STMicroelectronics

TDE1767DP

TDE1767DP Description

The TDE1767DP from STMicroelectronics is a bipolar high-side power driver designed for controlling relays and solenoids in industrial and automotive applications. Housed in an 8-pin DIP package, this obsolete but robust component operates with a load voltage range of 6V to 45V and delivers a maximum output current of 1.2A. Unlike many modern drivers, it requires no external supply voltage (Vcc/Vdd), simplifying system design. Its 1:1 input-to-output ratio ensures straightforward interfacing, while built-in adjustable current limiting and over-temperature protection enhance reliability in demanding environments.

TDE1767DP Features

• Output Type: Bipolar high-side driver, optimized for inductive loads like relays and solenoids.
• Protection Mechanisms: Adjustable current limiting and thermal shutdown prevent damage from overloads or faults.
• Wide Voltage Range: Supports 6V–45V loads, making it versatile for 12V/24V automotive or industrial systems.
• No Vcc/Vdd Required: Eliminates the need for an auxiliary power supply, reducing BOM complexity.
• Robust Packaging: Through-hole 8DIP with MSL 1 (Unlimited) moisture sensitivity, suitable for harsh environments.
• Compliance: ROHS3 and REACH unaffected, meeting environmental and regulatory standards.

TDE1767DP Applications

• Automotive Systems: Ideal for driving solenoids in fuel injection, transmission control, or HVAC actuators.
• Industrial Controls: Reliable switching for PLCs, motor starters, and electromechanical relays.
• Power Management: Used in load distribution circuits where high-side switching and fault protection are critical.
• Legacy Equipment Maintenance: Due to its obsolete status, it remains valuable for repairing or upgrading older systems.

Conclusion of TDE1767DP

While the TDE1767DP is no longer in production, its simplicity, durability, and integrated protections make it a compelling choice for legacy designs or applications requiring high-side bipolar drivers. Its wide operating voltage and lack of external supply dependency distinguish it from newer ICs, particularly in cost-sensitive or space-constrained scenarios. Engineers maintaining older systems or seeking proven reliability in relay/solenoid driving will find this component exceptionally useful.