CAT808 Low-Power Precision Voltage Detector Description The CAT808 is a high−precision voltage detector designed for monitoring single cell and multi−cell batteries. Voltage detection thresholds between 2.0 V and 3.5 V are provided with 0.1 V resolution and ±3.0% accuracy. The CAT808 open−drain output is active low until the VDD voltage exceeds the detection threshold. A low hysteresis is built into the device to minimize output “chatter”, while VDD passes through the detection threshold, and the output transitions high. After the CAT808 asserts the output high condition, it continues to monitor VDD until it drops below the detection threshold, when the output goes low until VDD once again exceeds the detection threshold. http://onsemi.com 5 1 TSOT−5 TD SUFFIX CASE 419AE Features • • • • • • • MARKING DIAGRAM Ultra Low Current Consumption 2.4 mA Accurate Voltage Detection Threshold Fine Voltage Detection Threshold Resolution Open Drain Output (Active Low) Industrial Temperature Range −40°C to +85°C 5−pin TSOT−23 These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant = Specific Device Code = Production Year = Production Month PIN CONNECTIONS OUT Battery−Powered Systems Power Supply Monitoring Handheld and Portable Equipment Processor Supervisor Reset VDD CAT808 10 kW OUT GND NC VDD GND NC (Top View) ORDERING INFORMATION IN Battery Voltage TL Y M 1 Applications • • • • TLYM See detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. DC−DC CONVERTER SHDN OUT GND Note: The value of the pull−up resistor is not critical Figure 1. Typical Application © Semiconductor Components Industries, LLC, 2011 September, 2011 − Rev. 6 1 Publication Order Number: CAT808/D CAT808 Table 1. ABSOLUTE MAXIMUM RATINGS Parameters Ratings Units Temperature under Bias −55 to +125 °C Storage Temperature −65 to +150 °C −2.0 to VDD + 2.0 V Voltage on any Pin with Respect to GND (Notes 1, 2) VDD with Respect to GND Lead Soldering temperature (10 seconds) Power Dissipation −2.0 to 7.0 V +300 °C 250 mW Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. The Minimum DC input voltage is −0.5 V. During transitions, inputs may undershoot to −2.0 V for periods of less than 20 ns. Maximum DC voltage on output pins is VCC +0.5 V, which may overshoot to VCC +2.0 V for periods of less than 20 ns. 2. Latch−up protection is provided for stresses up to 100 mA on all pins from −1 V to VCC +1 V. Table 2. RECOMMENDED OPERATING CONDITIONS Parameters VDD Operating Temperature Range Ratings Units +1.2 to +6.0 V −40 to +85 °C Table 3. DC ELECTRICAL CHARACTERISTICS (TA = −40°C to +85°C, VDD = 1.2 V to 6.0 V) Symbol Parameter Conditions Min Typ Max Units VDET Detection Voltage CAT808Nxxx−25 2.43 2.5 2.57 V CAT808Nxxx−27 2.62 2.7 2.78 CAT808Nxxx−32 3.12 3.2 3.28 CAT808Nxxx−35 3.42 3.5 3.58 VDD = 4.0 V − 2.4 5 VDD = 5.0 V − 3.5 7 VDD = 6.0 V − 5 10 VDD = 1.2 V 0.6 1.4 − VDD = 2.4 V IDD Current Consumption VDS = 0.5 V mA IOUT Output Sink Current 2.9 5 − ILEAK Output Leakage Current VDS = 5.0 V, VDD = 5.0 V − − 1 mA TPHL/LH Response Time – − − 60 ms DVDET DTA • VDET(typ) Detection Voltage Temperature Coefficient (Note 3) − ±10 ±100 ppm/°C 3. The temperature change ratio in the detection voltage [ppm/°C] is calculated by using the following equation: DV DET DT A @ V DET(typ) 1, 000, 000[ppmń oC] http://onsemi.com 2 mA CAT808 Operation – Voltage Detector OUT VDD The CAT808 has an active low output that asserts (pulls low) when the supply voltage drops below the detection threshold voltage (VDET). The open−drain output requires an external pull−up resistor between the output pin and the supply voltage (as shown in the typical application diagram). On power−up, OUT is held active low until the supply voltage (VDD) rises above VDET. While VDD is above VDET, OUT stays high until VDD drops below VDET, then OUT once again goes low. VOLTAGE REFERENCE Figure 2. Block Diagram VDD* VDET(MAX) VDET(MAX) VDET VDET VDET(MIN) VDET(MIN) GND TPLH VOH TPHL OUT Slews with VDD OUT * Voltage of VDD below 1 volt will not be able to maintain low output. Figure 3. Timing Diagram Table 4. PIN FUNCTIONS Pin Function VDD Voltage Input and Power Supply GND Ground Pin OUT Active Low Open Drain output NC No Connect, the pin is electrically open http://onsemi.com 3 CAT808 TYPICAL ELECTRICAL OPERATING CHARACTERISTICS (Typical values at TA = 25°C) 2.710 4 2.705 3 VDET (V) SUPPLY CURRENT (mA) 5 2 2.700 1 0 2 3 4 5 2.695 −40 6 65 100 TEMPERATURE (°C) Figure 4. VDD Supply Current vs. VDD Supply Voltage Figure 5. VDET Detection Voltage vs. Temperature 10 TPLH 10 IOUT (mA) RESPONSE TIME (ms) 30 SUPPLY VOLTAGE (V) 100 1 0.1 0.01 −5 TPHL 0.001 0.01 0.1 1 10 8 −40°C 6 +25°C +90°C 4 2 0 100 1.0 1.5 2.0 LOAD CAPACITANCE (nF) VDD (V) Figure 6. Response Time vs. Load Capacitance Figure 7. IOUT Transistor Output Current vs. VDD Supply Voltage http://onsemi.com 4 2.5 CAT808 PACKAGE DIMENSIONS TSOT−23, 5 LEAD CASE 419AE−01 ISSUE O SYMBOL D MIN NOM A e E1 MAX 1.00 A1 0.01 0.05 0.10 A2 0.80 0.87 0.90 b 0.30 c 0.12 0.45 0.15 D 2.90 BSC E 2.80 BSC E1 1.60 BSC e 0.95 TYP E L 0.30 L1 0.40 0.20 0.50 0.60 REF L2 0.25 BSC 0º θ 8º TOP VIEW A2 A b q L A1 c L1 SIDE VIEW END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-193. http://onsemi.com 5 L2 CAT808 Ordering Information Table 5. ORDERING INFORMATION Specific Device Marking Package Temperature Range Lead Finish Shipping† CAT808NTDI−25GT3 TL TSOT−23−5 Industrial NiPdAu 3000 Units / Tape & Reel CAT808NTDI−27GT3 TL TSOT−23−5 Industrial NiPdAu 3000 Units / Tape & Reel CAT808NTDI−32GT3 TL TSOT−23−5 Industrial NiPdAu 3000 Units / Tape & Reel CAT808NTDI−35GT3 TL TSOT−23−5 Industrial NiPdAu 3000 Units / Tape & Reel Orderable Part Number †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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This literature is subject to all applicable copyright laws and is not for resale in any manner. PUBLICATION ORDERING INFORMATION LITERATURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: [email protected] N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5773−3850 http://onsemi.com 6 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative CAT808/D