TC51 M 1 A Voltage Detector with Output Delay Features General Description Precise Detection Thresholds: 2.0% The TC51 is a very low power, open drain output, CMOS voltage detector with built-in delay. It is Small Package: 3-Pin SOT-23A particularly well-suited for battery powered applications Low Supply Current: Typ. 1 A because of its extremely low 1 A operating current and Wide Detection Range: 1.6V to 6.0V small surface-mount packaging. Each part is laser- Wide Operating Voltage Range: 0.7V to 10V trimmed to the desired threshold voltage, which can be Built-in Delay Circuit: 50msec to 200 msec specified from 1.6V to 6.0V. The standard built-in output delay is 50msec-200msec. Open-Drain Output The device includes a comparator, low-current high- Applications precision reference, laser-programmed voltage divider, hysteresis circuit and output driver with digital delay Battery Voltage Monitoring timer. Microprocessor Reset In operation, the TC51s output (V ) remains in the System Brown-out Protection OUT logic HIGH state as long as V is greater than the IN specified threshold voltage (V -). When V falls Device Selection Table DET IN below V -, the output is immediately driven to a logic DET LOW. V remains LOW until V rises above V - Part Number Package Temp. Range OUT IN DET by an amount V , whereupon it returns to a logic HYST TC51-xxxxxxxxxx 3-Pin SOT-23A -40C to +85C HIGH after expiration of the built-in delay time. Other output voltages are available. Please contact Microchip Functional Block Diagram Technology Inc. for details. V IN Package Type V OUT 3-Pin SOT-23A V Delay IN Circuit 3 V REF TC51 V SS 1 2 V V OUT SS NOTE: 3-Pin SOT-23A is equivalent to the EIAJ SC-59. 2002 Microchip Technology Inc. DS21429B-page 1TC51 *Stresses above those listed underAbsolute Maximum 1.0 ELECTRICAL Rating may cause permanent damage to the device. These CHARACTERISTICS are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the Absolute Maximum Ratings* operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for Input Voltage ........................................................+12V extended periods may affect device reliability. Output Current ....................................................50mA Output Voltage: Open Drain ..........(V 0.3V) to 12V SS Power Dissipation (T 70C): A 3-Pin SOT-23A ...........................................240mW Operating Temperature Range.............-40C to +85C Storage Temperature Range ..............-65C to +150C TC51 ELECTRICAL SPECIFICATIONS Electrical Characteristics: T = 25C, unless otherwise specified. A Symbol Parameter Min Typ Max Units Test Conditions V Operating Voltage 0.7 10.0 V (V -) = 1.6 to 6.0V IN DET I Quiescent Current 0.9 2.6 AV = 1.5V SS IN 1.0 3.0 V = 2.0V IN 1.3 3.4 V = 3.0V IN 1.6 3.8 V = 4.0V IN 2.0 4.2 V = 5.0V IN V - Threshold Voltage V x 0.98 V 0.5% V x 1.02 V Note 1 DET T T T V Hysteresis Voltage V - x 0.02 V - x 0.05 V - x 0.08 V HYST DET DET DET I Output Current 2.2 mA V = 0.5V, V = 1.0V OUT OL IN 7.7 V = 2.0V IN 10.1 V = 3.0V IN 11.5 V = 4.0V IN 13.0 V = 5.0V IN T Delay Time 50 200 msec Standard DLY T (V -) Tempco of (V -) 100 ppm/C-40C T 85C C DET DET A Note 1: V is the factory programmed threshold voltage setting. T DS21429B-page 2 2002 Microchip Technology Inc.