M78SA switching regulator 0.5a , s md package e - mail:sales@minmax.com.tw tel:886 - 6 - 2923150 201 5 / 07/ 3 1 rev: 7 page 1 of 6 ? features ? industrial smd package ? fully regulated output voltage ? low ripple & noise ? excellent efficiency up to 97 % ? operating ambient temp. range - 40 c to +90 c ? no min. load requirement ? over temp. and short circuit protection ? remo te on/off control, output voltage trim ? qualified for lead - free reflow solder process according to ipc/jedec j - std - 020d.1 ? tape & reel package available product overview the minmax m78 s a series is a new range of switching regulators designed as a d rop - in replacement for old lm78xx linear regulators with low efficiency.the very high efficiency of these step - down converters allow an operating temperature up to 8 0c at full - load without need of a ny heatsink. the high efficiency and low stand - by power c onsumption of these switching regulators offer the designer a new, cost - efficient solution for many applications. model selection guide model number input voltage range (6) output voltage output current max. c apacitive load efficiency (typ .) efficiency ( typ.) normal adjust range (8) max. @m in . vin @max. vin vdc vdc vdc ma f % % M78SAr015 - 0.5 4.75 ~ 32 1.5 1.4~2.5 500 220 73 63 M78SAr018 - 0.5 1.8 1.5~3 500 220 82 71 M78SAr025 - 0.5 2.5 1.5~3 500 220 87 77 M78SAr033 - 0.5 3.3 3~5.5 500 220 91 81 m7 8sar05 - 0.5 6. 5 ~ 32 5 3~8 500 220 94 86 M78SAr065 - 0.5 8 ~ 32 6.5 3.3~11 500 220 95 88 M78SAr09 - 0.5 1 1 ~ 32 9 4.5~12.6 500 220 96 92 M78SAr12 - 0.5 15 ~ 32 12 4.5~1 3.5 500 220 97 94 M78SAr15 - 0.5 18 ~ 32 15 4.5~15.5 500 220 97 95 input specifications pa rameter conditions min. typ. max. unit input surge voltage ( 1 sec. max. ) - 0. 3 --- 34 vdc internal filter type capacitor input filter all models internal capacitor short circuit input power --- --- 1.5 w input current @no load --- 5 --- ma remote on/off control parameter conditions min. typ. max. unit converter on open or 2.4v M78SA switching regulator 0.5a , s md package e - mail:sales@minmax.com.tw tel:886 - 6 - 292 3150 201 5 / 07 / 3 1 rev: 7 page 2 of 6 ? output specifications parameter conditions min. typ. max. unit output v oltage setting accuracy --- 2. 0 3. 0 % vnom. line regulation vin=min. to max. @full load 1.5v to 6.5v --- 0 . 2 0 . 4 % 9v to 15v --- 0 . 1 0 . 2 % load regulation io= 10 % to 100% 1.5v to 6.5v --- 0 . 4 0 .6 % 9v to 15v --- 0 . 25 0.4 % minimum load no minimum load requirement ripple & noise 0 - 20mhz bandwidth 1.5v to 6.5v --- --- 30 mv p - p 9v to 15v --- --- 40 mv p - p transient recovery time 5 0 % load step change --- 100 --- sec transient response deviation --- 2 --- % temperature coefficient --- --- 0.0 15 %/ short circuit protection continuous , automatic recover y general specifications parameter conditions min. typ. max. unit i/o isolation voltage none switching frequency 280 33 0 380 khz mtbf (calculated) mil - hdbk - 217f@25 , ground benign 2,000,000 hours moisture sensitivity level (msl) ipc/jedec j - std - 020d .1 level 2 environmental specifications parameter conditions min. typ . max. unit operating ambient te mperature range ( see power derating curve ) natural convection - 40 --- + 90 case temperature --- --- + 100 storage temperature - 55 --- +125 thermal shutdown internal ic junction --- 160 --- humidity (non condensing) --- --- 95 % rel. h cooling natural convection lead - free reflow solder process ipc/jedec j - std - 020d.1 emc specifications parameter standards & level performance emi radiation without adding any external components en55022, fcc part 15 class b conduction with external componen ts ems esd en61000 - 4 - 2 a ir 8kv a radiated immunity en61000 - 4 - 3 3 v/m a fast transient (4) en61000 - 4 - 4 0.5 kv a conducted immunity en61000 - 4 - 6 3 vrms a pfmf en61000 - 4 - 8 3 a/m a
M78SA switching regulator 0.5a , s md package e - mail:sales@minmax.com.tw tel:886 - 6 - 292 3150 201 5 / 07 / 3 1 rev: 7 page 3 of 6 ? emi filter meets conducted emi en55022 class b; fcc part 15 level a class c1 c2 c3 l1 class a --- 4.7 f/50v 1206 mlcc 4.7 f/50v 1206 mlcc wurth elektronik no. 744774033 class b 4.7 f/50v 1206 mlcc 4.7 f/50v 1206 mlcc 4.7 f/50v 1206 mlcc wurth elektronik no. 74477410 power derating curve notes 1 specifications typical at ta=+25 , resistive load, nominal input voltage, rated output current unless otherwise noted. 2 other input and output voltage may be available, please contact factory. 3 we recommend to protect the convert er by a slow blow fuse in the input supply line. 4 the M78SA series can meet en 61000 - 4 - 4 by adding a capacitor across the input pins. suggested capacitor chemi - con ky 330 f/100v. 5 that natural convection is about 20lfm but is not equal to still air ( 0 lfm). 6 w ith a input capacitor 22 f /50v for input voltage >28vd c , t he input voltage allows 32vdc, max. 7 input voltage must be higher than output voltage set:>1.5v for 3.3v~5v and >3v for 6.5v~15v. 8 specifications are subject to change without notice . ~ a m b i e n t t e m p e r a t u r e o u t p u t p o w e r ( % ) 0 2 0 4 0 6 0 8 0 1 0 0 - 4 0 0 2 0 6 0 1 0 0 1 1 0 8 0 4 0 n a t u r a l c o n v e c t i o n 2 0 l f m c M78SA module l1 c3 c2 c1 +vin gnd +vout load
M78SA switching regulator 0.5a , s md package e - mail:sales@minmax.com.tw tel:886 - 6 - 292 3150 201 5 / 07 / 3 1 rev: 7 page 4 of 6 ? adjustment resistor values M78SAr015 - 0.5 M78SAr018 - 0.5 M78SAr025 - 0.5 M78SAr033 - 0.5 M78SAr05 - 0.5 M78SAr065 - 0.5 M78SAr09 - 0.5 M78SAr12 - 0.5 M78SAr 15 - 0.5 vout(nom.) 1.5vdc 1.8vdc 2.5vdc 3.3vdc 5.0vdc 6.5vdc 9.0vdc 12vdc 15vdc vout(adj) r1 r2 r1 r2 r1 r2 r1 r2 r1 r2 r1 r2 r1 r2 r1 r2 r1 r2 1.4 (v) 1 k 1.5 (v) 3k 200 1.8 (v) 6.49 k 12k 2.5 (v) 0.47 k 11.8k 3.0 (v) 4.64k 44.2k 88.4k 17k 3.3 (v) 27k 15k 3.6 (v) 60.4k 42k 21.5k 3.9 (v) 28k 58k 30.1k 4.5 (v) 11.3k 180k 56.3k 26k 17k 10.5 k 4.9 (v) 7.15k 850k 78.7k 36k 24k 15.8 k 5.0 (v) 6.34k 86k 39k 26k 17.4 k 5.1 (v) 5.9k 231k 97k 42k 28k 18.7 k 5.5 (v) 3.9k 56.2k 154k 56k 36k 24.9 k 6.5 (v) 14k 112k 63k 42.2 k 8.0 (v) 2.32k 22.6k 400k 125k 78.7 k 9.0 (v) 9.53k 200k 113 k 10 (v) 3.92k 54.9k 3 45k 160 k 11 (v) 825 16.5k 740k 232 k 12 (v) 3.6k 340 k 12.6 (v) 0 180k 464 k 13.5 (v) 57.6 k 787 k 15.5 (v) 300 k switching regulator +vo +vin r1 adj r2 -vo on/off -vin
M78SA switching regulator 0.5a , s md package e - mail:sales@minmax.com.tw tel:886 - 6 - 292 3150 201 5 / 07 / 3 1 rev: 7 page 5 of 6 ? package specifications mechanica l dimensions connecting pin patterns ? all dimensions in mm (inches) ? tolerance: x.x 0. 5 (x.xx0.0 2 ) x.xx 0. 25 ( x.xxx0.0 1 ) ? pins 0.05(0.002) pin connections physical characterist ics p in function case size : 15.3x9.6x8.8mm (0.60x0.38x0.35 inches) 1 +vin 2 +vin case material : non - conductive black plastic ( flammability to ul 94v - 0 rated ) 3 gnd 4 +vout pin material : phosphor bronze 5 +vout 6 v adj. weight : 1.7 g 7 gnd 8 gnd 9 gnd 10 remote on/off 0.1 s s seating plane 0 ~ 4 8 . 8 [ 0 . 3 5 ] 9 . 2 4 [ 0 . 3 6 ] top view 1 2 3 4 5 10 9 8 7 6 15.3 [0.60] 2.54x4 [0.10x4] 9 . 6 [ 0 . 3 8 ] 1 2 . 3 5 [ 0 . 4 9 ] 2.57 [0.10] 0 . 4 4 [ 0 . 0 2 ] 1.30 [0.05] 0.55 [0.02] 9 . 6 [ 0 . 3 8 ] 1 3 . 8 [ 0 . 5 4 ] 1 1 . 7 [ 0 . 4 6 ] 10 . 16 [ 0 . 40 ] 2 . 54 [ 0 . 10 ] 1 . 2 [ 0 . 05 ] 2 . 1 [ 0 . 0 8 ]
M78SA switching regulator 0.5a , s md package 18, sin sin road, an - ping industrial dis trict, tainan 702, taiwan tel: 886 - 6 - 2923150 fax: 886 - 6 - 2923149 e - mail: sales@minmax.com.tw 201 5 / 07 / 3 1 rev: 7 page 6 of 6 ? minmax technology co., ltd. test setup peak - to - peak output noise measurement test use a cout 0.47 f ceramic capacitor. scope measurement should be made by using a bnc socket, measurement bandwidth is 0 - 20 mhz. position the load between 50 mm and 75 mm from the dc/dc converter. technical notes output ripple reduction a good quality low esr capacitor placed as close as practicable across the load will give the best ripple and noise performance. to reduce output rippl e, it is recommended to use 3.3 f capacitors at the output . maximum capacitive load the m 78 s a series has limitation of maximum connected capacitance on the output. the power module may opera te in current limiting mode during start - up, affecting the ramp - up and the startup time. the maximum capacitance can be found in the data sheet. + o u t g n d + v i n s w i t c h i n g r e g u l a t o r r e s i s t i v e l o a d s c o p e c o p p e r s t r i p c o u t c o p p e r s t r i p d c p o w e r s o u r c e + - + v i n + o u t g n d l o a d d c p o w e r s o u r c e + - c o u t s w i t c h i n g r e g u l a t o r
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