technical reference note 6.23.98 1 of 4 technical reference note doc #1980 trn-AA25N-048L-033S electrical characteristics are guaranteed over the ambient temperature range (-40 to 60 c), for the full range of input voltage (v i ), and for the full load range (i 0 min to i 0 rated ) unless otherwise noted. v i , v o and i 0 are actual operating conditions, i o rated is nominal rating. electrical specifications - AA25N-048L-033S 36-75v in; 3.3v / 6a out symbol parameter conditions min typ max units input characteristics v i input voltage 36 48 75 v p il no load input power v i =v inom 0.25 w i in input current per ets300-132.2 vin<36vdc (see note 1) 150 %i in at v nom c in input capacitance (internal) 1.8 m f i i input ripple current v i =v nom, i o= i o rated 10 ma p-p output characteristics p o max total output power 19.8 w nominal (factory set) output voltage v o1 nom output 1 3.267 3.3 3.333 v v o2 nom output 2 v v o3 nom output 3 v rated output current t ambient = 60 c i o1 rated output 1 0.6 6.0 a i o2 rated output 2 a i o3 rated output 3 a noise and ripple pk-pk, 20mhz bandwidth output 1 with a 0.1 m f ceramic capacitor 35 50 mv output 2 connected across +v out and mv output 3 -v out. mv load regulation from 10% to 100% of rated v o1 output current 0.75 %v o1 v o2 %v 02 v o3 %v 03 line regulation v imin to v imax v o1 i o = i o typ 0.1 %v 01 v o2 %v 02 v o3 %v 03 current limit i o1 lim 8.3 a i o2 lim a i o3 lim a temperature coefficient per c baseplate temperature 0.02 %v o nom/ c input - output capacitance 100 pf h efficiency v i = 48v, i o = i o rated 79 80.5 %
2 of 4 6.23.98 technical reference note electrical specifications - AA25N-048L-033S 36-75 vin; 3.3 / 6a doc# 1980 symbol parameter conditions min typ max units output characteristics - continued t on turn-on time v i = 0 to v inom 75 ms v i = 0 to v i min 100 ms v i = 0 to v i max 50 ms transient response (v o1 only) i o = 25 to 75% i o rated @ 15 m s/a 2% %v o1 nom positive or negative step 250 m s isolation input-output isolation 1500 vdc 50 m ohm resistance input-case isolation n/a m ohm resistance output-case isolation 1500 vdc 50 m ohm resistance control signals v out output voltage 2.5 < v c <5.5 or open circuit 3.3 v v c < 0.8v 0 v v adj output voltage external resistor attached 3.14 3.3 3.63 v environmental t baseplate overtemperaure shutdown operating temp exceeds max rating 105 c 2.0
(50.8) .10
(2.54)
.90
(22.86)
.40
(10.16) 2.00
(50.8) 1.80
(45.72) 1 2 4 6 7 8 .040 (1.01)
dia. typ.
.20
(5.0)
.52
(13.2)
3 5 .015 (.38)
min. .40
(10.16) 2.00
(50.8) .40
(10.16) .40
(10.16) .40
(10.16) pin assignment single output 1. +vin 2. -vin 3. no pin 4. enable 5. no pin 6. +3.3v out 7. +3.3v rtn 8. trim bottom view all dimensions are inches (mm) figure 1
technical reference note 6.23.98 3 of 4 electrical specifications - AA25N-048L-033S 36-75 vin; 3.3 / 6a doc# 1980 efficiency (typ) figure 2 efficiency vs load current aa20m-048l-033s 62.0% 64.0% 66.0% 68.0% 70.0% 72.0% 74.0% 76.0% 78.0% 80.0% 82.0% 84.0% 0.60 1.20 1.80 2.40 3.00 3.60 4.20 4.80 5.40 6.00 load current - amps efficiency vin= 36.0 vin= 48.0 vin= 75.5 output power derating figure 3 output regulation vs. temperature and loading (typ) figure 4 output line and load regulaton (20 c typ) figure 5 line and load regulation AA25N-048L-033S@ 20 degrees c 3.267 3.275 3.284 3.292 3.300 3.308 3.317 3.325 3.333 0.6 1.2 1.8 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 load current - amps output voltage - volts vin= 36.0 vin= 48.0 vin= 75.5 output voltage vs. temperature AA25N-048L-033S 3.267 3.275 3.284 3.292 3.300 3.308 3.317 3.325 3.333 -60 -40 -20 0 20 40 60 80 ambient temperature - degrees c output voltage - volts min load nom load max load derating curve 0 5 10 15 20 25 30 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 ambient temperature (deg. celsius) output power (watts) ambient air is measured 1/2" from unit. max. baseplate @ f.l. = 105 o c
4 of 4 6.23.98 technical reference note electrical specifications - AA25N-048L-033S 36-75 vin; 3.3 / 6a doc# 1980 turn on characteristics (typ) figure 6 output trim methods figure 7 5 6 7 8 5 6 7 8 5 6 7 8 output voltage
decrease output voltage
increase adjust output
voltage
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