Datasheet > iW7039

iW7039

更新时间： 2023-12-20 18:44:51

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
11页	3846K
描述
High Precision, 32-Channel LED Backlighting Driver with Integrated Current Sinks for High Dynamic Range (HDR) LCD Displays

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iW7039 数据手册

iW7039

32-Channel Internal Current Sink LED

Backlighting Driver

General Description

The iW7039 is a 32-channel, internal current sink, high precision, LED backlighting driver for high

dynamic range (HDR) LCD TVs, monitors and notebook displays. The device combines adaptive

DC/DC feedback control with Dialog’s BroadLED™ digital adaptive switch mode technology to

enable best system efficiency and thermal performance.

The iW7039 integrates the ability to use either analog or digital dimming methods in one device. With

a 10-bit/11-bit global or individual channel analog dimming and 12-bit PWM digital dimming, the

device improved contrast ratio in HDR displays. The current sinks can drive up to 66mA per channel

and have very tightly controlled current accuracy.

A full array or protection circuits are integrated, including built-in LED open/short detection, over

temperature protection and protection during both start-up and normal operation.

Key Features

■

32 channel LED driver, pin map compatible

with 16 channel iW7038

■

3 PWM-generator clock options

□

External H_SYNC(up to 26MHz)

APLL (15MHz to 26.6MHz)

□

Internal Current sink

■

Support 12V or 5V Single power supply

65V max. LED pin rating

DPLL (10MHz), support gaming monitor

VRR (Variable Refresh Rate)

66mA x 100% duty x 32ch output current,

support channel grouping.

■

26.6MHz Max SPI with Daisy chain

Programmable LED open/short detection

threshold and protection

■

12-bit PWM dimming.

10-bit global and independent analog

dimming (I-dimming), optional

66mA/44mA/22mA full range.

■

Programmable over temperature protection

Optional Key registers write protection with

password

■

Head mode with optional off time control.

■

Optional data packet CRC/CHECKSUM for

noisy SPI

Optional 350/650/950/1600ns PWM output

slew rate.

Fault interrupt output (open drain, need

external pull up)

■

Optional 0.5ms to 10ms (0.5ms per step),

LED current rising and falling slop control in

analog dimming.

-20 to +85°C operating ambient temperature

range

■

44Hz to 32KHz V_SYNCinput, 44Hz to 64KHz

PWM output.

■

145°C max. operating junction temperature

Package: 7mm x 7mm QFN48-EP package

9-bit adaptive external DC/DC feedback

control

Applications

■

Notebook

Monitor

Product Summary

Revision 1.1

10-Feb-2022

CFR0011-120-00 Rev 4

1 of 11

12 3 4 5 6 7...11

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