The U3500BM is an integrated circuit manufactured by TEMIC Semiconductors. It is primarily designed for use in remote control systems, specifically for infrared (IR) remote control applications. This IC incorporates various functions necessary for encoding and transmitting control signals via IR, making it a crucial component in devices such as televisions, DVD players, and other consumer electronics.

Applications

• Television remote controls
• DVD player remote controls
• Set-top box remote controls
• Audio equipment remote controls
• General-purpose infrared remote control systems

Features

• Infrared (IR) signal encoding: The U3500BM encodes control signals into a format suitable for transmission via IR light.
• Carrier frequency generation: It generates the necessary carrier frequency for IR transmission, ensuring compatibility with IR receivers.
• Modulation: The IC modulates the encoded signals onto the carrier frequency for efficient IR transmission.
• Low power consumption: Optimized for battery-powered remote control applications, minimizing power drain.
• Multiple channel support: Supports multiple channels for controlling different functions or devices.
• Key debounce: Prevents multiple signals from being sent due to key bounce, ensuring accurate control.

Benefits

• Simplified remote control design: Integrates key functions for IR remote control, reducing the need for external components.
• Improved reliability: Built-in key debounce feature enhances the reliability of control signals.
• Extended battery life: Low power consumption contributes to longer battery life in remote control devices.
• Compact solution: The integrated design enables more compact remote control designs.
• Cost-effective: Provides a cost-effective solution for IR remote control applications.

Additional Details

The U3500BM operates within a specified voltage range, typically 2.0V to 5.5V, making it suitable for various battery-powered applications. The output signal is designed to drive an IR LED, enabling the transmission of control signals. The IC's internal oscillator provides the timing signals required for encoding and modulation. Detailed specifications regarding carrier frequency, modulation scheme, and encoding format can be found in the TEMIC Semiconductors datasheet for the U3500BM.