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| small and high accuracy temperature sensor ic series detect temperature changeable thermostat output temperature sensor ic bdf 0g series description low quiescent current (16ua), high accu racy thermostat (temperature switch) ics built in temperature sensor, reference voltage regulator, d/a converter, and comparator detecting temperature by itself, os terminal state is changed at logically. open drain output ( active l ) is available in bdf 0g series. features 1) detection temperature range -10 +130 by 8 products. 2) 2.5 step selectable detection temperature with c1 and c2. 3) hysteresis temperature ( typically 10 ) 4) high accuracy analog output ( typically 3.5 @ta=30 ) 5) analog output temperature sensitivity ( typically -10.8mv/ ) 6) low supply current ( typically 16ua ) 7) small package ( typically 2.90mm 2.80mm 1.25mm ) 8) esd rating 8kv ( hbm ) 9) excellent ripple rejection characteristic applications thermal protection for electrical equipment (notebook pc, cell phone, fpd-tv, etc.) fan control for thermal management jun. 2008
2/8 products variation bdf 0 g detection temperature output format package (center temperature) (open drain, active low) (ssop6) 120:120 040: 40 110:110 030: 30 100:100 020: 20 090: 90 010: 10 080: 80 000: 0 070: 70 910:-10 060: 60 920:-20 050: 50 temperature / output format table c1, c2 status description ( l : low, o : open, h : high ) ! ""# "$" $% %$" &$% "$" $% %$" &$% '"$" ( ) * " ! """# +"$" + $% +%$" +&$% ""$" " $% "%$" "&$% "$" , !"-""# &"$" & $% &%$" &&$% -"$" - $% -%$" -&$% +"$" ( !".""# %"$" % $% %%$" %&$% ."$" . $% .%$" .&$% &"$" / !",""# '"$" ' $% '%$" '&$% ,"$" , $% ,%$" ,&$% %"$" 0 !" ""# "$" $% %$" &$% "$" $% %$" &$% '"$" !""""# 1 "$" 1&$% 1%$" 1 $% "$" $% %$" &$% "$" !+ ""# 1'"$" 1 &$% 1 %$" 1 $% 1 "$" 1 &$% 1 %$" 1 $% 1 "$" 2 absolute maximum ratings ( ta = 25 ) parameters symbol limit unit power supply voltage v dd -0.3 to 7.0 *1 v input voltage ( c1, c2 ) v in -0.3 to v dd +0.3 v input current ( c1, c2 ) i in -1.0, +0.1 ma os terminal voltage v os -0.3 to 7.0 v os terminal current i os 5.0 ma power dissipation pd 540 3 2 mw storage temperature range t stg -55 to 150 *1. not to exceed pd *2. reduced by 5.40mw for each increase in ta of 1 over 25 mounted on 70mm 4 70mm 4 1.6mm glass-epoxy pcb recommended operating condition parameters symbol min. typ. max. unit power supply voltage vdd 2.9 3.0 5.5 v operating temperature range topr -30 - 130 3/8 temperature accuracy ( unless otherwise specified, v dd = 3.0v ) parameter symbol limit unit conditions min. typ. max. thermostat ( temperature switch ) detection temperature accuracy ta c c - 0 5 4.0 5 5.0 ta = - 3 0 6 115 ta = 6 130 detection temperature hysteresis thys 7.5 10.0 12.5 analog output vtemp temperature accuracy ttemp - - 5 3.5 ta = 3 0 electrical characteristics ( unless otherwise specified, v dd = 3.0v, ta = 25 ) parameter symbol limit unit conditions min. typ. max. supply current idd - 16.0 20.0 ua c1, c2 = 3.0v analog output vtemp output voltage vtemp 1.716 1.753 1.790 v ta = 3 0 vtemp temperature sensitivity vse -10.28 -10.68 -11.08 mv/ ta = -30 to 100 vtemp load regulation vtemprl - - 1 mv difference of iout : 0ua / 2ua os output open drain os leakage current il - - 1.0 ua os : 5.0v os output voltage vol - - 0.4 v iinos = 1.2ma c1, c2 input l voltage vil gnd - 0.6 v input h voltage vih 2.4 - vdd v radiation hardiness is not designed. package outline ssop6 ( unit mm ) lot no. product type 5 6 4/8 7 8 pin no. pin name function comment 1 c2 detection temperature setting refer to 2/7 page for the temperature set. ( temperature / output format table ) 2 gnd ground 3 vtemp output voltage in inverse proportion to the temperature ( typ. -10.68mv/ ) set the open state or connect high impedance input node. 4 vdd power supply 5 c1 detection temperature setting refer to 2/7 page for the temperature set. ( temperature / output format table ) 6 os digital thermostat output open drain type use the pull-up resistor over 10k 9 . equivalence circuit c1, c2 os vtemp block diagram vdd vdd gnd please dont connect the pull-down resistor please connect the pull-up resistor over 10k . gnd os c1, c2 vdd gnd vtemp c2 v te m p gnd os : 1 ' % , vref / / ; 7 < out . c1 5/8 functional diagram ( ex. detection temperature 100 ) analog output voltage ( vtemp ) [v] os output voltage ( vos ) [v] 1.0 1 vos vtemp@30 ( 1.753v typical ) temperature sensitivity ( -10.68mv/ typical ) temperature hysteresis ( 10 typical ) 110 90 70 50 10 130 -30 30 -10 -50 temperature [ ] 110 90 70 50 10 130 -30 30 -10 -50 temperature [ ] 1.5 2.0 2.5 3.0 0 0.5 6/8 reference data " % " % " % " ',%.&- =>=? 7>(? fig1. vtemp voltage vs. temperature (temperature sensitivity) fig2. supply current vs. supply voltage fig3. vtemp voltage vs. supply voltage 1 "" 1 &% 1 %" 1 % 1 "" 1&% 1%" 1 % " % " ',% 7 >(? @= > =? fig4. vtemp voltage vs. output current "$" "$% $" $% $" $% '$" 1-" 1," " ," -" " ." >? = >=? "$" "$% $" $% $" $% '$" " ',%.&- =>=? = >=? "$" "$% $" $% $" $% '$" " % " % " % 7> (? =>=? fig5. os output voltage vs. load current vdd=3v, ta=25 vdd=3v, ta=25 ta = 2 5 ta = 2 5 vdd=3v 7/8 caution on use a(b8c d ; 8 an excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down de vices, thus making impossible to iden tify breaking mode such as a short circuit or an open circuit. if any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physica l safety measures including the use of fuses, etc. a# )c make setting of the potential of the gnd terminal so th at it will be maintained at the minimum in any operating state. 3) pin short and mistake fitting when mounting the ic on the pcb, pay attention to the orientation of the ic. if there is a placement mistake, the ic may be burned up. ,a 8 c < c be noted that using ics in the strong electric field can malfunction them. %a c e8 8f * * 8< f * 8cg f c 88 cc 888bc $e8 c $ product designations (selecting a mod el name when ordering) b rohm model package type tr = reel-wound embossed taping part number d f1 20 t r 0g 8/8 catalog no.08t170a '08.6 rohm ? |
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