Power Switch ICs – Power Distribution Integ. Load Switch

FDC6331L – 2.8A P-Channel Load Switch – onsemi Power Management IC

Optimize your power management design with the onsemi FDC6331L, a high-efficiency power distribution switch engineered for precise load control in space-constrained applications. This General Purpose P-Channel MOSFET IC delivers robust 2.8A current handling with ultra-low 34mOhm Rds(on) resistance, minimizing power loss and heat generation. PCX ensures genuine onsemi components with same-day shipping and dedicated technical support.

Key Features

• Current Rating: 2.8A maximum continuous output
• Ultra-Low Resistance: 34mOhm typical Rds(on)
• Voltage Range: 2.5V to 8V load operation
• Interface: Simple On/Off non-inverting control
• Thermal Resilience: -55°C to +150°C operating temperature (TJ)
• Compact Footprint: SuperSOT™-6 (TSOT-23-6) surface-mount package

Technical Specifications

This single-channel, high-side switch features a P-Channel output with 1:1 input-to-output ratio for straightforward integration. The non-inverting logic accepts direct control signals for seamless power gating. Housed in an industry-standard TSOT-23-6 package, it enables high-density PCB layouts while maintaining thermal stability across industrial temperature extremes.

Typical Applications

• USB power rail switching in consumer electronics
• Battery-powered device load management
• Peripheral power control in embedded systems
• Hot-swap protection circuits
• Low-voltage DC motor drivers

About onsemi

onsemi (ON Semiconductor) is a global leader in energy-efficient power management and sensor technologies. With over 25 years of semiconductor innovation, the company holds ISO/TS 16949 certification and delivers automotive-grade reliability for mission-critical applications.

onsemi’s vertically integrated manufacturing ensures consistent quality from wafer fabrication to final test. Their extensive IP portfolio in power ICs makes them a preferred partner for Fortune 500 companies in industrial, automotive, and computing sectors.

About Power Distribution Switches

Power distribution switches are essential ICs for managing energy flow in electronic systems. They provide controlled switching between power sources and loads, preventing inrush current damage and enabling power sequencing. Unlike mechanical relays, these solid-state devices offer silent operation, near-instantaneous response, and indefinite cycle life.

Modern load drivers like the FDC6331L incorporate advanced protection features while minimizing voltage drop. Their compact SMT packages make them ideal for portable devices, IoT modules, and space-constrained designs where thermal management and efficiency are critical.

Packaging Options

Available in Tape & Reel (TR), Cut Tape (CT), and Digi-Reel® formats for automated assembly compatibility. Specify packaging preference at checkout.

Frequently Asked Questions

Question: What is the typical turn-on delay for this load switch?
Answer: Refer to the datasheet for timing diagrams; typical enable response is under 100µs.

Question: Does this IC include thermal shutdown protection?
Answer: No, the FDC6331L relies on external thermal management via PCB design.

Question: Can it drive inductive loads like small motors?
Answer: Yes, when used with appropriate flyback diodes for voltage spike suppression.

Question: Is this device RoHS compliant?
Answer: All onsemi components shipped by PCX meet current RoHS 3 standards.

Question: What’s the difference between FDC6331 and FDC6331L?
Answer: The “L” suffix denotes lead-free/RoHS-compliant construction; electrical specs are identical.

Question: Do you provide design support for this IC?
Answer: PCX offers complimentary access to onsemi reference designs and application notes with purchase.

⚠️ Note: Product images are representational; refer to datasheets for exact dimensions.

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