LM5068MM-3

Product Overview

Category: Integrated Circuit (IC)

Use: The LM5068MM-3 is a voltage supervisor and reset IC designed for monitoring the power supply voltage of electronic systems. It ensures proper system operation by generating a reset signal when the voltage falls below a specified threshold.

Characteristics: - Monitors power supply voltage - Generates reset signal - Low quiescent current consumption - Wide operating voltage range - Adjustable reset threshold - Small form factor

Package: The LM5068MM-3 is available in a miniature 8-pin VSSOP package, which offers a compact and space-saving solution for applications with limited board space.

Essence: The essence of the LM5068MM-3 lies in its ability to provide reliable voltage monitoring and reset functionality, ensuring the stable operation of electronic systems.

Packaging/Quantity: The LM5068MM-3 is typically sold in reels or tubes containing a quantity of 250 units per package.

Specifications

• Operating Voltage Range: 1.6V to 5.5V
• Reset Threshold Voltage Range: 0.4V to 4.625V (adjustable)
• Quiescent Current: 10µA (typical)
• Power-On Reset Delay: 200ms (typical)
• Temperature Range: -40°C to +125°C

Pin Configuration

The LM5068MM-3 features the following pin configuration:

┌───┬───┐ │ 1 │ 2 │ ───┼───┼───┼─── │ 3 │ 4 │ ───┼───┼───┼─── │ 5 │ 6 │ ───┼───┼───┼─── │ 7 │ 8 │ └───┴───┘

1. VDD: Power supply voltage input
2. GND: Ground reference
3. MR: Manual reset input (active-low)
4. RESET: Reset output
5. TH: Threshold voltage adjustment pin
6. NC: No connection
7. NC: No connection
8. NC: No connection

Functional Features

• Voltage monitoring: The LM5068MM-3 continuously monitors the power supply voltage and compares it to the adjustable threshold voltage.
• Reset generation: When the monitored voltage falls below the threshold, the LM5068MM-3 generates a reset signal to initiate system reset or recovery.
• Manual reset: The manual reset input allows for an external reset signal to override the internal monitoring circuitry.
• Adjustable threshold: The threshold voltage can be adjusted using an external resistor, providing flexibility in setting the desired voltage level for triggering the reset signal.

Advantages and Disadvantages

Advantages: - Low quiescent current consumption helps minimize power consumption in battery-powered applications. - Wide operating voltage range enables compatibility with various power supply voltages. - Small form factor allows for space-efficient integration into compact electronic systems. - Adjustable reset threshold provides customization options for different voltage requirements.

Disadvantages: - Lack of built-in hysteresis may result in potential oscillations near the threshold voltage. - Limited number of pins may restrict the availability of additional features or functionalities.

Working Principles

The LM5068MM-3 operates by comparing the power supply voltage with the adjustable threshold voltage set by the TH pin. When the power supply voltage drops below the threshold, the internal circuitry triggers the RESET pin, generating a reset signal. This signal can be used to initiate system reset or recovery processes. The manual reset input (MR) allows for an external reset signal to override the internal monitoring circuitry.

Application Field Plans

The LM5068MM-3 finds applications in various electronic systems where reliable voltage monitoring and reset functionality are crucial. Some potential application fields include:

1. Microcontrollers and microprocessors
2. Embedded systems
3. Industrial automation equipment
4. Power management systems
5. Automotive electronics
6. Consumer electronics

Alternative Models

For users seeking alternative options, the following models offer similar functionality to the LM5068MM-3:

1. LM809: Voltage supervisor with adjustable threshold and manual reset.
2. MAX823: Low-power voltage monitor with reset output.
3. TPS3808: Precision voltage supervisor with adjustable threshold and manual reset.

These alternative models provide comparable features and can be considered based on specific application requirements.

Word count: 536 words