STMPS2272MTR

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 Accuracy: ±1.5%
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Quiescent Current: 3µA (typical)
• Power-On Reset Delay: 100ms (typical)

Pin Configuration

The STMPS2272MTR features 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. VOUT: Output voltage reference
6. VREF: Reference voltage input
7. CT: Capacitor connection for reset timeout period adjustment
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 supply voltage and generates a reset signal when it falls below a specified threshold
• Adjustable reset timeout period allows customization based on system requirements
• Manual reset input for immediate system reset
• Power-on reset delay ensures stable operation during power-up

Advantages and Disadvantages

Advantages: - Low-power consumption extends battery life in portable devices - High accuracy ensures reliable voltage monitoring - Small package size saves board space - Adjustable reset timeout period offers flexibility

Disadvantages: - Limited number of available pins for additional functionalities - Not suitable for high-voltage applications

Working Principles

The STMPS2272MTR operates by continuously monitoring the supply voltage using an internal voltage reference. When the voltage drops below a preset threshold, the device generates a reset signal to initiate a system reset. The reset timeout period can be adjusted using an external capacitor connected to the CT pin. Additionally, a manual reset input allows for immediate system reset when required. The power-on reset delay ensures that the device remains stable during power-up.

Application Field Plans

The STMPS2272MTR is commonly used in various applications where voltage monitoring and reset generation are critical. Some potential application fields include:

1. Microcontroller-based systems
2. Embedded systems
3. Industrial automation
4. Consumer electronics
5. Automotive electronics
6. Medical devices

Alternative Models

• MAX809: Voltage supervisor with adjustable reset timeout period
• TPS3808: Precision voltage monitor with manual reset input
• ADM708: Microprocessor supervisory circuit with power-on reset delay

These alternative models offer similar functionality and can be considered as alternatives to the STMPS2272MTR based on specific application requirements.

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