ACNU-4803-500E

Overview

The ACNU-4803-500E is a single-channel high-speed optocoupler from Broadcom Limited, designed for gate drive applications. It features a totem pole output and operates within an industrial temperature range of -40°C to +105°C. Key electrical parameters include a maximum forward current of 20 mA, a typical forward voltage of 1.5 V, and a reverse voltage rating of 5 V. The device provides an output current capability of 50 mA with a power dissipation of 173 mW. It offers fast switching performance with rise and fall times of 6 ns each. The unit is housed in an SOIC-8 surface-mount package and supports an insulation voltage of 5000 Vrms.

Feature Summary

• Integrated Schmitt trigger on the photodetector ensures logic-compatible waveforms without external waveform shaping.
• Totem pole output configuration eliminates the need for external pull-up resistors and enables direct driving of intelligent power modules.
• Minimized propagation delay differences between devices reduce switch dead-time, enhancing inverter efficiency.
• Compact SSO8 package design reduces board area by 40% compared to standard DIP8 packages while maintaining high isolation creepage distances.

Applications

• Intelligent Power Module (IPM) interface isolation
• Isolated IGBT and MOSFET gate drivers
• AC and brushless DC motor drives
• Industrial inverters

Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout and functional variations. Ensure compatibility with required isolation standards such as UL 1577 or IEC 60747-5-5. Confirm that the operating temperature range meets system requirements. Check for RoHS compliance status if environmental regulations apply. Validate packaging type availability for automated assembly processes.

Selection Notes

Select this component when high common-mode rejection and fast switching speeds are critical for gate drive circuits. The integrated Schmitt trigger simplifies design by removing the need for additional signal conditioning components. Consider the compact SSO8 footprint for space-constrained industrial applications. Ensure the 5000 Vrms isolation rating aligns with safety requirements for the target power electronics environment.

Part Context

This device belongs to the ACNU-480x series of high-speed optocouplers manufactured by Broadcom Limited. The series is engineered specifically for demanding power electronics applications requiring robust isolation and rapid signal transmission. It represents a modern alternative to traditional DIP-packaged isolators, offering improved performance metrics and reduced physical dimensions for contemporary circuit board layouts.

Replacement Considerations

Public confirmed substitute part numbers: ACNU-4803-000E.