PT16751 Overview
The PT16751 is a Headlight LED controller for automotive with high accuracy peak current mode. The device implements a fixed-frequency peak current mode control technique with programmable switching frequency, slope pensation, and soft-start timing. The controller is designed to support a range of step-up or step-down driver topologies.
PT16751 Key Features
- Automotive AEC-Q100, Grade 1 (-40℃~+125℃) Qualified
- Input Voltage: 4.5 V to 65 V
- Output Voltage Range: 3 V to 65 V
- Low Input Offset Rail-to-Rail Current Sense Amplifier
- Better than ±4% LED Current Accuracy over 25°C to 140°C Junction Temperature Range
- High-Side Current Sense Implementations
- High-Impedance Analog LED Current Adjust Input (IADJ) With over 15:1 Contrast Ratio
- Additional Analog LED Current Dimming 2 (IADJ2) for LED Lights overheat Protection with NTC Thermistor
- Over 1000:1 Series FET PWM Dimming Ratio
- Support P-Channel MOSFET drive for LED PWM dimming and LED short protection