ts7900 series 3-terminal fixed negative voltage regulator 1/6 version: f13 to - 220 ito - 220 general description the ts7900 series of fixed output negative voltage regulators are intended as complements to the popul ar ts78 00 series device. these negative regulators are availa ble in the same seven-voltage options as the ts7900 devices. in addition, one extra voltage option commonly empl oyed in mecl systems is also available in the negat ive ts7900 series. available in fixed output voltage op tions from -5.0 to - 24 volts, these regulators employ current limiting, thermal shutdown, and safe-area compensat ion-- making them remarkably rugged under most operating conditions. with adequate heat sinking they can del iver output currents in excess of 1 ampere. features output voltage: -5 & -12v output current up to 1a no external components required internal thermal overload protection internal short-circuit current limiting output transistor safe-area compensation output voltage offered in 4% tolerance standard application circuit a common ground is required between the input and the output voltages. the input voltage must remain typically 2.0v above the output voltage even during the low point on the input ripple voltage. xx = these two digits of the type number indicate voltage. * = cin is required if regulator is located an appr eciable distance from power supply filter. ** = co is not needed for stability; however, it d oes improve transient response. ordering information part no. package packing ts79 xx cz c0 to-220 50pcs / tube ts79 xx cz c0g to-220 50pcs / tube ts79 xx ci c0 ito-220 50pcs / tube ts79 xx ci c0g ito-220 50pcs / tube note: where xx denote voltage option 05 =-5v, 12 =-12v g denote for green product halogen free absolute maximum rating (ta = 25 o c unless otherwise noted) parameter symbol limit unit input voltage v in -35 v power dissipation p d internal limited w operating junction temperature range t jopr 0 ~ +125 o c junction temperature t j +150 o c storage temperature range t stg -65~+150 o c thermal resistance - junction to case to-220 r ? jc 3 o c/w ito-220 5 thermal resistance - junction to ambient to-220 r ? ja 50 o c/w ito-220 60 note: * follow the derating curve pin definition : 1. ground 2. input (tab) 3. output
ts7900 series 3-terminal fixed negative voltage regulator 2/6 version: f13 ts7905 electrical characteristics (vin= -10v, iout=500ma, 0 o c tj 125 o c, cin=0.33uf, cout=0.1uf; unless otherwise specifi ed.) parameter symbol test condition min typ max unit output voltage vout tj=25 o c -4.80 -5 -5.20 v -7.5v vin -20v, 10ma iout 1a, pd 15w -4.75 -5 -5.25 line regulation regline tj=25 o c -7.5v vin -25v -- 3 100 mv -8v vin -12v -- 1 50 load regulation regload tj=25 o c 10ma iout 1a -- 15 100 250ma iout 750ma -- 5 50 quiescent current iq iout=0, tj=25 o c -- 4 8 ma quiescent current change ? iq -7.5v vin -25v -- -- 1.3 10ma iout 1a -- -- 0.5 output noise voltage vn 10hz f 100khz, tj=25 o c -- 40 -- v ripple rejection ratio rr f=120hz, -8v vin -18v 62 74 -- db voltage drop vdrop iout=1a, tj=25 o c -- 2 -- v output short circuit current ios tj=25 o c -- 750 -- ma peak output current io peak tj=25 o c -- 2.1 -- a temperature coefficient of output voltage ? vout/ ? tj iout=10ma, 0 o c tj 125 o c -- -0.1 -- mv/ o c ts7912 electrical characteristics (vin= -19v, iout=500ma, 0 o c tj 125 o c, cin=0.33uf, cout=0.1uf; unless otherwise specifi ed.) parameter symbol test condition min typ max unit output voltage vout tj=25 o c -11.53 -12 -12.48 v -14.5v vin -27v, 10ma iout 1a, pd 15w -11.42 -12 -12.60 line regulation regline tj=25 o c -14.5v vin -30v -- 10 240 mv -15v vin -19v -- 3 120 load regulation regload tj=25 o c 10ma iout 1a -- 12 240 250ma iout 750ma -- 4 120 quiescent current iq tj=25 o c, iout=0 -- 4.3 8 ma quiescent current change ? iq -14.5v vin -30v -- -- 1 10ma iout 1a -- -- 0.5 output noise voltage vn 10hz f 100khz, tj=25 o c -- 75 -- uv ripple rejection ratio rr f=120hz, -15v vin -25v 55 70 -- db voltage drop vdrop iout=1a, tj=25 o c -- 2 -- v output short circuit current ios tj=25 o c -- 350 -- ma peak output current io peak tj=25 o c -- 2.1 -- a temperature coefficient of output voltage ? vout/ ? tj iout=10ma, 0 o c tj 125 o c -- -1 -- mv/ o c pulse testing techniques are used to maintain the junction temperature as close to the ambient temper ature as possible, and thermal effects must be taken into ac count separately. this specification applies only for dc power dissi pation permitted by absolute maximum ratings.
ts7900 series 3-terminal fixed negative voltage regulator 3/6 version: f13 electrical characteristics curve figure 1. worse case power dissipation as a function of ambient temperature figure 2. peak output current as a function of input-output differential voltage figure 3. ripple rejection as a function of frequency figure 4. ripple rejection as a function of output voltage figure 5. output voltage as a function of junction temperature figure 5. output voltage as a function of junction temperature
ts7900 series 3-terminal fixed negative voltage regulator 4/6 version: f13 to-220 mechanical drawing unit: millimeters marking diagram xx = output voltage (05=-5v, 12=-12v) y = yea r code m = month code ( a =jan, b =feb, c =mar, d =apl, e =may, f =jun, g =jul, h =aug, i =sep, j =oct, k =nov, l =dec) = month code for halogen free product ( o =jan, p =feb, q =mar, r =apl, s =may, t =jun, u =jul, v =aug, w =sep, x =oct, y =nov, z =dec) l = lot code cz = package code for to -220
ts7900 series 3-terminal fixed negative voltage regulator 5/6 version: f13 ito-220 mechanical drawing unit: millimeters marking diagram xx = output voltage (05=-5v, 12=-12v) y = year code m = month code ( a =jan, b =feb, c =mar, d =apl, e =may, f =jun, g =jul, h =aug, i =sep, j =oct, k =nov, l =dec) = month code for halogen free product ( o =jan, p =feb, q =mar, r =apl, s =may, t =jun, u =jul, v =aug, w =sep, x =oct, y =nov, z =dec) l = lot code ci = package code for ito -220
ts7900 series 3-terminal fixed negative voltage regulator 6/6 version: f13 notice specifications of the products displayed herein are subject to change without notice. tsc or anyone on its behalf, assumes no responsibility or liability for any erro rs or inaccuracies. information contained herein is intended to provide a product description only. no license, express or implied, to any intellectual property rights is granted by this document. except as provided in tscs terms and co nditions of sale for such products, tsc assumes no liability wh atsoever, and disclaims any express or implied warr anty, relating to sale and/or use of tsc products includi ng liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, cop yright, or other intellectual property right. the products shown herein are not designed for use in medical, life-saving, or life-sustaining applica tions. customers using or selling these products for use i n such applications do so at their own risk and agr ee to fully indemnify tsc for any damages resulting from such i mproper use or sale.
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