EC95809 3-Pin Microprocessor Reset Monitor SDescription Features The EC95809 is a cost-effective system ● Precision VCC Monitor for 2.8V, 3.0V, 3.3V, and supervisor Integrated Circuit (IC) designed to monitor VCC in digital and mixed signal systems and provide a warning signal when the system power supply is out of working range, and a reset signal to the host processor when necessary. No external components are required. 5.0V Supplies ● 150msec typical delay for RESET Output ● RESET Output Guaranteed to VCC=1.0V ● Low 20μA Supply Current ● VCC Transient Immunity ● No External Components The reset output is driven active within 20μsec ● Small SOT-23 Package and TO-92 Package of VCC falling through the reset voltage threshold. ● Wide Operating Temperature: -40°C to 85°C Reset is maintained active for a typical delay of ● 100% Lead (Pb)-Free 150msec after VCC rises above the reset threshold. The EC95809 has an active-low RESET output. The output of the EC95809 is guaranteed valid down to VCC=1V in most applications. Please see Application application section for more details. The EC95809 is optimized to reject fast transient glitches on the VCC line. Low supply current of 18μA (VCC=3.3V) makes these devices suitable for battery powered applications. The ● Computers/Portable Devices ● Embedded systems ● Battery powered equipment ● Critical µP power supply monitoring output voltages range from 1.7V to 4.5V in 100mV increments. Standard voltage versions are 2.63, 2.93, 3.08, 4.0, 4.38, and 4.63V. Pin Configuration E-CMOS Corp. (www.ecmos.com.tw) Application Diagram Page 1 of 6 4J20N-Rev.F003 EC95809 3-Pin Microprocessor Reset Monitor PIN DESCRIPTION: Symbol Description GND Ground RESET RESET output remains low while Vcc is below the reset voltage threshold and for 150msec(typ) after Vcc rises above reset threshold Vcc Supply Voltage (typ.) Ordering Information Marking Information(SOT23-3L) Device Voltage Marking Package Detection Information Type 4.63V S809La EC95809NLB1R Remarks 1. Starting with S,a bar on top of S is for production year 2013,and underlined S EC95809NMB1R 4.38V is for 2014.The next character is S809Ma marked .on top for 2015 and underlined EC95809NJB1R 4.00V for 2016.The naming pattern continues S809Ja SOT23-3L EC95809NTB1R 3.08V S809Ta with consecutive characters for last year. th 2. the 5 character denotes a suffix for VCC threshold. EC95809NSB1R 2.93V 3. The last character is the week code S809Sa (A-Z:1-26；a-z:27-25). *A dot on top right corner is for lead-free. EC95809NRB1R E-CMOS Corp. (www.ecmos.com.tw) 2.63V S809Ra Non-dot on top right corner is for Green. Page 2 of 6 4J20N-Rev.F003 EC95809 3-Pin Microprocessor Reset Monitor Marking Information(TO92-3L) Device Voltage Marking Package Detection Information Type Remarks 1. Starting with underlined 0, a bar is for production year 2012. The next bar is mark on top of 9 is for year 2013. The next bar is mark on bottom of 9 is for year 2014. The next bar is mark on top of EC95809NZA6R 2.30V 809Zf TO92-3L Z is year for 2015. The naming pattern continues with consecutive characters for later years. 2. f is the week of production. The big character of A~Z is for the week of 1~26, and small a~z is for the week of 27~52. Absolute Maximum Ratings(1) Parameter Symbol Value Units Input Voltage VCC 5.5 V Output Voltage RESET -0.3 to (VCC + 0.3) V 20 mA Input Current Output Current IOUT Power Dissipation PD 20 Internally Limited Output Short Circuit Duration mA (3) Infinite Thermal Resistance, Junction-to-Ambient ΘJA 230 °C/W Operating Temperature Range TA -40 ~ 85 ℃ 260 °C Lead Temperature (Soldering, 10 sec.) Junction Temperature TJ 0 to +125 °C Storage Temperature TS -60 to +150 °C Operating Rating(2) E-CMOS Corp. (www.ecmos.com.tw) Parameter Symbol Value Units Supply Input Voltage VCC +2.0V to +5.5 V Junction Temperature TJ 0 to +125 °C Page 3 of 6 4J20N-Rev.F003 EC95809 3-Pin Microprocessor Reset Monitor Electrical Characteristics Vcc=5V for L/M/J ;3.3V for T/S ;3.0V for R ,TA = 25°C, unless otherwise specified. Symbol Parameter VCC Input Voltage ICC Supply Current VTH Condition Reset Threshold Typ Max Unit 2.0 5.5 V -- 13 A EC95809NL-4.63V 4.514 4.63 4.746 EC95809NM-4.38V 4.271 4.380 4.490 EC95809NJ-4.00V 3.900 4.000 4.100 EC95809NT-3.08V 3.003 3.080 3.157 EC95809NS-2.93V 2.857 2.930 3.003 EC95809NR-2.63V 2.564 2.630 2.696 EC95809NZ-2.30V 2.194 2.250 2.306 -- 30 -- ppm/°C -- 20 -- μsec -- 150 500 msec Reset Threshold Temperature Coefficient Min (4) VCC to Reset Delay VCC = VTH to (VTH – 100mV) Reset Active Timeout Period V VOL RESET Output Voltage Low ISINK = 3.2mA -- -- 0.4 V VOH RESET Output Voltage High ISOURCE = 800μA 0.8VCC -- -- V Note 1: Exceeding the absolute maximum rating may damage the device. Note 2: The device is not guaranteed to function outside its operating rating. Note 3: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(MAX) = (TJ(MAX) – TA)/ΘJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. See “Thermal Consideration” section for details Note 4: RESET threshold temperature coefficient is the worst case voltage change divided by the total temperature range. E-CMOS Corp. (www.ecmos.com.tw) Page 4 of 6 4J20N-Rev.F003 EC95809 3-Pin Microprocessor Reset Monitor Typical Performance Characteristics Vout is maintained to <1V if waveform Vout is maintained to 1.2V if waveform period is less than 56 sec. E-CMOS Corp. (www.ecmos.com.tw) period is longer than 160 sec. Page 5 of 6 4J20N-Rev.F003 EC95809 3-Pin Microprocessor Reset Monitor OUTLINE DRAWING SOT-23 C J H B DIMN A B C D E F G H J K L D A E G F K L DIMENSIONS INCHES MM MIN MAX MIN MAX 0.110 0.047 0.083 0.035 0.070 0.018 0.015 0.0005 0.034 0.003 - 0.120 0.055 0.104 0.040 0.080 0.024 0.020 0.004 0.040 0.007 0.027 2.80 1.20 2.10 0.89 1.78 0.45 0.37 0.013 0.887 0.085 - 3.04 1.40 2.64 1.03 2.05 0.60 0.51 0.10 1.02 0.18 0.69 OUTLINE DRAWING TO-92 A DIMN B D A B E F G H J K E G F H K J E-CMOS Corp. (www.ecmos.com.tw) Page 6 of 6 DIMENSIONS INCHES MM MIN MAX MIN MAX 0.175 0.170 0.500 0.016 0.045 0.095 0.080 0.125 0.205 0.210 0.610 0.021 0.055 0.105 0.105 0.165 4.445 4.318 12.70 0.407 1.143 2.413 2.032 3.175 5.207 5.334 15.50 0.533 1.397 2.667 2.667 4.191 4J20N-Rev.F003