 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| mp171 700 v non-isolated off-line regulator up to 60 ma output current mp171 rev. 1.0 www.monolithicpower.com 1 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. the future of analog ic technology description mp171 is a primary-side regulator that provides accurate constant voltage (cv) regulation without an opto-coupler. it supports buck, boost, buck-boost, and flyback topologies. it has an integrated 700 v mosfet to simplify the structure and reduce cost. these features make it an ideal regulator for offline low-power applications, such as home appliances and standby power. mp171 is a green-mode-operation regulator. both the peak current and switching frequency decrease as the load decreases. this feature provides excellent efficiency at light load and improves the overall average efficiency. mp171 has various protection features including thermal shutdown (tsd), vcc under- voltage lockout (uvlo), overload protection (olp), short-circuit protection (scp), and open- loop protection. mp171 is available in a small tsot23-5 package and soic-8 package. features ? primary-side cv control, supporting buck, boost, buck-boost, and flyback topologies ? integrated 700 v mosfet and current source ? < 30 mw no-load power consumption ? up to 2 w output power ? maximum dcm output current less than 40 ma ? maximum ccm output current less than 60 ma ? low vcc operating current ? frequency foldback ? limited maximum frequency ? peak current compression ? internally biased vcc ? tsd, uvlo, olp, scp, open-loop protection applications ? home appliances, white goods, and consumer electronics ? industrial controls ? standby power all mps parts are lead-free, halogen-free, and adhere to the rohs directive. fo r mps green status, please visit the mps website under quality assurance. ?mps? and ?the future of analog ic technology? are registered trademarks o f monolithic power systems, inc. typical application mp171 l n input c1 source source drain vcc fb c2 r1 l1 c4 d2 d1 vout gnd r2 c3
mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 2 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. ordering information part number package top marking mp171gj * tsot23-5 see below MP171GS ** soic-8 see below * for tape & reel, add suffix ?z (e.g. mp171gj?z). * * for tape & reel, add suffix ?z (e.g. MP171GS?z). top marking (tsot23-5) apl: product code of mp171gj; y: year code; top marking (soic-8) mp171: part number; llllllll: lot number; mps: mps prefix: y: year code; ww: week code: package reference top view top view 1 2 3 5 4 source source vcc fb drain 6 8 5 1 2 3 4 vcc fb nc drain source source 7 nc nc tsot23-5 soic-8 mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 3 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. absolute maxi mum ratings (1) drain to source (t j = +25c)-0.3 v to 700 v all other pins ................................-0.3 v to 6.5 v continuous power dissipation .....(t a = +25c) (2) tsot23-5 .................................................... 1 w soic-8 ......................................................... 1 w junction temperature ................................150c lead temperature .....................................260c storage temperature ................ -60c to +150c recommended operating conditions (3) operating junction temp (t j ). ... -40c to +125c operating vcc range ...................5.5 v to 5.7 v thermal resistance (4) ja jc tsot23-5.............................. 100 ..... 55... c/w soic-8.................................... 96 ...... 45... 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 ta. the maximum allowance continuous power dissipation at any ambient temperature is calculated by p d (max)=(t j (max)- t a )/ ja . exceeding the maximum allowance power dissipation will produce an excessive die temperature, causing the regulator to go into thermal shutdown. internal thermal shutdown circuit protects the device from permanent damage. 3) the device is not guaranteed to function outside of its operating conditions. 4) measured on jesd51-7, 4-layer pcb. mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 4 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. electrical characteristics vcc = 5.5 v, t j = -40c~125c, min and max are guaranteed by characterization, typical is tested under 25c, unless otherwise specified. parameter symbol condition min typ max units start-up current source and internal mosfet (drain) internal regulator supply current i regulator vcc = 4 v; v drain = 100 v 2.2 4.1 6 ma drain leakage current i leak vcc = 5.8 v; v drain = 400 v 10 17 a breakdown voltage v (br)dss t j = 25 c 700 v on resistance r on t j = 25c 20 25 ? supply voltage management (vcc) vcc level (increasing) where the internal regulator stops vcc off 5.4 5.7 6 v vcc level (decreasing) where the internal regulator turns on vcc on 5.1 5.5 5.8 v vcc regulator on and off hysteresis 130 250 mv vcc level (decreasing) where the ic stops vcc stop 3 3.4 3.6 v vcc level (decreasing) where the protection phase ends vcc pro 2 2.5 2.8 v internal ic consumption i cc f s = 36 khz, d = 64% 720 a internal ic consumption (no switching) i cc 200 a internal ic consumption, latch-off phase i cclatch vcc = 5.3 v 16 24 a internal current sense peak current limit i limit t j = 25c 85 105 125 ma leading-edge blanking leb1 350 ns scp threshold i scp t j = 25c 220 300 400 ma leading-edge blanking for scp (1) leb2 180 ns feedback input (fb) minimum off time minoff 7.5 10 12.5 s maximum on time manon 13 18 23 s primary mosfet feedback turn-on threshold v fb 2.45 2.55 2.65 v olp feedback trigger threshold v fb_olp 1.64 1.74 1.84 v olp delay time olp f s = 36 khz 175 ms open-loop detection v old 0.4 0.5 0.6 v thermal shutdown thermal shutdown threshold (1) 150 c thermal shutdown recovery hysteresis (1) 30 c note: 1) this parameter is guaranteed by design. mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 5 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical characteristics 710 720 730 740 750 760 770 780 790 800 810 -40 -25-10 5 20 35 50 65 80 95 110125 5.69 5.70 5.71 5.72 5.73 2.52 2.53 2.54 2.55 2.56 5.42 5.43 5.44 5.45 5.46 5.47 5.48 5.49 5.50 2.30 2.35 2.40 2.45 2.50 2.55 2.60 -40 -25-10 5 20 35 50 65 80 95 110125 -40 -25-10 5 20 35 50 65 80 95 110125 -40 -25-10 5 20 35 50 65 80 95 110125 -40 -25-10 5 20 35 50 65 80 95 110125 -40 -25-10 5 20 35 50 65 80 95 110125 -40 -25 -10 520355065 80 95 110125 -40 -25 -10 520355065 80 95 110125 -40 -25 -10 520355065 80 95 110125 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 96.0 98.0 100.0 102.0 104.0 106.0 108.0 280 285 290 295 300 305 310 9.4 9.5 9.6 9.7 9.8 9.9 10.0 mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 6 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical performance characteristics v in = 230 vac, v out = 5 v, i out = 50 ma, l = 1 mh, c out = 22 f, t a = +25c, unless otherwise noted. v ds 100v/div. i l 100ma/div. v ds 100v/div. i l 100ma/div. v ds 100v/div. i l 100ma/div. v ds 100v/div. i l 200ma/div. v ds 100v/div. i l 100ma/div. v ds 100v/div. i l 100ma/div. v ds 100v/div. i l 200ma/div. v ripple 50mv/div. v ripple 50mv/div. i out 50ma/div. mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 7 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. pin functions pin # tsot23-5 pin # soic8 name description 1 1 vcc control circuit power supply. 2 2 fb regulator feedback. 3,4 3,4 source internal power mosfet so urce and ground reference for vcc and fb. 5 7 drain internal power mosfet drai n and high-voltage current source input. 5,6,8 nc no connection. mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 8 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. functional block diagram drain vcc fb source start-up unit power management feedback control driving signal management protection unit peak current limitation figure 1?functional block diagram mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 9 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. operation mp171 is a green-mode-operation regulator: the peak current and the switching frequency both decrease with a decreasing load. as a result, it offers excellent light-load efficiency and improves overall average efficiency. also, the regulator incorporates multiple features and operates with a minimal number of external components. the mp171 acts as a fully integrated regulator when used in buck topology (see typical application on page 1). start-up and under-voltage lockout the internal high-voltage regulator self-supplies the ic from drain. when vcc voltage reaches vcc off , the ic starts switching, and the internal high-voltage regulator turns off. the internal high- voltage regulator turns on to charge the external vcc capacitor when the vcc voltage falls below vcc on . a small capacitor (in the low f range) maintains the vcc voltage and thus lowers the capacitor cost. the ic stops switching when the vcc voltage drops blow vcc stop . under fault conditions?such as olp, scp, and tsd?the ic stops switching, and an internal current source (~16 a) discharges the vcc capacitor. the internal high-voltage regulator will not charge the vcc capacitor until the vcc voltage drops below vcc pro . the re-start time can be estimated using equation (1): pro off pro restart vcc cclatch regulator vcc vcc vcc vcc c ii ?? ?? ?? ? ? ?? ?? ?? (1) soft start (ss) the ic stops operation when the vcc voltage drops below vcc stop ; the ic begins operation when vcc charges to vcc off . every time the chip starts operation there is a soft-start period. the soft start prevents the inductor current from overshooting by limiting the minimum off time. mp171 adopts a 2 phase minimum off time limit soft start. each soft-start phase retains 128 switching cycles. during the soft start, the off time limit gradually shortens from 48 s to 18 s and finally reaches the normal operation off time limit (see figure 2). 128 switching cycle 48 us ? 18 us ? 10 us driver 128 switching cycle figure 2? minoff ? at start-up constant voltage (cv) operation the mp171 regulates the output voltage by monitoring the sampling capacitor. at the beginning of each cycle, the integrated mosfet turns on while the feedback voltage drops below the 2.55 v reference voltage, which indicates insufficient output voltage. the peak current limitation determines the on period. after the on period elapses, the integrated mosfet turns off. the sampling capacitor (c3) voltage is charged to the output voltage when the freewheeling diode (d1) turns on. in his way, the sampling capacitor (c3) samples and holds the output voltage for output regulation. the sampling capacitor (c3) voltage decreases when the l1 inductor current falls below the output current. when the feedback voltage falls below the 2.55 v reference voltage, a new switching cycle begins. figure 3 shows this operation in continuous conduction mode (ccm). mosfet diode i l i peak i o v o v fb 2.55 v figure 3?v fb vs. v o equation (2) determines the output voltage: ? ?? r1 r2 vo 2.55v r2 (2) mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 10 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. frequency foldback and peak current compression the mp171 remains highly efficient at light-load conditions by reducing the switching frequency automatically. under light-load or no-load conditions, the output voltage drops very slowly, which increases the mosfet off time. thus, the frequency decreases along with the load. the switching frequency is determined with equation (3) and equation (4): in o o s peak o in (v v ) v f 2l(i i ) v ? ?? ? , for ccm (3) ? ?? in o o o s 2 peak in 2(v v ) i v f li v , for dcm (4) as the peak current limit decreases from 105 ma, the off time increases. in standby mode, the frequency and the peak current are both minimized, allowing for a smaller dummy load. as a result, peak current compression helps further reduce no-load consumption. the peak current limit can be estimated from equation (5) where off is the off time of the power module: peak off i105ma(0.4ma/s)(10s) ?? ????? (5) ea compensation - + v fb m - + v ref 2.55v ea - + fb comparator v ramp v ramp i peak + + figure 4?ea and ramp compensation mp171 has an internal error amplifier (ea) compensation loop. it samples the feedback voltage 6 s after the mosfet turns off and regulates the output based on the 2.55 v reference voltage. ramp compensation an internal ramp compensation circuit improves the load regulation. as shown in figure 4, a voltage sinking source is added to pull down the reference voltage of the feedback comparator. the ramp compensation is relative to the mosfet off time, and increases exponentially as the off time increases. the compensation is about 1mv/s under min off time switching condition. over-load protection (olp) the maximum output power of the mp171 is limited by the maximum switching frequency and the peak current limit. if the load current is too large, the output voltage drops, causing the fb voltage to drop. when the fb voltage drops below v fb_olp , it is considered an error flag, and the timer starts. if the timer reaches 170 ms (f s = 36 khz) , olp occurs. this timer duration avoids triggering olp when the power supply starts up or the load transitions. the power supply should start up in less than 170 ms (f s = 36 khz) . the olp delay time is calculated using equation (6): delay s 36khz 170ms f ?? ? (6) short-circuit protection (scp) the mp171 monitors the peak current and shuts down when the peak current rises above the scp threshold through short-circuit protection. the power supply resumes operation with the removal of the fault. thermal shutdown (tsd) to prevent thermal induced damage, the mp171 stops switching when the junction temperature exceeds 150 c . during thermal shutdown (tsd), the vcc capacitor is discharged to vcc pro , and the the internal high-voltage regulator re-charges. mp171 recovers when the junction temperature drops below 120c. open-loop detection if v fb is less than 0.5 v, the ic stops switching, and a re-start cycle begins. during a soft start, the open-loop detection is blanked. mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 11 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. leading-edge blanking an internal leading-edge blanking (leb) unit avoids premature switching pulse termination due to a turn-on spike. a turn-on spike is caused by parasitic capacitance and reverse recovery of the freewheeling diode. during the blanking time, the current comparator is disabled and cannot turn off the external mosfet. figure 5 shows the leading-edge blanking. i limit 350ns i ds t figure 5?leading-edge blanking mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 12 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. application information table 1?common topologies using mp171 topology circuit schematic features high-side buck mp171 1 2 3 4 5 drain vcc fb source source vin vo 1. no isolation 2. positive output 3. low cost 4. direct feedback high-side buck-boost mp171 1 2 3 4 5 drain vcc fb source source vin vo 1. no isolation 2. negative output 3. low cost 4. direct feedback boost mp171 1 2 3 4 5 drain vcc fb source source vin vo 1. no isolation 2. positive output 3. low cost 4. direct feedback flyback * * t v in * drain vcc fb source source mp171 1 2 3 4 5 1. isolation 2. positive output 3. low cost 4. indirect feedback mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 13 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. topology options mp171 can be used in common topologies such as buck, boost, buck-boost, and flyback (see table 1). component selection below is based on the typical application of mp173 (see it on page 1). component selection input capacitor the input capacitor supplies the dc input voltage for the converter. figure 6 shows the typical dc bus voltage waveform of a half-wave rectifier and a full-wave rectifier. vin dc input voltage t v dc(min) v dc(max) ac input voltage vin dc input voltage t v dc( min) v dc(max) ac input voltage figure 6?input voltage waveform typically, the use of a half-wave rectifier requires an input capacitor rated at 3 f/w for the universal input condition. when using a full-wave rectifier, an input capacitor is chosen between 1.5~2 f/w for the universal input condition. a half-wave rectifier is recommended for a < 2 w output application, otherwise use a full-wave rectifier. under very low input voltage, the inductor current ramps up slowly; it may not reach the current limit during manon , so the mosfet maximum on time should be less than the minimum value of manon . inductor the mp171 has a minimum off-time limit that determines the maximum power output. a power inductor with a larger inductance increases the maximum power. using a very small inductor may cause failure at full load. estimate the maximum power using equation (7) and equation (8): ? ?? ominoff omax o peak v pv(i ) 2l , for ccm (7) ?? ? 2 o max peak minoff 11 pli 2 , for dcm (8) for mass production, tolerance on the parameters (such as peak current limitation) and the minimum off time should be taken into consideration. freewheeling diode select a diode with a maximum reverse-voltage rating greater than the maximum input voltage and a current rating determined by the output current. the reverse recovery of the freewheeling diode affects efficiency and circ uit operation during a ccm condition, so use an ultra-fast diode such as the egc10jh. output capacitor the output capacitor is required to maintain the dc output voltage. estimate the output voltage ripple using equation (9) and equation (10): ccm _ ripple esr so i vir 8f c ? ???? , for (9) 2 pk o o dcm _ ripple pk esr so pk ii i vir fc i ?? ? ?? ?? ?? ?? ?? , for dcm (10) it is recommended to use ceramic, tantalum, or low esr electrolytic capacitors to reduce the output voltage ripple. feedback resistors the resistor divider determines the output voltage. choose appropriate r1 and r2 values to maintain v fb at 2.55 v. an excessively large value for r2 should be avoided. sampling capacitor the sampling capacitor (c3) samples and holds the output voltage for feedback. with r1 and r2 fixed, a small sampling capacitor result in poor regulation at light loads, and large sampling capacitor affect the circuit operation. roughly estimate an optimal capacitor value using equation (11): mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 14 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. oo oo fb 12o 12o vc vc 1 c 2r r i r r i ?? ? ? ?? (11) dummy load a dummy load is required to maintain the load regulation. this ensures there is sufficient inductor energy to charge the sample and hold capacitor to detect the output voltage. normally, a 3 ma dummy load is needed and can be adjusted according to the regulated voltage. there is a compromise between small, no-load consumption and good, no-load regulation, especially for applications that require 30 mw no- load consumption. use a zener to reduce no- load consumption if no-load regulation is not a concern. auxiliary vcc supply mp171 vcc fb source source c2 r1 r2 d2 c3 l1 vout r3 d3 figure 7?auxiliary vcc supply circuit for applications with v o above 7 v, the mp171 achieves the 30 mw no-load power requirement by adopting an external vcc supply to reduce power consumption on the internal vcc regulator (see figure 7). this auxiliary vcc supply is derived from the resistor connected between c2 and c3. c3 should be set larger than the value recommendation above. d3 is used in case vcc interferes with fb. r3 is determined using equation (12): ofw s vv 5.8v r3 i ?? ? ????????????????????????????????????????????????? (12) ? where i s is the vcc consumption under a no- load condition, and v fw is the forward voltage drop of d3. because i s varies in different applications, r3 should be adjusted to meet the application?s specific i s . in a particular configuration, i s is measured at about 200 a. surge performance an appropriate input capacitor value should be chosen to obtain good surge performance. figure 8 shows the half-wave rectifier. table 2 shows the capacitance required under normal conditions for different surge voltages. fr1 is a 20 ? /2 w fused resistor, and l1 is 1 mh for this recommendation. l1 c1 c2 n l fr1 figure 8?half-wave rectifier table 2?recommended capacitance surge voltage 500 v 1000 v 2000 v c1 1 f 2.2 f 3.3 f c2 1 f 2.2 f 3.3 f pcb layout guidelines efficient pcb layout is critical for reliable operation, good emi, and thermal performance. for best results, follow the guidelines below: 1) minimize the loop area formed by the input capacitor, ic, freewheeling diode, inductor, and output capacitor. 2) place the power inductor far away from the input filter while keeping the loop area to the inductor at a minimum (see example below). 3) place a capacitor valued at several hundred pf between fb and source as close to the ic as possible. 4) connect the exposed pads or large copper area with drain to improve thermal performance. mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 15 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. top layer bottom layer design example table 3 shows a design example for the following application guideline specifications: table 3?design example v in 85 vac to 265 vac v out 5 v i out 50 ma the detailed application schematic is shown in figure 9. the typical performance and circuit waveforms have been shown in the ?typical performance characteristics? section. for additional device applications, please refer to the related evaluation board datasheets. mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 16 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. typical application circuits figure 9 shows a typical application example of a 5 v, 50 ma non-isolated power supply using the mp171. l n gnd vout gnd 39 rf1 470 pf c7 2.2 f c2 d1 srgc10jh 22 f c5 stth1r06 600 v/1 a d3 2.2 f/400 v c3 2.2f/400v c4 1mh l1 41.2 k r1 39.2 k r2 22 nf c1 1.2 k r3 1mh l2 d4 srjc10jh d2 srgc10jh 5v/50ma 85 vac~265vac drain 7 nc 6 nc 5 nc 8 vcc 1 fb 2 sourc e 3 sourc e 4 u1 MP171GS nc c6 figure 9?typical application at 5 v, 50 ma mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 17 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. flow chart uvlo, scp, olp, otp and open-loop protections are auto restart power on vcc>vcc off internal high voltage regulator on y n soft start monitor fb voltage monitor vcc olp fault logic high y tsd, scp and open-loop monitor vcc decrease to vcc pro shut down internal high voltage regulator n fault logic high? y n stop operation y n y < v fb turn on the mosfet y n counts to 6144 switching cycle? y y n mp171 ?non-isolated offline regulator mp171 rev. 1.0 www.monolithicpower.com 19 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. package information tsot23-5 0.30 0.50 seating plane 0. 95 bsc 0.90 1.30 1. 45 max 0. 00 0. 15 top vie w front view side vie w recommended land pattern 2. 80 3. 00 1.50 1.70 2.60 3.00 13 4 5 0.09 0.20 note : 1) all dimensions are in millimeters . 2) package length does not include mold flash, protrusion or gate burr . 3) package width does not include interlead flash or protrusion . 4) lead coplanarit y (bottom of leads after forming ) shall be 0. 10 millimeters max . 5) drawing conforms to jedec mo -178, variation aa . 6) drawing is not to scale . 0.30 0.55 0 o - 8 o 0.25 bsc gauge plane 2.60 typ 1 . 20 typ 0.95 bsc 0.60 typ see detail " a " detail a mp171 ?non-isolated offline regulator 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. mp171 rev. 1.0 www.monolithicpower.com 20 9/30/2015 mps proprietary information. patent protec ted. unauthorized photocopy and duplication prohibited. ? 2015 mps. all rights reserved. package information soic-8 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 see detail "a" 0.0075(0.19) 0.0098(0.25) 0.150(3.80) 0.157(4.00) pin 1 id 0.050(1.27) bsc 0.013(0.33) 0.020(0.51) seating plane 0.004(0.10) 0.010(0.25) 0.189(4.80) 0.197(5.00) 0.053(1.35) 0.069(1.75) top view front view 0.228(5.80) 0.244(6.20) side view 14 85 recommended land pattern 0.213(5.40) 0.063(1.60) 0.050(1.27) 0.024(0.61) 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 aa. 6) drawing is not to scale . 0.010(0.25) bsc gauge plane |
Price & Availability of MP171GS
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |