standard application for stby* pin open = output enabled ground = output disabled. pin-out information pin function 1 ovp drive 2 pwr good 3 vid0 4 vid1 5 vid2 6 vid3 7 vid4 8 stby* 9 do not connect 10 v in 11 v in 12 v in pin function 13 remote sense gnd 14 gnd 15 gnd 16 gnd 17 gnd 18 gnd 19 v out 20 v out 21 v out 22 v out 23 remote sense v out pt6700 the pt6700 is a new series of high-performance, 12.5 amp inte- grated switching regulators (isrs) housed in a unique, space-saving 23- pin sip package. the 12.5a capability allows easy integration of the latest high-speed, low-voltage ps and bus drivers into existing 5v systems. the output voltage of the pt6700 can be programmed easily from 1.3v to 3.5v with a 5-bit input compatible with intels pentium a ii processor. the pt6700 includes a differential remote sense which automatically com- pensates for any voltage drop from the isr to the load. also provided are internal short circuit protection, ovp drive and a power good output signal. when over-voltage is de- tected, the pt6700 provides drive for an external crowbar or other protec- tion circuitry. for assistance or to order, call (800) 531-5782 c in = required 1000f electrolytic c out = required 330f electrolytic l1 = optional 1h input choke r1 = required 10k w pull-up when using pwr good signal. pwr good output is high when the output voltage is within specification. specifications characteristics pt6700 series (t a = 25c unless noted) symbols conditions min typ max units output current i o t a = +60c, 200 lfm, pkg n 0.1 * 12.5 a t a = +25c, natural convection 0.1 * 12.5 a input voltage range v in 0.1a i o 12.5a 4.5 ** 5.5 v output voltage tolerance d v o v in = +5v, i o = 12.5a v o -0.03 v o +0.03 v 0c t a +65c line regulation reg line 4.5v v in 5.5v, i o = 12.5a 10 mv load regulation reg load v in = +5v, 0.1 i o 12.5a 20 mv v o ripple/noise v n v in = +5v, i o = 12.5a 50 mv transient response t tr i o step between 6a and 12a 100 sec with c out = 330f v os v o over/undershoot 200 mv efficiency h v in = +5v, i o = 8a v o = 3.3v 89 % v o = 2.9v 87 % v o = 2.5v 85 % v o = 1.8v 81 % v o = 1.5v 79 % switching frequency ? o 4.5v v in 5.5v 300 350 400 khz 0.1a i o 12.5a absolute maximum t a 0 tbd c operating temperature range recommended operating t a forced air flow = 200 lfm 0 +65 c temperature range over v in and i o ranges storage temperature t s -40 +125 c mechanical shock per mil-std-883d, method 2002.3 1 msec, half sine, mounted to a fixture tbd gs mechanical vibration per mil-std-883d, method 2007.2, tbd gs 20-2000 hz, soldered in a pc board weight 26 grams * isr-will operate down to no load with reduced specifications. ** the minimum input voltage is 4.5v or v out +1.2v, whichever is greater. output capacitors: the pt6700 series requires a minimum ouput capacitance of 330f for proper operation. do not use oscon type capacitors. the max imum allow- able output capacitance is 15,000f. input filter: an input filter is optional for most applications. the input inductor must be sized to handle 12.5adc with a typical value of 1h. the input capacitance must be rated for a minimum of 1.1arms of ripple current. for transient or dynamic load applications, additional capacitance may be required. revised 1/12/99 power trends, inc. 27715 diehl road, warrenville, il 60555 (800) 531-5782 fax: (630) 393-6902 http://www.powertrends.com pt6700 10 - 12 14 - 18 19 - 22 2 v in gnd 1h gnd v out c out + c in + 13 23 3 l1 pwr good load remote sense (+) remote sense (-) vid1 vid2 vid3 vid4 programming pins 4 5 6 stby* 8 7 vid0 ovp drv 1 r1 12.5 amp programmable integrated switching regulator series advanced information - available 1q99 patent pending on package assembly new space-saving package
programming information vid4=1 vid4=0 vid3 vid2 vid1 vid0 vout vout 1 1 1 1 2.0v 1.30v 1 1 1 0 2.1v 1.35v 1 1 0 1 2.2v 1.40v 1 1 0 0 2.3v 1.45v 1 0 1 1 2.4v 1.50v 1 0 1 0 2.5v 1.55v 1 0 0 1 2.6v 1.60v 1 0 0 0 2.7v 1.65v 0 1 1 1 2.8v 1.70v 0 1 1 0 2.9v 1.75v 0 1 0 1 3.0v 1.80v 0 1 0 0 3.1v 1.85v 0 0 1 1 3.2v 1.90v 0 0 1 0 3.3v 1.95v 0 0 0 1 3.4v 2.00v 0 0 0 0 3.5v 2.05v ? space saving sip package ? +5v input ? 5-bit programmable: 1.3v to 3.5v@12a ? high efficiency ? input voltage range: 4.5v to 5.5v ? differential remote sense ? short circuit protection ? over-voltage drive ? power good signal features for assistance or to order, call (800) 531-5782 power trends, inc. 27715 diehl road, warrenville, il 60555 (800) 531-5782 fax: (630) 393-6902 http:/www.powertrends.com pt6701, v o = 3.3v (typical performance at t a = 25c) efficiency vs output current ripple vs output current power dissipation vs output current efficiency - % ripple-(mv) pd-(watts) iout-(amps) iout-(amps) iout-(amps) series ordering information pt6701 o o o o o = 1.3 to 3.5 volts (for dimensions and pc board layout, see package styles 1300 and 1310.) pt series suffix (pt1234 x ) case/pin configuration vertical through-hole n horizontal through-hole a horizontal surface mount c logic 0 = pin 12 potential (remote sense gnd) logic 1 = open circuit (no pull-up resistors) vid3 and vid4 may not be changed while the unit is operating. pt6700 40 50 60 70 80 90 100 024681012 0 1 2 3 4 5 6 7 024681012 0 10 20 30 40 50 60 024681012 characteristic data
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