PT4115B89E 30V 1.2A Step-Down High Brightness Led Driver IC

PT4115B89E 30V 1.2A Step-Down High Brightness LED Driver IC is a compact constant current LED driver controller with an integrated power MOSFET, designed for driving high-brightness LEDs. It features a wide input voltage range, internal over-temperature protection, and PWM/analog dimming capabilities, making it ideal for efficient LED lighting applications.

Key Features:

• Integrated Power MOSFET: Built-in 40V 1.2A switch for compact design
• Wide Input Voltage Range: Operates from 6V to 30V input supply
• Constant Output Current: Drives high-brightness LEDs up to 1.2A
• PWM and Analog Dimming: Dual dimming control with external signal
• Built-in Protection: Thermal shutdown, open LED protection, and current limiting

Technical Specifications:

• Input Voltage Range: 6V to 30V DC
• Output Current: Up to 1.2A (constant current)
• Switching Frequency: 1MHz (typical)
• Efficiency: Up to 97%
• Thermal Shutdown: 150°C (typical)
• Control Methods: PWM or DC voltage dimming

Mechanical Specifications:

• Package Type: SOT89-5
• Mounting: Surface-mount (SMD)
• Lead Finish: RoHS compliant

Dimensions:

• Body Size: ~4.5mm × 2.5mm
• Height: ~1.5mm
• Pin Pitch: 1.5mm (typical)

Pinout and Wiring:

• Pin 1 (SW): Output switch (to LED cathode)
• Pin 2 (GND): Ground
• Pin 3 (DIM): Dimming control input (PWM or analog)
• Pin 4 (CS): Current sense input
• Pin 5 (VIN): Input supply (6V–30V)

Datasheet Reference:

• Search online for “PT4115B89E LED driver datasheet iFuture Technology”

Applications:

• LED Lighting: Constant current driver for high-power LEDs
• Automotive: Daytime running lights (DRL) and interior lighting
• DIY Projects: Custom LED strips and matrix drivers
• Solar Lighting: Efficient LED driver for solar-based systems

Equivalent Models:

• PT4115: Standard variant with same electrical performance
• BP5131: Similar 30V LED driver IC
• MT4098: Constant current step-down LED driver
• QX9910: Drop-in alternative with similar features

Package Includes:

• 1 x PT4115B89E Step-Down LED Driver IC (SOT89-5)