ev2000dj-00a low input voltage 150ma linear regulator evaluation board ev2000dj-00a rev. 1.0 www.monolithicpower.com 1 9/26/2005 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2005 mps. all rights reserved. the future of analog ic technology tm tm description the ev2000dj-00a is the evaluation board for the MP2000DJ. the board operates from a 1.35v to 6.0v input voltage and regulates the output voltage at 1.2v with 2% accuracy. by adjusting the resistor divider values, the board can regulate the output voltage from 0.5v to 5v. it can also supply up to 150ma of load current. electrical specifications parameter symbol value units input voltage v in 1.35 ? 6.0 v output voltage v out 1.2 v operating temperature ?40 ? +85 c features ? excellent load transient response ? excellent line regulation ? 1.35v to 6v input voltage ? 1.2v output voltage ? up to 150ma load current applications ? 802.11 pc cards ? mobile handset pll power ? audio codec power ?mps? and ?the future of analog ic technology? are trademarks of monolithic power systems, inc. ev2000dj-00a evaluation board (l x w h) 2.0? x 2.0? x 0.4? (5.1cm x 5.1cm x 1.1cm) board number mps ic number ev2000dj-00a MP2000DJ
ev2000dj-00a ? low input voltage, 150ma linear regulator ev board ev2000dj-00a rev. 1.0 www.monolithicpower.com 2 9/26/2005 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2005 mps. all rights reserved. tm evaluation board schematic en gnd vin mp2000 in fb 3 2 4 5 1 out gnd en t1 u1 t2 vout gnd ev2000_s01 ev2000dj-00a bill of materials qty ref value description package manufacturer manufacturer p/n 1 c1 2.2f ceramic capacitor, 10v, x5r 0805 tdk c2012x5r1a225k 1 c2 0.1f ceramic capacitor, 25v, x7r/x5r 0805 tdk c2012x7r1e104k 1 c3 4.7f ceramic capacitor, 6.3v, x5r 0805 tdk c2012x5r0j475k 1 r1 28.7k ? resistor, 1% 0805 panasonic erj-6enf4022v 1 r2 20.0k ? resistor, 1% 0805 panasonic erj-6enf4992v 1 r3 10k ? resistor, 5% 0805 panasonic erj-6enf1002v 1 u1 low voltage 150ma linear reg. tsot23-5 mps MP2000DJ
ev2000dj-00a ? low input voltage, 150ma linear regulator ev board notice: the information in this document is subject to change wi thout notice. please contact mps for current specifications. users should warrant and guarantee that third party intellectual property rights ar e not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. ev2000dj-00a rev. 1.0 www.monolithicpower.com 3 9/26/2005 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2005 mps. all rights reserved. tm printed circuit board layout figure 1?top silk layer figure 2?top layer quick start guide the output voltage of this board is set to 1.2v. the en pin is connected to ground with a 10k ? resistor for automatic startup. you can connect en to vin to disable the mp2000. 1. attach the positive and negative ends of the load to the vout and gnd pins, respectively. 2. attach the input voltage (1.35v v in 6v) and input ground to the vin and gnd pins, respectively. 3. the default resistor values on the board are r1=28.7k ? and r2=20k ? . changing these resistor values will change the output voltage. use the following equation to determine resistor values for different output voltages: ? ? ? ? ? ? + = 2 r 1 r 1 v 5 . 0 v out t1 and t2 are test points for accurately measuring the input and output voltages.
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