LDS8621 IXYS Corporation, LDS8621 Datasheet
LDS8621
Related parts for LDS8621
LDS8621 Summary of contents
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... LED Flashlights o LED Flash/Strobe Applications o DESCRIPTION The LDS8621 is a high efficiency multi-mode fractional charge pump with ultra low feedback voltage that can drive up to two high-current LEDs. The inclusion of a 1.33x fractional charge pump TYPICAL APPLICATION CIRCUIT © 2009 IXYS Corp. ...
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... LDS8621 ABSOLUTE MAXIMUM RATINGS Parameter Vin, LEDx, C1±, C2± voltage Vout voltage EN/SET voltage Storage Temperature Range Junction Temperature Range Soldering Temperature RECOMMENDED OPERATING CONDITIONS Parameter Vin Ambient Temperature Range I per LED pin LED Total Output Current Typical application circuit with external components is shown on page 1. ...
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... V and 0.4 V respectively. When any of PWM pins is taken high, the device becomes enabled with maximum LED current at associated LED. To place the LDS8621 into zero current mode, both PWM pins must be held low for more than 30 ms. ...
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... LOW. During power-up device performs internal circuit reset that requires less than 10 µs. To start device, either PWM1 or PWM2 pin should be set logic HIGH. The LDS8621 starts operating in 1x mode, at which the output is approximately equal to the input supply voltage (less any internal voltage losses) ...
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... LDS8621 recognizes this OUT condition as “LED Short” and disables this channel with 750 µA control current. If LED pin voltage is less than (Vout – 1.5V), LDS8621 restores LED current at this particular channel to programmed value Over-Voltage Protection OUT The charge pump’ output voltage V limits at about 6 ...
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... LDS8621 PACKAGE DRAWING AND DIMENSIONS 16-PIN TQFN (HV3), 3mm x 3mm, 0.5mm PITCH SYMBOL MIN NOM A 0.70 0.75 A1 0.00 0.02 A2 0.178 0.203 b 0.18 0.23 D 2.90 3.00 D1 1.40 1.55 E 2.90 3.00 E1 1.40 1.55 e 0.50 typ L 0.35 0.40 Note: 1. All dimensions are in millimeters 2. Complies with JEDEC Standard MO-220 © 2009 IXYS Corp. Characteristics subject to change without notice MAX 0 ...
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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 LDS8621 002–T2 ( 3x3 TQFN, Tape & Reel). 4) For additional package and temperature options, please contact your nearest IXYS Corp. Sales office. © 2009 IXYS Corp. ...
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... LDS8621 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 ...