CAT808 Low-Power Precision Voltage Detector FEATURES DESCRIPTION Ultra Low Current Consumption 2.4 µA 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. Accurate Voltage Detection Threshold Fine Voltage Detection Threshold Resolution Open Drain Output (Active Low) 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. Industrial temperature range -40°C to +85°C 5-pin TSOT-23 RoHS compliant package APPLICATIONS Battery-Powered Systems 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. Power Supply Monitoring Handheld and Portable Equipment Processor Supervisor Reset For Ordering Information details, see page 6. PIN CONFIGURATION TYPICAL APPLICATION IN Thin SOT-23 5-Lead OUT 1 VDD Battery Voltage 5 NC OUT VDD 2 GND 3 CAT808 10kΩ DC-DC CONVERTER SHDN GND OUT GND 4 NC Note: The value of the pull-up resistor is not critical © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice 1 Doc. No. MD-3024 Rev. F CAT808 (1) ABSOLUTE MAXIMUM RATINGS Parameters Ratings Units Temperature under Bias -55 to +125 ºC Storage Temperature -65 to +150 ºC -2.0 to VDD + 2.0 V -2.0 to 7.0 V Lead Soldering temperature (10 seconds) +300 ºC Power Dissipation 250 mW Ratings Units +1.2 to +6.0 V -40 to +85 ºC (2)(3) Voltage on any Pin with Respect to GND VDD with Respect to GND RECOMMENDED OPERATING CONDITIONS Parameters VDD Operating Temperature Range DC ELECTRICAL CHARACTERISTICS TA = -40ºC to +85ºC, VDD = 1.2V to 6.0V Symbol VDET IDD Parameter Detection Voltage Current Consumption Conditions Min Typ. Max CAT808Nxxx-25 2.43 2.5 2.57 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 0.6 2.9 - 1.4 5 - 1 - - 60 IOUT Output Sink Current ILEAK Output Leakage Current VDD=1.2 V VDD=2.4 V VDS = 5.0 V, VDD = 5.0 V Response Time – TPHL/LH ΔVDET ΔTA ● VDET(typ) VDS = 0.5 V Detection Voltage (4) Temperature Coefficient - Units V µA mA µA µs ±10 ±100 ppm/ºC Notes: (1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only and functional operation of the devices at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability. (2) 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. (3) Latch-up protection is provided for stresses up to 100 mA on all pins from -1 V to VCC +1 V. (4) The temperature change ratio in the detection voltage [ppm/°C] is calculated by using the following equation: ΔVDET × 1,000,000[ppm /º C] ΔTA • VDET (typ) Doc. No. MD-3024 Rev. F 2 © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice CAT808 OPERATION – VOLTAGE DETECTOR BLOCK DIAGRAM 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. OUT VDD VOLTAGE REFERENCE TIMING DIAGRAM VDD* VDET(MAX) VDET(MAX) VDET VDET VDET(MIN) GND VDET(MIN) TPLH VOH TPHL OUT Slews with VDD OUT * Voltage of VDD below 1 volt will not be able to maintain low output. 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 © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice 3 Doc. No. MD-3024 Rev. F CAT808 TYPICAL ELECTRICAL OPERATING CHARACTERISTICS Typical values at TA = 25°C. VDD Supply Current vs. VDD Supply Voltage VDET Detection Voltage vs. Temperature 2.71 5 Supply Current (μA) 4 2.705 VDET (V) 3 2 2.7 1 0 2 3 4 5 6 2.695 -40 Supply Voltage (V) -5 30 65 100 Temperature (ºC) Response time vs. Load Capacitance IOUT Transistor Output Current vs. VDD Supply Voltage 100 10.00 8.00 1 +25ºC (mA) TPLH 10 6.00 IOUT Response time [ms] -40ºC 4.00 +90ºC 0.1 2.00 TPHL 0.01 0.001 0.00001 0.01 0.000001 0.1 0.0001 1 0.001 10 0.01 0.00 1.00 100 0.1 Load capacitance [nF] Doc. No. MD-3024 Rev. F 1.50 2.00 2.50 VDD (V) 4 © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice CAT808 PACKAGE OUTLINE DRAWINGS TSOT-23 5-Lead (TD) (1)(2) SYMBOL D MIN NOM A e 1.00 A1 0.01 0.05 0.10 A2 0.80 0.87 0.90 0.15 0.20 b 0.30 c 0.12 D E1 E MAX 0.45 2.90 BSC E 2.80 BSC E1 1.60 BSC e 0.95 TYP L 0.30 0.40 L1 0.60 REF L2 0.25 BSC θ 0º 0.50 8º TOP VIEW A2 A b θ L A1 c L1 SIDE VIEW L2 END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC specification MO-193. © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice 5 Doc. No. MD-3024 Rev. F CAT808 EXAMPLE OF ORDERING INFORMATION Prefix Device # CAT Optional Company ID Suffix 808N TD Product Number 808N I -27 Lead Finish G: NiPdAu Temperature Range I = Industrial (-40°C to 85°C) Voltage Detection Level -25: 2.5V Package TD: TSOT-23-5 Tape & Reel T: Tape & Reel 3: 3000 Reel -35: 3.5V Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard finish is NiPdAu. (3) The device used in the above example is a CAT808NTDI-27GT3 (TSOT-23-5, Industrial Temperature, 2.7 V Detection Level, NiPdAu, Tape & Reel, 3000 Reel). (4) For additional detection voltage, package and temperature options, please contact your nearest ON Semiconductor Sales office. ORDERING INFORMATION Orderable Part Number Package Detection Voltage [V] Top Marking CAT808NTDI-25GT3 TSOT-23-5 2.50 MVym CAT808NTDI-27GT3 TSOT-23-5 2.70 MVym CAT808NTDI-32GT3 TSOT-23-5 3.20 MVym CAT808NTDI-35GT3 TSOT-23-5 3.50 MVym * Part number is not exactly the same as the “Example of Ordering Information” shown above. For part numbers marked with hyphens in the orderable part number. * there are two Notes: (1) ym – Year and Month Code. Doc. No. MD-3024 Rev. F 6 © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice CAT808 REVISION HISTORY Date Rev. Description 7-Nov-06 A Initial Issue 10-May-07 B Update Features Update Description Update DC Electrical Characteristics Update Example of Ordering Information Update Top Marking 5-Nov-08 C Added MD– to document number Change logo and fine print to ON Semiconductor 17-Mar-09 D Update Package Outline Drawing - SOT-89 3-Lead (TF) 13-Jul-09 E Update Ordering Information table F Update DC Electrical Characteristics Remove SOT-89 Package Update Example of Ordering Information Update Ordering Information 17-May-10 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. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. 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] © 2010 SCILLC. All rights reserved. Characteristics subject to change without notice 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 7 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative Doc. No. MD-3024 Rev. F