ZXSC300 - Single or multi-cell LED driver solution

Product description The ZXSC300 is a single or multi cell LED driver designed for applications where step-up voltage conversion from very low input voltages is required. These applications mainly operate from single 1.5V or 1.2V battery cells. The circuit generates constant current pulses that are ideal for driving single or multiple LED's over a wide range of operating voltages.

Datasheet Issue 4 - Sep 2007 Subscribe to our RSS datasheet feed Click to read the latest disclaimer information for Zetex parts.

Features 94% efficiency Minimum operating input voltage 0.8V Fixed output current Low saturation voltage switching transistor SOT23-5 package

Applications LED flashlights and torches LED backlighting White LED driving Multiple LED driving Solar equipment

Ordering information

Order reference	Package	Part mark	Status	Reel size	Quantity per reel	Tape width	Price ($) 1k†	Purchase
ZXSC300E5TA	SOT23-5	C300	Active	7"	3000	8mm	0.320

† Indicative/budgetary information

This product is Pb-free/ROHS - compliant (EC directive 2002/95/EC).
For more information, click here

Pin out

SOT23-5 Pinout details are only provided for active Zetex parts.

Design tools

Application notes AN44 - Application note for the ZXSC300 / ZXSC310 high power LED drivers - for low voltage halogen replacement. AN50 - Feed forward compensation for ZXSC300 LED driver AN65 - Using the ZXSC310 to drive high power LEDs from 2 alkaline cell with hysteretic UVLO Design notes DN73 - ZXSC300 step down converter for 3W LED. DN81 - Lighting design note handbook Mathematical simulations ZXSC300 Feed Forward calculator The above calculator is in MS Excel. To avoid problems whilst saving, we recommend selecting the "Save" option at the prompt to save the file to your local PC then opening it, rather than opening the file directly in your browser. Spice model

Applications

Lighting Halogen replacement LED tail light Single LED =1W flashlight Single LED =5W flashlight Power management Single LED =1W flashlight Single LED =5W flashlight

Package information

SOT23-5 Package information (207 Kb) containing Package dimensions Pad layout Reflow Soldering Profile (88 Kb) Wave Soldering Profile (87 Kb) Moisture Sensitivity Level for ZXSC300 = 1

Chemical content reporting SOT23-5 epoxy die attach material datasheet (193 Kb) SOT23-5 epoxy die attach ICP analysis (1.3 Mb)

Reliability information SOT23-5 Reliability data (32 Kb)

Press release

94% efficiency for white LED driver

Articles

Replacing Halogen low voltage lighting with LEDs LED drivers bring new dimensions to mobile design