SP809EK-L-3-1/TR Datasheet PDF - Exar Corporation

GENERAL DESCRIPTION
The SP809/SP810 are low power microprocessor (μP) supervisory circuits used to monitor power supplies in μP and digital systems.
They provide applications with benefits of circuit reliability and low cost by eliminating external components. If the VCC supply voltage falls below preset threshold then a reset signal is asserted for at least 140ms after VCC has risen above the reset threshold.

FEATURES
• Ultra Low Supply Current 1µA (typ)
• Guaranteed Reset valid to VCC = 0.9V
• 140ms Power-On Reset Pulse Width
• Internally Fixed Threshold 2.3V, 2.6V, 2.9V, 3.1V, 4.4V, 4.6V
• 1.5% Voltage Threshold Tolerance
• 3 Pin SOT-23 Package

APPLICATIONS
• Portable Electronic Devices
• Electrical Power Meters
• Digital Still Cameras
• µP Power Monitoring