iW7038
16-Channel Internal Current Sink LED Backlighting
Driver for HDR LCD TV/Monitor/Notebook Displays
General Description
The iW7038 is a 16-channel, internal current sink, high precision, LED backlighting driver for high
dynamic range (HDR) LCD TVs, monitors and notebook displays.
It combines adaptive DC/DC or AC/DC feedback control together with Dialog’s patented
BroadLED™ digital adaptive switch mode technology to enable the best system efficiency and
thermal performance.
The iW7038 also offers Dialog’s AnyMode™ comprehensive dimming control, which includes
head/tail/center mode PWM alignments to reduce motion blur. Additionally, it supports 13-bit PWM
dimming and 11-bit analog dimming to improve contrast ratio in HDR applications.
Full protections are included, including built-in LED open/short detection and protection during both
start-up and normal operation.
Key Features
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16 channel LED driver
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Adaptive external DC/DC or AC/DC feedback
control to optimize system power efficiency
Internal current sink MOSFETs
External current sense resisters
PWM-generator clock
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HSYNC (up to 22MHz)
PLL (20MHz)
Single power supply, 12V (9V to 16V range)
50V max. output voltage
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200mA x 100% duty x 16ch output current
capability, support 2 channel grouping
Internal OSC (10MHz)
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16MHz Max SPI with Daisy chain
13-bit max PWM dimming
Optional Key registers write protection with
password, and optional data packet
CRC/checksum for noisy SPI interface
Programmable LED open/short detection
threshold and protection
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range from 0% to 99.9%
1s min. PWM output pulse
Programmable output slew rate for EMI
control (0.35s/0.70s/1s)
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High temperature shutdown and auto recovery
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Enhanced pure digital BroadLED™ mode
Fault interrupt output (open drain, need
external pull up)
11-bit global or 9 bit independent analog
dimming
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HBM +/- 2kV JESD22-A114 -20 at all pins
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LED current and PWM duty update both
synchronized to VSYNC
-20 to +85°C operating ambient temperature
range
46Hz to 32kHz VSYNC input, 46Hz to 32KHz
PWM output
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145°C max. operating junction temperature
Package: 7mm x 7mm QFN48 with EP,
0.5mm pin pitch
Applications
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HDR LCD TV
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HDR NB display
HDR LCD Monitor
Automobile Display
Product Summary
Rev 1.1
23-Feb-2022
CFR0011-120-00 Rev 4
1 of 7
© 2022 Renesas Electronics