Zetex single cell led driver

Value manufacturer contact details u1 zxsc310e5 led driver zetex. This means the zxsc310 is compatible with single nimh, nicd or alkaline cells, as well as multicell or liion batteries. Im wondering if anyone has implemented the maxbrightness single cell led driver circuit described at zetex. Diodes low voltage dcdc high brightness led drivers are targeted at battery powered systems for general illumination applications. Note the difference between this topology and the topology shown in figure 1. Automotive lighting and zetex led driver solutions are not only, ma led oled boost bias 1. The recent introduction of the luxeon star highpower light emitting diode ls has sparked some interest in using it to replace the conventional incandescent and halogen bulbs currently found in most flashlights. Since the power supply is a single cell with a voltage between near zero and 1. Zxld383et5ta in reel by diodes incorporated led drivers.

The single cell board was made by adding two pnp transistors, three resistors and a capacitor to the two cell circuit. The luxeon star led and the zetex zxsc300 freeservers. Ref value part number manufacture comments u1 na zxsc300e5 zetex plc single cell converter, sot235 q1 na fmmt617 zetex plc low vcesat npn, sot23 q14 na fmmt619 zetex plc low vcesat. The ic generates constant current pulses that are ideal for. Zetex zxsc400 led driver boost converter datasheet. This means the zxsc310 is compatible with singlenimh, nicd or alkaline cells, as well as multicell orliion batteries. Offer zxld74est20tc zetex from kynix semiconductor hong kong limited. Sufficient voltage for flashing a light emitting diode is generated with cell voltage down to 1. The led is connected across the transistor collector emitter junction so the collector voltage shown in fig 4 is the same as the led voltage. A typical white led has its best powerefficiency combination at about 20ma, and needs about 3. The zxsc300310 are constant power converters primarily focused at single or dual cell white led driving in flashlight and garden light applications.

The ic generates constant current pulses that are ideal for driving single or multiple leds over a wide range of operating voltages. Currently focused on medical power adapters and would has vision to be top global medical power adapter in the next 35years. When mn is off, the current in l1 continues to flow via d1 and the leds back to v in. This means the zxsc310 is compatible with single nimh, nicd or alkaline cells. This solution is optimised for a two cell input of 3v.

Single or multi cell led driver solution summary the zxld381 is a single cell led driver designed for applications where stepup voltage conversion from a very low input voltage is required. Zxld381 single and multicell led driver solution zetex semiconductors plc. The zxsc310 is a single or multicell led driver designed for lcd backlighting applications. Zetex single or multi cell led driver solution,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The zxsc300 is a single or multi cell led driver designed for applications where stepup voltage conversion from very low input voltages is required. Zetex semiconductors reserves the right to alter, without notice, specifications, design, price or conditions of supply of any product or. Zxsc300e5ta in reel by diodes incorporated led drivers. Requiring a single external resistor to very accurately set its output current, the zxld50 from zetex semiconductors simplifies high power led driving. Lyt0002p power integrations ic led driver offline 146ma 8dip learn more. Single and two cell white led drivers without inductors. Zxld381fhta datasheet, zxld381fhta datasheets, zxld381fhta pdf, zxld381fhta circuit. As3644zwlt ams ic led driver rgltr dim wlcsp learn more. The zxld383 is a single or multi cell led driver designed for applications requiring stepup voltage conversion from a very low input voltage.

The circuit generates constant current pulses that are ideal for driving single or multipleledsoverawiderangeofoperatingvoltages. Single or multi cell led driver with enablerectifier. Consult diodes incorporateds entire led driver catalogue on directindustry. Diodes incorporated zxsc300e5ta led drvr 1segment 1. The zxsc380 is a highly integrated single or multi cell led driver for applications where stepup voltage conversion from a very low input voltage is required. Zxsc310 single or multi cell led driver with shutdown function. Single or multi cell led driver solution ponsetup77s blog. This means the zxsc310 is compatible with single nimh, nicd, or alkaline cells as well as multicell or lithiumion batteries. Zetex, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Zxsc300 singlemulti cell led driver zxsc310 singlemulti cell led drive with shut down zxsc310 with reverse polarity protection zxsc300 zxsc310 a high power led driver for low voltage halogen replacement zxsc400 led driver with shut down. With this topology the tps60300 only generates a 3.

The input voltage range of the device is between 0. The zxsc100 can be used to drive led applications with low input voltage and it does it with optimal efficiency. The zxsc310 is a single or multi cell led driver designed for lcd backlighting applications. To view the application note, click on the url below. Zxsc310 datasheet single or multi cell led driver with. Single or multi cell led driver with enablerectifier input for solar charged lamp applications description summary the zxld383 is a single or multi cell led driver designed for applications requiring stepup voltage conversion from a very low input voltage. In such low duty cycle applications batteries will last for months to years of continuous operation. Zxld381 datasheet, zxld381 datasheets, zxld381 pdf, zxld381 circuit. The proposed smps led driver circuit is extremely versatile and specifically suited for driving high watt leds. The device features a shutdown control, resulting in a. Zetex zxsc310 led driver solution for lcd backlighting. Find parts, products, suppliers, datasheets, and more for. The current decays at a rate determined by the leds and diode forward voltages to produce a falling voltage at the input of the comparator. It is designed to connect to a single cell battery, led, and solar panel, with just a single small inductor for stepping up the voltage.

Device descriptionthe zxsc310 is a single or multi cell led driverdesigned for lcd backlighting applications. The led current which is programmed with a single resistor changes by typically less than 1% over the liion supply range. The zxsc300 is a pfm controller ic that drives an external zetex switching transistor with a very low saturation resistance. Single or multi cell led driver solution, zxld381 datasheet, zxld381 circuit, zxld381 data sheet. Zetex zxsc380 single or multi cell led driver solution.

This pin is f6 swl i also used to sense the output voltage for open led protection. Pmic led drivers ic led driver rgltr dim 20tssop 0 part number must be three character at least. White led driving multiple led driving solar equipment. Led anode cathode the heart of this kit is the tiny zxld383 led driver ic from zetex. One such popular flashlight is the 2aa mini maglite minimag, which has a head about 18mm in diameter and 23mm in length.

Zetex semiconductors highperformance semiconductor. Because the ic is too small to use on its own, we mount it on a small ic. Fuhua electronic is leading manufacturer of power adapters for 30yrs in partnership with huawei, nokia, philips, panasonic, and other top brands. However being a nonisolated topology does not provide safety from electric shocks at the led side of the circuit apart from the above drawback, the circuit is flawless and is virtually protected from all possible mains surge related dangers. Connect the inductor from the supply to the swl pin. The linear chip looks to have an advantage here, dimming all the way to off, instead of zetex 10 per cent lower limit. Led flashlights and torches white led driving multiple led driving ordering information device reel width size zxsc310e5ta 180mm device markings c310 package sot235 issue 3 september 2007 the zxsc310 is a pfm dcdc controller ic that drives an external zetex switching transistor with a very low saturation resistance. Like linear techs neat ltc3490 350ma led boost driver, taking the adjust pin close to the negative rail puts the chip into lowpower shut down of a few microamps.

The circuit generates constant current pulses that. Single cell dcdc converter drives leds electronic design. The zxld381 is a single cell led driver designed for applications where stepup voltage conversion from a very low input voltage is required. The led current is set to approximately 70ma at vin for a white led with a forward voltage of 3. Whenthevoltageat thes tdn pinbetween1vand8vandalsoopencircuit, the zxsc400 is enabled and the driver is in normal operation. For very simple low voltage led indication applications, a single cell boost regulator is also due for release the zxsc380. Ncl30082b2dr2g on semiconductor ic led dvr curr mode 8soic learn more. Operating from an input supply of between 7v and 30v, the driver can produce an adjustable output current of up to. I v r led fb led where v fb 300mv rled selection table shutdown control the zxsc400 offers a shutdown mode that consumes astandbycurrentoflessthan5 a. In this circuit are 7 series leds so we need a driver circuit that will provide about 23v at 20ma, when fed from a 1.