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r1152n series high input voltage tolerant boost voltage regulator no.ea-108-100402 1 outline the r1152n series are cmos-based positive voltage regulator controller ics with high output voltage accuracy, low supply current. the high output current regulator can be composed with th is ic, an external power transistor, and capacitors. each of these voltage regulator controllers consists of a voltage reference unit, an error amplifier, comparators, resistors for output voltage setting, a peak current limit protection circuit, a short current limit circuit, and a chip enable circuit. the output voltage of these ics is internally fixed. in addition to low supply current by the merit of cmos process, the chip enable function prolongs the battery life. maximum operating input voltage is up to 18v, thus t hese ics are very suitable for the power supply for hand-held equipment and other power management applications using various ac adapters. since the package for these ics is sot-23-5 package, hi gh density mounting of the ics on boards is possible. features ? supply curre nt ..........................................typ.10 a ? standby mode ...........................................typ.0.1 a ? dropout voltag e ....................................... typ.0.1v(i out = 300ma,v out = 5.0v,depends on external transistor) ? output voltage accuracy.......................... 2.0% ? output voltage ......................................... in ternally fixed output voltage : 2.5v to 12.0v (0.1v steps) externally adjustable output voltage : the reference voltage is 2.5v (with external divider resistor s can be set more than12.1v) ( for other voltages, please refer to mark informations.) ? operating input voltage ........................... max.18v ? package ................................................... sot-23-5 ? built-in chip enable circuit (?h? active) ? built-in current limit circuit ? built-in output short current limit circuit applications ? power source for home appliances such as refrigerators, rice cookers, etc. ? power source for car audio equipment, car navigation system, and etc system. ? power source for notebook pcs, digita l tvs, cordless phones, and lan system. ? power source for copiers, printers, facsimiles, and scanners.
r1152n 2 block diagrams v in ce ext v out gnd current limit 1 3 2 5 4 vref selection guide the output voltage for the ics can be selected at the user?s request. product name package quantity per reel pb free halogen free r1152nxxxb ? -tr-fe sot-23-5 3,000 pcs yes yes xxx : the output voltage can be designa ted in the range from 2.5v(025) to 12.0v(120) in 0.1v steps. (for other voltages, please refer to mark informations.)
r1152n 3 pin configuration pin descriptions pin no symbol pin description 1 ce chip enable pin 2 gnd ground pin 3 v in input pin 4 v dd external transistor drive pin 5 v out voltage regulator output pin absolute maximum ratings symbol item rating unit v in input voltage 20 v v surge surge input voltage* 2 26 v v ce input voltage (ce pin) ? 0.3 to v in + 0.3 20 v v out output voltage (v out pin) ? 0.3 to v in + 0.3 20 v v ext output voltage (ext pin) ? 0.3 to v in + 0.3 20 v i ext ext output current 25 ma p d power dissipation (sot-23-5* 1 ) 420 mw topt operating temperature range ? 40 to + 105 c tstg storage temperature range ? 55 to + 125 c *1) for power dissipation, please refer to package information. *2) duration=200ms absolute maximum ratings electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safe ty for both device and sy stem using the device in the field. the functional operation at or over these absolute maximum ratings is not assured. ? sot-23-5 1 4 5 23 (mark side)
r1152n 4 electrical characteristics ? r1152nxxxb topt = 25 c symbol item conditions min. typ. max. unit v out output voltage v in = set v out + 1v i out = 100ma 0.980 1.020 v i out output current refer to the specification table note1 1 a v out / i out load regulation v in = set v out + 1v 1ma < = < = = 300ma refer to the specification table by output voltage i ss supply current v in = set v out + 1v, i out = 0ma 10 24 a istandby supply current (standby) v in = 18v,ce = 0v 0.1 1.0 a i extleak ext leakage current 0.1 a v out / v in line regulation set v out + 0.5v < = < = = 100ma 0.01 0.10 %/v v in input voltage 18 v i sc current limit refer to the specification table base current i b of pnp tr. 10 25 ma ilim short current limit base current i b of pnp tr. v out = 0v 600 a v out / topt output voltage temperature coefficient i out = 100ma ? 40 c < = < = c 50 ppm / c v ceh ce input voltage "h" 2.0 v in a v cel ce input voltage "l" 0 0.3 v note1: this item depends on the capab ility of external pnp transistor. use low saturation type transistor with h fe value range of 100 to 300. recommended operating conditions (electrical characteristics) all of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. the semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. and the semiconductor de vices may receive serious damage when they continue to operate over the recommended operating conditions.
r1152n 5 ? load regulation table (t opt = 25c) load regulation (mv) output voltage v out (v) typ. max. 2.5 v out 5.0 4 10 5.1 v out 12.0 4 18 ? dropout voltage table (t opt = 25c) dropout voltage (mv) output voltage v out (v) typ. max. 2.5 v out 4.9 150 290 5.0 v out 12.0 100 180 ? this specification depends on an external tran sistor. ("2sb1642" is the reference item.) ? output current limit condition table (t opt = 25c) output voltage v out (v) condition 2.5v v out 3.9 v in = ce = ext = 5.0v 4.0 v out 12.0 v in = ce = ext = v out + 1.0v ? output current condition table (t opt = 25c) output voltage v out (v) condition 2.5v v out 3.9 v in = ce = 5.0v 4.0 v out 12.0 v in = ce = v out + 1.0v
r1152n 6 operation in these ics, fluctuation of output voltage, v out is detected by the feed-back registers, and the result is compared with a reference voltage with the error amplif ier and control the base current of an external pnp transistor so that a constant voltage is output. the base current is monitored with t he base current limit circuit. if the base current may be too large, the protection circuit works. technical notes when using these ics, consider the following points: make v dd and gnd lines sufficient. when their impedance is high, noise pickup or unstable operation may result. when you choose an external transistor, select wi th considering output current, input voltage, and power dissipation. generally, low v ce (sat) and h fe range from 100 to 300 are the appropriate characteristics. in these ics, phase compensation is made for securing st able operation even if the load current is varied. for this purpose, be sure to use a 10 f or more output capacitor, as close as possible to the ics. if you choose an electrolytic capacitor, esr shift by temperature should be small. if you choose a ceramic capacitor, add an appropriate series resister. if the set output voltage is less than 4.0v, and i out >1a must be obtained, at least v in R 5.0v is the appropriate condition. (supposed as h fe = 100) voltage level for ce should not be floating, or middle range voltage. if the ce voltage is not appropriate, output voltage may be unstable or conduction current may flow. all external components should be located as close as possible to the ic, and wiring should be as short as possible. if h fe value of the pnp transistor is too high, output voltage may rise at low load current (less than 1ma).
r1152n 7 test circuits v in ce gnd ext v out v in out c in c out pnp tr v in ce gnd ext v out v in v out i ss c in = 0.1 f, c out = 10 f fig.1 standard test circuit fig.2 supply current test circuit typical applications v in ce gnd ext v out c in out c out pnp tr in v in ce gnd ext v out c out pnp tr out c in in c in = 0.1 f, c out = 10 f c in = 0.1 f, c out = 10 f fixed type output adjustable output
r1152n 8 typical characteristics 1) output voltage vs. output current (topt = 25 c) a. external tr.: 2sb1642 r1152n025b r1152n033b 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 500 1000 1500 2000 output current i out (ma) v in =5.0v v in =3.5v v in =3.0v output voltage v out (v) 0.0 1.0 2.0 3.0 4.0 0 2000 output current i out (ma) v in =5.0v v in =4.3v v in =3.8v 500 1000 1500 output voltage v out (v) r1152n050b r1152n120b 0.0 1.0 2.0 3.0 4.0 5.0 6.0 500 1000 1500 2000 output current i out (ma) v in =6.0v v in =5.5v v in =7.0v output voltage v out (v) 0 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 0 500 1000 1500 2000 output current i out (ma) output voltage v out (v) v in =12.5v v in =13.0v v in =14.0v b. external tr.:2sa1645 r1152n025b r1152n033b 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 1000 2000 3000 4000 5000 output current i out (ma) output voltage v out (v) v in =5.0v v in =3.5v v in =3.0v 0.0 1.0 2.0 4.0 3.0 0 1000 2000 3000 4000 5000 output current i out (ma) output voltage v out (v) v in =5.0v v in =4.3v v in =3.8v
r1152n 9 r1152n050b 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 1000 2000 3000 4000 6000 5000 output current i out (ma) output voltage v out (v) v in =6.0v v in =5.5v v in =7.0v c. output voltage vs. base current (topt = 25c) r1152n025b r1152n033b 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 5 10 15 20 30 25 base current i ext (ma) output voltage v out (v) v in =5.0v 0.0 1.0 2.0 4.0 3.0 0102030 v in =5.0v base current i ext (ma) output voltage v out (v) r1152n050b r1152n012b 0.0 1.0 2.0 6.0 5.0 4.0 3.0 010 52025 15 30 v in =6.0v base current i ext (ma) output voltage v out (v) 0.0 2.0 4.0 14.0 12.0 10.0 8.0 6.0 010 52025 15 30 v in =13.0v base current i ext (ma) output voltage v out (v)
r1152n 10 2) output voltage vs. input voltage (topt = 25c) external transistor: 2sb1642 r1152n025b r1152n033b 1.7 1.9 2.1 2.7 2.5 2.3 13 257 6 48 input voltage v in (v) output voltage v out (v) i out =1a i out =500ma i out =100ma i out =0ma 2.1 2.4 2.7 3.6 3.3 3.0 23 5 7 6 48 input voltage v in (v) output voltage v out (v) i out =1a i out =500ma i out =100ma i out =0ma r1152n050b 4.2 4.4 4.6 5.2 5.0 4.8 45 7 68 input voltage v in (v) output voltage v out (v) i out =1a i out =500ma i out =100ma i out =0ma 3) output voltage vs. temperature r1152n025b r1152n033b 2.450 2.475 2.500 2.550 2.525 -40 -15 35 85 60 10 110 temperature topt ( c) output voltage v out (v) i out =100ma v in =3.5v 3.234 3.267 3.300 3.366 3.333 -40 -15 35 85 60 10 110 temperature topt ( c) output voltage v out (v) i out =100ma v in =4.3v
r1152n 11 r1152n050b r1152n120b 4.900 4.950 5.000 5.100 5.050 -40 -15 35 85 60 10 110 temperature topt ( c) output voltage v out (v) i out =100ma v in =6.0v 11.760 11.880 12.000 12.240 12.120 -40 -15 35 85 60 10 110 temperature topt ( c) output voltage v out (v) i out =100ma v in =13.0v 4) supply current vs. input voltage (topt = 25c) r1152n033b r1152n050b 0 5 20 15 10 08 41620 12 24 input voltage v in (v) supply current i ss ( a) 0 5 20 15 10 08 41620 12 24 input voltage v in (v) supply current i ss ( a) r1152n120b 0 5 20 15 10 08 41620 12 24 input voltage v in (v) supply current i ss ( a)
r1152n 12 5) supply current vs. temperature r1152n025b r1152n033b 0 5 20 15 10 -40 10 -15 60 85 35 110 temperature topt ( c) supply current i ss ( a) v in =v out =3.5v 0 5 20 15 10 -40 10 -15 60 85 35 110 temperature topt ( c) supply current i ss ( a) v in =v out =4.3v r1152n050b r1152n120b 0 5 20 15 10 -40 10 -15 60 85 35 110 temperature topt ( c) supply current i ss ( a) v in =v out =6.0v 0 5 20 15 10 -40 10 -15 60 85 35 110 temperature topt ( c) supply current i ss ( a) v in =v out =13.0v 6) ripple rejection vs. ripple frequency (topt = 25c) r1152n025b r1152n033b 0 20 40 100 80 60 0.01 1 0.1 10 100 frequency f(khz) ripple rejection rr(db) v in =3.5v+0.5vp-p i out =100ma,c out =10 f 2sb1642 2sa1645 0 20 40 100 80 60 0.01 1 0.1 10 100 frequency f(khz) ripple rejection rr(db) v in =4.3v+0.5vp-p i out =100ma,c out =10 f 2sb1642 2sa1645
r1152n 13 r1152n050b r1152n120b 0 20 40 100 80 60 0.01 1 0.1 10 100 frequency f(khz) ripple rejection rr(db) v in =6.0v+0.5vp-p i out =100ma,c out =10 f 2sb1642 2sa1645 0 20 40 100 80 60 0.01 1 0.1 10 100 frequency f(khz) ripple rejection rr(db) v in =13.0v+0.5vp-p i out =100ma,c out =10 f 2sa1645 2sb1642 7) input transient response (topt = 25c) a. external tr.: 2sb1642 r1152n025b r1152n033b 2.3 2.4 2.9 2.7 2.6 2.8 2.5 -0.5 0.5 5.5 3.5 2.5 4.5 1.5 0 100 50 200 250 150 300 time ( s) output voltagev out (v) input voltage v in (v) input voltage output voltage i out =100ma v out =10 f 3.1 3.2 3.7 3.5 3.4 3.6 3.3 0.3 1.3 6.3 4.3 3.3 5.3 2.3 0 100 50 200 250 150 300 time ( s) output voltagev out (v) input voltage v in (v) input voltage output voltage i out =100ma v out =10 f r1152n050b r1152n120b 4.8 4.9 5.4 5.2 5.1 5.3 5.0 2.0 3.0 8.0 6.0 5.0 7.0 4.0 0 100 50 200 250 150 300 time ( s) output voltagev out (v) input voltage v in (v) input voltage output voltage i out =100ma v out =10 f 0 100 50 200 250 150 300 time ( s) input voltage output voltage i out =100ma v out =10 f 11.8 11.9 12.4 12.2 12.1 12.3 12.0 output voltagev out (v) 9.0 10.0 15.0 13.0 12.0 14.0 11.0 input voltage v in (v)
r1152n 14 b. external tr.: 2sa1645 r1152n025b r1152n033b 2.3 2.4 2.9 2.7 2.6 2.8 2.5 -0.5 0.5 5.5 3.5 2.5 4.5 1.5 0 100 50 200 250 150 300 time ( s) output voltage v out (v) input voltage v in (v) input voltage output voltage i out =100ma v out =10 f 3.1 3.2 3.7 3.5 3.4 3.6 3.3 0.3 1.3 6.3 4.3 3.3 5.3 2.3 0 100 50 200 250 150 300 time ( s) output voltage v out (v) input voltage v in (v) input voltage output voltage i out =100ma v out =10 f r1152n050b r1152n120b 4.8 4.9 5.4 5.2 5.1 5.3 5.0 2.0 3.0 8.0 6.0 5.0 7.0 4.0 0 100 50 200 250 150 300 time ( s) output voltage v out (v) input voltage v in (v) input voltage output voltage i out =100ma v out =10 f 0 100 50 200 250 150 300 time ( s) input voltage output voltage i out =100ma v out =10 f 11.8 11.9 12.4 12.2 12.1 12.3 12.0 9.0 10.0 15.0 13.0 12.0 14.0 11.0 output voltage v out (v) input voltage v in (v) 8) load transient response (topt = 25c) a: external tr.: 2sb1642 r1152n025b r1152n033b 2.40 2.50 2.45 2.75 2.65 2.60 2.70 2.55 0 120 100 60 40 80 20 0 400 200 800 600 1000 time ( s) output voltage v out (v) output current i out (ma) output current output voltage c in =0.1 f c out =10 f 3.20 3.30 3.25 3.55 3.45 3.40 3.50 3.35 0 120 100 60 40 80 20 0 400 200 800 600 1000 time ( s) output voltage v out (v) output current i out (ma) output current output voltage c in =0.1 f c out =10 f
r1152n 15 r1152n050b r1152n120b 4.90 5.00 4.95 5.25 5.15 5.10 5.20 5.05 0 120 100 60 40 80 20 0 400 200 800 600 1000 time ( s) output voltage v out (v) output current i out (ma) output current output voltage c in =0.1 f c out =10 f 11.90 12.00 11.95 12.25 12.15 12.10 12.20 12.05 0 120 100 60 40 80 20 0 400 200 800 600 1000 time ( s) output voltage v out (v) output current i out (ma) output current output voltage c in =0.1 f c out =10 f b. external tr.: 2sa1645 r1152n025b r1152n033b 2.40 2.50 2.45 2.75 2.65 2.60 2.70 2.55 0 120 100 60 40 80 20 0 400 200 800 600 1000 time ( s) output voltage v out (v) output current i out (ma) output current output voltage c in =0.1 f c out =10 f 3.20 3.30 3.25 3.55 3.45 3.40 3.50 3.35 0 120 100 60 40 80 20 0 400 200 800 600 1000 time ( s) output voltage v out (v) output current i out (ma) output current output voltage c in =0.1 f c out =10 f r1152n050b r1152n120b 4.90 5.00 4.95 5.25 5.15 5.10 5.20 5.05 0 120 100 60 40 80 20 0 400 200 800 600 1000 time ( s) output voltage v out (v) output current i out (ma) output current output voltage c in =0.1 f c out =10 f 11.90 12.00 11.95 12.25 12.15 12.10 12.20 12.05 0 120 100 60 40 80 20 0 400 200 800 600 1000 time ( s) output voltage v out (v) output current i out (ma) output current output voltage c in =0.1 f c out =10 f
r1152n 16 appendix ? technical notes on output voltage setting ext v out gnd i 2 i 3 r 2 r 3 2.5v v out2 out pnp tr i ic r ic the output voltage of regulator with r1152n025x may be adjustable for any output voltage between its 2.5v reference and v dd setting level. an external pair of resi stors is required, as shown above figure. the complete equation for the output voltage is described step by step as follows; i 2 = i ic + i 3 ............................................................................................................................... ........(1) i 3 = 2.5/r 3 .............................................................................................................................. .....(2) thus, i 2 = i ic + 2.5/r 3 ..............................................................................................................................( 3) therefore, v out = 2.5 + r 2 i 2 .........................................................................................................................(4) put equation (3) into equation (4), then v out = 2.5 + r 2 (i ic + 2.5/r 3 ) = 2.5 (1 + r 2 /r 3 ) + r 2 i ic .....................................................................................................(5 ) in 2nd term, or r2 i ic will produce an error in v out . in equation(5), i ic = 2.5/r ic ............................................................................................................................... ...(6) r 2 i ic = r 2 2.5/r ic = 2.5 r 2 /r ic .................................................................................................................. (7) for better accuracy, choosing r 2 (< r1152n 17 ? adjustable resister vs. output voltage (topt = 25c) r1125n025b r1125n025b 0 6 30 24 18 12 020 6080 40 100 resistance r2(k ) output voltage v out (v) r 3 =10k topt=25 c 0 6 30 24 18 12 0 200 600 800 400 1000 r 3 =100k topt=25 c resistance r2(k ) output voltage v out (v) for stable operation phase compensation in these ics, phase compensation is externally made fo r securing stable operation even if the load current is varied. for this purpose, be sure to use a capacitor fo r the output pin with good fr equency characteristics and esr (equivalent series resistance) of which is in the range described as follows: v in ce gnd ext v out c out out pnp tr c in ceramic capacitor 0.1 f spectrum analyze in ceramic capacitor 10 measuring circuit for white noise; r1152nxxxb the relations between i out (output current) and esr of output ca pacitor are shown below. the conditions when the white noise level is under 40 v (avg.) are marked as the hatched area in the graph. (1)v in = v out + 1v (2)frequency band: 10hz to 1mhz (3)temperature: 25c (4)c out : ceramic 10 f; esr = 0.075 (10khz)
r1152n 18 a) tr.: 2sb1642 r1152n025b r1152n120bx 0.01 1 0.1 10 1000 100 0 200 600 800 400 1000 output current i out (ma) esr( ) 0.01 1 0.1 10 1000 100 0 200 600 800 400 1000 output current i out (ma) esr( ) b) tr.: 2sa1645 r1152n025b r1152n120b 0.01 1 0.1 10 1000 100 0 200 600 800 400 1000 output current i out (ma) esr( ) 0.01 1 0.1 10 1000 100 0 200 600 800 400 1000 output current i out (ma) esr( )
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