LDS8681 IXYS Corporation, LDS8681 Datasheet
LDS8681
Related parts for LDS8681
LDS8681 Summary of contents
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... White LED photoflash for digital cameras, o cell phones, Smart Phones, and other portable devices DESCRIPTION The LDS8681 is a high efficiency regulated charge pump with low dropout voltage that can drive two TYPICAL APPLICATION CIRCUIT © 2009 IXYS Corp. Characteristics subject to change without notice LEDs at 400 mA each simultaneously or one LED at 800 mA. Low dropout PowerLite™ ...
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... LDS8681 ABSOLUTE MAXIMUM RATINGS Parameter VIN, LEDx, C1± voltage V voltage OUT EN/SET voltage Storage Temperature Range Junction Temperature Range Soldering Temperature RECOMMENDED OPERATING CONDITIONS Parameter VIN Ambient Temperature Range Typical application circuit with external components is shown on page 1. ELECTRICAL OPERATING CHARACTERISTICS (Over recommended operating conditions unless specified otherwise) V ...
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... LDS8681 TYPICAL CHARACTERISTICS V = 3.6V 800 mA (2 LEDs at 400mA OUT Power-Up in 1-x mode V = 4.2 V, Ch1 – PWM, Ch2 – LED current (400 mA/div), IN Ch3 – Output voltage Operating Waveforms at 1kHz PWM mode 10% Duty Cycle V = 4.2 V, Ch1 – PWM, Ch2 – LED current (400 mA/div) IN LED Current Setting Error vs ...
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... LDS8681 PIN DESCRIPTION Pin # Name 1 V Charge pump input, connect to battery or supply IN 2 C1+ Flying capacitor 1 Positive terminal 3 C1- Flying capacitor 1 Negative terminal 4 EN Device enable (active high) 5 LEDB LEDB cathode terminal 6 LEDA LEDA cathode terminal 7 GND Ground Reference 8 V Charge pump output connected to the LED anodes ...
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... LEDA and in the range from 25 to 400 mA for LEDB. The LDS8681 is in standby mode after applying V voltage until logic HIGH level is applied to EN pin. The device requires approximately 100 µs to wake up ...
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... LDS8681 will restart when input voltage rises above 2.3 V called lockout mode continues fall below IN 1.7 V, LDS8681 device will enter shutdown mode.. To restart device, set EN pin logic low for more than 50 ms and logic high after that.. 6. Open LED Definition When LED becomes an open circuit, device will enter ...
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... LDS8681 PACKAGE DRAWING AND DIMENSIONS 8-PIN TDFN (HV3), 2mm x 3mm, 0.5mm PITCH SYMBOL MIN NOM A 0.700 0.750 A1 - 0.000 A2 0.203 Ref. b 0.180 0.230 D 2.950 3.000 D1 1.750 1.800 E 1.950 2.000 E1 1.550 1.600 e 0.500 Bsc L 0.350 0.400 Note: 1. All dimensions are in millimeters 2. Complies with JEDEC Standard MO-220 © ...
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... All packages are RoHS-compliant (Lead-free, Halogen-free). 2) The standard lead finish is Matte-Tin. 3) The device used in the above example is a LDS8681 008–T2 (2x3 TDFN, Tape & Reel). 4) For additional package and temperature options, please contact your nearest IXYS Corp. Sales office. © 2009 IXYS Corp. ...
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... LDS8681 Warranty and Use IXYS CORP. MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES ...