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Backlighting - LED Drivers

Delivering unrivaled performance at a lower BOM cost

Dialog's DC/DC LED backlight drivers are designed for direct backlit, HDR TVs and monitors, and notebook and automotive displays.

Our patented BroadLED™ adaptive switch technology enables local dimming for applications with many active LED zones and thousands of LEDs. This technology significantly reduces the voltage offset between mismatched LED strings to keep LED brightness uniform from channel-to-channel. It also reduces heat generation and thermal issues for longer lifetime with higher reliability and lowers BOM cost by allowing control of more LED strings per driver IC. Emerging mini LED TVs will also benefit from the cost savings and performance benefits of Dialog’s BroadLED™ technology.

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Features

BroadLED™ Adaptive Switch Mode Technology
  • Reduces Power Dissipation in the Driver
  • Maintains Operation During LED Short with Minimal Temperature Increase
  • Enables Use of Low Cost, Loosely-binned LEDs for Lower BOM Cost
  • High Current Matching - Better than 2% Channel-to-Channel
  • Automatically Adjusts Current Through Each LED String via PWM Modulation
  • Best-in-Class Current Matching with Highest Possible Efficiency
AnyMode™ Technology
  • Improves Picture Quality by Reducing Motion Blur for Faster Image Fade Out
LED Fault Protection
  • Open Circuit, Short Circuit and Over-Temperature
Dynamic Voltage Control of External DC/DC Boosts/Bucks
  • Optimize Efficiency by Modulating the Voltage Applied to the LEDs
  • Multiple Control Signals to Cover All DC/DC Converters in the System
Comprehensive Dimming Options
  • Digitally Controlled PWM Dimming with Three Modes - NTSC, PAL and 3D Game
  • PWM Head and Tail Mode Dimming to Reduce Motion Blur
  • 12-Bit Local Dimming to Improve Contrast Ratio
Backlighting product portfolio
Product Key Feature Applications
iW7016 Not recommended for new designs. See iW7027 or iW7038. Direct and Segment-Edge LED Backlit LCD TVs
iW7019 Not recommended for new designs. See iW7027 or iW7038. Direct and Segment-Edge LED Backlit LCD TVs
iW7027 16-Channel, External Current Sinks LED Driver, Patented 2-pin LED Open/Short Protection and AnyMode™ Dimming 2D and 3D Edge-Lit and Direct-Lit LED TVs
iW7038 16-Channel, Internal Current Sink LED Driver with BroadLED™ technology for thermal performance and AnyMode™ Dimming
LCD Backlighting for HDR Displays and Automobile Displays
iW7039 32-Channel, Internal Current Sink LED Driver with BroadLED™ technology for thermal performance and AnyMode™ Dimming LCD Backlighting for Direct Backlit HDR Displays
AS3812 16-Channel, Highly Accurate, Internal Current Sink LED Driver for UltraHD 4K and HDR Displays LCD Backlighting for 4K/HDR Displays
AS3820 Not recommended for new designs. See AS3824. LED backlighting for LCD - TV sets and monitors
AS3824 16-channel local dimming LED backlight controller HD TVs, UHD TVs, Monitor, HDR Monitors and Displays

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Product ID Package LED Driver Channels Max LED Supply Voltage (V) Controller / Integrated Key Features ILED Average Max (mA) Main Supply Voltage Range Min (V) Main Supply Voltage Range Max (V) DC/DC Converter Interfaces Digital Control Interface Protection Circuits PWM Dimming Frequency PWM Dimming Range Min (%) PWM Dimming Resolution (bits) Pass Device LED Current Accuracy (%) ILED Peak Max (mA) Documents
                                     
iW7023-00-QFN4 QFN48 7x7 16 60 Integrated BroadLEDDynamic Buck/Boost ControlHead/Tail/Center PWM ModulationAdaptive Switch Range - 24%, 48%, 60% 150 9 28 2 SPI LED Open DetectionLED Short DetectionUVLOOTP NTSC 120Hz-2.4kHz, PAL 100Hz-2.4kHz, 3D Game Mode 96Hz-2.4kHz 1 12 FET 2 240 Documentation
iW7019-00-TQ2E TQFP-44-EP 8 65 Integrated Phase-Shift/SPI and 8-bit Analog Dimming 230 9 28 - SPI LED Open Fault DetectionOTPOver-CurrentOver-VoltageUVLO 12-bit PWM dimming range from 0% to 99.9% (or 100% for SPI mode) 0 12 FET 2 392 Documentation
iW7016-00-SO32 SOP-32 6 65 Integrated Tail Mode DimmingIndividual PWM DimmingPhase Shift and 8-bit Analog Dimming 300 9 36 - - LED Open Fault DetectionOTPOver-CurrentOver-VoltageUVLO - 0 12 FET 2 600 Documentation
iW7019-00-SO32 SOP-32 8 65 Integrated Phase-Shift/SPI and 8-bit Analog Dimming 175 9 28 - SPI LED Open Fault DetectionOTPOver-CurrentOver-VoltageUVLO 12-bit PWM dimming range from 0% to 99.9% (or 100% for SPI mode) 0 12 FET 2 244 Documentation
iW7027-00-QFN4 QFN48 7x7 16 No Limit Controller AnyModeGate Sensing Ext MOSFET Protection12-bit PWM Programmable 5 16 2 SPI LED Open Fault DetectionOTPOver-CurrentOver-VoltageUVLOLED ShortLED OpenExternal MOSFET Short Drain-Source 12-bit PWM dimming range from 0% to 99.9% (or 100% for SPI mode) 0 12 FET - Programmable Documentation
iW7027-00-T2QE TQFP-44-EP 16 No Limit Controller AnyModeGate Sensing Ext MOSFET Protection12-bit PWM Programmable 5 16 2 SPI LED Open Fault DetectionOTPOver-CurrentOver-VoltageUVLOLED ShortLED OpenExternal MOSFET Short Drain-Source 12-bit PWM dimming range from 0% to 99.9% (or 100% for SPI mode) 0 12 FET - Programmable Documentation
iW7038-00-QFN4 QFN48 7x7 16 55 Integrated AnyModeBroadLEDHead/Tail/Center PWM Modulation 200 9 16 1 SPI LED ShortLED OpenOTPUVLOMOSFET Short Drain-Source 13-bit PWM dimming range from 0% to 99.9% 0 13 FET 2 200 Documentation
iW7039-00-QFN4 QFN48 7x7 32 65 Integrated AnyModeBroadLEDHead/Tail/Center PWM Modulation 66 5 16 1 SPI LED ShortLED OpenOTPUVLOMOSFET Short Drain-Source 12-bit PWM individual dimming,from 0% to 99% 0 12 FET 2.5 66 Documentation
iW7028-00-SO32 SOP-32 10 No Limit Controller AnyModeGate Sensing Ext MOSFET Protection12-bit PWM Programmable 5 16 2 SPI LED Open Fault DetectionOTPOver-CurrentOver-VoltageUVLOLED ShortLED OpenExternal MOSFET Short Drain-Source 12-bit PWM dimming range from 0% to 99.9% (or 100% for SPI mode) 0 12 FET - Programmable Documentation
iW7016-01-SO32 SOP-32 6 65 Integrated Tail Mode DimmingIndividual PWM DimmingPhase Shift and 8-bit Analog Dimming - 9 36 - - LED Open Fault DetectionOTPOver-CurrentOver-VoltageUVLO - 0 12 FET - - Documentation
iW7016-02-SO32 SOP-32 6 65 Integrated Head Mode DimmingIndividual PWM DimmingPhase Shift and 8-bit Analog Dimming - 9 36 - - LED Open Fault DetectionOTPOver-CurrentOver-VoltageUVLO - 0 12 FET 2 - Documentation
AS3812A-ZQFT QFN32 5x5 16 30 Integrated 10bit Analog dimming or 12bit individual dimming 190 4 5.5 2 SPI LED ShortLED OpenOTPReg LockUnlock 12-bit PWM individual dimming,from 0% to 100% 0 12 FET 1 190 Documentation
AS3820A-ZQFT QFN48 7x7 16 No Limit Controller 8bit Analog dimming DACDC/DC FB Control Programmable 4.5 5.5 2 SPI LED ShortLED OpenOTPReg LockUnlock 12-bit PWM individual dimming,from 0% to 100% 0 12 FET 1.5 n/a Documentation
AS3820E-ZQFT QFN48 7x7 16 No Limit Controller Default Direct PWM Mode8bit Analog dimming DACDC/DC FB Control Programmable 4.5 5.5 2 SPI LED ShortLED OpenOTPReg LockUnlock 12-bit PWM individual dimming,from 0% to 100% 0 12 FET 1.5 n/a Documentation
AS3824A1-ZQFT QFN48 7x7 16 No Limit Controller 10bit global or 8bit individual Analog dimming DACDC/DC FB Control Programmable 4.5 5.5 2 SPI LED ShortLED OpenOTPReg LockUnlockSPI Checksum 12-bit PWM individual dimming,from 0% to 100% 0 12 FET 1.5 n/a Documentation
AS3824E1-ZQFT QFN48 7x7 16 No Limit Controller Default Direct PWM Mode10bit global or 8bit individual Analog dimming DACDC/DC FB Control Programmable 4.5 5.5 2 SPI LED ShortLED OpenOTPReg LockUnlockSPI Checksum 12-bit PWM individual dimming,from 0% to 100% 0 12 FET 1.5 n/a Documentation

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Brochures
Name Date Version
Automotive Brochure (6.56 MB) 01/01/2020 1.0
IoT Solutions Guide (48.38 MB) 01/01/2020 1.0
Power Conversion Products Selector Guide – English (4.22 MB) 01/12/2019 1.0
Power Conversion Products Selector Guide – Simplified Chinese (4.21 MB) 01/12/2019 1.0

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