Ultra-Low Quiescent Current Voltage Detector EC95808 Features General Description ● Ultra-Low Quiescent Current 1.0 µA (Typ.) The EC95808 series are highly accurate, ultra-low current ● High Accuracy of Detection Voltage ±2% consumption voltage detectors, developed by CMOS process. ● Hysteresis Width 5% VDET (Typ.) Two output forms N-channel open-drain and CMOS output are ● Detection Voltage 1.6V to 6.0V (0.1V Step) available.The device is ideal for battery powered portable devices ● Operating Voltage Range 1.5V to 6.0V which require low current consumption. ● N-ch Open Drain and CMOS Output ● SOT23-3L, SC82-4Land SC70-3L Packages ● RoHS Compliant and 100% Lead (Pb)-Free The EC95808 consists of a comparator, a voltage reference unit, a resistor divider, an output driver, and a hysteresis circuit. The and Green (Halogen Free with Commercial detection voltage is fixed internally with ±2.0% accuracy by Standard) advanced trimming technology. Applications The devices are available in SOT23-3L,SC82-4L and Microprocessor Reset Circuitry SC70-3L packages. Memory Battery Back-up Circuits Power-on Reset Circuits Power Failure Detection System Battery Life and Charge Voltage Monitors Typical Application Circuit Ordering Information EC95808 X XX X X X R R:Tape & Reel Circuit Type Pin Type: SC82-4L: I/S N：Normal Vout t ype: N=N-ch Open dr ain C=CMOS Package Type： B1=SOT23-3L C1=SC70-3L C7=SC82-4L Detection Voltage Code(Exam.) 16=1.6V 17=1.7V 18=1.8V ： E-CMOS Corp. (www.ecmos.com.tw) Page 1 of 14 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector EC95808 Pin Description Marking Information E-CMOS Corp. (www.ecmos.com.tw) Page 2 of 14 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector EC95808 1 Represents Products Series(See Note1) Mark 2 Vout Type Voltage(V) Mark Vout Type Voltage(V) A CMOS 0.X H N-ch 0.X B CMOS 1.X J N-ch 1.X C CMOS 2.X K N-ch 2.X D CMOS 3.X L N-ch 3.X E CMOS 4.X M N-ch 4.X F CMOS 5.X N N-ch 5.X G CMOS 6.X P N-ch 6.X Represents decimal number of detect voltage(See Note 2) 3 、 4 Mark Voltage(V) Mark Voltage(V) 0 X.0 5 X.5 1 X.1 6 X.6 2 X.2 7 X.7 3 X.3 8 X.8 4 X.4 9 X.9 Represents Production Date Code Note： * There are two under-lines on 4th & 5th digit for Green package. * There are no under-lines on 4th & 5th digit for Pb-Free package. E-CMOS Corp. (www.ecmos.com.tw) Page 3 of 14 4F17N Rev. F001 EC95808 Ultra-Low Quiescent Current Voltage Detector Absolute Maximum Rating Parameter Symbol Ratings Units Input Voltage VIN to GND VIN 6.0 V Output Voltage, CMOS VOUT GND~VIN+0.3V V Output Voltage, N-ch GND~6V Output Current IOUT 50 mA Junction Temperature TJ +155 °C PD 310 mW Power Dissipation SOT23-3L SC82-4L 250 SC70-3L 250 Operating Ambient Temperature TOPR -40 ~ +85 °C Storage Temperature TSTG -55 ~ +150 °C +260 °C Lead Temperature (soldering, 10sec) Note： * The power dissipation values are based on the condition that junction temperature TJ and ambient temperature TA difference is 100°C. * Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and function operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum -rated conditions for extended periods may affect device reliability. Electrical Characteristics(TA=25°C, unless otherwise noted.) Symbol Parameter Test Conditions Min Typ Unit 6.0 V VIN Operating Voltage VDET Detection Voltage VDET* VDET 0.98 VDET* 1.02 V VHYS Hysteresis Width VDET* VDET* VDET* 0.03 0.05 0.08 V 1.0 µA IQ IOUT ILEAK TC 1.5 Max Quiescent Current VIN=5V Output Current N-ch Output VIN=2V 3 7 VIN=3V 5 10 VIN=5V 7 13 Leakage Current N-ch, VIN=VOUT=5V Temperature Coefficient -40°C<T A< +85°C Response Time E-CMOS Corp. (www.ecmos.com.tw) Page 4 of 14 100 3.0 mA 0.1 µA 350 ppm/ °C 200 µS 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector EC95808 Function Block Diagram CMOS Output N-ch Open drain Output E-CMOS Corp. (www.ecmos.com.tw) Page 5 of 14 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector EC95808 Typical Operating Characteristics (EC95808C22C7IR tested, TA=+25℃, unless otherwise noted.) (1) Output Voltage vs. Input Voltage (2) Supply Current v.s Input Voltage (3) Detect Voltage v.s Amibent (4) Supply Current v.s Amibent Temperature E-CMOS Corp. (www.ecmos.com.tw) Temperature Page 6 of 14 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector (5) Start-up Voltage Waveform E-CMOS Corp. (www.ecmos.com.tw) EC95808 (6) Shutdown Voltage Waveform Page 7 of 14 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector EC95808 Detail Description Basic Operation For EC95808C CMOS Active low output: (1) When the input voltage VIN is higher than the release voltage VREL (VREL = VDET + VHYS), the N-ch MOS is OFF and P-ch MOS is ON to provide VIN at the output. Since NMOS is OFF, the comparator input voltage is VIN x (R2+R3) / (R1+R2+R3) When the VIN goes below the VREL, VIN keeps at the output since VIN remains above the detection voltage VDET. The difference between VREL and VDET is the hysteresis range. (2) When the VIN goes below the VDET, the N-ch MOS is ON and P-ch MOS is OFF to provide GND level at the output. At this time NMOS is ON, the comparator input voltage is VIN x R2 / (R1+R2) (3) When the VIN falls below the minimum opera-ting voltage, the output becomes undefined changed to VIN if the output is pulled up to VIN. (4) When the VIN rises above the minimum opera-ting voltage, the GND level appears at the output. The GND level keeps at the output even when VIN goes above the detection voltage VDET, as long as it doesn’t exceed the release voltage VREL. E-CMOS Corp. (www.ecmos.com.tw) Page 8 of 14 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector EC95808 (5) When the VIN rises above the release voltage VREL, the N-ch MOS is OFF and P-ch MOS is ON to provide VIN at the output. Oscillation Notice When a resistor is connected between the input voltage and the input pin VIN with CMOS output configuration, oscillation may occur due to voltage drop at RIN. The voltage drop is VDROP = RIN x IOUT When the VIN input voltage rises above the release voltage, the detector output voltage increases and the load current IOUT will flow at RLOAD. A voltage drop is produced at RIN. The voltage drop will also lead to a fall in the input voltage at VIN pin. When the VIN input voltage falls below the detection voltage, output voltage falls to GND and the output current will cease. Then the voltage drop at RIN will disappear, and the VIN input voltage will rise to commence release operation. Oscillation may occur with this release detection-release repetition. It’s recommended not to use the CMOS configuration when a resistor RIN is connected between VIN input pin and the power source. Please use N-channel open drain configuration when RIN is required. E-CMOS Corp. (www.ecmos.com.tw) Page 9 of 14 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector EC95808 Power-on Reset Circuit A power-on reset circuit example using EC95808N is shown in the figure. Resistor R should be 75 kΩ or less to avoid oscillation. Diode D instantaneously discharges the charge stored in the capacitor C at the power falling. Diode D can be removed when the delay of the falling time is not important. Change of Detection Voltage For EC95808N N-channel open drain output configuration, the detection voltage can be changed with resistance dividers as shown in the figure. Detection voltage is changed to VDET x (R1+R2) / R2 Hysteresis width is also changed to\ VHYS x (R1+R2) / R2 Resistor R1 should be 75 kΩ or less to avoid oscillation. The detection voltage can also be changed with diodes as shown in the figure. E-CMOS Corp. (www.ecmos.com.tw) Page 10 of 14 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector EC95808 Detection voltage becomes VF1 + VF2 + VDET Mechanical Dimensions OUTLINE DRAWING SOT23-3L E-CMOS Corp. (www.ecmos.com.tw) Page 11 of 14 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector EC95808 Mechanical Dimensions OUTLINE DRAWING SC82-4L(Pin Type I) E-CMOS Corp. (www.ecmos.com.tw) Page 12 of 14 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector EC95808 Mechanical Dimensions OUTLINE DRAWING SC82-4L(Pin Type S) E-CMOS Corp. (www.ecmos.com.tw) Page 13 of 14 4F17N Rev. F001 Ultra-Low Quiescent Current Voltage Detector EC95808 Mechanical Dimensions OUTLINE DRAWING SC70-3L E-CMOS Corp. (www.ecmos.com.tw) Page 14 of 14 4F17N Rev. F001