Electronic Components Datasheet Search |
|
ZXLD381 Datasheet(PDF) 7 Page - Diodes Incorporated |
|
ZXLD381 Datasheet(HTML) 7 Page - Diodes Incorporated |
7 / 9 page ZXLD383 ZXLD383 Document number: DS32189 Rev. 3 - 2 7 of 10 www.diodes.com May 2010 © Diodes Incorporated A Product Line of Diodes Incorporated Application Examples Apart from the Garden Light application circuit shown on the front page of this datasheet, the ZXLD383 may be used in many other ways. The following circuits and notes show some other possibilities and give typical performance details. Standard operating mode The following circuit demonstrates how few components are required to produce a light source using the ZXLD383. Operating from a single cell, this simple circuit is suited for use in car key fobs, novelty products etc. where small size and low cost are critical aspects. By directly wiring the ENA pin to VCC, the part is permanently enabled once a power supply is provided. The ZXLD383 is highly tolerant of supply ripple so no decoupling of VCC should be needed in a compactly constructed circuit. Also, the part’s capability of operating with a VCC below 0.9V means that this simple circuit will make the best use of available battery capacity. The attached table shows the average LED currents that can be obtained using a range of inductor values. Also shown are the peak currents required to achieve the given currents. Notes: VLED = 3.5V Low Ripple LED Current Mode It is possible that the peak LED current required to achieve a given average current is either too high for the LED of choice or it leads to some loss of efficiency (due to LED resistance losses). In these cases, just two extra low cost components can be added to provide a low ripple current supply for the LED. The Schottky diode D1 and capacitor C1 rectifies and smoothes the output of the ZXLD383 giving a low ripple current supply to the load LED. Of course, this circuit could also be used to power loads other than LEDs. Notes: VLED = 3.5V, D1 = ZHCS1000, C1 = 1µF (low ESR) LILED(peak) ILED(avg) (uH ) (m A) (m A ) 47 45 8.5 22 100 17.3 10 210 34 6.8 330 50 4.7 415 63 ZXLD 383 3 2 1 4 EN A GN D VOU T 5 VC C L1 1.5V LED NC LILED (uH ) (m A) 47 7.5 22 15.5 10 31 6.8 46 4.7 58 D1 LE D C1 Z XLD 383 3 2 1 4 EN A GN D VO U T 5 VC C L1 1.5 V NC |
Similar Part No. - ZXLD381 |
|
Similar Description - ZXLD381 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |