MC34848EP8 channelslocalDimmingLEDdriveutensil
The MC34848 is a high efficiency, 8-channel LED driver for LCD backlighting applications.It is designed to support up to 160 mA/channel scan backlight mode, or 80 mA/channel local dimming mode.Set the current reference GND and LED current tolerances with a single resistor accurate to ±1% channel-to-channel and IC-IC.The current in local dimming mode and scan mode is programmable through.Each channel has independent PWM control with 10-bit resolution and high-speed differential interface programming.
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peculiarity
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Drive 8 LED channels with ± current tolerance of 1%
Local dimming mode, scan mode (2/8, 3/8, 4/8, 5/8), test mode
Supports up to 12 LEDs with output voltages up to 45 V
Automotive drive voltage (VOUT) selection: low power consumption with a minimum feedback voltage of 500 mV
Differential interface: initial settings (LED current, FPWM, OVP, etc.) ), PWM data is operating normally
Integrated phase-locked loop (PLL) synchronization: 177 Hz - 1200 Hz in 1.0 Hz steps
10-bit PWM control, dimming ratio per channel: > 1000:1, on-time less than 200 nanoseconds
Microchip century-old electronic technology---
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