94 features ? 2 regulators combined 1 package ? compact inline package ? output current (0.5a 2 output) ? output voltage of ch2 selectable from 4 levels. ? built-in flywheel diode (schottky barrier diode) ? requires only 7 external components (2 outputs) ? phase correction and output voltage adjustment performed internally ? built-in reference oscillator (125khz) - compact choke coil can be used due to high frequency (compared to existing sanken product) ? built-in overcurrent and thermal protection circuits ? built-in soft start circuit (output on/off control) applications ? for bs and cs antenna power supplies ? for stabilization of the secondary stage of switching power supplies ? electronic equipment lineup 2-output separate excitation switching type unit v w w c c symbol v in p d1 p d2 t j t stg STA801M/802m recommended operating conditions absolute maximum ratings STA801M/802m unit v a c parameter dc input voltage power dissipation junction temperature storage temperature part number STA801M sta802m parameter dc input voltage range output current range per channel operating temperature range output voltage (v) ch1 ch2(select one output) 5 9.0 / 11.5 / 12.1 / 15.5 9 9.1 / 11.7 / 12.1 / 15.7 ratings 43 6.7(with infinite heatsink) 1.6(without heatsink, stand-alone operation) +125 C40 to +125 symbol v in i o t jop ratings min. max. ch2 v omax. +2 40 0 0.5 C20 +125
95 STA801M/802m electrical characteristics (t a =25 c) *efficiency indicates the value when only one channel is active. the value can be calculated as shown below. 7.5ma is deducte d for the no-load circuit current of icc at unused output. 2 = v o ?i o 100(%) v in ?(i in C0.0075) ch1 ch2 (select one output) v o 2-4 common unit v % mv/ c mv mv v v v v % mv/ c mv mv ma kh z a symbol v o 1 conditions 1 conditions ? v o / ? t a1 ? v oline1 conditions ? v oload1 conditions v o 2-1 conditions v o 2-2 conditions v o 2-3 conditions v o 2-4 conditions conditions ? v o / ? t a ? v oline conditions ? v oload conditions i cc f i s1 ratings STA801M sta802m min. typ. max. min. typ. max. 4.80 5.00 5.20 8.64 9.00 9.36 v in =20v, i o =0.3a v in =20v, i o =0.3a 80 86 v in =20v, i o =0.3a v in =20v, i o =0.3a 0.5 1.0 30 90 35 110 v in =10 to 30v, i o =0.3a v in =14 to 30v, i o =0.3a 10 40 20 80 v in =20v, i o =0.1 to 0.4a v in =20v, i o =0.1 to 0.4a 8.64 9.00 9.36 8.74 9.10 9.46 v in =20v, i o =0.3a v in =20v, i o =0.3a 11.04 11.50 11.96 11.24 11.70 12.16 v in =20v, i o =0.3a v in =20v, i o =0.3a 11.62 12.10 12.58 11.62 12.10 12.58 v in =20v, i o =0.3a v in =20v, i o =0.3a 14.88 15.50 16.12 15.08 15.70 16.32 v in =20v, i o =0.3a v in =20v, i o =0.3a 89 89 v in =20v, i o =0.3a v in =20v, i o =0.3a 2.0 2.0 40 130 40 130 v in =20 to 30v, i o =0.3a v in =20 to 30v, i o =0.3a 30 120 30 120 v in =20v, i o =0.1 to 0.4a v in =20v, i o =0.1 to 0.4a 15 15 125 125 0.51 0.7 0.51 0.7 parameter output voltage 1 efficiency * temperature coefficient of output voltage line regulation load regulation output voltage 2-1 output voltage 2-2 output voltage 2-3 output voltage 2-4 efficiency* temperature coefficient of output voltage line regulation load regulation no-load circuit current switching frequency overcurrent protection starting current
96 external dimensions block diagram s w1 v in ss 1 ss 2 v o2 cont gnd 6 3 1 5 4 v os1 2 drive pwm logic pwm + C + C vref p.reg. s w2 v os2 C1 8 4 v os2 C2 9 10 drive pwm logic pwm + C + C vref ocp tsd ocp pwm osc f/4 reset amp. amp. 1.15 25.25 0.3 c1.5 0.5 12345678910 +0.2 C0.1 0.55 +0.2 C0.1 9 p2.54 0.5 =22.86 1 9 0.2 (1) 3.15 0.5 (3.1) 4 0.2 1.2 0.1 2C(r1) 4.3 0.7 r-end 2C(r0.65) 0.55 +0.2 C0.1 a b (tip dimension) (tip dimension) STA801M/802m (unit:mm) a. part number b. lot number pin arrangement q v o2 c ont w v os1 e ss1 r sw out1 t gnd plastic mold package type flammability: ul94v-0 weight: approx. 2.5g y v in u sw out2 i ss2 o v os2 C2 !0 v os2 C1
97 t a -p d characteristics sta800m standard external circuit + 4 sw out1 v in v in v o2 cont gnd gnd ss 1 ss 2 v os1 v os2 v os2 sw out2 C2 C1 2 7 10 9 6 3 8 1 5 l 1 ch 1 ch 2 v o1 v o2 o r l 2 150 h 5v:100 h 9v:150 h open:on low :off 330 f c 3 c 2 330 f c 1 220 f c 4 0.47 f c 5 0.47 f + + + + open:on low :off 7 6 5 4 3 2 1 0 power dissipation p d (w) ambient temperature t a ( c) 0 C30 25 50 75 100 125 without heatsink with infinite heatsink see p.98 "output selection method" for details about connecting v os2 -1 and v os2 -2 of channel 2. STA801M/802m
98 selecting external components 1. inductors l 1 and l 2 (1) suitable for switching regulators do not use a coil as a noise filter because it generates excess heat. (2) appropriate inductance a low inductance may cause abnormal oscillation, or cause the overcurrent protection circuit to malfunction in the rated curren t range. (3) satisfying the rated current exceeding the rated current may generate an extremely high current to flow due to magnetic saturation. 2. capacitors c 1 , c 2 , and c 3 (1) satisfy the breakdown voltage and allowable ripple current exceeding the ratings of these capacitors or using them without derating may shorten their service lives and also cause abnorma l oscillation. (2) low impedance (c 2 , and c 3 ) a low-impedance model is recommended for c 2 and c 3 to reduce the ripple voltage and stabilize switching. for stable operation throughout the input voltage range, however, the dc equivalent series resistance (esr) of c 2 and c 3 should be 0.1 ? or less. 3. capacitors c 4 and c 5 (1) c 4 and c 5 are soft-start capacitors. selecting ch2 output voltage when the v o2 c ont terminal voltage is set to 0.5v or less, the output voltage changes to the values shown below. to switch the potential at the v o2 c ont terminal, drive the open collector of the transistor. no external voltage can be applied to the terminal. leave the terminal open when not in use because the terminal is already pulled up in the ic. when using terminal no. 9, short it to terminal no. 10. ( ): sta802m soft start on/off circuit terminal nos. 3 and 8 are soft start terminals. connect a capacitor to the terminal to permit a soft start. output can be tur ned on and off by using the soft start terminals. set the soft start terminal voltage to v ssl (0.15v) or less to stop the output. to switch the potential at the soft start terminals, drive the open collector of the transistor. since the discharge currents from c 4 and c 5 flow to the on/off control transistor, limit the current for protection. the ss terminal is pulled up to the power supply in the ic and no external voltage can be applied to the terminal. 9pin 10pin STA801M sta802m open low open low 9v 12.1v 9.1v 12.1v 11.5v 15.5v 11.7v 15.7v sta800m v o2 cont 1 9 10 7 v o2 9v (9.1v) 12.1v (12.1v) + sta800m v o2 cont 1 10 7 v o2 11.5v (11.7v) 15.5v (15.7v) + sta800m s.s. c 4 , c 5 3 or 8 + sta800m soft start soft start +v o on/off s.s. c 4 , c 5 3 or 8 + v o2 cont terminal (1 pin) v o2 sensing terminal v o2 output voltage low : 0.5v or less STA801M/802m
99 typical characteristics p d characteristics(ch1:5v) overcurrent protection characteristics(ch1:5v) output voltage(ch2:9v) efficiency characteristics(ch2:9v) p d characteristics(ch2:9v) temperature characteristics(ch1:5v, ch2:9v) STA801M load regulation(ch1:9v) p d characteristics(ch1:9v) p d characteristics(ch2:15.7v) 6 4 2 0 0 5 10 15 20 input voltage v in (v) output voltage v o (v) 0.3a i o =0a 0.5a 5.1 5.0 4.9 0 0 0.1 0.2 0.3 0.4 0.5 output current i o (a) output voltage v o (v) v in =40v 20v 10v 7v 100 80 60 40 0 0 0.1 0.2 0.3 0.4 0.5 output current i o (a) efficiency (%) v in =7v 20v 30v 40v 0.8 0.6 0.4 0.2 0 0 0.1 0.2 0.3 0.4 0.5 output current i o (a) power dissipation p d (w) 30v 7v v in =40v 20v 6 4 2 0 0 0.2 0.4 0.6 0.8 1.0 output current i o (a) output voltage v o (v) v in =7v 20v 40v 100 80 60 40 0 0 0.1 0.2 0.3 0.4 0.5 output current i o (a) efficiency (%) 20v 30v v in =11v 40v 0.8 0.6 0.4 0.2 0 0 0.1 0.2 0.3 0.4 0.5 output current i o (a) power dissipation p d (w) 30v 11v v in = 40 v 20v 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 0.1 0.2 0.3 0.4 0.5 output current i o (a) power dissipation p d (w) 20v 30v v in =40v 17.7v 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 0.1 0.2 0.3 0.4 0.5 output current i o (a) power dissipation p d (w) 30v 20v 11v v in =40v 9.1 9.0 8.9 0 0 0.1 0.2 0.3 0.4 0.5 output current i o (a) output voltage v o (v) v in =40v 30v 20v 11v 160 140 120 100 80 0 5.6 5.4 5.2 5.0 4.8 0 9.6 9.4 9.2 9.0 8.8 0 C40 C20 0 20 40 60 80 100 120 f ambient temperature t a ( c) oscillation frequency f (khz) output voltage v o (v) (v in =20v, i o =0.3a) ch1 ch2 efficiency (%) v o ch2 9v v o ch1 5v ch2 9v ch1 5v sta802m output voltage(ch1:5v) load regulation(ch1:5v) efficiency characteristics(ch1:5v) (t a =25 c) STA801M/802m 12 8 4 0 0 5 10 15 20 input voltage v in (v) output voltage v o (v) i o =0a 0.3a 0.5a
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