mp8200 1.0v precision shunt voltage regulator mp8200 rev. 0.9 www.monolithicpower.com 1 9/30/2009 mps proprietary information. unauthorized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. the future of analog ic technology description the mp8200 is a low voltage (1.0v), precision shunt regulator. it is offered in both fixed versions. it can operate from 1v to 12v, giving designers outstanding flexibility in the development of power supplies and instrumentation. the operating current of 100ua makes the part well suited for battery-powered portable electronic applications. the 8200 regulates the output voltage from as low as 1v. the part has a sharp turn-on characteristic and a dynamic resistance of less than 0.5 ? . the mp8200 is offered in a surface mounted 3-pin sot23 package. different voltage tolerance 1%. features ? wide input voltage range (1v to 12v) ? operating current from 100a to 10ma ? ultra compact sot23-3 package ? initial accuracy: 1% ? low dynamic output resistance of 0.5 ? ? stable with no external capacitor ? temperature range: ?40c to +85 c applications ? adjustable and programmable supplies ? instrumentation ? linear regulators ? notebook computers ? medical electronics ? 3v/ 5v 8-/12 bit data converters ? battery-powered equipments ?mps? and ?the future of analog ic technology? are registered trademarks of monolithic power systems, inc. typical application mp8200 v cc r bias v out 1.0v
mp8200 ? low voltage, 1v precision shunt voltage regulator mp8200 rev. 0.9 www.monolithicpower.com 2 9/30/2009 mps proprietary information. unauthorized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. ordering information part number* package top marking temperature MP8200DT sot23-3 is3yw ?40 c to +85 c * for tape & reel, add suffix ?z (eg. MP8200DT?z). for rohs compliant packaging, add suffix ?lf (eg. MP8200DT?lf?z) package reference v+ v- 1 2 3 trim top view absolute maxi mum ratings (1) reverse current ....................................... 25ma forward current........................................ 20ma continuous power dissipation (t a = +25c) (2) ?????????????????....0.52w junction temperature ...............................150 c lead temperature ....................................260 c storage temperature ............. ?65c to +150 c recommended operating conditions (3) input voltage.......................................1v to 12v output voltage ............................................ 1.0v operating temperature............. ?40 c to +85 c thermal resistance (4) ja jc sot23-3 ................................ 240 .... 110.. c/w notes: 1) exceeding these ratings may damage the device. 2) the maximum allowable power dissipation is a function of the maximum junction temperature t j (max), the junction-to- ambient thermal resistance ja , and the ambient temperature t a . the maximum allowable continuous power dissipation at any ambient temperature is calculated by p d (max) = (t j (max)-t a )/ ja . exceeding the maximum allowable powe r dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. internal thermal shutdown circuitry protects the device from permanent damage. 3) the device is not guaranteed to function outside of its operating conditions. 4) measured on approximately 1? square of 1 oz copper.
mp8200 ? low voltage, 1v precision shunt voltage regulator mp8200 rev. 0.9 www.monolithicpower.com 3 9/30/2009 mps proprietary information. unauthorized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. electrical characteristics i in = 100a to 10ma, t a = +25 c, unless otherwise noted. parameter symbol condition min typ max units output voltage (5) v o 0.990 1.0000 1.010 v v oerr ?10 +10 mv initial accuracy ?1 +1 % -40 c < t a < +85 c 45 temperature coefficient a grade tcv o ?40 c to +85 c 85 ppm/ c output voltage change vs. input voltage ? v r i in = 0.1ma to 10ma 4 5 mv dynamic output impedance ( ? v r / ? i r ) i in = 2ma 100a 0.5 ? minimum operating current i in 0 c < t a < +70 c 100 a voltage noise f = 0.1hz to 10hz 4 v p-p turn-on settling time t r within 0.1% of output 10 s notes: 5) the forward diode voltage characteristic at ?1ma is typically 0.65v. pin functions pin # name description 1 v+ cathode 2 v? anode 3 trim no connect
mp8200 ? low voltage, 1v precision shunt voltage regulator mp8200 rev. 0.9 www.monolithicpower.com 4 9/30/2009 mps proprietary information. unauthorized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. typical performanc e characteristics v in = 5v, v out = 1v, t a = +25oc, unless otherwise noted. v in 2v/div v out 1v/div v in 1v/div v out 0.5v/div v in 2v/div input voltage (mv) output voltage (v) input current (ma) v out 1v/div v in 2v/div v out 0.1v/div t v out vs. temperature turn on with load capacitor turn on time v in =1.3v, i in =0.5ma turn off with load capacitor line transient v in =3v to 6v, i in =0.5ma to 1ma v out vs. i in i in vs. v out -50 970 980 990 1000 1010 1020 1.000 1.002 1.004 1.006 1.008 1.010 -10 30 70 110 150 input voltage (v) 13 5 7 911 output voltage (v) 0.9 10 100 1000 10000 100000 0.94 0.98 1.02 1.06 1.10 i in =10ma i in =10ma i in =5ma i in =1ma i in =0.1ma i in =20ma i in =0.1ma
mp8200 ? low voltage, 1v precision shunt voltage regulator mp8200 rev. 0.9 www.monolithicpower.com 5 9/30/2009 mps proprietary information. unauthorized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. function block diagram r1 r2 v ref v + v - trim + - figure 1?functional block diagram
mp8200 ? low voltage, 1v precision shunt voltage regulator mp8200 rev. 0.9 www.monolithicpower.com 6 9/30/2009 mps proprietary information. unauthorized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. application information external bias resistor in the case of shunt voltage references, an external bias resistor (r bias ) is required between the supply voltage and the mp8200. r bias sets the current that is required to pass through the load and the ic. the load and supply voltages can vary, so r bias should be chosen such that is it small enough to supply the minimum current to the mp8200 when the supply voltage is at its minimum and the load current is at its maximum. in addition, r bias needs to be large enough that the quiescent current does not exceed 10ma when the supply voltage is at its maximum and the load current is at its minimum. choose r bias using the following equation: q l out supply bias i i v v r + ? = adjustable precision voltage source the mp8200 can be combined with a precision op amp to produce a precise adjustable output voltage. see figure 1. the output of the op amp is determined by the gain of the circuit using the following equation: 2 r 1 r 1 v out + = an optional capacitor can be added in parallel with r2 to filter out high frequency noise. mp8200 mp8200 -- + v cc r bias 1.0v r1 r2 c2 (opt.) v out figure 1?adjustable precision voltage source output voltage trim using a mechanical or digital potentiometer, the output voltage of the mp8200 can be trimmed to 0.5%. see figure 2. note that trimming other resistor values may not produce an accurate output from the mp8200. mp8200 v cc r bias v out figure 2?output voltage trim precise negative voltage reference the mp8200 can be configured for use in applications where a precise negative voltage reference is needed. mp8200 r1 -1.0v + - -v dd figure 3?precise ?1.0v reference choose r1 such that 100a to 10ma is provided to properly bias the mp8200, using the equation: i v 1 r dd =
mp8200 ? low voltage, 1v precision shunt voltage regulator notice : the information in this document is subject to change wi thout notice. users should warrant and guarantee that third party intellectual property rights are not infringed upon when integrating mps products into any application. mps will not assume any legal responsibility for any said applications. mp8200 rev. 0.9 www.monolithicpower.com 7 9/30/2009 mps proprietary information. unauthorized photocopy and duplication prohibited. ? 2009 mps. all rights reserved. package information sot23-3
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