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1/35 xc9110/xc9111 series pfm controlled step-up dc/dc converter / controller ics general description the xc9110/9111 series is a group of pf m controlled step-up dc/dc converter/co ntroller ics designed to generate low supply voltage by the combination of pfm control and cmos structure. the series is ideal for applications where a longer battery life is needed such as in portable communication equipment. with a built-in 2.5 n-channel driver transistor, the xc9110a/c/e and xc9111a/c/e types provide a step-up operat ion by using only a coil, a capacitor, and a diode connected externally. the xc9110/9111b, d and f versions can be used with an exter nal transistor for applications requiring larger currents. output voltage is internally programmable in a range fr om 1.5v to 7.0v in increments of 100mv (accuracy: 2.5%). maximum oscillation frequency is set to 100khz for xc9110/9111 series. (at light loads, it is set to 180khz for the xc9111 series.) options include products equipped with a ce pin (c and d versions) that allows t he ic to be shut down thereby reducing supply current and with separated v dd /v out pins (e and f versions) to separate the power supply block and the output voltage detect block. with the xc9110 series, maximum duty cycle is set to 75% (v dd =3.3v) making it suitable for use with large current operations. the xc9111 series automatically switches duty ratio between 56% & 75% (v dd =3.3v) when it senses changes in load to drop output ripple voltage and can support both la rge and small currents. the external transistor types (b/d/f types) can be provided for applications, which require larger currents . applications mobile phones various palm top equipment cameras, vcrs various portable equipment features operating (input) voltage range : 0.9v ~ 10.0v output voltage range : 1.5v~7.0v (100mv increments, accuracy 2.5%) maximum oscillation frequency : 100khz (accuracy 15%) 180khz (for the xc9111 series, duty ratio: 56% at light loads) built-in switching n-ch transistor : a/c/e type on resistance 2.5 (v dd =3.0v) external transistor types : b/d/f type lx limit voltage : e type: more than v dd =2.0v : a/c type: more than v out =2.0v low supply current : 2.0 a (when operating, vout=3v) small package : sot-23 & sot89 (for xc9111 series), sot-25, usp-6c typical application circuit typical performance characteristics c type circuit 1 23 54 l cin cl (tantalum) (top view) sot-25 gnd vout ce sd vin + + 0 20 40 60 80 10 0 0 5 0 1 00 150 2 00 250 3 00 output current:iout(ma) efficiency:effi(%) vin=0.9v 1.2v 1.5v 2.4v 3.0v x c9111e331mr l=100 h(cr54), cl47 f(tantalum) sd: xb01sb04a2br etr0406 004
2/35 xc9110 / xc9111 series xc9111a/b pin number sot-23 sot-89 a b a b pin name functions 1 1 1 1 v ss : ground 3 3 2 2 v out : output voltage montior, internal power supply 2 - 3 - lx : switch - 2 - 3 ext : external switching transistor drive 5 - 5 - 4 - 4 - lx switch 1 1 - - 3 3 - - ce chip enable 2 2 1 1 1 1 3 3 v out output voltage monitor 3 3 3 3 2,5 2,5 2,5 2,5 nc no connection pin configuration sot-25 (top view) usp-6c (bottom view) *the dissipation pad for the usp-6c package should be solder-plated in recommended mount pattern and metal masking so as to enhance mounting strength and heat release. if the pad needs to be connected to other pins, it should be connected to the pin no.1. pin assignment ce/v out 123 54 vss v out/v dd lx/ext nc sot-23 (top view) sot-89 (top view)
3/35 xc9110/xc9111 series designator description symbol description a : v dd / v out common type (for xc9111series) built-in transistor b : v dd / v out common type (for xc9111series) external transistor c : ce pin (5 pin) built-in transistor d : ce pin (5 pin) external transistor e : v dd / v out separated type (5 pin) built-in transistor ce function f : v dd / v out separated type (5 pin) external transistor ? output voltage 15 ~ 70 : ex. 3.5v output = 3, = 5 maximum oscillation frequency 1 : 100khz : sot-23 (for a and b types) semi-custom m : sot-25 (for c, d, f types) p : sot-89 (for a and b types) semi-custom package e : usp-6c (for c, d, f types) r : embossed tape, standard feed device orientation l : embossed tape, reverse feed product classification selection guide ordering information xc9110 ????? : pfm control, 75% duty xc9111 ????? : pfm control, 56% / 75% duty variable
4/35 xc9110 / xc9111 series block diagrams xc9111 a and b series note: the xc9110 series, tr. built-in type, uses the lx pin and the xc9111 series, external tr. type, uses the ext pin. the duty ratio of the xc9111 series automatically varies between 56% (oscillation frequency 180khz) and 75% (oscillation frequency (fosc) 100khz). the v lx limit function only applies to the xc9110/9111 a types. * the duty ratio depends on power supply. please refer to the electrical characteristics on duty against output voltage you use. xc9110 / 9111 c and d series note: the xc9110 series, tr. built-in type, uses the lx pin and the xc9111 series, external tr. type, uses the ext pin. the xc9110 series' duty ratio is 75% and oscillation frequency (fosc) is 100khz. the duty ra tio of the xc9111 series automatically varies between 56% (oscillation frequency 180khz ) and 75% (oscillation frequency (fosc) 100khz). the v lx limit function only applies to the xc9110/9111 c versions. * the duty ratio depends on power supply. please refer to th e electrical characteristics on duty against output voltage you use.
5/35 xc9110/xc9111 series note: the xc9110 series, tr. built-in type, uses the lx pin and the xc9111 series, external tr. type, uses the ext pin. the xc9110 / 9111 series e and f series have the v dd pin. the xc9110 series' duty ratio is 75% and oscillation frequency (fosc) is 100khz. the duty ratio of the xc9111 series automatically varies between 56% (oscillation frequency 180khz) and 75% (o scillation frequency (fosc) 100khz). the v lx limit function only applies to the xc9110/9111 c versions. * the duty ratio depends on power supply. please refer to the electric al characteristics on duty agai nst output voltage you use. parameter symbol ratings units v out input voltage v out ? 0.3 ~ 12.0 v lx pin voltage v lx ? 0.3 ~ 12.0 v lx pin current i lx 400 ma ext pin voltage v ext v ss ? 0.3 ~ v out 0.3 v ext pin current i ext 100 ma ce input voltage v ce ? 0.3 ~ 12.0 v v dd input voltage v dd ? 0.3 ~ 12.0 v sot-23, 25 250 sot-89 500 power dissipation usp-6c pd 100 mw operating temperature range topr ? 40 ~ + 85 storage temperature range tstg ? 55 ~ +125 a bsolute maximum ratings ta = 2 5 * define as v ss with a standard of all the voltage. block diagrams xc9111 e and f series
6/35 xc9110 / xc9111 series parameter symbol conditions min. typ. max. unit circuit output voltage v out connected to external components 0.975 v out 1.025 v output voltage temperature characteristics v out v out ? topr connected to external components - 40 Q topr Q 85 - 100 - ppm/ maximum input voltage v in 10 - - v operating start voltage v st1 i out =1ma, connected to external components - 0.8 0.9 v oscillation start voltage v st2 applied 0.8v to v out , vpull=1.0v - - 0.8 v operating hold voltage v hld i out =1ma, connected to external components 0.7 - - v input current at no load i in i out =0ma (*1) - e1-1(*) e1-2(*) a supply current 1 (*2) i dd1 applied (output voltage 0.95) to v out - e2-1(*) e2-2(*) a supply current 2 i dd2 applied (output voltage+0.5) to v out - e3-1(*) e3-2(*) a lx switch on resistance rswon same as i dd1 , vlx=0.4v (*3) - e4-1(*) e4-2(*) lx leak current i lxl same as i dd2 , vlx 7v - - 1 a duty ratio dty same as i dd1 , measure lx waveform e7-1(*) e7-2(*) e7-3(*) % duty ratio 2 dty2 i out =1ma, measure lx on time. connect to external components 48 56 64 % maximum oscillation frequency maxfosc same as i dd1 85 100 115 khz maximum oscillation frequency 2 maxfosc2 same as i dd1 153 180 207 khz lx limit voltage (*4) v lxlmt same as i dd1 , vlx when max. oscillation frequency is more than double 0.7 - 1.1 v efficiency (*5) effi connect to external components - e8(*) - % electrical characteristics xc9111axx1mr test condition : unless otherwise specified, v in =v out 0.6, i out =, vpull=5.0v note: *1: torex sbd, xb01sb04a2br is used, reverse current ir < 1 a (when reverse voltage v r = 10v is applied), in case of using selected parts. *2: supply current 1 is the value when the ic is constantly swit ching. in actual operation, t he oscillator periodically switch es, resulting in lower power consumption. please refer to input current (i in ) under no load condition for the actual current, which is supplied from the input power supply (v in ). *3: lx switch on resistance can be calculated by (v lx x rp) / (vpull - v lx ). * change vpull so that v lx will become 0.4v. *4: the lx limit voltage function becomes stable when v out is over 2.0v. *5: effi={[output voltage] (output current)} / [(input voltage) (input current)] 100 *6: please be aware of the absolute maximu m ratings of the external components. (*): please refer to the charts. ta = 2 5
7/35 xc9110/xc9111 series parameter symbol conditions min. typ. max. unit circuit output voltage v out connected to external components 0.975 v out 1.025 v output voltage temperature characteristics v out v out ? topr connected to external components - 40 Q topr Q 85 - 100 - ppm/ maximum input voltage v in 10 - - v - operating start voltage v st1 i out =1ma, connected to external components - 0.8 0.9 v oscillation start voltage v st2 applied 0.8v to v out - - 0.8 v operation hold voltage v hld i out =1ma, connected to external components 0.7 - - v supply current 1 (*1) i dd1 applied (output voltage 0.95) to v out - e2-1(*) e2-2(*) a supply current 2 i dd2 applied (output voltage+0.5) to v out - e3-1(*) e3-2(*) a ext ?h? on resistance r exth same as i dd1 , v ext =v out -0.4v (*2) - e5-1(*) e5-2(*) ext ?l? on resistance r extl same as i dd1 , v ext =0.4v (*3) - e6-1(*) e6-2(*) duty ratio dty same as i dd1 , measure lx waveform e7-1(*) e7-2(*) e7-3(*) % duty ratio 2 dty2 i out =1ma, measure lx on time. connect to external components 48 56 64 % maximum oscillation frequency maxfosc same as i dd1 85 100 115 khz maximum oscillation frequency 2 maxfosc2 same as i dd1 153 180 207 khz efficiency (*4) effi connect to external components - e9(*) - % test condition : unless otherwise specified, v in =v out 0.6, i out = note: *1: supply current 1 is the value when the ic is constantly swit ching. in actual operation, the oscillator periodically switch es, resulting in lower power consumption. *2: ext ?h? on resistance can be calculated by (0.4 x rp) / ( v ext ? vpull). * change vpull so that v ext will become v out -0.4v. *3: ext ?l? on resistance can be calculated by (v ext x rp) / ( vpull- v ext ). * change vpull so that v ext will become 0.4v. *4: effi={[output voltage] (output current)} / [(input voltage) (input current)] 100 *5: please be aware of the absolute maximu m ratings of the external components. (*): please refer to the charts. ta = 2 5 xc9111bxx1mr electrical characteristics (continued)
8/35 xc9110 / xc9111 series parameter symbol conditions min. typ. max. unit circuit output voltage v out connect to external components 0.975 v out 1.025 v output voltage temperature characteristics v out v out ? topr connect to external components - 40 Q topr Q 85 - 100 - ppm/ maximum input voltage v in 10 - - v operation start voltage v st1 i out =1ma, connect to external components - 0.8 0.9 v oscillation start voltage v st2 applied 0.8v to v out , vpull=1.0v - - 0.8 v operation hold voltage v hld i out =1ma, connect to external components 0.7 - - v input current i in i out =0ma (*1) - e1-1(*) e1-2(*) a supply current 1 (*2) i dd1 applied (output voltage 0.95) to v out - e2-1(*) e2-2(*) a supply current 2 i dd2 applied (output voltage 0.5v) to v out - e3-1(*) e3-2(*) a lx switch on resistance r swon same as i dd1 , v lx =0.4v (*3) - e4-1(*) e4-2(*) lx leak current i lxl same as i dd2 , v lx =7v - - 1 a duty ratio dty same as i dd1 , measure lx waveform e7-1(*) e7-2(*) e7-3(*) % duty ratio 2 dty2 i out =1ma, measure lx on time (xc9111 only) connect to external components 48 56 64 % maximum oscillation frequency maxfosc same as i dd1 85 100 115 khz maximum oscillation frequency 2 maxfosc2 same as i dd1 (xc9111 only) 153 180 207 khz stand-by current istb same as i dd1 , v ce =0v - - 0.50 a ce ?high? voltage v ceh same as i dd1 , determine lx oscillation 0.75 - - v ce ?low? voltage v cel same as i dd1 , determine lx shut-down - - 0.20 v ce ?high? current i ceh same as i dd1 , v ce =v out 0.95 - - 0.25 a ce ?low? current i cel same as i dd1 , v ce =0v - - -0.25 a lx limit voltage (*4) v lxlmt same as i dd1 , when max. oscillation frequency is more than double. 0.7 - 1.1 v efficiency (*5) effi connect to external components - e8(*) - % electrical characteristics (continued) xc9110cxx1mr, xc9111cxx1mr test condition : unless otherwise specified, connect ce to v out , v in =v out 0.6, i out =, vpull=5.0v note: *1: torex sd, xb01sb04a2br is used, reverse current ir < 1 a (when reverse voltage v r = 10v is applied), in case of using selected parts. *2: supply current 1 is the value when the ic is constantly swit ching. in actual operation, t he oscillator periodically switch es, resulting in lower power consumption. please refer to input current (i in ) under no load condition for the actual current, which is supplied from the input power supply (v in ). *3: lx switch on resistance can be calculated by (v lx x rp) / (vpull - v lx ). * change vpull so that v lx will become 0.4v. *4: the lx. limit voltage function becomes stable when v out of the xc9110/9111 series is over 2.0v. *5: effi={[output voltage] (output current)} / [(input voltage) (input current)] 100 *6: please be aware of the absolute maximu m ratings of the external components. (*): please refer to the charts. ta = 2 5
9/35 xc9110/xc9111 series parameter symbol conditions min. typ. max. unit circuit output voltage v out connect to external components 0.975 v out 1.025 v output voltage temperature characteristics v out v out ? topr connect to external components - 40 Q topr Q 85 - 100 - ppm/ maximum input voltage v in 10 - - v - operation start voltage v st1 i out =1ma, connect to external components - 0.8 0.9 v oscillation start voltage v st2 applied 0.8v to v out - - 0.8 v operation hold voltage v hld i out =1ma, connect to external components 0.7 - - v supply current 1 (*1) i dd1 applied (output voltage 0.95) to v out - e2-1(*) e2-2(*) a supply current 2 i dd2 applied (output voltage 0.5v) to v out - e3-1(*) e3-2(*) a ext h on resistance r exth same as i dd1 , v ext =v out -0.4(*2) - e5-1(*) e5-2(*) ext l on resistance r extl same as i dd1 , v ext =0.4v(*3) - e6-1(*) e6-2(*) duty ratio dty same as i dd1 , measure lx waveform e7-1(*) e7-2(*) e7-3(*) % duty ratio 2 dty2 i out =1ma, measure lx on time (xc9111 only) connect to external components 48 56 64 % maximum oscillation maxfosc same as i dd1 85 100 115 khz maximum oscillation maxfosc same as i dd1 (xc9111 only) 153 180 207 khz standby current istb same as i dd1 , v ce =0v - - 0.50 a ce ?high? voltage v ceh same as i dd1 , determine lx oscillation 0.75 - - v ce ?low? voltage v cel same as i dd1 , determine lx shut-down - - 0.20 v ce ?high? current i ceh same as i dd1 , v ce =v out 0.95 - - 0.25 a ce ?low? current i cel same as i dd1 , v ce =0v - - -0.25 a efficiency (*4) effi connect to external components - e8(*) - % test condition : unless otherwise specified, connect ce to v out , v in =v out 0.6, i out = note: *1: "supply current 1" is the value when the ic is constantly sw itching. in actual operation, the oscillator periodically swit ches, resulting in lower power consumption. *2: ext h on resistance can be calculated by (0.4 x rp) / (v ext - vpull). * change vpull so that v ext will become v out -0.4v. *3: ext l on resistance can be calculated by (v ext x rp) / (vpull - v ext ). * change vpull so that v ext will become 0.4v. *4: effi={[output voltage] (output current)} / [(input voltage) (input current)] 100 *5: please be aware of the absolute maximu m ratings of the external components. (*): please refer to the charts. ta = 2 5 xc9110dxx1mr, xc9111dxx1mr electrical characteristics (continued
10/35 xc9110 / xc9111 series parameter symbol conditions min. typ. max. unit circuit output voltage v out connect to external components 0.975 v out 1.025 v output voltage temperature characteristics v out v out ? topr connect to external components - 40 Q topr Q 85 - 100 - ppm/ maximum input voltage v in 10 - - v - operation start voltage v st1 i out =1ma, connect to external components - 0.8 0.9 v oscillation start voltage v st2 applied 0.8v to v out , vpull=1.0v - - 0.8 v operation hold voltage v hld i out =1ma, connect to external components 0.7 - - v input current i in i out =0ma (*1) - e1-1(*) e1-2(*) a supply current 1 (*2) i dd1 applied (output voltage 0.95) to v out - e2-1(*) e2-2(*) a supply current 2 i dd2 applied (output voltage 0.5v) to v out - e3-1(*) e3-2(*) a lx switch on resistance r swon same as i dd1 , v lx =0.4v (*3) - e4-1(*) e4-2(*) lx leak current i lxl same as i dd2 , v lx =7v - - 1 a duty ratio dty same as i dd1 , measure lx waveform e7-1(*) e7-2(*) e7-3(*) % duty ratio 2 dty2 i out =1ma, measure lx on time (xc9111 only) connect to external components 48 56 64 % maximum oscillation maxfosc same as i dd1 85 100 115 khz maximum oscillation maxfosc2 same as i dd1 (xc9111 only) 153 180 207 khz lx limit voltage (*4) v lxlmt same as i dd1 , vlx when max. oscillation frequency is more than double. 0.7 - 1.1 v efficiency (*5) effi connect to external components - e8(*) - % electrical characteristics (continued) ta = 2 5 xc9110exx1mr, xc9111exx1mr test condition : unless otherwise specified, connect v dd to v out , v in =v out 0.6, i out =, vpull=5.0v note: *1: torex sd, xb01sb04a2br is used; reverse current ir < 1 a (when reverse voltage v r = 10v is applied), in case of using selected parts. *2: "supply current 1" is the value when the ic is constantly sw itching. in actual operation, the oscillator periodically swit ches, resulting in lower power consumption. please refer to input current (i in ) under no load condition for the ac tual current, which is supplied from the input power supply (v in ). *3: lx switch on resistance can be calculated by (v lx x rp) / (vpull - v lx ). * change vpull so that v lx will become 0.4v. *4: the lx limit voltage function becomes stable when v out of the xc9110/9111 series is over 2.0v. *5: effi={[output voltage] (output current)} / [(input voltage) (input current)] 100 *6: when using v dd and v out separately, please set the voltage range of v dd from 1.5v to 10v. the ic operates from v dd =0.8v, but output voltage and oscillation frequency will be stable when v dd =1.5v or more. *7: please be aware of the absolute maximu m ratings of the external components. (*): please refer to the charts.
11/35 xc9110/xc9111 series parameter symbol conditions min. typ. max. unit circuit output voltage v out connect to external components 0.975 v out 1 .025 v output voltage temperature characteristics v out v out ? topr connect to external components - 40 Q topr Q 85 - 100 - ppm/ maximum input voltage v in 10 - - v - operation start voltage v st1 i out =1ma, connect to external components - 0.8 0.9 v oscillation start voltage v st2 applied 0.8v to v out - - 0.8 v operation hold voltage v hld i out =1ma, connect to external components 0.7 - - v supply current 1 (*1) i dd1 applied (output voltage 0.95) to v out - e2-1(*) e2-2(*) a supply current 2 i dd2 applied (output voltage 0.5v) to v out - e3-1(*) e3-2(*) a ext h on resistance r exth same as i dd1 , v ext =v out =-0.4v (*2) - e5-1(*) e5-2(*) ext l on resistance r extl same as i dd1 , v ext =0.4v (*3) - e6-1(*) e6-2(*) duty ratio dty same as i dd1 , measure lx waveform e7-1(*) e7-2(*) e7-3(*) % duty ratio 2 dty2 i out =1ma, measure lx on time (xc9111 only) connect to external 48 56 64 % maximum oscillation maxfosc same as i dd1 85 100 115 khz maximum oscillation maxfosc same as i dd1 (xc9111 only) 153 180 207 khz efficiency (*4) effi connect to external components - e9(*) - % test condition : unless otherwise specified, connect v dd to v out , v in =v out 0.6, i out = note: *1: "supply current 1" is the value when the ic is constantly sw itching. in actual operation, the oscillator periodically swit ches, resulting in lower power consumption. *2: ext h on resistance can be calculated by (0.4 x rp) / (v ext - vpull). * change vpull so that v ext will become v out -0.4v. *3: ext l on resistance can be calculated by (v ext x rp) / (vpull - v ext ). * change vpull so that v ext will become 0.4v. *4: effi={[output voltage] (output current)} / [(input voltage) (input current)] 100 *5: when using v dd and v out separately, please set the voltage range of v dd from 1.5v to 10v. the ic operates from v dd =0.8v, but output voltage and oscillation frequency will be stable when v dd =1.5v or more. *6: please be aware of the absolute maximu m ratings of the external components. (*): please refer to the charts. ta = 2 5 xc9110fxx1mr, xc9111fxx1mr electrical characteristics (continued)
12/35 xc9110 / xc9111 series symbol e2-1 e2-2 e1-1 e1-2 e3-1 e3-2 e4-1 e4-2 e5-1 e5-2 e6-1 e6-2 parameter supply current 1 input current (no load) supply current 2 lx switch on resistance ext h on resistance ext l on resistance unit ( a) ( a) ( a) ( ) ( ) ( ) i dd1 i in i dd2 r swon r exth r extl setting voltage typ. max. typ. max. typ. max. typ. max. typ. max. typ. max. 1.5 7.7 15.1 1.6 8.0 15.6 1.7 8.3 16.2 1.8 8.6 16.8 4.2 6.3 160 240 67 101 1.9 8.9 17.5 3.5 2.0 9.3 18.2 4.3 8.6 1.9 3.9 3.5 5.3 108 162 52 78 2.1 9.7 18.9 2.2 10.1 19.7 2.3 10.5 20.6 4.4 8.8 4.0 2.4 11.0 21.5 2.5 11.5 22.5 3.2 4.8 91 137 45 68 2.6 12.0 23.5 4.5 9.1 2.0 4.1 2.7 12.5 24.5 2.8 13.1 25.6 2.9 13.7 26.8 3.0 14.3 28.0 4.6 9.3 4.2 3.1 15.0 29.3 2.8 4.2 70 105 38 57 3.2 15.7 30.6 3.3 16.4 31.9 4.7 9.5 2.1 4.3 3.4 17.1 33.3 3.5 17.8 34.8 3.6 18.6 36.3 4.8 9.7 4.4 3.7 19.4 37.9 3.8 20.3 39.5 3.9 21.1 41.1 4.0 22.0 42.8 5.0 10.0 2.2 4.5 4.1 22.9 44.5 4.2 23.8 46.3 4.3 24.8 48.2 5.1 10.2 4.6 4.4 25.7 50.0 4.5 26.7 52.0 4.6 27.7 53.9 5.2 10.4 2.3 4.7 4.7 28.8 56.0 4.8 29.8 58.0 4.9 30.9 60.1 5.0 31.7 63.4 5.3 10.6 4.8 5.1 32.3 64.7 5.2 32.9 65.9 2.5 3.8 59 89 33 50 5.3 33.5 67.1 5.4 10.8 2.4 4.9 5.4 34.1 68.3 5.5 34.7 69.5 5.6 35.3 70.7 5.5 11.1 5.0 5.7 36.0 72.0 5.8 36.5 73.1 5.9 37.1 74.3 6.0 37.7 75.5 5.6 11.3 2.5 5.1 6.1 38.4 76.8 6.2 38.9 77.9 6.3 39.5 79.1 5.7 11.5 5.2 6.4 40.2 80.4 6.5 40.8 81.6 6.6 41.3 82.7 5.8 11.7 2.6 5.3 6.7 42.0 84.0 6.8 42.6 85.2 6.9 43.2 86.4 7.0 43.7 87.5 6.0 12.0 2.7 5.4 2.1 3.2 40 60 24 36 electrical characterstics (continued) i dd2 , r exth , r extl , dty chart
13/35 xc9110/xc9111 series symbol c1 e7-1 e7-2 e7-3 e8 e9 efficiency parameter output current duty ratio xc9110 xc9111 xc9110 xc9111 unit (ma) (%) (%) dty effi setting voltage i out min. typ. max. typ. 1.5 7.5 1.6 8.0 1.7 8.5 1.8 9.0 1.9 9.5 60 75 60 75 2.0 10.0 2.1 10.5 2.2 11.0 2.3 11.5 2.4 12.0 2.5 12.5 2.6 13.0 2.7 13.5 2.8 14.0 2.9 14.5 65 79 61 75 3.0 30.0 3.1 31.0 3.2 32.0 3.3 33.0 3.4 34.0 3.5 35.0 3.6 36.0 3.7 37.0 3.8 38.0 3.9 39.0 77 82 77 82 4.0 40.0 4.1 41.0 4.2 42.0 4.3 43.0 4.4 44.0 4.5 45.0 4.6 46.0 4.7 47.0 4.8 48.0 4.9 49.0 80 86 80 83 5.0 50.0 5.1 51.0 70 75 80 5.2 52.0 5.3 53.0 5.4 54.0 5.5 55.0 5.6 56.0 5.7 57.0 5.8 58.0 5.9 59.0 6.0 60.0 6.1 61.0 6.2 62.0 6.3 63.0 6.4 64.0 6.5 65.0 6.6 66.0 6.7 67.0 6.8 68.0 6.9 69.0 7.0 70.0 68 73 78 82 88 82 85 electrical characterstics (continued) i out , dty, effi chart
14/35 xc9110 / xc9111 series l: 100 h (coil, cr54, sumida) l: 47 h (coil, cr54, sumida) sd: xb01sb04a2br (schottky type, torex) sd: xb01sb04a2br (schottky type, torex) cl: 16v, 47 f (tantalum) cl: 16v, 47 f (tantalum) cin: 16v, 47 f (tantalum) cin: 16v, 47 f (tantalum) rb: 500 cb: 2200pf tr: 2sd1628 typical application circuits c type circuit d type circuit e type circuit f type circuit l: 100 h (coil, cr54,sumida) sd: xb01sb04a2br (schottky type, torex) c l : 16v, 47 f (tantalum) c in : 16v, 47 f (tantalum) l: 47 h (coil, cr54,sumida) sd: xb01sb04a2br (schottky type, torex) c l : 16v, 47 f (tantalum) c in : 16v, 47 f (tantalum) r b : 500 c b : 2200pf tr: 2sd1628 (sanyo) l: 100 h (coil, cr54,sumida) sd: xb01sb04a2br (schottky type, torex) c l : 16v, 47 f (tantalum) c in : 16v, 47 f (tantalum) l: 47 h (coil, cr54,sumida) sd: xb01sb04a2br (schottky type, torex) c l : 16v, 47 f (tantalum) c in : 16v, 47 f (tantalum) r b : 1k c b : 3300pf tr: 2sd1628 (sanyo) a type circuit b type circuit
15/35 xc9110/xc9111 series operational explanation the xc9110/9111 series are pfm controlled step-up dc/dc converter (a, c and e types) / controller ics (b, d and f types), which contain voltage reference source, pfm comparator , duty selector, pfm controlled osc, vlx limiter, driver transistor and so on. with the xc9110 series, ma ximum duty ratio is set to 75% (maximum oscillation frequency=maxfosc: 100khz) making it suitable for use wi th large current operations. the xc9111 series automatically switches duty ratio between 56% (maxfos c: 180khz) and 75% (maxfosc: 100khz) when it senses changes in load and can support both large and small currents. the reference voltage source provides the reference voltage to ensure stable output volt age of the dc/dc converter. < pfm comparator > the pfm comparator compares the feedback voltage divided by t he internal split resistors with the internal reference voltage. when the feedback voltage is higher than the re ference voltage, pfm controlled osc will be stopped. when the feedback voltage is lower than the reference voltage, the pfm controlled osc will be operated so that the output voltage will be stable by sending a signal to the buffer drive ci rcuit and controlling the internal or external driver transist or. < duty selector > with the xc9111 series, the duty selector automatically sw itches duty ratio between 56% and 75% when it senses changes in load and can support both large and small currents. < pfm controlled oscillator > the pfm controlled osc determines maximum oscillation frequenc y. the circuit generates the oscillation frequency of 100khz at 75% duty and 180khz at 56%. < v lx limiter> the v lx circuit of the xc9110/9111 a, c and d types detects in-rush current and overcurrent, which flows from the v out pin to the lx pin during short-circuit. in overcurrent, the driver transistor will be off. when the overcurrent state is eliminated, the ic resumes its normal operation. the chip enable function of the xc9110/9111 c and d types enabl es the ic to be in shut down mode when a low level signal is input to the ce pin. during the shut do wn mode, the current consumption will be reduced to 0.5 a (max.). with the separated v dd pin, the xc9110/9111 e and f types can be operated in both low and high voltage.
16/35 xc9110 / xc9111 series v out (v) i out (ma) v in (v) r b ( ) v out (v) i out (ma) v in (v) r b ( ) 1.8 10 1.2 4.5 3.3 5 1.2 6.5 1.8 10 1.5 6.0 3.3 5 1.5 6.5 1.8 30 1.2 2.0 3.3 10 1.2 5.0 1.8 30 1.5 2.0 3.3 10 1.5 4.5 1.8 50 1.2 1.2 3.3 30 1.2 3.5 1.8 50 1.5 1.5 3.3 30 1.5 3.5 external components tr.: *using a mosfet xp151a13a0mr (n-ch power mosfet, torex) note : v gs breakdown voltage of this transistor is 8v so please be careful with the power supply voltage. if the power supply voltage is over 6v, please use the xp151a12a2mr with a v gs breakdown voltage of 12v. * using a npn transistor 2sd1628 (sanyo) r b : 500 (adjust in accordance with load and tr?s hfe.) c b : 2200pf (ceramic) c b Q 1 / ( 2tt x r b x fosc x 0.7 ) notes on use 1. please do not exceed the value of stated absolute maximum ratings. 2. the dc/dc converter / controller ic's performance is greatly in fluenced by not only the ics' characteristics, but also by those of the external components. care must be taken when selecting the external components. 3. the lx limit voltage function becomes stable when v out of the xc9110/9111c series is over 2.0v and the v dd of the xc9110/9111e series is over 2.0v. 4. make sure that the pcb gnd traces are as thick as possi ble, as variations in ground potential caused by high ground currents at the time of switching ma y result in instability of the ic. 5. please mount each external component as close to the ic as possible and use thick, short connecting traces to reduce the circuit impedance. r b value example (when using npn transistor) sd: xp01sb04a2br (torex) ma2q735 (matsushita) c l : 16v, 47 f (tantalum type, kyocera taj) c in : 16v, 47 f (tantalum type, kyocera taj) 16v, 220 f (electrolytic capacitor) l: 100 h (cr54,sumida) 22 h, 47 h (cr54, sumida) 100 h (cdrh6d28,sumida) * tr.: 2sd1628
17/35 xc9110/xc9111 series test circuits circuit cp: 100 f (os-con, sanyo) circuit c in : 47 f, 16v (tantalum) l: cr54, 100 h (sumida) tr: 2sd1628 (sanyo) c b : 2200pf r b : 500 sd: xb01sb04a2br (schottky, torex) c l : 47 f, 16v (tantalum) circuit c in : 47 f, 16v (tantalum) l: cr54, 100 h (sumida) sd: xb01sb04a2br (schottky, torex) c l : 47 f, 16v (tantalum) circuit rp: 300 rp: 10 (for lx on resistance and measuring lx limit current) rp: 200 (for measuring ext on resistance) cp: 100 f (os-con, sanyo) circuit circuit circuit circuit circuit circuit circuit circuit
18/35 xc9110 / xc9111 series typical performance characteristics (1) output voltage vs. output current *topr = 25
19/35 xc9110/xc9111 series typical performance characteristics (continued) (1) output voltage vs. out put current (continued) *topr = 25
20/35 xc9110 / xc9111 series typical performance characteristics (continued) (2) efficiency vs. output current *topr = 25
21/35 xc9110/xc9111 series typical performance characteristics (continued) (2) efficiency vs. output current (continued) *topr = 25
22/35 xc9110 / xc9111 series typical performance characteristics (continued) (3) ripple voltage vs. output current *topr = 25
23/35 xc9110/xc9111 series typical performance characteristics (continued) (3) ripple voltage vs. output current (continued) *topr = 25
24/35 xc9110 / xc9111 series typical performance characteristics (continued) (4) supply current 1 vs. output voltage (5) supply current 2 vs. output voltage (6) stand-by current vs. output voltage (7) no load input current vs. output voltage (8) lx limit voltage vs. output voltage (9) lx switch-on resistance vs. output voltage * the reason for the increase in the "no load input current" figure at ta=85 in the performance characteristics is because of an increase in the reverse current of the schottky diode and not because of abnormalities of the ic itself. *topr = 25
25/35 xc9110/xc9111 series typical performance characteristics (continued) (10) ext h on resistance vs. output voltage (11) ext l on resistance vs. output voltage (12) maximum oscillation frequency 1. vs. output voltage (13) maximum oscillation frequency 2 vs. output voltage (14) duty ratio 1 vs. output voltage (15) duty ratio 2 vs. output voltage *topr = 25
26/35 xc9110 / xc9111 series typical performance characteristics (continued) (16) output voltage vs. ambient temperature ( 17) ce ?h?, ?l? voltage vs. output voltage (18) operation start voltage vs. ambient temperature ( 19) oscillation start voltage vs. ambient temperature (20) operation hold volt age vs. ambient temperature *topr = 25
27/35 xc9110/xc9111 series typical performance characteristics (continued) (21) load transient response *topr = 25 vin=2.4v, vdd=vout, iout=0.1ma 50ma
28/35 xc9110 / xc9111 series typical performance characteristics (continued) (22) input transient response *topr = 25
29/35 xc9110/xc9111 series packaging information usp-6c sot-25 (sot-23-5) sot-23 sot-89
30/35 xc9110 / xc9111 series p a ckaging information (continued) usp-6c recommended pattern layout usp-6c recommended metal mask design
31/35 xc9110/xc9111 series mark functions product series - built-in transistor xc9111axxxxx - external transistor xc9111bxxxxx mark output voltage fosc=100khz 1.x 1 2.x 2 3.x 3 4.x 4 5.x 5 6.x 6 7.x 7 mark output voltage fosc=100khz x.0 0 x.1 1 x.2 2 x.3 3 x.4 4 x.5 5 x.6 6 x.7 7 x.8 8 x.9 9 marking rule sot-23 5 6 represents product series represents integer of output voltage and oscillation frequency represents production lot number 0 to 9, a to z repeated (g, i, j, o, q, w excepted)
32/35 xc9110 / xc9111 series mark function product series v ce tr. built-in xc9110cxxxxx x ce external tr. xc9110dxxxxx y v dd /v out tr. built-in xc9110exxxxx z v dd /v out external tr. xc9110fxxxxx 5 ce tr. built-in xc9111cxxxxx 6 ce external tr. xc9111dxxxxx 7 v dd /v out tr. built-in xc9111exxxxx 8 v dd /v out external tr. xc9111fxxxxx mark output voltage fosc=100khz 1.x 1 2.x 2 3.x 3 4.x 4 5.x 5 6.x 6 7.x 7 mark output voltage fosc=100khz x.0 0 x.1 1 x.2 2 x.3 3 x.4 4 x.5 5 x.6 6 x.7 7 x.8 8 x.9 9 marking rule (continued) represents product series represents integer of output voltage and oscillation frequency sot-25 represents decimal point of output voltage and oscillation frequency represents production lot number 0 to 9, a to z repeated (g, i, j, o, q, w excepted) sot-25 (top view)
33/35 xc9110/xc9111 series mark functions product series - built-in transistor xc9111axxxxx - external transistor xc9111bxxxxx mark output voltage fosc 100khz 1.x 1 2.x 2 3.x 3 4.x 4 5.x 5 6.x 6 7.x 7 mark output voltage fosc 100khz x.0 0 x.1 1 x.2 2 x.3 3 x.4 4 x.5 5 x.6 6 x.7 7 x.8 8 x.9 9 marking rule (continued) 5 6 represents product series represents integer of output voltage and oscillation frequency represents decimal point of output voltage and oscillation frequency represents production lot number 0 to 9, a to z repeated (g, i, j, o, q, w excepted) sot-89
34/35 xc9110 / xc9111 series mark product series m xc9110xxx1dx n xc9111xxx1dx mark function product series c ce tr. built-in xc911xcxx1dx d ce external tr. xc911xdxx1dx e v dd /v out tr. built-in xc911xexx1dx f v dd /v out external tr. xc911xfxx1dx mark output voltage 1 1.x 2 2.x 3 3.x 4 4.x 5 5.x 6 6.x 7 7.x mark output voltage 0 x.0 1 x.1 2 x.2 3 x.3 4 x.4 5 x.5 6 x.6 7 x.7 8 x.8 9 x.9 mark oscillation frequency product series 1 x.0 xc911xxxx1dx represents product series represents series type usp-6c represents integer of output voltage represents decimal point of output voltage represents production lot number 0 to 9, a to z repeated (g, i, j, o, q, w excepted) * no character inversion used represents oscillation frequency usp-6c (top view) marking rule (continued)
35/35 xc9110/xc9111 series 1. the products and product specifications cont ained herein are subject to change without notice to improve performance characteristic s. consult us, or our representatives before use, to confirm that the inform ation in this catalog is up to date. 2. we assume no responsibility for any infri ngement of patents, pat ent rights, or other rights arising from the use of any info rmation and circuitry in this catalog. 3. please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog. 4. the products in this catalog are not developed, designed, or approved for use with such equipment whose failure of malfunction ca n be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. atomic energy; aerospace; transpor t; combustion and associated safety equipment thereof.) 5. please use the products listed in this catalog within the specified ranges. should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. we assume no responsibility for damage or loss due to abnormal use. 7. all rights reserved. no part of this ca talog may be copied or reproduced without the prior permission of torex semiconductor ltd.

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