LM809M3X-4.63/NOPB Power Path Management IC Supervisory Circuits 3-Pin Microprocessor Reset Circuits
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,power management integrated circuit
LM809M3X-4.63/NOPB Power Path Management IC Supervisory Circuits 3-Pin Microprocessor Reset Circuits
1 Features
- Precision Monitoring of Supply Voltages – Available Threshold Options:
2.63 V, 2.93 V, 3.08 V, 4.38 V, 4.63 V
-
Superior Upgrade to MAX809 and MAX810
-
Fully Specified Over Temperature
-
140-ms Minimum Power-On Reset Pulse Width, 240-ms Typical
-
– Active-Low RESET Output (LM809)
-
– Active-High RESET Output (LM810)
-
-
Ensured RESET Output Valid for VCC ≥ 1 V
-
Low Supply Current, 15-μA Typical
-
Power Supply Transient Immunity
2 Applications
-
Factory Automation
-
Building Automation
-
Programmable Logic Control
-
Renewable Energy
-
Microprocessor Systems
-
Computers
-
Controllers
-
Intelligent Instruments
-
Portable/Battery-Powered Equipment
-
Automotive
3 Description
The LM809 and LM810 microprocessors supervisory circuits can be used to monitor the power supplies in microprocessor and digital systems. They provide a reset to the microprocessor during power-up, power- down and brown-out conditions.
The function of the LM809 and LM810 are to monitor the VCC supply voltage, and assert a reset signal whenever this voltage declines below the factory- programmed reset threshold. The reset signal remains asserted for 240 ms after VCC rises above the threshold. The LM809 has an active-low RESET output, while the LM810 has an active-high RESET output.
Seven standard reset voltage options are available, suitable for monitoring 5-V, 3.3-V, and 3-V supply voltages.
With a low supply current of only 15 μA, the LM809 and LM810 are ideal for use in portable equipment.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
LM809, LM810 |
SOT-23 (3) |
2.92 mm × 1.30 mm |
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