dice/dwf specification 1 RH3080MK information furnished by linear technology corporation is believed to be accurate and reliable. however, no responsibility is assumed for its use. linear technology corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. l , lt, ltc, ltm, linear technology and the linear logo are registered trademarks of linear technology corporation. all other trademarks are the property of their respective owners. pad function 1. 2. 3. 4. 5. in out sense set v control description 44mils 75mils, backside metal: alloyed gold layer backside potential: out tie sense to out die cross reference ltc finished part number order part number RH3080MK RH3080MK RH3080MKdice RH3080MKdwf* please refer to ltc standard product data sheet for other applicable product information. *dwf = dice in wafer form. adjustable 0.9a single resistor low dropout regulator 21 2 3 4 5 1 the rh3080 is a 0.9a low dropout linear regulator with a unique architecture featuring a precision current source and voltage follower which allows the output to be pro- grammed to any voltage between zero and 36v. multiple regulators can be paralleled to increase total output current and spread heat over a system pc board with no need for heat sinking. the pass transistor collector can be brought out independently of the circuit supply voltage to allow dropout voltage to approach the saturation limit of the pass transistor. a small 2.2f capacitor on the output with an esr of less than 0.5 is adequate to insure stability. applications with large output load transients require a larger output capacitor value to minimize output voltage change. input circuitry insures output safe operating area current limiting and thermal shutdown protection. the rated output current of an rh3080-based part is ? xed by internal wire length/resistance. linear technology dice element evaluations are based on parts rated for 0.9a output current.
dice/dwf specification 2 RH3080MK linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 fax: (408) 434-0507 www.linear.com ? linear technology corporation 2010 i.d.no. 66-13-3080 lt 0510 ? printed in usa wafer level testing is performed per the indicated speci? cations for dice. considerable differences in performance can often be observed for dice versus packaged units due to the in? uences of packaging and assembly on certain devices and/or parameters. please consult factory for more information on dice performance and lot quali? cations via lot sampling test procedures. dice data sheet subject to change. please consult factory for current revision in production. dice/dwf electrical test limits t a = 25c. all voltages are relative to out. note 1: dice are probe tested at 25c to the limits shown except for high current tests. dice are tested under low current conditions which assure full load current speci? cations when assembled in packaging systems approved by linear technology. note 2: unless otherwise speci? ed, all voltages are with respect to v out . the RH3080MKdice is tested at die sort under pulse load conditions such that t a ? t j . note 3: minimum load current is equivalent to the quiescent current of the part. since all quiescent and drive current is delivered to the output of the part, the minimum load current is the minimum current required to maintain regulation. parameter conditions min max units set pin current (note 6) v in = 1v, v control = 2v, i load = 1ma 9.9 10.1 a output offset voltage (v out C v set )v in = 1v, v control = 2v, i load = 1ma C5 5 mv load regulation, i set i load = 1ma to 100ma C15 15 na load regulation, v os i load = 1ma to 100ma C1.0 1.0 mv line regulation, i set v in = 1v to 26v, v control = 2v to 26v, i load = 1ma C0.45 0.45 na/v line regulation, v os v in = 1v to 26v, v control = 2v to 26v, i load = 1ma C0.05 0.05 mv/v minimum load current (note 3) v in = 10v, v control = 10v, v out = 0.1v v in = 26v, v control = 26v, v out = 0.1v 0.4 0.9 ma ma v control dropout voltage (note 4) v in = 1v, i load = 0.1a 1.4 v v in dropout voltage (note 4) v control = 2v, i load = 0.1a 0.17 v v control pin current (note 5) v in = 1v, v control = 2v, i load = 0.1a 5.3 ma note 4: dropout results from either of minimum control voltage , v control , or minimum input voltage , v in , both speci? ed with respect to v out . these speci? cations represent the minimum input-to-output differential voltage required to maintain regulation. note 5: the v control pin current is the drive current required for the output transistor. this current tracks output current with roughly a 1:60 ratio. the minimum value is equal to the quiescent current of the device. note 6: set pin is clamped to the output with diodes. these diodes only carry current under transient overloads.
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