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BTS728L2

BTS728L2 Description

The BTS728L2 from Infineon Technologies is a high-side power switch belonging to the PROFET® series, designed for general-purpose load driving applications. This obsolete but robust IC integrates two N-channel MOSFETs in a surface-mount PDSO-20 package, delivering up to 3.6A per channel with a low typical Rds(on) of 50mΩ. Operating within a 4.75V to 41V load voltage range, it eliminates the need for an external supply voltage (Vcc/Vdd), simplifying system design. The device is REACH unaffected and complies with ECCN EAR99 and HTSUS 8542.39.0001, making it suitable for global deployments. Its tape & reel (TR) packaging ensures compatibility with automated assembly processes.

BTS728L2 Features

• High-Side Configuration: Enables direct control of loads without additional circuitry.
• Integrated Protections: Includes fixed current limiting, open-load detection, over-temperature, and over-voltage shutdown for enhanced reliability.
• Status Flag: Provides diagnostic feedback for fault conditions, improving system monitoring.
• Low On-Resistance: 50mΩ Rds(on) minimizes power dissipation and improves efficiency.
• Wide Voltage Range: Supports 4.75V–41V loads, ideal for automotive and industrial applications.
• 1:1 Input-to-Output Ratio: Simplifies logic-level interfacing.
• MSL 1 (Unlimited): No moisture sensitivity concerns during storage or handling.

BTS728L2 Applications

The BTS728L2 excels in automotive systems (e.g., ECU loads, lighting, and actuators), industrial automation (relay/solenoid drivers), and power distribution modules requiring robust fault protection. Its open-load detection is critical for safety-critical systems, while the high current capability suits motor control and heater circuits. The absence of a Vcc requirement makes it ideal for battery-powered or space-constrained designs.

Conclusion of BTS728L2

While marked obsolete, the BTS728L2 remains a high-performance solution for high-side switching with superior protection features and efficiency. Its low Rds(on), diagnostic capabilities, and wide voltage range make it a preferred choice for legacy designs in automotive and industrial sectors. Engineers seeking alternatives should consider newer PROFET® variants with similar specs but active status.