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703 xc6365 6366 etr0501_001.doc input voltage range : 2.2~10.0v output voltage range : 1.5~6.0v (2.5%) oscillator frequency : 300khz (15%) maximum duty ratio : 100% high efficiency : 92% pwm/pfm switching control (xc6366) sot-25 package general description the xc6365/66 series are mu lti-functional step-down dc/dc converters with built-in high speed, low on resistance drivers. a n output current of more than 1a is possible using an externally connected transistor, coil, diode and capacitor. output voltage is programmabl e in 100mv increments between 1.5v to 6.0v (v out ) (2.5% accuracy). further, with 1.0v o f standard voltage supply internal and using externally connected components, output voltage can be set up freely (fb). with a 300khz switching frequency, the size of the external components can be reduced. control switches from pwm to pfm during light loads with the xc6366 (pwm/pfm switchable) and the series is highly efficient from light loads to large output currents. in relation to soft-start time , both internally set-up 10msec types (a, b) and external resistor or capacitor regulated types (c, d) are available. during stand-by time (ce pin "low" ), current consumption is reduced to less than 0.5 a. with u.v.l.o. internal, the ex ternal transistor will be forcibl y switched off if used below the stipulated voltage. a pplications electronic information organizers palmtops cellular and portable phones portable audio systems various multi-function power supplies typical application circuit features input voltage range : 2.2v ~ 10v (v out type) output voltage range : 1.5v ~ 6.0v programmable in 100mv increments (2.5%) oscillation frequency : 300khz (15%) : custom products for 180, 500khz output current : more than 1.0a (v in =5.0v, v out =3.0v) high efficiency : 92% (typ.) stand-by capability : istb=0.5 a (max.) soft-start time set-up externally type possible internally set-up output voltage type possible (v out ) externally set-up output voltage type possible (fb) package : sot-25 typical performance characteristics go-compatible
704 xc6365/6366 series pin number pin name function 1 ext/ external transistor connection 2 v dd power supply 3 gnd ground 4 ce chip enable soft-start capacitor connection with soft-start externa lly set-up types (c, d) 5 v out (fb) output voltage monitor fb with externally set-up types (b, d) pin configuration pin assignment product classification selection guide
705 xc6365/6366 series designator description symbol description a : v out type: internally set-up, soft-start internally set-up b : fb type: externally set-up, soft-start internally set-up c : v out type: internally set-up, soft-start externally set-up type of dc/dc converter d : fb type: externally set-up, soft-start internally set-up 15 60 : v out type: 3.0v output =3, =0 output voltage 10 : fb type: 10 fixed =1, =0 fixed 3 : 300khz 5 : 500khz (custom) oscillation frequency 2 : 180khz (custom) package m : sot-25 (sot-23-5) r : embossed tape, standard feed device orientation l : embossed tape, reverse feed packaging information sot-25 ordering information product classification (continued) xc6365 ????? pwm control xc6366 ????? pwm/pfm switching control
706 xc6365/6366 series mark product series mark product series a xc6365a k xc6366a b xc6365b l xc6366b c xc6365c m xc6366c d xc6365d n xc6366d oscillation frequency (khz) output voltage 100 180 300 500 1.x b 1 1 b 2.x c 2 2 c 3.x d 3 3 d 4.x e 4 4 e 5.x f 5 5 f 6.x h 6 6 h oscillation frequency (khz) output voltage 100 180 300 500 x.0 0 0 a a x.1 1 1 b b x.2 2 2 c c x.3 3 3 d d x.4 4 4 e e x.5 5 5 f f x.6 6 6 h h x.7 7 7 k k x.8 8 8 l l x.9 9 9 m m marking rule represents product classification represents integer of output voltage and oscillation frequency represents decimal number of output voltage and oscillation frequency represents production lot number 0 to 9, a to z repeated (g, i, j, o, q, w excepted) 123 54 sot-25 (top view)
707 xc6365/6366 series block diagrams xc6365, xc6366 series a, c type (v out ) xc6365, xc6366 series b, d type (fb)
708 xc6365/6366 series parameter symbol ratings units v in pin voltage v dd -0.3 ~ +12 v v out pin voltage v out -0.3 ~ v in +0.3 v fb pin voltage v fb -0.3 ~ v in +0.3 v ce pin voltage v ce -0.3 ~ v in +0.3 v ext/ pin voltage v ext/ -0.3 ~ v in +0.3 v ext/ pin current iext/ 100 ma power dissipation pd 150 mw operating temperature range topr -30 ~ +80 storage temperature range tstg -40 ~ +125 parameter symbol conditions min. typ. max. units output voltage v out 3.218 3.300 3.383 v maximum input voltage v in 10.0 - - v u.v.l.o. voltage (minimum operating voltage) v uvlo same as i dd1 , voltage which ext/pin voltage holding ?h? level 0.9 - 2.2 v supply current 1 i dd1 no external components, ce=v dd , v out =0v - 57 102 a xc6365 - 57 102 a supply current 2 i dd2 no external components, ce=v out =v dd xc6366 - 15 27 a stand-by current istb no external components, ce=v out =0v - - 0.5 a oscillation frequency fosc measuring of ext/ waveform, v in =output voltage + 0.1v 255 300 345 khz maximum duty ratio maxdty 100 - - % pfm duty ratio pfmdty no load (xc6366 only) 15 25 35 % ce "high" voltage v ceh no external components, v out =0v, voltage which ext/pin voltage holding ?l? level 0.65 - - v ce "low" voltage v cel no external components, v out =0v, voltage which ext/pin voltage holding ?h? level - - 0.20 v ext "high" on resistance r extbh same as i dd2 , v ext/= v dd -0.4v - 16 22 a ext "low" on resistance r extbl same as i dd1 , v ext/= 0.4v - 14 19 a efficiency effi use of a xp162a12a6 transistor recommended - 92 - % soft-start time t ss connect r ss , c ss , ce, 0v 3.0v (when v in Q 3.0v, v in =3.0v) 5 10 20 msec a bsolute maximum ratings ta = 2 5 electrical characteristics xc6365a333mr, xc6366a333mr conditions: 1. unless otherwise stated, connect external components. v in =v dd = 5.0v, i out = 220ma 2. xc6365/66c series external components: c ss =0.033 f, r ss =470k (v out =3.3v, fosc=300khz) ta = 2 5 note: voltage is all ground standardized.
709 xc6365/6366 series parameter symbol conditions min. typ. max. units output voltage v out 4.875 5.000 5.125 v maximum input voltage v in 10.0 - - v u.v.l.o. voltage (minimum operating voltage) v uvlo same as i dd1 , voltage which ext/pin voltage holding ?h? level 0.9 - 2.2 v supply current 1 i dd1 no external components, ce=v dd , v out =0v - 67 122 a xc6365 - 67 122 a supply current 2 i dd2 no external components, ce=v out =v dd xc6366 - 16 29 a stand-by current istb no external components, ce=v out =0v - - 0.5 a oscillation frequency fosc measuring of ext/ waveform, v in =output voltage + 0.1v 255 300 345 khz maximum duty ratio maxdty 100 - - % pfm duty ratio pfmdty no load (xc6366 only) 15 25 35 % ce "high" voltage v ceh no external components, v out =0v, voltage which ext/pin voltage holding ?l? level 0.65 - - v ce "low" voltage v cel no external components, v out =0v, voltage which ext/pin voltage holding ?h? level - - 0.20 v ext "high" on resistance r extbh same as i dd2 , v ext/= v in -0.4v - 12 17 a ext "low" on resistance r extbl same as i dd1 , v ext/= 0.4v - 10 14 a efficiency effi use of a xp162a12a6 transistor recommended - 93 - % soft-start time t ss connect r ss , c ss , ce, 0v 3.0v (when v in Q 3.0v, v in =3.0v) 5 10 20 msec xc6365a503mr, xc6366a503mr conditions: 1. unless otherwise stated, connect external components. v in =v dd = 7.5v, i out = 330ma 2. xc6365/66c series external components: c ss =0.033 f, r ss =470k (v out =5.0v, fosc=300khz) ta = 2 5 electrical characteristics (continued)
710 xc6365/6366 series parameter symbol conditions min. typ. max. units output voltage v out 2.975 3.000 3.075 v maximum input voltage v in 10.0 - - v u.v.l.o. voltage (minimum operating voltage) v uvlo same as i dd1 , voltage which ext/pin voltage holding ?h? level 0.9 - 2.2 v supply current 1 i dd1 no external components, ce=v in , v out =0v - 55 100 a xc6365 - 55 100 a supply current 2 i dd2 no external components, ce=v dd , fb=1.2v xc6366 - 15 27 a stand-by current istb no external components, ce=fb=0v - - 0.5 a oscillation frequency fosc measuring of ext/ waveform, v in =output voltage + 0.1v 255 300 345 khz maximum duty ratio maxdty 100 - - % pfm duty ratio pfmdty no load (xc6366 only) 15 25 35 % ce "high" voltage v ceh no external components, fb=0v, voltage which ext/pin voltage holding ?l? level 0.65 - - v ce "low" voltage v cel no external components, v out =0v, voltage which ext/pin voltage holding ?h? level - - 0.20 v ext "high" on resistance r extbh same as i dd2 , v ext/= v in -0.4v - 17 24 a ext "low" on resistance r extbl same as i dd1 , v ext/= 0.4v - 15 20 a efficiency effi use of a xp162a12a6 transistor recommended - 92 - % soft-start time t ss connect r ss , c ss , ce, 0v 3.0v (when v in Q 3.0v, v in =3.0v) 5 10 20 msec xc6365a103mr, xc6366a103mr conditions: 1. unless otherwise stated, connect external components. v in =v dd = 4.5v, i out = 200ma 2. xc6365/66c series external components: c ss =0.033 f, r ss =470k 3. r fb1 = 400k , r fb2 = 200k , cfb = 100ppf (v out =3.0v, fosc=300khz) ta=25 electrical characteristics (continued)
711 xc6365/6366 series test circuits circuit 1. xc6365a, xc6366a circuit 2. xc6365b, xc6366b circuit 3. xc6365c , xc6366c
712 xc6365/6366 series circuit 4. xc6365d, xc6366d circuit 6. xc6365b, xc6366b (when used with a pnp transistor) circuit 5. xc6365a , xc6366a ( when used with a pnp transistor ) test circuits (continued)
713 xc6365/6366 series circuit 7. xc6365c, xc6366c (when used with a pnp transistor) circuit 8. xc6365d , xc6366d ( when used with a pnp transistor ) test circuits (continued) recommended components c, d type (soft-start externally set-up) tr : xp162a12a6pr (torex p-channel power mosfet) c ss : 0.033 f (ceramic capacitor) please use a pnp transistor where v in < 2.5v r ss : 470k ? (c type), 330k ? (d type) l : 22 h (cr54, sumida, fosc=300khz) 47 h (cr75, sumida, fosc=180khz) b, d type (fb type) 10 h (cr54, sumida, fosc=500khz) r fb : set up so that r fb1 / r fb2 = v out ? 1 sd : ma2q735 (schottky diode, matsushita) (v out = setting output voltage), c l :10v, 47 f (tantalum capacitor, nichicheml mce) r fb1 = r fb2 Q 2m c in :16v 10 f (tantalum capacitor, nichichemi mce) c fb : set up so that fzfb = 1 (2 x c fb x r fb1 ) is within the 0.5 to 20khz range (10khz conventional) pnp tr. type adjustments necessary in respect of l, c l . tr : 2sa1213 (toshiba) e.g. : v out = 3.0v r b : 500 (adjust according to load and tr. hfe levels) r fb1 = 400k ? , r fb2 = 200k ? , c fb = 100pf c b : 2200pf (ceramic type) set up so that c b Q 1 / (2 x r b x fosc x 0.7)
714 xc6365/6366 series notes on use 1. take ample care to ensure that none of the ic's, nor t he external component's, absolute maximum ratings are exceeded. 2. be extremely careful when selecting parts and do not limit your reference to the specificati ons and characteristics for the dc/dc converter alone. the ic also depends, to a great extent, upon the external components. 3. arrange the peripherals in the environs of the ic. in order to reduce wiring impedance, use short, thick wires. in particula r, wire the load capacitor as close as possible and strengthen the ground wiring sufficiently. 4. ground current during switching may cause the ic's operations to become unstable due to changes in ground voltage, so please strengthen the ic's gnd pin surroundings. external components 1. setting soft start time to set a longer soft start time, please use xc6365c or xc6365 d series which soft start function is externally set up. for the measurement of soft start time t ss , the time is needed to be between the maximum and the minimum value indicated in the chart below. please set a soft start capacitor c ss according to the application. 2. setting r fb1 and c fb fzfb=1 (2 c fb r fb1 ) a s the combination of r fb1 and c fb enable to set fzfb between 0.5khz to 20khz, within the realm of fzfb=0.5khz to fzfb=20khz as the chart below can be effective. under normal condition, please set the co mbination to configure around fzfb=10khz.
715 xc6365/6366 series typical performance characteristics
716 xc6365/6366 series typical performance characteristics (continued) (continued)
717 xc6365/6366 series typical performance characteristics (continued)
718 xc6365/6366 series typical performance characteristics (continued) (continued)
719 xc6365/6366 series typical performance characteristics (continued)
720 xc6365/6366 series typical performance characteristics (continued) (continued)
721 xc6365/6366 series typical performance characteristics (continued)
722 xc6365/6366 series typical performance characteristics (continued)
723 xc6365/6366 series typical performance characteristics (continued)

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