high-current operation.

Part Context

The MIC5891 belongs to a family of latched drivers originally developed by Micrel Semiconductor, which was subsequently acquired by Microchip Technology. This lineage ensures continuity in specifications and support. The device serves as a bridge between low-voltage digital logic controllers and higher-voltage analog loads, simplifying board design by integrating latch storage directly with the power switching stage.

Replacement Considerations

MIC5891YWM-TR

FAQ

What is the function of the common STROBE input?

The common STROBE input synchronizes the updating of all eight internal data latches simultaneously, ensuring consistent state changes across all outputs.

Can the MIC5891BWM drive inductive loads directly?

Yes, the bipolar output configuration allows it to source and sink current, making it suitable for driving inductive loads such as relays and solenoids, though external protection diodes are recommended for inductive kickback suppression.