?2001 fairchild semiconductor corporation www.fairchildsemi.com rev. 1.0.2 features ? detecting against error operations at the power on/off. ? resetting function for the low voltage microprocessor. ? checking low battery description the ka75250/ka75270/ka75290/ka75310/ka75330/ ka75360/ka75390/ka75420/ka75450 prevents error of system from supply voltage below normal voltage level at the time the power on and instantaneous power off in sys- tems. internal block diagram input 1:to-92 3:sot-89 gnd 2:to-92 2:sot-89 out 3:to-92 1:sot-89 v ref input 1:to-92 3:sot-89 gnd 2:to-92 2:sot-89 out 3:to-92 1:sot-89 v ref 1 2 3 ka75xxx voltage detector to-92 1 1. input 2. gnd 3. output
ka75xxx 2 absolute maximum rating (t a =25 c) electrical characteristics (t a =25 c) characteristic symbol value unit supply voltage vcc 0.3 ~ + 15.0 v detecting voltage v det 2.5/2.7/2.9/3.1 3.3/3.6/3.9/4.2/4.5 v hysteresis voltage v hys 50 mv operating temperature t opr - 25 ~ + 85 c storage temperature t stg - 50 ~ + 150 c power dissipation p d 200 mw detecting voltage temperature coefficient ? v det / ? tr l = 200 ? , +0.01 %/ c characteristic symbol test conditions min typ max unit detecting voltage v det ka75250 ka75270 ka75290 ka75310 ka75330 ka75360 ka75390 ka75420 ka75450 2.35 2.55 2.75 2.95 3.15 3.45 3.75 4.05 4.35 2.5 2.7 2.9 3.1 3.3 3.6 3.9 4.2 4.5 2.65 2.85 3.05 3.25 3.45 3.75 4.05 4.35 4.65 v low output voltage v ol r l =200 ? --0.4v output leakage current i lkg v cc =15v - - 0.1 ua hysteresis voltage v hys r l =200 ? 30 50 100 mv detecting voltage temperature coefficient ? v det / ? tr l =200 ? - 0.01 - %/ c circuit current(at on time) i ccl v cc =v det(min) -0.05v - 300 500 ua circuit current(at off time) i cch v cc =5.25v - 30 50 ua threshold operating voltage v th(opr) r l =200 ? , v ol 0.4v - 0.8 1.0 v " l" transmission delay time t ol r l =1.0k ? , c l =100pf 0.6 10 - us " h" transmission delay time t oh r l =1.0k ? , c l =100pf - 15 20 us output current (at on time) i oli v cc =v det(min) -0.05v, t a =25 c 10 20 30 ma output current (at on time) i olii v cc =v det(min) - 0.05v t a = -25 ~ + 85 c 81630ma v ol 0.4v r l =200 ?
ka75xxx 3 test circuit 1. test circuit 2. test circuit 3. ka75xxx input 10u 10v gnd output a1 m + a2 v1 ka75xxx input 10u 10v gnd output a1 m + + a2 v1 0.1u 50v 10u 50v + r l 5v input pulse ka75xxx input gnd output 0.1u 50v 10u 50v + + r l 5v input pulse ka75xxx input gnd output v cc r l led ka75xxx input gnd output v cc r l led ka75xxx input gnd output
ka75xxx 4 application circuit v cc r l ka75xxx input gnd output vcc cpu gnd reset v cc r l ka75xxx input gnd output vcc cpu gnd reset
ka75xxx 5 mechanical dimensions package dimensions in millimeters to-92 0.46 0.10 1.27typ (r2.29) 3.86max [1.27 0.20 ] 1.27typ [1.27 0.20 ] 3.60 0.20 14.47 0.40 1.02 0.10 (0.25) 4.58 0.20 4.58 +0.25 ?.15 0.38 +0.10 ?.05 0.38 +0.10 ?.05
ka75xxx 6 ordering information product number package operating temperature ka75250z to-92 -25 ~ +85 c ka75270z ka75290z ka75310z ka75330z ka75360z ka75390z ka75420z ka75450z
ka75xxx 7
ka75xxx 4/28/01 0.0m 001 stock#dsxxxxxxxx ? 2001 fairchild semiconductor corporation life support policy fairchild?s products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. a critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others.
file:///e|/new/html/ka75330z.html fairchild semiconductor space space space search | parametric | cross reference space product folders and datasheets application notes space space space find products home >> find products >> space space space space products groups space analog and mixed signal discrete interface logic microcontrollers non-volatile memory optoelectronics markets and applications new products product selection and parametric search cross-reference search technical information buy products technical support my fairchild company ka75330z voltage detector (3.3v) related links request samples dotted line how to order products dotted line product change notices (pcns) dotted line support dotted line distributor and field sales representatives dotted line quality and reliability dotted line design tools contents general description | features | product status/pricing/packaging general description the ka75250/270/290/310/33/360/390/420/450 prevents error of system from supply voltage below normal voltage level at the time the power on and instantaneous power off in systems. back to top features l detecting against error operations at the power on/off. l resetting function for the low voltage microprocessor. l checking low battery back to top space datasheet download this datasheet pdf e-mail this datasheet [e- mail] this page print version product status/pricing/packaging product product status package type leads packing method ka75330zbu full production to-92 3 bulk KA75330ZTA full production to-92 3 tape reel back to top file:///e|/new/html/ka75330z.html (1 of 2) [7/26/02 1:48:14 pm]
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