View ZXLD1350_1156854.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

ZXLD1350 Advance information 350mA LED driver with internal switch
Description
The ZXLD1350 is a continuous mode inductive stepdown converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates from an input supply between 7V and 30V and provides an externally adjustable output current of up to 350mA. Depending upon supply voltage and external components, this can provide up to 8 watts of output power. The ZXLD1350 includes the output switch and a highside output current sensing circuit, which uses an external resistor to set the nominal average output current. Output current can be adjusted above, or below the set value, by applying an external control signal to the `ADJ' pin. The ADJ pin will accept either a DC voltage or a PWM waveform. Depending upon the control frequency, this will provide either a continuous or a gated output current. The PWM filter components are contained within the chip. The PWM filter provides a soft-start feature by controlling the rise of input/output current. The softstart time can be increased using an external capacitor from the ADJ pin to ground. Applying a voltage of 0.2V or lower to the ADJ pin turns the output off and switches the device into a low current standby state. The device is assembled in a TSOT23-5 pin package.
Features
* * * * Simple low parts count Internal 30V NDMOS switch 350mA output current Single pin on/off and brightness control using DC voltage or PWM Internal PWM filter Soft-start High efficiency (up to 95%*) Wide input voltage range: 7V to 30V 40V transient capability Output shutdown Up to 1MHz switching frequency Inherent open-circuit LED protection
Applications
* * * * * Low voltage halogen replacement LEDs Automotive lighting Low voltage industrial lighting LED back-up lighting Illuminated signs
* * * * * * * *
*
Using standard external components as specified under electrical characteristics. Efficiency is dependent upon the number of LEDs driven and on external component types and values.
Pin connections
Typical application circuit
TSOT23-5 Top view
Provisional issue 1 - April 2006
(c) Zetex Semiconductors plc 2005
www.zetex.com
ZXLD1350
Advance information
To receive the full data sheet when available please complete the update service form at http://www.zetex.com/3.0/stage2.asp?pno=ZXLD1350&t=a
Europe Zetex GmbH Streitfeldstrae 19 D-81673 Munchen Germany Telefon: (49) 89 45 49 49 0 Fax: (49) 89 45 49 49 49 europe.sales@zetex.com
Americas Zetex Inc 700 Veterans Memorial Highway Hauppauge, NY 11788 USA Telephone: (1) 631 360 2222 Fax: (1) 631 360 8222 usa.sales@zetex.com
Asia Pacific Zetex (Asia Ltd) 3701-04 Metroplaza Tower 1 Hing Fong Road, Kwai Fong Hong Kong Telephone: (852) 26100 611 Fax: (852) 24250 494 asia.sales@zetex.com
Corporate Headquarters Zetex Semiconductors plc Zetex Technology Park, Chadderton Oldham, OL9 9LL United Kingdom Telephone (44) 161 622 4444 Fax: (44) 161 622 4446 hq@zetex.com
For international sales offices visit www.zetex.com/offices Zetex products are distributed worldwide. For details, see www.zetex.com/salesnetwork This publication is issued to provide outline information only which (unless agreed by the company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contact or be regarded as a representation relating to the products or services concerned. The company reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service.
Provisional issue 1 - April 2006
(c) Zetex Semiconductors plc 2005
www.zetex.com

▲Up To Search▲

Price & Availability of ZXLD1350

	To Download ZXLD1350 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .