ZXSC400E6TA datasheet(7/16 Pages) DIODES

Part #	ZXSC400E6TA

Description	LED DRIVER BOOST CONVERTER

Download	16 Pages

Scroll/Zoom	100%

Manufacturer	DIODES [Diodes Incorporated]

Direct Link	http://www.diodes.com

Logo

7 / 16 page

Open-circuit protection

For applications where the LED chain might go

open-circuit a Zener diode can be connected across the

LED chain preventing over-voltage and possible

damage to the main switching transistor. The Zener

diodes should be selected by ensuring its voltage

rating is higher than the combined forward voltage of

the LED chain. Under open circuit conditions the curren

in the Zener diode defines the output current as:

IZ =

V

R

FB

Z

The circuit example below give an open circuit output

current of 300 A.

Dimming Control

There are four types of dimming control that can be

implemented for the ZXSC400.

Dimming Control using the shutdown pin

The first method uses the shutdown pin. By injecting a

PWM waveform on this pin and varying the duty cycle,

LED current and hence LED brightness can be adjusted.

To implement this method of brightness control on the

ZXSC400, apply PWM signal with amplitude of

between 0.7V and Vcc at a frequency of 120Hz or above

(to eliminate LED flicker). The LED current and hence

LED brightness is linearly proportional to the duty cycle

ratio, so for brightness control adjust duty cycle ratio as

necessary. For example, a 10% duty cycle equates to

10% of full LED brightness.

ZXSC400

ISSUE 1 - JANUARY 2003

7

Similar Part No. - ZXSC400E6TA

Manufacturer	Part #	Datasheet	Description
Zetex Semiconductors	ZXSC400E6TA	195Kb / 16P	LED DRIVER BOOST CONVERTER

More results

Similar Description - ZXSC400E6TA

Manufacturer	Part #	Datasheet	Description
Zetex Semiconductors	ZXSC400	195Kb / 16P	LED DRIVER BOOST CONVERTER
Catalyst Semiconductor	CAT37	168Kb / 13P	CMOS White LED Driver Boost Converter
Catalyst Semiconductor	CAT37	557Kb / 12P	CMOS White LED Driver Boost Converter
ON Semiconductor	CAT37	149Kb / 11P	CMOS White LED Driver Boost Converter February, 2010 ??Rev. 21
Catalyst Semiconductor	CAT4137	302Kb / 14P	CMOS Boost Converter - White LED Driver
ON Semiconductor	CAT37TDI-T3	187Kb / 13P	CMOS White LED Driver Boost Converter Doc. No. MD-5005 Rev. V
	CAT4137TD-T3	251Kb / 16P	CMOS Boost Converter - White LED Driver Doc. No. MD-5012 Rev. C
	CAT4137	170Kb / 15P	CMOS Boost Converter - White LED Driver November, 2011 ??Rev. 3
	CAT4137	179Kb / 16P	CMOS Boost Converter - White LED Driver February, 2010 ??Rev. 2
Texas Instruments	CAT37	248Kb / 13P	[Old version datasheet] CMOS White LED Driver Boost Converter

More results

ZXSC400E6TA Datasheet(PDF) 7 Page - Diodes Incorporated

ZXSC400E6TA Datasheet(HTML) 7 Page - Diodes Incorporated

Similar Part No. - ZXSC400E6TA

Similar Description - ZXSC400E6TA

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Datasheet Download

Link URL