NCV78514中文资料1-Channel Automotive LED Driver in H−Bridge configuration. Supports 1.5 A up to 60 V, in TSSOP16−EP.数据手册ONSEMI规格书

描述 Description

The NCV78514 is a part of the onsemi LED driver solution family for the automotive market. It’s main emphasis is on supporting MCU less applications by integrating smart features like derating based on input voltage and temperature of the LED string. The device is optimized for a one channel LED driver unit and is based on a H−Bridge topology with a synchronous Buck switches and asynchronous Boost with external low side NMOSFET and Schottky diode. Supplying in a constant current mode a single LED string between 2 and 20 LEDs. This enables the design of a single PCB design solution or with a separate module approach. The LED string current is set with a current−encoding resistor. The actual current through the LED string is sensed with a sense resistor.

特性 Features

• Support for MCU Less Application
• Integrated Derating Mechanisms
• Fixed Switching Frequency at 400 kHz
• Input Operating Range from 5 V – 21 V
• Warm Start Management below 9 V
• Withstands Load Dump up to 45 V
• Output Voltage Range up to 60 V
• External Programmable Current 200 mA − 1500 mA
• Pulse Width Modulation from 80 Hz to 600 Hz
• LED Current Dimming Frequency 400 Hz
• External NTC / PTC for LED−temperature
• Spread Spectrum
• Status and Error Mode Handling
• AEC−Q100 Qualified and PPAP Capable

应用 Application

• High beam
• Low beam
• DRL
• Position or Park Light
• Turn Indicator
• Fog
• Static Cornering
• Stand-alone exterior light functions
• Ground projected Logo
• Static Grill lighting
• Logo illumination