supertex inc. supertex inc. www.supertex.com doc.# dsfp-LND250 b012314 LND250 general description the LND250 is a high voltage n-channel depletion mode (normally-on) transistor utilizing supertexs lateral dmos technology. the gate is esd protected. the LND250 is ideal for high voltage applications in the areas of normally-on switches, precision constant current sources, voltage ramp generation and ampliication. n-channel depletion-modedmos fet absolute maximum ratings parameter value drain-to-source bv dsx drain-to-gate bv dgx gate-to-source 20v operating and storage temperature -55 o c to +150 o c absolute maximum ratings are those values beyond which damage to the device may occur. functional operation under these conditions is not implied. continuous operation of the device at the absolute rating level may affect device reliability. all voltages are referenced to device ground. product marking features ? free from secondary breakdown ? low power drive requirement ? ease of paralleling ? excellent thermal stability ? integral source-drain diode ? high input impedance and low c iss ? esd gate protection applications ? solid state relays ? normally-on switches ? converters ? power supply circuits ? constant current sources ? input protection circuits packages may or may not include the following marks: si or pin coniguration to-236ab (sot-23) to-236ab (sot-23) drain source gate ndew w = code for week sealed = ?green? packaging product summary bv dsx /bv dgx (v) r ds(on) (max) i dss (min) 500 1.0k 1.0ma ordering information part number package options packing LND250k1-g* to-236ab (sot-23) 3000/reel -g denotes a lead (pb)-free / rohs compliant package* part is not recommended for new designs. please refer to lnd150k1-g. downloaded from: http:///
2 supertex inc. www.supertex.com doc.# dsfp-LND250 b012314 LND250 electrical characteristics (t a = 25 o c unless otherwise speciied) sym parameter min typ max units conditions bv dsx drain-to-source breakdown voltage 500 - - v v gs = -10v, i d = 1.0ma v gs(off) gate-to-source off voltage -1.0 - -3.0 v v gs = 25v, i d = 100na v gs(off) change in v gs(off) with temperature - - 5.0 mv/ o c v gs = 25v, i d = 100na i gss gate body leakage current - - 100 na v gs = 20v, v ds = 0v i d(off) drain-to-source leakage current - - 100 na v gs = -10v, v ds = 450v - - 100 a v ds = 0.8v max rating, v gs = -10v, t a = 125 o c i dss saturated drain-to-source current 1.0 - 3.0 ma v gs = 0v, v ds = 25v r ds(on) static drain-to-source on-state resistance - 850 1000 v gs = 0v, i d = 0.5ma r ds(on) change in r ds(on) with temperature - - 1.2 %/ o c v gs = 0v, i d = 0.5ma g fs forward transductance 1.0 2.0 - mmho v ds = 0v, i d = 1.0ma c iss input capacitance - 7.5 10 pf v gs = -10v, v ds = 25v, f = 1.0mhz c oss common source output capacitance - 2.0 3.5 c rss reverse transfer capacitance - 0.5 1.0 t d(on) turn-on delay time - 0.09 - s v dd = 25v, i d = 1.0ma, r gen = 25 t r rise time - 0.45 - t d(off) turn-off delay time - 0.1 - t f fall time - 1.3 - v sd diode forward voltage drop - - 0.9 v v gs = -10v, i sd = 1.0ma t rr reverse recovery time - 200 - ns v gs = -10v, i sd = 1.0ma notes: 1. all d.c. parameters 100% tested at 25 o c unless otherwise stated. (pulse test: 300s pulse, 2% duty cycle.) 2. all a.c. parameters sample tested. notes: ? i d (continuous) is limited by max rated t j . thermal characteristics package i d (continuous) ? (ma) i d (pulsed) (ma) power dissipation @t a = 25 o c (w) ja ( o c/w) i dr (ma) i drm ? (ma) to-236ab (sot-23) 13 30 0.36 203 13 30 switching waveforms and test circuit 90% 10% 90% 90% 10% 10% pulse generator vdd r l output d.u. t. t (on) t d(on) t (off) t d(off) t r input input output 0v vdd r gen 0v -10v t f downloaded from: http:///
supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives an adequate ?product liability indemnification insurance agreement.? supertex inc . does not assume responsibility for use of devices described, and limits its liabilit y to the replacement of the devices determined defective due to workmanship. no responsibility is assumed for possible omissions and inaccuracies. circuitry and specifications are subject to change without notice. for the latest product specifications refer to the supertex inc . (website: http//www .supertex.com) ?2014 supertex inc. all rights reserved. unauthorized use or reproduction is prohibited. supertex inc. 1235 bordeaux drive, sunnyvale, ca 94089 t el: 408-222-8888 www.supertex.co m 3 LND250 (the package drawing(s) in this data sheet may not relect the most current speciications. for the latest package outline information go to http://www.supertex.com/packaging.html .) doc.# dsfp-LND250 b012314 3-lead to-236ab (sot-23) package outline (k1) 2.90x1.30mm body, 1.12mm height (max), 1.90mm pitch symbol a a1 a2 b d e e1 e e1 l l1 dimension (mm) min 0.89 0.01 0.88 0.30 2.80 2.10 1.20 0.95 bsc 1.90 bsc 0.20 ? 0.54 ref 0 o nom - - 0.95 - 2.90 - 1.30 0.50 - max 1.12 0.10 1.02 0.50 3.04 2.64 1.40 0.60 8 o jedec registration to-236, variation ab, issue h, jan. 1999. ? this dimension differs from the jedec drawing. drawings not to scale. supertex doc.#: dspd-3to236abk1, version c041309. vi ew b vi ew a - a side view top vi ew view b gauge plane seating plane 0.25 l1 l e1 e d 3 1 2 e e1 b a a seating plane a a2 a1 downloaded from: http:///
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