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NCP400 Datasheet(PDF) 2 Page - ON Semiconductor |
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NCP400 Datasheet(HTML) 2 Page - ON Semiconductor |
2 / 14 page NCP400 http://onsemi.com 2 TYPICAL OPERATION CIRCUIT Figure 1. Power Supply and Reset Circuit for Microprocessor and/or Memory Chip VIN NCP400 VOUT RESET CD GND C VDD ENABLE GND 1 mF CIN RESET 1 mF COUT Microprocessor / Memory Chip DelayTime : ( Dt) + (C 0.97 V) 1.56 mA PIN DESCRIPTION Pin No. Symbol Description 1 VIN Positive power supply input voltage. 2 ENABLE This input is used to place the device into low–power standby. When this input is pulled low, the device is disabled. If this function is not used, ENABLE should be connected to VIN. 3 RESET Voltage detect output signal. 4 CD Delay capacitor pin. 5 GND Power supply ground. 6 VOUT Voltage regulator output voltage. REPRESENTATIVE BLOCK DIAGRAM Figure 2. Representative Block Diagram − + + Vref CD VIN GND ENABLE Thermal Shutdown Driver w/ Current Limit VOUT RESET ON OFF |
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