BTS721L1

Power Switch ICs – Power Distribution SMART 4-CH HI-SIDE PWR SWITCH

BTS721L1 – 4-Channel High-Side Power Switch IC – Infineon Technologies PROFET® Series

The BTS721L1 from Infineon Technologies is a high-reliability 4-channel power distribution switch designed for precision load management in demanding environments. Engineered with automotive-grade robustness, this PROFET® series IC simplifies circuit design while delivering overload protection and real-time diagnostics. PCX ensures genuine Infineon components with rapid shipping and dedicated technical support.

Key Features

• 4 Independent High-Side Outputs (2.5A max per channel)
• Ultra-Low Rds(On): 85mΩ typical for minimal power loss
• Wide Voltage Range: 5V–34V load operation
• Automotive Temperature Rating: -40°C to +150°C (TJ)
• Advanced Protection: Fixed current limiting, over-temperature, over-voltage & open-load detection
• Smart Diagnostics: Status flag reporting & auto-restart functionality

Technical Specifications

This surface-mount IC features a non-inverting On/Off interface and N-channel MOSFET outputs in a compact 20-SOIC package (7.50mm width). Operating without an external Vcc/Vdd supply simplifies integration. Compliant with AEC-Q100 standards, it provides reliable performance in high-vibration environments with its PROFET®-enhanced fault management.

Typical Applications

• Automotive body control modules (lighting, wipers, motors)
• Industrial automation systems and actuator drives
• Power distribution units in embedded computing
• Battery management systems (BMS)
• HVAC and solenoid control circuits

About Infineon Technologies

Infineon Technologies is a global semiconductor leader renowned for innovation in power systems and IoT solutions. With over 50 years of industry expertise, Infineon sets benchmarks in automotive and industrial electronics through cutting-edge R&D and rigorous quality processes.

The company’s PROFET® product line exemplifies its commitment to intelligent power management, offering integrated protection features that reduce system failure rates. Infineon’s components undergo exhaustive automotive validation, making them the preferred choice for mission-critical applications worldwide.

About Power Distribution Switches

Power distribution switches are critical integrated circuits (ICs) that manage electrical loads by acting as electronically controlled “on/off” gates. They protect sensitive downstream components from voltage spikes, short circuits, and thermal overloads while minimizing power dissipation.

High-side switches like the BTS721L1 simplify PCB layouts by eliminating the need for external drivers and reducing component count. Their diagnostic capabilities enable predictive maintenance in systems ranging from vehicle control units to industrial PLCs, enhancing overall system reliability and safety.

Packaging

Available in Tape & Reel (TR) packaging for automated assembly compatibility.

FAQs

Q: Is the BTS721L1 suitable for 24V industrial systems?
A: Yes, its 5V–34V load range supports 24V applications with margin for voltage fluctuations.

Q: What does the “Status Flag” feature do?
A: It provides real-time fault reporting (e.g., over-current or over-temperature) via a dedicated output pin for system diagnostics.

Q: Can this IC drive inductive loads?
A: Absolutely. Integrated clamp diodes handle back-EMF from motors/solenoids, and current limiting protects against inrush.

Q: Is AEC-Q100 compliance necessary for non-automotive use?
A: While designed for automotive, this qualification ensures extreme reliability in harsh industrial environments.

Q: How does “Auto Restart” enhance safety?
A: It automatically resumes operation after transient fault conditions clear, reducing system downtime.

Q: Why choose high-side over low-side switches?
A: High-side switches simplify ground-referenced control and prevent accidental load activation during faults.

Product image is representational. Refer to datasheet for exact dimensions: Download Datasheet

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