ZXSC400 - LED driver boost converter

Product description The ZXSC400 is a voltage mode boost converter in the SOT23-6 package. Its low feedback voltage allows the current in a chain of LEDs to be set and accurately monitored with a single resistor giving minimal losses. Its excellent load and line regulation means that for the full supply range from lithium-ion cells, the LED current will typically change by less than 1%. Using high efficiency Zetex switching transistors with ratings of 20V and higher allow many LEDs to be chained in series for the best LED current matching possible.

Datasheet Issue 1 - Jan 2003 Subscribe to our RSS datasheet feed Click to read the latest disclaimer information for Zetex parts.

Features 1.8V to 8V supply range Typical output regulation of ±1% Over 80% typical efficiency 4.5µA typical shutdown current Series connection for ultimate LED current matching

Applications White LED backlighting for color LCD panels LED backlighting High performance white LED flashlights and torches General LED driving functions from batteries

Ordering information

Order reference	Package	Part mark	Status	Reel size	Quantity per reel	Tape width	Price ($) 1k†	Purchase
ZXSC400E6TA	SOT23-6	C400	Active	7"	3000	8mm	0.387

† Indicative/budgetary information

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

Pin out

SOT23-6 Pinout details are only provided for active Zetex parts.

Design tools

Application notes AN65 - Using the ZXSC310 to drive high power LEDs from 2 alkaline cell with hysteretic UVLO Design notes DN67 - ZXSC400 solution for 1W high powered LED. DN70 - ZXSC400 driving 2 serial high power LEDs. DN71 - ZXSC400 solution for 5W high powered LED. DN74 - ZXSC400 photoflash LED reference design. DN79 - ZXSC400 1W LED driver. DN81 - Lighting design note handbook DN84 - ZXSC400 Driving 3W high power LEDs DN85 - ZXSC400 1W/3W buck LED drivers Evaluation board user guides ZXSC400EV2 evaluation board user guide ZXSC400EV3 evaluation board user guide ZXSC400EV4 evaluation board user guide ZXSC400EV evaluation board user guide Mathematical simulations Power MOSFET Gate driver 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 LED bulb LCD TFT LED emergency lighting Single LED =5W flashlight LCD TV RGB LED Power management LCD TFT Single LED =5W flashlight LCD TV RGB LED

Package information

SOT23-6 Package information (185 Kb) containing Package dimensions Pad layout Reflow Soldering Profile (88 Kb) Wave Soldering Profile (87 Kb) Moisture Sensitivity Level for ZXSC400 = 1

Chemical content reporting SOT23-6 epoxy die attach material datasheet (54 Kb) SOT23-6 epoxy die attach ICP analysis (1.5 Mb)

Reliability information SOT23-6 Reliability data (32 Kb)

Articles

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