onsemi NCL31010 driver
onsemi NCL31010 driver
The ON Semiconductor NCL31010 driver integrates an 802.3bt PoE-PD (Power over Ethernet Powered Device) interface controller, a dual-channel buck converter, and a buck converter LED driver. The NCL31010 integrates all functions required for operation within a PoE system, such as surge phase detection, classification and current limiting. The NCL31010 contains a synchronous step-down DC-DC converter for the main 3.3V system power supply and auxiliary power supply. In addition, the NCL31010 integrates a current-mode step-down DC-DC controller designed for use as an LED driver. This LED driver supports PWM dimming and high bandwidth analog dimming. The NCL31010 supports high power applications up to 90W.
The ON Semiconductor NCL31010 PoE interface LED driver is packaged in a 7.9mm x 7.0mm QFN-48 package and has an ambient operating temperature range of -40°C to +85°C.
NCL31010 Features
Fully compliant with IEEE 3af/at and 802.3bt specifications
Distributed power 90W
Proprietary 100W+ application
Support Autoclass operation
HV hold power PWM output (MPS)
Integrated 3.3V Buck Converter
Integrated adjustable 2.5V--24.0V step-down converter
Integrated High Efficiency Buck LED Driver
Adjustable switching frequency: 44.4kHz--1.0MHz
Deep dimming to zero with 1% accuracy using internal precision 2.4V reference
high linearity
High modulation bandwidth: ~50kHz
Support visual optical communication
NCL31010 standard
Internal DIM DAC for independent LED control when microcontroller re-blinks
Low EMI Reference Design
I2C/SPI interface
High-accuracy diagnostic functions for measuring voltage and current
Protects against LED shorts and opens
LED over/under voltage and over current protection
Chip overcurrent protection
Chip and LED overheating protection
Junction temperature range: -40°C--+125°C
Ambient operating temperature range: -40°C-- +85°C
7.0mm x 7.0mm QFN-48 package, 05mm pitch
Lead-free, RoHS compliant
NCL31010 Application
LED Networked Lighting
visible light communication
Indoor Positioning
Multi-channel LED lighting
