Description

The NCP803SN308T1 is a system supervisor circuit that is designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. It is a cost-effective electronic component and requires no external components. The device is optimized to reject fast transient glitches on the VCC line and has a low supply current of 0.5 μA when VCC is 3.2 V, making it suitable for battery-powered applications.

Specifications and features

• Precision VCC Monitor for 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, and 5.0 V Supplies
• Precision Monitoring Voltages from 1.2 V to 4.9 V Available in 100 mV Steps
• Four Guaranteed Minimum Power-On Reset Pulse Width Available (1 ms, 20 ms, 100 ms, and 140 ms)
• RESET Output Guaranteed to VCC = 1.0 V
• Low Supply Current
• VCC Transient Immunity
• No External Components
• Wide Operating Temperature: −40°C to 105°C
• Pb−Free Packages are Available

Application Scenarios

The NCP803SN308T1 is commonly used in computers, embedded systems, battery-powered equipment, and critical microprocessor power supply monitoring.

Comparison

• Cost-effective
• No external components required
• Optimized to reject fast transient glitches on the VCC line
• Low supply current of 0.5 μA (VCC = 3.2 V)
• Wide operating temperature range (-40°C to 105°C)

• None identified