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MP6402 dual, high psrr 500ma linear regulator with integrated reset circuit MP6402 rev.1.0 www. monolithicpower.com 1 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. the future of analog ic technology description the MP6402 is a dual-channel, high psrr linear regulator with reset function. the outputs range from 0.9v and 3.3v with 1.5% voltage accuracy at both channels by operating from a +2.5v to +5.5v input. out2 pin voltage is recommended to be higher than out1 pin voltage. short circuit protection and thermal protection are built in to prevent damage caused by output short circuit and overloading, respectively. a reset circuit is designed to monitor output voltage of channel 2. the r e s e t becomes active (low) when out2 pin voltage drops below its threshold. to ensure that a complete reset occurs, the r e s e t remains active for a pre-set delay time. the delay time is programmable by the user through changing the external capacitor. the MP6402 is available in soic8e and 3x3mm tqfn8 packages and is specified for operation t j from -40 c to +125 c. features ? up to 500ma output current ? high output voltage accuracy (1.5 ) ? high reset voltage accuracy (3 ) ? programmable reset delay time ? high psrr: 60db at 100hz ? 15v rms low noise outputs ? built-in short circuit protection ? built-in thermal protection ? output discharge ? soic8e and 3x3mm tqfn8 applications ? consumer electronics ? blu-ray ? portable gps devices ? wireless devices ?mps? and ?the future of analog ic technology? are registered trademarks o f monolithic power systems, inc. typical application MP6402 in in reset out1 out2 en gnd extcap reset v in 5v v out2 en v out1 c4 3300pf r1 22.1k
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 2 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. ordering information part number package top marking junction air temperature (t j ) MP6402dn-ef-lf-z * soic8e 6402dnef -40c to +125c MP6402dqt-ef-lf-z ** tqfn8 (3x3mm) 9x -40c to +125c * for tape & reel, add suffix ?z (e.g. MP6402dn?z); for rohs compliant packaging, add suffix ?lf (e.g. MP6402dn?lf?z). ** for tape & reel, add suffix ?z (e.g. MP6402dqt?z); for rohs compliant packaging, add suffix ?lf (e.g. MP6402dqt?lf?z). ordering guide*** MP6402dqt output voltage 2 (table 1) output voltage 1 (table 1) package temperature _ _ - lfz dn table 1 ? output voltage selector guide code v out1 v out2 a 0.9 -- b 1.05 -- c 1.2 -- d 1.3 1.3 e 1.8 1.8 f 2.5 2.5 g 2.8 2.8 h -- 3.3 *** code in bold are standard versions. for other output voltage between 0.9v to 3.3v contact factory for availability. minimum order quantity on no-standard version in 25,000 units.
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 3 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. package reference in in en gnd out1 out2 reset extcap 1 2 3 4 8 7 6 5 top view top view 1 2 3 4 8 7 6 5 in in en gnd out1 out2 reset extcap soic8e tqfn8 (3mm x 3mm) absolute maxi mum ratings (1) in ...................................................... -0.3v to 6v r e s e t ............................................. -0.3v to 6v all other pins .................................. -0.3v to +6v continuous power dissipation. (t a = +25c) (2) soic8e ...................................................... 2.2w tqfn8 (3mm x 3mm) ................................ 2.6w storage temperature range ..... -55c to 150c junction temperature ............................... 150c lead temperature (soldering, 10sec) ...... 260c recommended operating conditions (3) input voltage v in ............................. 2.5v to 5.5v operating junct. temp (t j ) ...... -40 c to +125 c thermal resistance (4) ja jc soic8e ................................... 55 ...... 12 ... c/w tqfn8 (3mm x 3mm) ............ 48 ...... 11 ... c/w notes: 1) exceeding these ratings may damage the device. 2) the maximum allowable powe r 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 power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. internal thermal shut down circuitry protects the device from permanent damage. thermal shutdown engages at t j =150 o c(typ) and disengages at t j =130 o c(typ) 3) the device is not guaranteed to function outside of its operating conditions. 4) measured on jesd51-7, 4-layer pcb.
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 4 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. electrical characteristics v in = v out2 +0.5v or 2.5v for each ldo. typical value at t a = +25c unless otherwise noted. parameter symbol condition min typ max unit quiescent current (on) iq en activate without load 0.4 0.58 ma quiescent current (off) iqebl en deactivate 17 36 a output voltage range v out 0.9 3.3 v dropout voltage v drop i out =500ma 260 mv output voltage accuracy i out =10ma -1.5 1.5 % i out =10ma, t a = - 40 c to 85 c -2.3 2.3 % output current limit i lim 550 ma short circuit current i st out short to gnd 200 ma load regulation v out1 v in =(v out1 +0.5v or 2.5v), i out1 =1ma to 500ma 45 mv v out2 v in =(v out2 +0.5v or 2.5v), i out2 =1ma to 500ma 50 mv line regulation v line1 v in =(v out1 +0.5v or 2.5v) to 5.5v, i out1 =10ma 0.05 0.1 %/v v line2 v in =(v out2 +0.5v or 2.5v) to 5.5v, i out2 =10ma 0.05 0.1 %/v psrr v out1 =1.8v psr f=100hz, i out1 =100ma 60 db v out2 =2.5v psr2 f=100hz, i out2 =100ma 51 db output voltage noise 100hz to 80khz, c out =3.3f, i out =10ma 15 v rms reset out reset delay time rstdly v in =v out2 +0.5v, extcap=3300pf 1.4 2.1 2.8 ms reset voltage rstvol v in falling 92.5 %v out2 reset hysteresis v hys 2 %v out2 reset voltage accuracy -3 3 % reset low level voltage rstlow i in =2ma 0.2 v en input high voltage 1.5 v en input high voltage 0.6 v
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 5 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. pin functions pin # name description 1 in power supply input pin. 2 in power supply input pin. 3 en enable (active high). connect en to in generally. don?t float en pin. 4 gnd ground. 5 extcap reset delay time set external capacitor connect pin. 6 r e s e t reset signal output pin. 7 out2 channel 2 ldo output pin. 8 out1 channel 1 ldo output pin.
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 6 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. typical performanc e characteristics v in = 3v, v out1 =1.8v, v out2 =2.5v, c in = c out1 = c out2 =3.3f, t a = +25oc, unless otherwise noted. i out1 =i out2 =0ma 250 270 290 310 330 350 370 390 410 430 450 -40 -20 0 20 40 60 80 100 quiescent current vs. temperature i out1 =i out2 =500ma quiescent current vs. temperature 900 950 1000 1050 1100 1150 1200 -40 -20 0 20 40 60 80 100 0 50 100 150 200 250 300 350 -40 -20 0 20 40 60 80 100 dropout voltage (mv) dropout voltage vs. temperature 0 50 100 150 200 250 300 0 100 200 300 400 500 output current(ma) dropout voltage (mv) dropout voltage vs. output current 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 3 3.5 4 4.5 5 5.5 input voltage(v) en high threshold en low threshold en threshold vs. input voltage 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 -40 -20 0 20 40 60 80 100 v en (v) v en (v) en threshold vs. temperature en high threshold en low threshold 500 600 700 800 900 1000 -40 -20 0 20 40 60 80 100 current limit(ma) current limit vs. temperature -0. 3 -0. 2 -0. 1 0 0.1 0.2 0.3 3 3.5 4 4.5 5 5.5 input voltage(v) output voltage accuracy(%) v out1 =1.8v i out =0a i out =500ma line regulation -0. 3 -0. 2 -0. 1 0 0.1 0.2 0.3 3 3.5 4 4.5 5 5.5 input voltage(v) output voltage accuracy(%) i out =0a i out =500ma v out2 =2.5v line regulation temperature ( o c) temperature ( o c) temperature ( o c) temperature ( o c) temperature ( o c)
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 7 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. typical performance characteristics ( continued ) v in = 3v, v out1 =1.8v, v out2 =2.5v, c in = c out1 = c out2 =3.3f, t a = +25oc, unless otherwise noted. temperature ( o c) temperature ( o c) -1.1 -0.7 -0.3 0.1 0.5 0.9 0 100 200 300 400 500 output current(ma) output voltage accuracy(%) v out1 =1.8v load regulation v out2 =2.5v load regulation -1.1 -0.7 -0.3 0.1 0.5 0.9 0 100 200 300 400 500 output current(ma) output voltage accuracy(%) -0. 8 -0. 6 -0. 4 -0. 2 0 0.2 0.4 0.6 0.8 -40 -20 0 20 40 60 80 100 output voltage accuracy(%) i out1 =10ma v out2 v out1 output voltage accuracy vs. temperature -20 -10 0 10 20 30 40 50 60 70 80 10 1 10 2 10 3 10 4 10 5 10 6 10 7 frequency(hz) psrr (db) v out1 v out2 psrr frequency ranged from 10hz to 2mhz i o =100ma 0.1 1 10 100 0 100 200 300 400 500 output current(ma) region of stable c out esr vs. output current unstable range stable range reset delay time vs. ext cap ext cap (nf) delay time (ms) delay time (ms) 1 1.5 2 2.5 3 -40 -15 10 35 60 85 reset delay time vs. temperature extcap=3300pf 1 10 100 1000 10000 1 10 100 1000 10000
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 8 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. typical performance characteristics ( continued ) v in = 3v, v out1 =1.8v, v out2 =2.5v, c in = c out1 = c out2 =3.3f, t a = +25oc, unless otherwise noted. v out1 1v/div i out1 500ma/div v out2 2v/div i out2 500ma/div v in 2v/div v out1 1v/div i out1 500ma/div v out2 2v/div i out2 500ma/div v in 2v/div v out1 1v/div i out1 500ma/div v out2 2v/div i out2 500ma/div en 3v/div 1ms/div 4ms/div 10ms/div 4ms/div i out 500ma/div v out1 /ac 50mv/div v in 2v/div v in 2v/div v out1 1v/div v out1 /ac 10mv/div v out2 /ac 10mv/div i out 200ma/div input power start up i out1 =i out2 =500ma with resistor load input power shutdown i out1 =i out2 =500ma with resistor load en start up i out1 =i out2 =500ma with resistor load v out1 1v/div i out1 500ma/div v out2 2v/div i out2 500ma/div en 3v/div en shutdown i out1 =i out2 =500ma with resistor load line transient v in =3v to 5.5v, i out =500ma with resistor load load transient v out1 =1.8v, i out =10ma to 500ma with resistor load i out 500ma/div v out2 /ac 50mv/div load transient v out2 =2.5v, i out =10ma to 500ma with resistor load over current protection entry v in 2v/div v out1 1v/div v out2 2v/div i in 200ma/div over current protection steady state
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 9 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. typical performance characteristics ( continued ) v in = 3v, v out1 =1.8v, v out2 =2.5v, c in = c out1 = c out2 =3.3f, t a = +25oc, unless otherwise noted. v out1 1v/div v in 2v/div i out 200ma/div v out2 1v/div reset 2v/div en 2v/div 2ms/div reset timing extcap=3300pf over current protection recovery
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 10 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. block diagram shutdown logic thermal shut down detecter reset timer current limit current limit reference voltage en in out1 out2 extcap gnd reset -- + -- + figure 1?MP6402 block diagram
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 11 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. timing diagram =undefined state v it 0.8v 0 0 0 t t t td=reset delay vout2 vin reset td td figure 2?reset timing diagram
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 12 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. operation the MP6402 integrates two low-noise, low- dropout, low-quiescent current linear regulators with a reset circuit. it operates from a 2.5v to 5.5v input voltage. the dual-channel ldos can supply up to 500ma of load current. the internal reset circuit is used to monitor the output voltage of channel 2. the r e s e t becomes active (low) when output voltage drops below its threshold. the MP6402 uses the internal p-channel mosfet as the pass element and features internal thermal shutdown and internal current limit circuits. linear regulator the MP6402 integrates dual-channel ldos. the output voltages are fixed. their values range from 0.9v and 3.3v with 1.5% accuracy. each channel of MP6402 can supply up to 500ma of load current. reset function the reset circuit monitors the out2 pin voltage. r e s e t is a open-drain, active-low signal pin. it should be connected to power supply through a pull up resistor (r1 should be larger than 10k ? ). r e s e t becomes active (low) when output voltage of channel 2 drops below its threshold . the thermal shutdown will make the r e s e t active. when the activated triggering condition is removed, r e s e t will become inactive after a pre-set delay time. the delay time is programmable through external capacitor between extcap and gnd. en shutdown the MP6402 can be switched on or off by a logic input at the en pin. a high voltage at this pin will turn the device on. when the en pin is low, the regulator is off and the supply current is reduced. if this feature is not to be used, the en input should be tied to in pin to keep the regulator on at all time. do not float the en pin. current limit the MP6402 includes two independent current limit structures which monitor and control the gate voltage of the pass element to limit the guaranteed maximum output current to 500ma. output discharge the part involves a discharge function that provides a 100 ? resistive discharge path for the external output capacitor. the function will be active when the part is disabled and it will be done in a very limited time. thermal shutdown thermal protection turns off the pass element when the junction temperature exceeds +150oc, allowing cooling the ic. when the ic?s junction temperature drops by 20oc, the pass element will be turned on again. thermal protection limits total power dissipation in the MP6402. for reliable operation, junction temperature should be limited to 125 oc maximum.
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 13 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. application information operating region and power dissipation the maximum power dissipation of MP6402 depends on the thermal resistance of the case and circuit board, the temperature difference between the die junction and ambient air, and the rate of airflow. the power dissipation across the device is p = i out x (v in - v out ) the maximum power dissipation is: p d (max) = (t j (max)-t a )/ ja where (t j (max) ? t a ) is the temperature difference between the MP6402 die junction and the surrounding environment, ja is the thermal resistance from the junction to the surrounding environment. the fin of the MP6402 performs the dual function of providing an electrical connection to ground and channeling heat away. connect the fin to ground using a large pad or ground plane. input capacitor selection using a capacitor whose value is higher than 1f on the MP6402 input and the amount of capacitance can be increased without limit. larger values will help improve line transient response with the drawback of increased size. ceramic capacitors are preferred. output capacitor selection the MP6402 is designed specifically to work with very low esr ceramic output capacitor in space- saving and performance consideration. a ceramic capacitor in the range of 3.3f and 10f, and with esr lower than 0.5 ? is suitable for the MP6402 application circuit. output capacitor of larger values will help to improve load transient response and reduce noise with the drawback of increased size. programmable reset delay time the reset delay time is determined by the value of external capacitor (c4) connected to extcap pin. typically the reset delay time is 2.1msec when the external capacitor is 3300pf. for a given delay time, the capacitor value can be calculated using the following equation: 0.1 ] 6 . 0 ) nf ( c [ ) ms ( t 4 d + = the reset delay time is determined by the charge time of external capacitor. stray capacitance may cause errors of the delay time. a ceramic capacitor with low leakage is strongly recommended.
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic MP6402 rev.1.0 www. monolithicpower.com 14 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. package information soic8e (exposed pad) see detail "a" 0.0075(0.19) 0.0098(0.25) 0.050(1.27) bsc 0.013(0.33) 0.020(0.51) seating plane 0.000(0.00) 0.006(0.15) 0.051(1.30) 0.067(1.70) top view front view side view bottom view note: 1) control dimension is in inches. dimension in bracket is in millimeters. 2) package length does not include mold flash, protrusions or gate burrs. 3) package width does not include interlead flash or protrusions. 4) lead coplanarity (bottom of leads after forming) shall be 0.004" inches max. 5) drawing conforms to jedec ms-012, variation ba. 6) drawing is not to scale. 0.089(2.26) 0.101(2.56) 0.124(3.15) 0.136(3.45) recommended land pattern 0.213(5.40) 0.063(1.60) 0.050(1.27) 0.024(0.61) 0.103(2.62) 0.138(3.51) 0.150(3.80) 0.157(4.00) pin 1 id 0.189(4.80) 0.197(5.00) 0.228(5.80) 0.244(6.20) 14 85 0.016(0.41) 0.050(1.27) 0 o -8 o detail "a" 0.010(0.25) 0.020(0.50) x 45 o 0.010(0.25) bsc gauge plane
MP6402 ?dual 500ma ldo linear regulato rs with integrated reset ic notice: the information in this document is subject to change wi thout notice. users should warra nt and guarantee that third party intellectual property rights are not infringed upon w hen integrating mps products into any application. mps will not assume any legal responsibility for any said applications. MP6402 rev. 1.0 www. monolithicpower.com 15 4/8/2011 mps proprietary information. unaut horized photocopy and duplication prohibited. ? 2011 mps. all rights reserved. tqfn8 (3mm x 3mm) side view top view 1 8 5 4 bottom view 2.90 3.10 1.45 1.75 2.90 3.10 2.25 2.55 0.65 bsc 0.20 0.30 0.70 0.80 0.00 0.05 0.20 ref pin 1 id marking 1.70 0.65 0.25 recommended land pattern 2.90 pin 1 id see detail a 2.50 0.70 pin 1 id option b r0.20 typ. pin 1 id option a 0.30x45 o typ. detail a 0.30 0.50 pin 1 id index area

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