ms5a series C power module specifications are subject to change without notice. customers should verify actual device performance in their specific applications. electrical specifications features surface mount 5 amp output current 90 % efficiency pin-out compatible with lucents austin lite? low profile trim function overcurrent protection w/ auto-restart fast transient response high-temperature operation non-isolated output enable/disable general information the ms5a brings low profile and cost effectiveness to a surface mount package. matching the footprint and pin-out of lucent s austin lite series, the ms5a is perfect for point-of-load applications that demand a high performance power source. designed for use with today s latest microprocessors, asics, and dsps, the ms5a provides superior transient response using bourns switch power s patented v 2 architecture. this high efficiency converter includes a control pin for output enable/disable, and can also accept an external voltage across its output; an advantage when powering multiple input processors. input specifications voltage .....................................3.0 vdc min. 3.3 vdc nom. 3.6 vdc max. or .........................................4.5 vdc min. 5 vdc nom. 5.5 vdc max. current ..................................5 a (5 v input) 5.5 a (3.3 v input) remote enable open = on low = off.....................................0.4 vdc (use open collector to pull down) output specifications current......................................................5 a voltage setpoint accuracy........? %vnom voltage trim range...........-5 to +5 %vnom line regulation ......................?.1 %vnom load regulation ....................?.3 % vnom (?.2 % without remote sense) dynamic response 0 to 6 a load ...................200 mv nom. ( ? i/ ? t = 3 a/?) 19 ? nom. 6 to 0 a load ...................200 mv nom. ( ? i/ ? t = 3 a/?) 19 ? nom. temperature regulation ...............................?.02 %vout/? max. general specifications mbtf ..................................1,000 khrs nom. bellcore tr332, 25 ? operating temperature..........-25 to +85 ? (-40 to +85 ? optional) storage temperature...........-40 to +125 ? switching frequency ............800 khz nom. (500 khz nom. ms5a-3s2.5 only) bottom view height = 7.0 (0.275) 4.8 (0.19) 1.3 (0.05) 1.9 (0.075) 4.8 (0.19) 0.6 (0.025) 29.9 (1.178) 33.0 (1.30) 7.9 (0.31) 10.9 (0.43) 1.2 (0.048) 1.9 (0.075) 1.3 (0.05) 1.8 x 3.0 (0.07 x 0.12) 4 plcs. 13.5 (0.53) 18.4 (0.725) millimeters (inches) dimensions = nominal input (v) output voltage (v) output current (a) ocp limit (a) ripple max (mv pp) efficiency typ. (%) ms5a-5s3.3 5 3.3 5 7 100 90 ms5a-5s2.5 2.5 87 ms5a-5s2.0 2.0 85 ms5a-5s1.8 1.8 82 ms5a-5s1.5 1.5 80 ms5a-3s2.5 3.3 2.5 5 7 80 91 ms5a-3s2.0 2.0 88 ms5a-3s1.8 1.8 85 ms5a-3s1.5 1.5 82 ms5a-3s1.2 1.2 product dimensions obsolete
asia-pacific: tel +886- (0)2 25624117 ?fax +886- (0)2 25624116 europe: tel +41-41 768 5555 ?fax +41-41 768 5510 the americas: tel +1-951 781-5500 ?fax +1-951 781-5700 www.bourns.com reliable electronic solutions copyright? 2005, bourns, inc. litho in u.s.a., rev. 1/05 product schematic r up r down r up = 499 x ( v in C (1 + trim %) x 1.5 v in C 1.5 ) trim % = desired percentage trim up or down 1 C ( v in C (1 + trim %) x 1.5 v in C 1.5 ) r down = 1 C trim % 499 x ( 1 C (1 C trim %) ) v in cnt gnd v in cnt gnd ms5a-3s2.5 ms5a-3s3.3 6 5 4 3 2 1 0 6 5 4 3 2 1 0 -40 40 30 ambient temperature (c) -20 20 90 80 70 60 -30 50 200 lfm 400 lfm 200 lfm 100 lfm 100 lfm 0 lfm 0 lfm -z low temp option -z low temp option -40 40 30 ambient temperature (c) -20 20 90 80 70 60 -30 50 how to order m s 5a - 5 s 3.3 - z configuration internal identifier current/power (amps) input voltage (volts) outputs s = single output voltage (volts) options z = industrial temperature range (-40 ? operation) temperature derating ms5a series ? power module obsolete
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