supersip26 11/99 rev c page 1 product data sheet 5 v dc i nput , 3.3 v dc o utput dc/dc c onverter ss26 (supersip tm ) features ! non isolated dc/dc converter designed to operate from a regulated 5v bus ! ! ! ! ! output voltage range: 1.8v - 3.6v ! ! ! ! ! easy resistive programming for desired output ! ! ! ! ! no resistive programming gives 3.3 vdc output ! ! ! ! ! wave solderable description the ss26 (supersip tm ) dc/dc converter accepts a regulated 5v input (10%) and provides 1.8vdc to 3.6vdc at 6a. the circuit is optimized for high efficiency and fast load transient response needed by telecom, dsp, and microprocessor applications. advanced thermal design, monolithic power circuitry, planar magnetics, and synchronous rectification result in outstanding performance and value. pins are staked for wave solderability. multiple programming, power good and on/ off options allow superior flexibility and drop in compatibility for most existing designs. internet: http://www.cdpowerelectronics.com power electronics division, united states 3400 e britannia drive, tucson, arizona 85706 phone: 520.295.4100 fax: 520.770.9369 power electronics division, europe c&d technologies (power electronics) ltd. 132 shannon industrial estate , shannon, co. clare, ireland tel: +353.61.474.133 fax:+353.61.474.141 more product information and application notes are available on our website at www.cdpowerelectronics.com
supersip26 11/99 rev c page 2 electrical specifications unless otherwise specified, operating conditions are as follows: v in =5v, v o =3.3v, i o =6a, t a =25c, c in =100 f, c o =0f. notes 1. input source<3? from supersip?, load transient <3a per sip. 100 f low esr capacitor for load transients >3a. 2. optional programming 1.8 - 3.6 or +10% available. see table. 3. 100 lfm air, v o =3.3v, i o =6a. see thermal design guide for other conditions. parameters conditions min. typ. max. units input input voltage v in 4.5 5.0 5.5 v dc input current ripple 200 ma rms required capacitance c in note 1 0 100 f output output voltage v o nominal 3.25 3.3 3.35 v dc output program range note 2 1.8 3.6 v dc output current i o t a =25 c 0 6 amps output ripple 20 mhz bw 15 50 mvp-p output rise time t 700 s output capacitance range c o 0 5000 f line regulation 0.5 % load regulation i o min-i o max 1.0 % temperature coefficient t c 0.01 %/ c combined variation v in min-max i o min-max t a =25c -85c -2 +2 % current limit i limit v in = 4.75vdc 6.5 9 12 a general switching frequency 800 khz dynamic response ? i o / ? t = 1a/1 0 ! sec, v i = 5.0v, t a = 25 c load change from i o = 0% to i o = 100% peak deviation 30 mv settling time (v o <10% peak deviation) 100 sec load change from i o = 100% to i o = 0% peak deviation 30 mv settling time (v o <10% peak deviation) 100 sec temperature operating temperature note 3 0 +60 c storage temperature -40 +125 c
supersip26 11/99 rev c page 3 thermal design guide locate your operating current, read the junction temp rise from the graph and add to your maximum ambient. 135 c is the maximum allowable operating junction tem- perature. test conditions: device soldered into 4 ? x 4 ? pcb, 2 sided with power and ground planes for heat con- duction. due to the difficulty in predicting the thermal effects of airflow velocity and direction, and thermal con- duction through ground planes it is important that the ss26 supersip tm be evaluated thermally in each application. for high ambient temperature/high current application please request our application note 35-118-01, ? accurate measurements of ss26 supersip tm junction tempera- ture ? , for further assistance. programming to program the ss26 supersip tm for v out <3.3, connect resistor across pins 8 (trim) and 6 (v o ). for v out >3.3, resistor is connected across pins 8 and 4 (gnd). t j rise vs. i o (junction temp rise vs. output current) efficiency % output current amps v o =3.3v, c out -o f, v i =5v, c in =100 f efficiency 100 95 90 85 80 75 0.5 1.5 2.5 3.5 4.5 5.5 temp rise c output current - amps 70 60 50 40 30 20 10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 still air 100lfm 300lfm 3.3v 25c 2.1v 25c table 2 v out resistor value v out resistor value 1.8 576 ? 2.8 18.2k 1.9 1.21k 2.9 24.3k 2.0 1.96k 3.0 34.8k 2.1 2.8k 3.1 54.9k 2.2 3.83k 3.2 110.0k 2.3 4.99k 3.3 open 2.4 6.49k 3.4 66.5k 2.5 8.25k 3.5 29.4k 2.6 10.7k 3.6 18.2k 2.7 13.7k transient response operating conditions are as follows: vin=5v, vo=3.3v, load change from io=0% to io=100%, ta=25 c, cin=0f, co= f. operating conditions are as follows: vin=5v, vo=3.3v, load change from io=100% to io=0%, ta=25 c, cin=0f, co= f.
supersip26 11/99 rev c page 4 ordering information typical examples: pin out pin function description 1v o output voltage 2v o output voltage 3v o output voltage 4 gnd ground 5 gnd ground 6v in input voltage 7v in input voltage 7a p good power good option 8 trim output voltage adjust 9 enable enable option the information provided herein is believed to be reliable; however, c&d technologies assumes no responsibility for inaccuracie s or omissions. c&d technologies assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user ? s own risk. prices and specifications are subject to change without notice. no patent rights or licenses to any of the circuits described herein are implied or granted to any third party. c&d technologies does not authorize or warrant any c&d technologies product for use in life support devices/systems or in aircraft control applications. power good enable programming (see table 2) a = pin 7a installed for power a = logic1 or open = on a = standard 3.3v with pin 8 open good option logic 0 or gnd = off or program per table 2. b = pin omitted (industry standard) b = logic 0 or gnd = on logic 1 = off mechanical tolerances +.008 ? for 3 place decimals + .02 ? for 2 place decimals + .002 ? for pin diameter .14 (3.56) 0.28 (7.2) 1 2 3 4 2.50 (63.5) 1.900 (48.26) .200 (5.08) 0.025 (64) square tip optional 0.100 (2.54) 0.55 (14.0) 0.14 (3.56) 0.30 (7.62) .16 (4.06) 5 6 7 7a 8 9 ss 26 - a - a - a standard configuration 5v to 3.3v with 1.8v-3.6v trim range ss 26 - b - a - a
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