AS3820 datasheet(1/52 Pages) DIALOG

Numer części	AS3820

Szczegółowy opis	16-Channel White LED Controller for LCD Backlight

PDF	52 Pages

Scroll/Zoom	100%

Producent	DIALOG [Dialog Semiconductor]

Strona internetowa	http://www.dialog-semiconductor.com/

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AS3820

16-Channel White LED Controller for LCD Backlight

Rev. 1.1

Datasheet

www.dialog-semiconductor.com

1 of 52

05-Feb-2019

1 Description

The AS3820 is a 16 channel precision LED controller for use in LCD-backlight panels.

Dynamic power feedback controls the external power supply to guarantee best efficiency. Built-in safety features

include thermal shutdown as well as open and short LED detection. The device is programmable via serial interface.

2 Features

● All LED backlight topologies

x

No limit of VLED or ILED, device is not exposed to

high voltage/high current

● Optimum power savings through local dimming

x

16 fully flexible 12 bit PWM generators (period, high

time, delay, reverse)

● Highest brightness uniformity

x

One global high accuracy 10 bit DAC which sets the

LED current (±0.5% accuracy)

● Full platform approach

x

Dedicated device family (AS382x)(1) is available, all

SW compatible

● Global dimming mode available

x

AS3820E is pre-programed to external PWM mode.

VSYNC pin is used as PWM input

● Synchronization with TV frame

x

VSYNC and HSYNC inputs available as well as a

digital PLL integrated(2)

● Lowest BOM

x

Due to 2 pin concept of the output channel: no HV

protection, no cascade FETs

● Digital enhanced DC-DC feedback

x

Feedback function is compatible to every DC-DC

architecture and configurable via SPI(2)

● On chip safety features

x

Short/open LED detection, temperature shutdown,

register lock/unlock, SPI transfer checksum

3 Applications

● The AS3820 is suitable for LED backlighting for LCD

such as TV sets and monitors.

Notes:

Note 1. The device family AS382x includes AS3820 and AS3824.

Note 2. Patent protected

Podobny numer części - AS3820

Producent	Numer części	Arkusz danych	Szczegółowy opis
ams AG	AS3822	125Kb / 2P	8 channel white LED controller for LCD backlight 6??2??7
ams AG	AS3823	123Kb / 2P	6-channel white LED controller for LCD backlight 6??2??7
Renesas Technology Corp	AS3824	334Kb / 2P	16-Channel White LED Controller for LCD Backlight Jul 17, 2024

More results

Podobny opis - AS3820

Producent	Numer części	Arkusz danych	Szczegółowy opis
ams AG	AS3693A	71Kb / 3P	16 channel high precision LED driver for LCD backlight
Analog Devices	ADD5211	167Kb / 6P	Four-String, White LED Driver for LCD Backlight Applications Rev. PrA
Analog Devices	ADD5207ACPZ	428Kb / 16P	Four-String, White LED Driver for LCD Backlight Applications REV. A
ams AG	AS3693B	3Mb / 33P	16 Channel high precision LED driver for LCD Backlight
	AS3693B1	4Mb / 34P	16 Channel high precision LED driver for LCD Backlight
	AS3695A	2Mb / 34P	16 channel white LED driver for LCD backlight
	AS3695C	2Mb / 40P	16 channel white LED controller for LCD backlight
BCD Semiconductor Manuf...	AP3068	393Kb / 15P	WHITE LED DRIVER FOR LCD PANEL BACKLIGHT
ams AG	AS3822	125Kb / 2P	8 channel white LED controller for LCD backlight 6??2??7
ams AG	AS3823	123Kb / 2P	6-channel white LED controller for LCD backlight 6??2??7

More results

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