ec 432l adjustable precision shunt regulator e-cmos corp. ( www.ecmos.com.tw ) page 1 of 7 4k11n-rev.f001 descriptions the ec432l is a low voltage three terminal adjustab le shunt regulator with a guaranteed thermal stability over applicable temperature ranges. the output voltage can be set t o any value between v ref (approximately 1.24 v) to 8v with two external resistors. this device has a typical outpu t impedance of 0.30 . active output circuitry provides a very sharp turn on characteristic, making this device excellent rep lacement for zener diodes in many applications. the ec432l is characterized for operation from -40 to 105 , and two package options (sot-23 sc59 and to-92) allow the designer the opportunity to select the pr oper package for their applications. feature low voltage operation (1.24v) adjustable output voltage v0 =vref to 8v wide operating current range 60 a to 100ma ? low dynamic output impedance 0.30 (typ.) trimmed bandgap design up to + 0.5%. esd rating is 2.5kv(per mil-std-883d) 100% lead (pb)-free. application linear regulators adjustable supplies switching power supplies battery operated computers instrumentation computer disk drives ordering information ec432l nn xxx x sb1 sot23 b1 sc59-3l a6 to-92-3l r tape & reel
ec 432l adjustable precision shunt regulator e-cmos corp. ( www.ecmos.com.tw ) page 2 of 7 4k11n-rev.f001 parameter symbol maximum units cathode voltage v ka 8 v continuous cathode current i ka 150 ma reference current i ref 3 ma operating junction temperature range t j 150 c storage temperature range t stg -45 to 150 c 230 (sot-23-3) thermal resistance q ja 220 (to-92) c/w lead temperature (soldering) 10 seconds t lead 260 c pin configuration absolute maximum ratings part number package marking marking information ec432lnnsb1r sot23 s432l x 1. the last character is the batch number. 2. lead-free package isindicated by a dot on top of the last character. ec432lnnb1r sc59-3l s432l x 1. the last character is the batch number. 2. lead-free package isindicated by a dot on top of the last character. EC432LNNA6R to92-3l se432l xxxx 1. xxxx is the batch number. 2. lead-free package is indicated by lf after xxxx sot-23-3 /sc59-3l (top view) to-92 (top view)
ec 432l adjustable precision shunt regulator e-cmos corp. ( www.ecmos.com.tw ) page 3 of 7 4k11n-rev.f001 parameter symbol test conditions & circuit min typ max unit 0.5% 1234 1240 1246 1.0% 1228 1240 1252 1.5% 1221 1240 1259 2.0% 1215 1240 1265 reference voltage 1.25v 1% (1) v ref test circuit #1 v ka = v ref , i ka = 10ma 1237 1250 1263 mv deviation of reference voltage over full temperature range v i(dev) test circuit #1 v ka = v ref , i ka = 10ma, t a =-40c - 105c -- 68 mv ratio of change in reference voltage to the change in cathode voltage d v ref / d vka test circuit #2 i ka = 10ma, d v ka = 8v to v ref -- 1.0 2.7 mv/v reference current i ref test circuit #2 i ka = 10ma, r1=10k , r2 = -- 0.15 2 a deviation of reference current over full temperature range i i(dev) test circuit #2 i ka = 10ma, r1=10k , r2 = t a = 0c - 105c -- 0.10 a minimum cathode current for regulation i min test circuit #1 v ka = v ref -- 60 100 a off-state cathode current i off test circuit #3 v ka = 8v, v ref = 0 -- 0.04 0.8 a dynamic impedance | z ka | test circuit #1 i ka = 100a - 80ma, v ka = v ref , f ? 1khz -- 0.30 1 electrical characteristics note 1: upon customer request.
ec 432l adjustable precision shunt regulator e-cmos corp. ( www.ecmos.com.tw ) page 4 of 7 4k11n-rev.f001 typical performance characteristics
ec 432l adjustable precision shunt regulator e-cmos corp. ( www.ecmos.com.tw ) page 5 of 7 4k11n-rev.f001 the areas under the curves represent conditions tha t may cause the device to oscillate. for v ka = 2v and 3v curves, r2 and v bat were adjusted to establish the initial v ka and i k conditions with cl = 0. v bat and c l then were adjusted to determine the ranges of stability. as the graph sug gested, ec432l is unconditional stable with i k from 0 to 100ma and with c l from 0.001uf to 1uf. symbol diagram block diagram test circuits
ec 432l adjustable precision shunt regulator e-cmos corp. ( www.ecmos.com.tw ) page 6 of 7 4k11n-rev.f001 application circuit outline drawing ec432
ec 432l adjustable precision shunt regulator e-cmos corp. ( www.ecmos.com.tw ) page 7 of 7 4k11n-rev.f001
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