MDT7820 Voltage Detector 4. Pin Function Description 1.General Description MDT7820ST MDT7820 is a voltage detector which can generate a low level signal whenever the input voltage (supply voltage) falls below threshold voltage level (2.0v). 1 2. Features 2 VDET 3 VIN VSS Low detectable voltage 2.0V MDT7820ST23 Low power consumption ●Built-in hysteresis characteristic VIN ● ● 3 1 VDET 3. Applications ● ● ● Battery detectors Power checkers Micro-controller reset 2 Pin Name VSS I/O VSS Function Ground VDET Open Supply voltage Drain detector. Output low if Vin < 2.0V. VIN Input Supply voltage input ORDERING INFORMATION Device Package MDT7820ST SOT89 MDT7820ST23 SOT23 This specification are subject to be changed without notice. Any latest information please preview P.1 2006/11 http;//www.mdtic.com.tw Ver 1.1 MDT7820 Voltage Detector 5. Electrical Characteristics Parameter Low Battery Detect Voltage (LBDV) LBDV hysteresis Width Ivin Vin Operating Voltage VDET Sink Current Test Conditions Min. HI to LOW Detectable Voltage 1.9 Typ. 2.0 Max. 2.1 Unit V LOW to HI Detectable Voltage 2.0 2.1 2.2 V 0.5 0.1 0.15 V 2 5 7 uA V mA --------------------------No load --------------------------VIN=2V 1.2 9 6.Application Circuit & Block Diagram This specification are subject to be changed without notice. Any latest information please preview P.2 2006/11 http;//www.mdtic.com.tw Ver 1.1 MDT7820 Voltage Detector EXTERNAL COMPONENT : RPU=47K This specification are subject to be changed without notice. Any latest information please preview P.3 2006/11 http;//www.mdtic.com.tw Ver 1.1