LTC2922CF-2.5#TRPBF

Overview

Category: Integrated Circuit (IC)
Use: Voltage Supervisor
Characteristics: Low Voltage, Adjustable Threshold, Power-On Reset
Package: 16-Lead TSSOP
Essence: Monitors and controls the voltage level of a system
Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Voltage Range: 1.6V to 5.5V
• Threshold Accuracy: ±1.5%
• Reset Timeout Period: Adjustable from 100ms to 10s
• Operating Temperature Range: -40°C to +85°C
• Supply Current: 20µA (typical)

Pin Configuration

The LTC2922CF-2.5#TRPBF has a 16-lead TSSOP package with the following pin configuration:

1. GND (Ground)
2. RESET (Reset Output)
3. MR (Manual Reset Input)
4. VCC (Supply Voltage)
5. TH (Threshold Adjust)
6. GND
7. GND
8. GND
9. GND
10. GND
11. GND
12. GND
13. GND
14. GND
15. GND
16. VOUT (Voltage Output)

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below a certain threshold.
• The threshold voltage can be adjusted using an external resistor connected to the TH pin.
• Provides a manual reset input (MR) for immediate system reset.
• Offers a power-on reset delay to ensure stable operation during power-up.

Advantages

• Wide operating voltage range allows compatibility with various systems.
• Adjustable threshold provides flexibility in setting the desired voltage level for reset.
• Low supply current minimizes power consumption.
• Small package size enables space-efficient integration into electronic devices.

Disadvantages

• Limited reset timeout period may not be suitable for applications requiring longer delays.
• Manual reset input requires external circuitry for proper functionality.

Working Principles

The LTC2922CF-2.5#TRPBF is a voltage supervisor IC that continuously monitors the supply voltage of a system. When the voltage falls below the threshold set by the TH pin, the IC generates a reset signal on the RESET pin. This signal can be used to initiate a system reset or perform other necessary actions.

The threshold voltage can be adjusted by connecting an external resistor to the TH pin. This allows customization of the voltage level at which the reset signal is triggered. The IC also provides a manual reset input (MR) that can be used to force an immediate system reset, overriding the voltage monitoring function.

During power-up, the LTC2922CF-2.5#TRPBF incorporates a power-on reset delay to ensure stable operation. This delay prevents premature generation of the reset signal during the initial power-up phase, allowing the system to reach a reliable operating state.

Detailed Application Field Plans

The LTC2922CF-2.5#TRPBF is commonly used in various electronic systems where voltage monitoring and control are critical. Some specific application fields include:

1. Microcontrollers: Ensuring proper operation by monitoring the supply voltage and initiating a reset if necessary.
2. Power Management Systems: Protecting sensitive components from undervoltage conditions and preventing damage.
3. Battery-Powered Devices: Monitoring battery voltage to prevent excessive discharge and extend battery life.
4. Industrial Control Systems: Providing reliable reset signals to maintain system integrity and prevent data corruption.
5. Automotive Electronics: Safeguarding critical systems by monitoring voltage levels and triggering appropriate actions.

Detailed and Complete Alternative Models

1. LTC2922CF-3.3#TRPBF: Similar to LTC2922CF-2.5#TRPBF, but with a fixed threshold voltage of 3.3V.
2. LTC2922CF-1.8#TRPBF: Similar to LTC2922CF-2.5#TRPBF, but with a fixed threshold voltage of 1.8V.
3. LTC2922CF-ADJ#TRPBF: Adjustable threshold voltage version with a wider voltage range (0.6V to 5.5V).

These alternative models offer similar functionality and characteristics, allowing users to choose the most suitable option based on their specific requirements.

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