LTC2903CS6-D1#TRMPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Supply Monitor
• Characteristics: Low Voltage, Precision, Adjustable Thresholds
• Package: SOT-23-6
• Essence: Monitors power supply voltages and generates reset signals
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: Adjustable from 0.4V to 2.048V in 50mV steps
• Reset Timeout Period: Adjustable from 10ms to 640ms in 10ms steps
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 8µA typical

Pin Configuration

The LTC2903CS6-D1#TRMPBF has a total of 6 pins arranged as follows:

```

---

| | --| VCC GND |-- Pin 1: Ground (GND) --| TH RST |-- Pin 2: Reset Output (RST) --| ADJ VCC |-- Pin 3: Supply Voltage (VCC) --| GND GND |-- Pin 4: Ground (GND) --| VIN GND |-- Pin 5: Input Voltage (VIN) --| GND GND |-- Pin 6: Ground (GND) |___________| ```

Functional Features

• Monitors input voltage and compares it with adjustable thresholds
• Generates reset signals based on the monitored voltage levels
• Adjustable threshold voltage and reset timeout period for flexibility
• Low quiescent current for power efficiency
• Wide supply voltage range for compatibility

Advantages and Disadvantages

Advantages: - Precise monitoring of power supply voltages - Adjustable thresholds allow customization for different applications - Low quiescent current minimizes power consumption - Small package size enables space-saving designs

Disadvantages: - Limited reset timeout period options - Not suitable for high voltage applications

Working Principles

The LTC2903CS6-D1#TRMPBF is designed to monitor power supply voltages in various applications. It compares the input voltage (VIN) with adjustable threshold voltages (TH) set by the user. When the input voltage falls below the programmed threshold, the reset output (RST) is asserted, indicating a power failure or an out-of-range condition.

The device operates within a wide supply voltage range of 1.6V to 5.5V, making it compatible with a variety of systems. The threshold voltage can be adjusted using the ADJ pin, allowing customization for specific voltage levels required by the application.

To ensure flexibility, the reset timeout period can also be adjusted using external capacitors connected to the RST pin. This allows users to fine-tune the duration for which the reset signal remains active after the input voltage returns to normal.

Detailed Application Field Plans

The LTC2903CS6-D1#TRMPBF finds applications in various fields where reliable power supply monitoring is crucial. Some potential application areas include:

1. Embedded Systems: Used to monitor power supply voltages in microcontroller-based systems, ensuring proper operation and preventing data corruption during power fluctuations.
2. Industrial Automation: Provides voltage monitoring in industrial control systems, enabling timely shutdowns or alarms in case of power supply abnormalities.
3. Telecommunications: Ensures continuous operation of communication equipment by generating reset signals when power supply voltages deviate from acceptable levels.
4. Automotive Electronics: Monitors power supply voltages in automotive applications, protecting sensitive electronic components from voltage fluctuations and ensuring reliable operation.

Detailed and Complete Alternative Models

1. LTC2903CS6-D2#TRMPBF: Similar to LTC2903CS6-D1#TRMPBF but with different threshold voltage options.
2. LTC2903CS6-D3#TRMPBF: Another variant with additional features such as adjustable hysteresis and watchdog timer functionality.
3. LTC2903CS6-D4#TRMPBF: Offers extended temperature range for applications requiring operation in harsh environments.

These alternative models provide similar functionality with slight variations to cater to specific requirements of different applications.

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