LM809M3-4.63

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LM809M3-4.63

+BOM

IC SUPERVISOR 1 CHANNEL SOT23-3

  • メーカーSTマイクロエレクトロニクス

  • メーカー品番 #LM809M3-4.63

  • パッケージ SOT-23-3

  • 在庫状況5381

365 日間品質保証

7*24 日間の品質保証

90-時間単位のサービス保証

1日間のアフターサービス保証

仕様

属性
Package Tape & Reel (TR)
ProductStatus Obsolete
Type Simple Reset/Power-On Reset
NumberofVoltagesMonitored 1
Voltage-Threshold 4.63V
Output Push-Pull, Totem Pole
Reset Active Low
ResetTimeout 140ms Minimum
OperatingTemperature -40°C ~ 105°C (TA)
MountingType Surface Mount
Package/Case TO-236-3, SC-59, SOT-23-3

概要

Description

The LM809M3-4.63 is a precision microprocessor supervisory circuit designed to monitor the supply voltage of digital systems. It ensures reliable operation by providing a reset signal whenever the monitored voltage drops below a specified threshold, in this case, 4.63 volts. This feature is crucial for preventing microprocessor malfunctions during power fluctuations or brownout conditions. The device typically includes an active-low reset output, which remains asserted when the voltage is below the threshold and for a fixed delay period after the voltage returns to normal. The LM809M3-4.63 is known for its low power consumption, making it suitable for battery-operated devices. Its compact size and easy integration into various circuits make it a popular choice for ensuring system stability and reliability. This supervisory circuit is commonly used in applications like embedded systems, microcontroller-based designs, and any digital equipment requiring robust voltage monitoring and reset functionality.

Equivalent

The LM809M3-4.63 is a voltage supervisor or reset IC. Equivalent products include the MAX809 series from Maxim Integrated and the Microchip MCP809 series. Both offer similar functionality, such as monitoring the system voltage and providing a reset signal when it drops below a certain threshold. Always verify pin compatibility and electrical specifications when considering a substitute.

Features

The LM809M3-4.63 is a microprocessor supervisory circuit designed to monitor the power supply voltage in microprocessor systems. Here are its key features:
1. Voltage Monitoring: It specifically monitors the 4.63V voltage threshold, ensuring that the system operates within safe voltage levels.
2. Reset Output: Automatically generates a reset signal when the monitored voltage falls below the threshold, which helps to prevent erratic operations.
3. Manual Reset Input: Includes an input for manual reset, allowing external control to reset the system.
4. Small Package: Available in a compact SOT-23 package, which is ideal for space-constrained applications.
5. Low Power Consumption: Designed to consume minimal power, making it suitable for battery-operated devices.
6. High Accuracy: Provides precise voltage threshold detection to ensure reliable system operation.
7. Temperature Range: Operates over a wide temperature range, typically from -40°C to +85°C, suitable for various environments.
These features make the LM809M3-4.63 an excellent choice for safeguarding microprocessor applications against unexpected power supply issues.

Pinout

The LM809M3-4.63 is a microprocessor supervisory circuit designed to monitor power supplies in microprocessor systems. It has a 3-pin configuration. The pins are typically designated as follows:
1. VCC (Power Supply Input): This pin is connected to the power supply that needs monitoring. It is responsible for detecting when the voltage drops below a pre-defined threshold (4.63V in the case of LM809M3-4.63).
2. GND (Ground): This is the ground reference pin for the device. It should be connected to the system ground.
3. RESET (Active-Low Reset Output): This pin provides the reset signal to the microprocessor. The output remains low when the monitored voltage is below the threshold and for a specified time after the voltage rises above the threshold, ensuring the microprocessor is properly reset.
The primary function of the LM809M3-4.63 is to provide a reliable reset signal to microprocessors during power-up, power-down, and brownout conditions, ensuring stable operation by preventing code execution errors.

Manufacturer

The LM809M3-4.63 is a voltage supervisory IC manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and produces a wide range of analog and embedded processing chips. TI is known for its innovations in electronics, with products used in various applications such as consumer electronics, automotive systems, industrial machinery, and communication devices. The company is headquartered in Dallas, Texas, and is one of the largest semiconductor manufacturers in the world.

Application

The LM809M3-4.63 is a microprocessor supervisory circuit commonly used in applications requiring reliable power management and system monitoring. Its primary function is to monitor the supply voltage and ensure the microprocessor operates within a safe voltage range. It is often employed in embedded systems, automotive electronics, industrial control systems, and consumer electronics to prevent system malfunctions due to undervoltage conditions. By providing a reset signal when the monitored voltage falls below 4.63 volts, it helps in resetting the microprocessor to a known state, ensuring system stability and reliability.

Package

The LM809M3-4.63 is typically available in a SOT-23 package, which is a small-outline transistor package commonly used for surface-mount devices.

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