ev24183dq-00b 1a, 55v, programmable frequency white led driver evaluation board ev24183dq-00b rev.1.0 www.monolithicpower.com 1 12/18/2013 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2013 mps. all rights reserved. the future of analog ic technology description the mp24183 is a 55v, 1a, white led driver suitable for either step-down or inverting step-up/down applications. it achieves 1a peak output current over a wide input supply range with excellent load and line regulation. current mode operation provides fast transient response and eases loop stabilization. fault condition protection includes thermal shutdown, cycle-by-cycle peak current limiting, input over voltage protection, open strings protection and output short circuit protection. the mp24183 incorporates both dc and pwm dimming onto a single control pin. the separate input reference ground pin allows for direct enable and/or dimming control for a positive to negative power conversion. the mp24183 requires a minimum number of readily available standard external components and is available in 10-pin 3mm x 3mm qfn packages. MP24183DQ demo boards board number operating mode input (v) led # i led (ma) ev24183dq-00a buck 15~50 3 700 ev24183dq-00b buck- boost 12 3~5 500 ev24183dq-00c boost 12 6~9 500 features ? 1a maximum output current ? unique step-up/down operation (buck- boost mode) ? wide 4.5v to 55v operating input range for step-down applications (buck mode) ? 0.28 ? internal power mosfet switch ? adjustable switching frequency ? analog and pwm dimming ? 0.198v reference voltage ? 5 a shutdown mode ? no minimum led required ? stable with low esr output ceramic capacitors ? cycle-by-cycle over current protection ? thermal shutdown protection ? open strings protection ? input over voltage protection ? output short circuit protection ? available in 10-pin 3x3mm qfn package applications ? general led illuminations ? lcd backlight panels ? handheld computers ? automotive internal lighting ? portable multimedia players ? portable gps devices all mps parts are lead-free and adhere to the rohs directive. for mps green status, please visit mps website under products, quality assurance page. ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc.
ev24183dq-00b 1a, 55v, programmable frequency white led driver ev24183dq-00b rev.1.0 www.monolithicpower.com 2 12/18/2013 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2013 mps. all rights reserved. ev24183dq-00b evaluation board (l x w x h) 5cm x 4.5cm x 0.7cm board number mps ic number ev24183dq-00b MP24183DQ
ev24183dq-00b 1a, 55v, programmable frequency white led driver ev24183dq-00b rev.1.0 www.monolithicpower.com 3 12/18/2013 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2013 mps. all rights reserved. evaluation board schematic mp24183 ev24183dq-00b bill of materials qty ref value description package manufacturer manufacturer p/n 1 c1 1 f ceramic capacitor,100v,x7r 1210 murata grm32er72a105ka01l 2 c2,c3 2.2 f ceramic capacitor,100v,x7r 1210 murata grm32er72a225ka35l 2 c4,c5 1n ceramic capacitor,50v,x7r 0603 tdk c1608x7r1h102k 1 c6 100n ceramic capacitor,50v,x7r 0603 tdk c1608x7r1h104k 1 c7 2.2 f ceramic capacitor,50v,x7r 1210 tdk c3225x7r1h225k 1 d1 b360 diode schottky sma diodes inc. b360a 1 d2 b160 diode schottky sma diodes inc. b160a 1 l1 10 h inductor 3.7a,22m ? sm toko dh124c-1010asw-100m 10 h inductor 3.8a, 35m ? sm cooper dr1040-100-r 10 h inductor 3.8a, 28m ? sm tdk vlf10040-100m3r8 1 r4 1k resistor, 1% 0603 yageo rc0603jr-071kl 2 r1,r5 0 resistor, 1% 0603 yageo rc0603jr-070rl 2 r2,r10 10k ? resistor, 1% 0603 yageo rc0603fr-0710kl 1 r3 75k ? resistor, 1% 0603 yageo rc0603fr-0775kl 2 r6,r8 nc 0805 1 r7 400m resistor, 1% 0805 royalohm 0805f400lt5e 1 r9 180k ? resistor, 1% 0603 yageo rc0603fr-07180kl 1 u1 MP24183DQ mps wled driver, 1a, 55v, frequency programmable qfn3*3 mps MP24183DQ
ev24183dq-00b 1a, 55v, programmable frequency white led driver ev24183dq-00b rev.1.0 www.monolithicpower.com 4 12/18/2013 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2013 mps. all rights reserved. printed circuit board layout figure 1?top layer figure 2?bottom layer
ev24183dq-00b 1a, 55v, programmable frequency white led driver notice: the information in this document is subject to change without notice. please contact mps for current specifications. users should warrant and guarantee that third party intellectual property rights are not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. ev24183dq-00b rev.1.0 www.monolithicpower.com 5 12/18/2013 mps proprietary information. patent protected. unauthorized photocopy and duplication prohibited. ? 2013 mps. all rights reserved. quick start guide 1. connect the load (3~5leds) to the output. the anode of the load to ?led+? and the cathode of the load to ?led -?. 2. connect the input voltage source to the input vin and ingnd. the input voltage source should be initialed 12v. 3. connect the en or dimming signal to en/dim pin. for pwm dimming, connect the pwm signal to en/ dim pin, the high level should be higher than 1.4v, the low level should be lower than 0.7v. for analog dimming, connect a dc dimming signal in range of 0.7v~1.4v to en/dim pin. 4. power up the input voltage source, and then power up the en/dim signal, the leds should be ignited
|
