Specifications

9. Circuit descriptions and List of abbreviationsEN 46
DVP320
9
.1.5 Layout diagrams and ordering numbers (top view)
9
.2 NCP302
9
.2.1 Description
The NCP302 and NCP303 series are second generation ultra–low current voltage detectors that contain a programmable time delay
generator. These devices are specifically designed for use as reset controllers in portable microprocessor based systems where
extended battery life is paramount.
Each series features a highly accurate under voltage detector with hysteresis and an externally programmable time delay generator.
This combination of features prevents erratic system reset operation.
The NCP302 series consists of complementary output devices that are available with either an active high or active low reset. The
NCP303 series has an open drain N–channel output with an active low
reset output.
9
.2.2 Features
• Quiescent Current of 0.5 µA Typical
• High Accuracy Under Voltage Threshold of 2.0%
• Externally Programmable Time Delay Generator
• Wide Operating Voltage Range of 0.8 V to 10 V
• Complementary or Open Drain Output
• Active Low or Active High Reset
9
.2.3 Typical Applications
• Microprocessor Reset Controller
• Low Battery Detection
• Power Fail Indicator
• Battery Backup Detection