MDT7822 Voltage Detector 1.General Description 4. Pin Function Description MDT7822 is a voltage detector which can generate a low level signal whenever the input voltage (supply voltage) falls below threshold voltage level (2.2v). MDT7822 2. Features ● 1 VDET Low detectable voltage 2.2V 2 VIN 3 VSS Low power consumption ●Built-in hysteresis characteristic ● Pin Name I/O VSS Ground VDET Open Supply voltage Drain detector. Output low if Vin < 2.2V. VIN Input 3. Applications ● ● ● Battery detectors Power checkers Micro-controller reset Function Supply voltage input ORDERING INFORMATION 1 of 2 Device Package MDT7822ST SOT89 2005/10/18 MDT7822 Voltage Detector 5. Electrical Characteristics Min. 2.1 Typ. Max. 2.2 2.3 Unit V 2.2 2.3 2.4 V LBDV hysteresis 0.5 Width -------------------------Ivin No load 1.2 --------------------------Vin Operating Voltage VDET Sink Current VIN=2V 0.1 0.15 V 2 5 7 uA V mA Parameter Low Battery Detect Voltage (LBDV) Test Conditions HI to LOW Detectable Voltage LOW to HI Detectable Voltage 9 6.Application Circuit EXTERNAL COMPONENT : RPU=47K 2 of 2 2005/10/18