The FSLH137NYH is a highly integrated Switched-Mode Power Supply (SMPS) power controller manufactured by Fairchild/ON Semiconductor. It's designed to provide a cost-effective and energy-efficient solution for power adapters and auxiliary power supplies. This controller incorporates advanced features to minimize external components and enhance overall system performance.

Applications

• Power adapters for mobile devices
• Auxiliary power supplies in consumer electronics
• Standby power supplies for appliances
• Battery chargers
• LED lighting power supplies
• Set-top boxes

Features

• Integrated PWM Controller: Simplifies design and reduces component count.
• Current Mode Control: Provides excellent line regulation and transient response.
• Built-in Protections: Includes Over Voltage Protection (OVP), Over Current Protection (OCP), Over Temperature Protection (OTP), and Short Circuit Protection (SCP).
• Low Startup Current: Minimizes startup losses and improves efficiency.
• Frequency Hopping: Reduces EMI (Electromagnetic Interference) emissions.
• Burst Mode Operation: Enhances light-load efficiency.
• Soft Start: Reduces stress on components during startup.

Benefits

• High Efficiency: Reduces energy consumption and heat generation.
• Simplified Design: Minimizes external components and PCB space.
• Improved Reliability: Comprehensive protection features enhance system robustness.
• Reduced EMI: Frequency hopping minimizes electromagnetic interference.
• Cost-Effective: Integrated design lowers overall system cost.
• Compact Solution: Ideal for space-constrained applications.

Additional Details

The FSLH137NYH typically operates with a wide input voltage range, usually from 85VAC to 265VAC. It utilizes a current-mode PWM control scheme to provide excellent line and load regulation. The device's built-in protection features, such as OVP, OCP, OTP, and SCP, safeguard the system against various fault conditions. Furthermore, the frequency hopping function reduces EMI emissions, making it suitable for noise-sensitive applications. The burst mode operation improves efficiency at light loads, contributing to overall energy savings. The package is generally a SOP (Small Outline Package) or similar, designed for surface mount technology.