STMPS2242MTR

Product Overview

• Category: Power Management IC
• Use: Voltage Supervisor and Reset Generator
• Characteristics: Low-power, high-accuracy, small package size
• Package: 16-pin TSSOP
• Essence: Provides voltage monitoring and reset generation functions for microcontrollers and other digital systems
• Packaging/Quantity: Tape and reel packaging, 2500 units per reel

Specifications

• Supply Voltage Range: 1.8V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Voltage Options: 2.63V, 3.08V, 4.38V, 4.63V
• Reset Timeout Period Options: 140ms, 560ms, 1120ms, 2240ms
• Quiescent Current: 1.5µA (typical)
• Power-On Reset Delay: 20ms (typical)

Pin Configuration

The STMPS2242MTR has a 16-pin TSSOP package with the following pin configuration:

1. VDD: Supply voltage input
2. GND: Ground reference
3. MR: Manual reset input
4. RESET: Reset output
5. RSTO: Reset timeout period selection
6. VTH: Reset threshold voltage selection
7. NC: No connection
8. NC: No connection
9. NC: No connection
10. NC: No connection
11. NC: No connection
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below the specified threshold
• Provides a manual reset input for immediate system reset
• Offers multiple options for reset threshold voltage and timeout period to suit different applications
• Low quiescent current ensures minimal power consumption
• Power-on reset delay prevents premature system operation during power-up

Advantages and Disadvantages

Advantages: - High accuracy in voltage monitoring - Wide supply voltage range allows compatibility with various systems - Small package size saves board space - Multiple options for reset threshold voltage and timeout period enhance flexibility

Disadvantages: - Limited pin configuration options due to the 16-pin package size - No built-in protection features against voltage spikes or transients

Working Principles

The STMPS2242MTR operates by continuously monitoring the supply voltage connected to the VDD pin. When the voltage falls below the selected threshold, the device generates a reset signal on the RESET pin. The reset signal remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The STMPS2242MTR is widely used in various applications where reliable voltage monitoring and reset generation are critical. Some of the common application fields include:

1. Microcontroller-based systems
2. Industrial automation equipment
3. Automotive electronics
4. Consumer electronics
5. Medical devices
6. Internet of Things (IoT) devices

Detailed and Complete Alternative Models

1. MAX823: Voltage supervisor and reset generator IC from Maxim Integrated.
2. TPS3808: Precision voltage supervisor and watchdog timer from Texas Instruments.
3. ADM6315: Microprocessor supervisory circuit from Analog Devices.
4. MCP101: Voltage supervisor with manual reset input from Microchip Technology.
5. LTC2910: Dual-supply monitor and reset generator from Linear Technology.

These alternative models offer similar functionality to the STMPS2242MTR and can be considered as alternatives based on specific application requirements.

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