SP809
SP809 is 3 Pin Microprocessor Supervisor Circuit manufactured by Maxlinear.
DESCRIPTION
The SP809 is a low power mic roproc essor (μP) supervisory circuit used to monitor power supplies in μP and digital systems.
It provides applications with benefits of circuit reliability and low cost by eliminating ext ernal ponents. 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.
The SP809 was designed with a reset parator to help identify invalid signals, which last less than 140ms. Low supply current (1μA) makes SP809 ideal for port able equipment.
The SP809 is available in a 3 pin SOT-23 pac kage.
3 Pin Microprocessor Supervisor Circuit
R e v. 2.0.3
APPLICATIONS
- Portable Electronic Devices
- Electrical Power Meters
- Digital Still Cameras
- µP Power Monitoring
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
Part Number SP809N SP809
Output Type Open Drain Active Low
Push-Pull Low
TYPICAL APPLICATION DIAGRAM
Fig. 1: SP809 Application Diagram 1
3 Pin Microprocessor Supervisor Circuit
ABSOLUTE MAXIMUM RATINGS
The se are stress ratings only and functional operat i on o f the de vice at the se ratings or any othe r above those indicated in the operation sections of th e s pe ci fi cat i ons be low is not implied. Ex posu re t o a bsol ut e m ax im um rating conditions for e xtended periods of time may af fe ct re liability.
VCC -0.3V to 6.5V R ESET, RESET -0.3V to VCC+0.3V Output Current (RESET) 20m A Powe r Dissipation (TA=70°C) 320m W Junction Tempe rature 125°C Storage Tempe rature -65°C to 150°C
OPERATING RATINGS
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