Product Overview

PT4115-MS is a step-down LED constant current driver adopting continuous inductor current conduction mode, designed for driving single or multiple series-connected LEDs. With an input voltage range of 5.5-30V and adjustable output current up to 1A, it supports driving tens of watts of LED loads. The chip integrates a power switch and high-side current detection circuit, supports PWM and analog dimming, enters low-power standby when the DIM pin voltage is below 0.3V, and features intelligent over-temperature protection, providing efficient and reliable driving for LED lighting systems.

Key Features

• High-Precision Current Control: ±3% current accuracy with high-side current detection ensures LED brightness consistency, featuring excellent load and line regulation.
• High-Efficiency Power Conversion: 96% conversion efficiency with built-in 450mΩ low on-resistance MOSFET reduces power consumption and heat, enhancing system reliability🔶2-20🔶.
• Wide-Range Dimming Capability: Supports 0.5-2.5V analog dimming and up to 20kHz PWM dimming, compatible with various brightness adjustment needs.
• Simplified Peripheral Design: Hysteretic control architecture eliminates the need for additional loop compensation components, reducing BOM cost with minimal external parts.
• Multiple Protection Mechanisms: Integrated 150℃ intelligent over-temperature protection, 5.1V under-voltage lockout, and 2000V ESD protection ensure safe operation under abnormal conditions.
• Technical Specifications

Technical Specifications

Typical Applications

• LED Lighting Replacement: Suits 1-3W low-voltage LED spotlights to replace traditional halogen lamps, achieving improved light efficiency for home and commercial lighting.
• Automotive Lighting Systems: Wide input voltage adapts to vehicle power (5.5-30V), supporting PWM dimming for dashboard and tail light brightness control.
• Industrial Signal Indication: Provides stable driving for LED signal lamps and standby lights, with built-in over-temperature protection for long-term operation in harsh industrial environments.
• Portable Device Lighting: Low standby power and wide input voltage suit battery-powered scenarios like handheld lamps and emergency lighting.

Why Choose PT4115-MS？

• High-Precision Current Driving: ±3% current accuracy exceeds industry average, ensuring LED brightness consistency and reducing light decay.
• Energy-Efficient Design: 96% efficiency minimizes system heat, paired with low on-resistance MOSFET for high power density applications.
• Flexible Dimming Experience: Supports analog and PWM dimming modes, with up to 20kHz PWM frequency for versatile brightness adjustment.
• Minimal Peripheral Components: Hysteretic control eliminates loop compensation, reducing external parts by 30% to shorten R&D cycle and cost.
• Reliability Assurance: 150℃ over-temperature protection, 2000V ESD protection, and under-voltage lockout adapt to complex working environments.

SUNTOP COMPANY INTRODUCTION

Founded in 2000, Suntop is one of the leading global distributors of electronic
components, dedica ted to providing comprehensive procurement and supply chain services to the global electronics manufacturing industry. Our services include distribution, spot trading, PPV cost-saving projects, and inventory management. We not only offer high-quality products but also strive to assist our clients in achieving optimal solutions with minimal time and cost.
As a trusted partner for numerous OEMs, ODMs, CEMs, and EMS companies worldwide, our professional team manages millions of component records from thousands of trading partners across dozens of countries daily through our company database. We maintain close business relationships with major factories and distributors in North America, Europe, and Asia to ensure that our clients stay ahead in a highly competitive market.