TLP7820(A-LF4,E

Overview

The TLP7820(A-LF4,E) is a single-channel optically isolated amplifier manufactured by Toshiba Semiconductor and Storage. It features an SOIC-8 package with wide lead spacing for enhanced creepage distance. The device operates on a supply voltage range of 3 V to 5.5 V, consuming typical currents of 8.6 mA on the primary side and 6.2 mA on the secondary side. Key electrical specifications include a bandwidth of 230 kHz, a gain accuracy of ±0.5%, and an input offset voltage of 900 µV. It provides high isolation performance with a rated insulation voltage of 5000 Vrms and a common-mode transient immunity of 15 kV/µs.

Feature Summary

• Provides high precision analog signal transmission across isolation barriers with low power consumption suitable for battery-operated or energy-efficient systems.
• Features robust common-mode noise rejection capabilities to maintain signal integrity in electrically noisy environments such as motor drives and inverters.
• Utilizes a thin SOIC-8L package design that facilitates flexible printed circuit board layout while maintaining safe working clearance requirements.

Applications

• Motor phase and rail current sensing in electronic motor drives
• Power inverter current and voltage sensing
• High-precision current sensing in industrial automation controllers

Procurement Notes

Verify the specific suffix (A-LF4,E) against official Toshiba documentation to confirm pinout compatibility and gain ranking. Ensure the procurement channel sources genuine components from authorized distributors to avoid counterfeit parts. Confirm RoHS compliance status and packaging type (tube vs. reel) matches your assembly requirements before placing orders.

Selection Notes

Select this component when designing circuits requiring galvanic isolation for precise analog measurements in high-noise environments. It is suitable for applications needing moderate bandwidth and high common-mode rejection. Consider the SOIC-8L footprint constraints and thermal dissipation characteristics during PCB layout planning.

Part Context

This part belongs to the TLP7820 series of optically coupled isolation amplifiers designed primarily for current sensing in electronic motor drives. The series addresses the need for high efficiency and precision in modern industrial control products like AC servo motor controllers and renewable energy power conditioners.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Toshiba's official cross-reference documentation for potential alternatives.