PT4115

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PT4115

IC LED DRVR BUCK PWM 1.2A SOT89-

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  • Ông. Phần #PT4115
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  • Bảng dữ liệu PT4115 DataSheet
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Thông số kỹ thuật

Part Status Active
Type DC DC Regulator
Topology Step-Down (Buck)
Internal Switch(s) Yes
Number of Outputs 1
Voltage - Supply (Min) 6V
Voltage - Supply (Max) 30V
Voltage - Output 45V
Current - Output / Channel 1.2A
Frequency 1MHz
Dimming PWM
Applications Backlight, Lighting
Operating Temperature -40°C ~ 85°C

Tổng quan

Description

The PT4115 is a highly efficient LED driver designed for constant current applications. It is commonly used in LED lighting solutions due to its ability to provide precise current regulation, ensuring uniform brightness and extended LED lifespan. The device operates in a buck (step-down) converter topology, allowing it to convert a higher input voltage to a lower output voltage suitable for driving LEDs.
Key features of the PT4115 include a wide input voltage range (typically 6V to 30V), adjustable output current, and built-in protections such as over-temperature and over-voltage protection. It also offers a high switching frequency, resulting in smaller external components and improved efficiency.
The PT4115 can be configured for different output currents using a set resistor, making it versatile for various applications, from simple DIY projects to more complex lighting systems. Its simplicity and effectiveness make it a popular choice for designers looking to implement LED technology in their products.

Features

The PT4115 is a high-efficiency, step-down (buck) LED driver designed to provide constant current for driving LED arrays. Key features include:
1. Constant Current Control: Maintains a stable output current for LEDs, ensuring consistent brightness.
2. Input Voltage Range: Supports a wide input voltage range, typically from 6V to 36V.
3. Output Current Adjustable: Allows for easy adjustment of the output current via a single resistor.
4. High Efficiency: Offers high efficiency (up to 95%) to reduce heat generation and improve reliability.
5. Thermal Protection: Includes thermal shutdown features to prevent overheating.
6. PWM Dimming: Supports PWM dimming for flexible brightness control.
7. Compact Package: Available in a compact surface-mount SO-8 package, suitable for space-constrained applications.
8. Low Quiescent Current: Ensures minimal power consumption during idle periods.
Ideal for various LED applications, including automotive, architectural lighting, and backlighting.

Package

The PT4115 is typically available in a compact surface-mount package type, specifically the SOP-8 (Small Outline Package with 8 pins). This package is designed for efficient heat dissipation and ease of integration in electronic circuits.

Pinout

The PT4115 is a constant current LED driver IC with a total of 8 pins. Here’s a brief overview of each pin and its function:
1. VIN (Pin 1): Input voltage supply for the IC.
2. SW (Pin 2): Connection to the inductor; it switches the current to control LED brightness.
3. GND (Pin 3): Ground pin for circuit reference.
4. CSN (Pin 4): Current sense pin for monitoring the inductor current.
5. CSP (Pin 5): Another current sense pin; used to set the current limit.
6. COMP (Pin 6): Compensation pin for stability in the feedback loop.
7. Rset (Pin 7): Connects to a resistor to set the output current for the LEDs.
8. EN (Pin 8): Enable pin to turn the IC on or off.
The PT4115 is widely used in LED lighting applications due to its efficiency and simplicity in design.

Manufacturer

The PT4115 is manufactured by Power Integrations, a semiconductor company specializing in high-performance, energy-efficient power supply solutions. Founded in 1985, Power Integrations is known for its innovations in the field of power electronics, particularly in integrated circuits for switching power supplies. The company focuses on developing products that improve energy efficiency and reduce energy consumption in a wide range of applications, including consumer electronics, industrial equipment, and renewable energy systems. Power Integrations is recognized for its commitment to sustainability and energy conservation, making it a leader in the power management industry.

Application

The PT4115 is a constant current LED driver used in various applications, including:
1. LED lighting (indoor and outdoor)
2. LED strips and modules
3. Automotive lighting
4. Flashlights
5. Decorative and architectural lighting
6. Backlighting for displays
7. Signage and signal lights
Its features include high efficiency, adjustable output current, and thermal protection, making it suitable for diverse LED lighting solutions.

Equivalent

Equivalent products to the PT4115 chip include the LM3406, LT3470, and the MIC2236. These chips also serve as LED drivers and offer similar functionality for constant current control. Be sure to check specific datasheets for variations in features and specifications.

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