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step-down dc/dc converter controller with voltage detector 1 no. ea-066-0204 outline

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r1221n 12 typical characteristcs 1) output voltage vs. output current l=27 m h 3.200 3.220 3.240 3.260 3.280 3.300 3.320 3.340 3.360 3.380 3.400 output current i out (a) 12v 8v 4.5v 1e-05 0.0001 0.001 0.01 0.1 1 output voltage v out (v) r1221n33ah l=27 h 1.480 1.520 1.515 1.510 1.505 1.500 1.495 1.490 1.485 output current i out (a) 13.2v 8v 5v 2.3v 1e-05 0.0001 0.001 0.01 0.1 1 output voltage v out (v) r1221n15xh 2) efficiency vs. output current cd104-27 h si3443dv 0 10 20 30 40 50 60 70 80 90 100 output current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n33aa(v in =4.5v) cd104-27 h si3443dv 0 10 20 30 40 50 60 70 80 90 100 output current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n33aa(v in =12v) cd104-27 h si3443dv 0 20 40 60 80 100 output current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n33ac(v in =4.5v) cd104-27 h si3443dv 0 20 40 60 80 100 output current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n33ab(v in =12v)
r1221n 13 cd104-27 h si3443dv 0 10 20 30 40 50 60 70 80 90 100 output current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n33ac(v in =4.5v) cd104-27 h si3443dv 0 10 20 30 40 50 60 70 80 90 100 output current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n33ac(v in =12v) cd104-27 h si3443dv 0 20 40 60 80 100 output current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n50xa(v in =6.0v) cd104-27 h si3443dv 0 20 40 60 80 100 output current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n50xa(v in =12v) cd104-27 h si3443dv 0 20 40 60 80 100 output current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n50xb(v in =6.0v) cd104-27 h si3443dv 0 20 40 60 80 100 output current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n50xb(v in =12v)
r1221n 14 cd104-27 h si3443dv 0 20 40 60 80 100 outpur current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n50xc(v in =6.0v) cd104-27 h si3443dv 0 20 40 60 80 100 outpur current i out (ma) 0.1 1 10 100 1000 efficiency (%) r1221n50xc(v in =12v) 3) ripple voltage vs. output current l=27 h c=47 f(ta) 0 20 40 60 80 100 120 140 160 180 200 output current i out (ma) v in =4.5v v in =8v v in =12v 1 10 100 1000 ripple voltage v rpp (mv) r1221n33aa l=27 h c=47 f(ta) 0 20 40 60 80 100 120 140 160 180 200 output current i out (ma) v in =6v v in =8v v in =12v 1 10 100 1000 ripple voltage v rpp (mv) r1221n33aa l=27 h c=47 f(ta) 0 20 40 60 80 100 120 140 160 180 200 output current i out (ma) v in =4.5v v in =8v v in =12v 1 10 100 1000 ripple voltage v rpp (mv) r1221n33ab l=27 h c=47 f(ta) 0 20 40 60 80 100 120 140 160 180 200 output current i out (ma) v in =6v v in =8v v in =12v 1 10 100 1000 ripple voltage v rpp (mv) r1221n50xb
r1221n 15 l=27 h c=47 f(ta) 0 20 40 60 80 100 120 140 160 180 200 output current i out (ma) v in =4.5v v in =8v v in =12v 1 10 100 1000 ripple voltage v rpp (mv) r1221n33ac l=27 h c=47 f(ta) 0 20 40 60 80 100 120 140 160 180 200 output current i out (ma) v in =6v v in =8v v in =12v 1 10 100 1000 ripple voltage v rpp (mv) r1221n50xc 4) oscillator frequency vs. input voltage l=27 h 0 100 200 300 400 500 600 input voltage v in (v) 0 5 10 15 oscillator frequency fosc(khz) r1221n15xb l=27 h 0 100 200 300 400 500 600 input voltage v in (v) 0 5 10 15 oscillator frequency fosc(khz) r1221n15xa 5) output voltage vs. input voltage l=27 h 1.47 1.48 1.49 1.50 1.51 1.52 1.53 input voltage v in (v) 0 5 10 15 output voltage v out (v) r1221n15xb l=27 h 1.47 1.48 1.49 1.50 1.51 1.52 1.53 input voltage v in (v) 0 5 10 15 output voltage v out (v) r1221n15xa
r1221n 16 l=27 h 3.24 3.26 3.28 3.30 3.32 3.34 3.36 input voltage v in (v) 0 5 10 15 output voltage v out (v) r1221n33ab l=27 h 3.24 3.26 3.28 3.30 3.32 3.34 3.36 input voltage v in (v) 0 5 10 15 output voltage v out (v) r1221n33aa 6) output voltage vs. temperature l=27 h 3.27 3.28 3.29 3.30 3.31 temperature topt ( c) -50 0 50 100 output voltage v out (v) r1221n33ah l=27 h v in =2.7v 1.47 1.48 1.49 1.50 1.51 temperature topt ( c) -50 0 50 100 output voltage v out (v) r1221n15xb 7) detector threshold vs. temperature temperature topt ( c) -50 0 50 100 1.97 1.98 1.99 2.00 2.01 detector threshold vd out (v) v in =6v r1221n25xa(vd=2.0v) temperature topt ( c) -50 0 50 100 1.18 1.19 1.20 1.21 1.22 detector threshold vd out (v) v in =6v r1221n15xb(vd=1.2v)
r1221n 17 temperature topt ( c) -50 0 50 100 2.94 2.96 2.98 3.00 3.04 3.02 3.06 detector threshold vd out (v) v in =6v r1221n33ab(vd=3.0v) 8) oscillator frequency vs. temperature temperature topt ( c) -50 0 50 100 400 450 500 550 600 oscillator frequency fosc(khz) l=27 h v in =4.5v r1221n33ab l=27 h v in =3.7v temperature topt ( c) -50 0 50 100 240 260 280 300 340 320 360 oscillator frequency fosc(khz) r1221n25xa 9) supply current vs. temperature temperature topt ( c) -50 0 50 100 90 95 105 100 110 115 120 130 125 135 supply current1 ( a) r1221n33ah v in =15v v in =13.2v v in =8v temperature topt ( c) -50 0 50 100 50 60 70 80 90 100 supply current1 ( a) r1221n33ag v in =15v v in =13.2v v in =8v
r1221n 18 10) soft-start time vs. temperature temperature topt ( c) -50 0 50 100 0 2 4 6 8 10 r1221n33ab soft-start time (msec) l=27 h v in =4.5v temperature topt ( c) -50 0 50 100 2 4 6 8 10 12 r1221n25xa soft-start time (msec) l=27 h v in =3.7v 11) delay time for latch-type protection vs. temperature temperature topt ( c) -50 0 50 100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 delay time for latch-type protection (msec) v in =4.5v r1221n33ab temperature topt ( c) -50 0 50 100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 delay time for latch-type protection (msec) v in =3.7v r1221n25xa 12) delay time for reset-type protection vs. temperature temperature topt ( c) -50 0 50 100 0 1 2 3 4 5 delay time for reset-type protection (msec) v in =4.5v r1221n33ah temperature topt ( c) -50 0 50 100 0 1 2 3 4 5 delay time for reset-type protection (msec) v in =4.5v r1221n33ag
r1221n 19 13) vd output delay time vs. temperature v in =8.0v temperature topt ( c) -50 0 50 100 0 1 2 3 4 5 6 vd output delay time (msec) r1221n33ab v in =8.0v temperature topt ( c) -50 0 50 100 0 1 2 3 4 5 6 vd output delay time (msec) r1221n25xa 14) ext"h" output current vs. temperature temperature topt ( c) -50 0 50 100 0 2 4 6 8 10 12 14 16 ext"h"output current (ma) r1221n33ab 15) ext "l" output current vs. temperature temperature topt ( c) -50 0 50 100 0 5 10 15 20 25 30 ext"l" output current (ma) r1221n33ab
r1221n 20 16) vd out "l" output current vs. temperature temperature topt ( c) -50 0 50 100 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 vdlc (ma) r1221n33ad 17) load transient response time (sec) 0 0.0005 0.001 0.1 500 3 3.2 3.4 output voltage v out (v) r1221n33aa v in =5v l=27 h output current i out (ma) time (sec) 0 0.05 0.1 0.1 500 3.3 3.4 3.5 3.6 output voltage v out (v) r1221n33aa v in =5v l=27 h output current i out (ma) time (sec) 0 0.0005 0.001 0.1 500 3 3.1 3.2 3.3 3.4 output voltage v out (v) r1221n33ab v in =5v l=27 h output current i out (ma) time (sec) 0 0.05 0.1 0.1 500 3.3 3.4 3.5 3.6 output voltage v out (v) r1221n33ab v in =5v l=27 h output current i out (ma)
r1221n 21 time (sec) 0 0.0005 0.001 0.1 500 2.8 2.9 3 3.1 3.2 3.3 3.4 output voltage v out (v) r1221n33ac v in =5v l=27 h output current i out (ma) time (sec) 0 0.05 0.1 0.1 500 3.3 3.4 3.5 3.6 output voltage v out (v) r1221n33ac v in =5v l=27 h output current i out (ma) time (sec) 0 0.0005 0.001 0.1 500 2.9 3 3.1 3.2 3.3 3.4 output voltage v out (v) r1221n33ad v in =5v l=27 h output current i out (ma) time (sec) 0 0.05 0.1 0.1 500 3.3 3.4 3.5 3.6 output voltage v out (v) r1221n33ad v in =5v l=27 h output current i out (ma) 18) turn-on waveform time (sec) -0.01 0 0.01 0.02 0 10 0 0.5 1 1.5 2 2.5 3 3.5 output voltage v out (v) r1221n33aa (v in =10v,i out =0ma) l=27 h ce voltage(v) time (sec) -0.01 0 0.01 0.02 0 5 0 0.5 1 1.5 2 2.5 3 3.5 output voltage v out (v) r1221n33aa (v in =5v,i out =0ma) l=27 h ce voltage (v)
r1221n 22 time (sec) -0.01 0 0.01 0.02 0 10 0 0.5 1 1.5 2 2.5 3 3.5 output voltage v out (v) r1221n33ab (v in =10v,i out =0ma) l=27 h ce voltage(v) time (sec) -0.01 0 0.01 0.02 0 5 0 0.5 1 1.5 2 2.5 3 3.5 output voltage v out (v) r1221n33ab (v in =5v,i out =0ma) l=27 h ce voltage(v) time (sec) -0.01 0 0.01 0.02 0 10 0 0.5 1 1.5 2 2.5 3 3.5 output voltage v out (v) r1221n33aa (v in =10v,i out =100ma) l=27 h ce voltage(v) time (sec) -0.01 0 0.01 0.02 0 5 0 0.5 1 1.5 2 2.5 3 3.5 output voltage v out (v) r1221n33aa (v in =5v,i out =100ma) l=27 h ce voltage(v) time (sec) -0.01 0 0.01 0.02 0 10 0 0.5 1 1.5 2 2.5 3 3.5 output voltage v out (v) r1221n33ab (v in =10v,i out =100ma) l=27 h ce voltage(v) time (sec) -0.01 0 0.01 0.02 0 5 0 0.5 1 1.5 2 2.5 3 3.5 output voltage v out (v) r1221n33ab (v in =5v,i out =100ma) l=27 h ce voltage(v)

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