LTC1699EMS8-81#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: The LTC1699EMS8-81#TRPBF is a precision voltage reference and supervisory circuit designed for use in various electronic applications.

Characteristics: - Precision voltage reference - Supervisory circuit - Small package size (MSOP-8) - Low power consumption - Wide operating temperature range - High accuracy

Package: MSOP-8 (Mini Small Outline Package)

Essence: The LTC1699EMS8-81#TRPBF is an essential component in electronic devices that require precise voltage references and reliable supervision.

Packaging/Quantity: The LTC1699EMS8-81#TRPBF is typically packaged in reels, with 2500 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 1.25V ± 1%
• Quiescent Current: 50µA (typical)
• Operating Temperature Range: -40°C to 85°C
• Accuracy: ±1% (maximum)
• Power Supply Rejection Ratio: 70dB (typical)
• Watchdog Timer Timeout Period: 1.6s (typical)

Pin Configuration

The LTC1699EMS8-81#TRPBF features the following pin configuration:

```

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| | --| VOUT GND|-- --| VIN RESET|-- --| VCC WDI|-- |___________| ```

• VOUT: Output voltage pin
• GND: Ground pin
• VIN: Input voltage pin
• RESET: Reset output pin
• VCC: Power supply pin
• WDI: Watchdog input pin

Functional Features

1. Precision Voltage Reference: The LTC1699EMS8-81#TRPBF provides a stable and accurate 1.25V reference voltage, ensuring precise voltage regulation in electronic circuits.

2. Supervisory Circuit: It includes a watchdog timer that monitors the system's operation and generates a reset signal if necessary, enhancing system reliability.

3. Low Power Consumption: With a quiescent current of only 50µA, the LTC1699EMS8-81#TRPBF minimizes power consumption, making it suitable for battery-powered applications.

4. Wide Operating Temperature Range: The IC can operate reliably in a temperature range from -40°C to 85°C, making it suitable for various environmental conditions.

Advantages and Disadvantages

Advantages: - High accuracy and stability - Small package size allows for space-saving designs - Low power consumption extends battery life - Wide operating temperature range ensures versatility

Disadvantages: - Limited output voltage options - Not suitable for high-voltage applications

Working Principles

The LTC1699EMS8-81#TRPBF operates by comparing the input voltage (VIN) with the internal precision reference voltage. It generates an accurate output voltage (VOUT) of 1.25V ± 1% regardless of the input voltage fluctuations. The supervisory circuit continuously monitors the system's operation through the watchdog input (WDI). If the system fails to toggle the WDI within the specified timeout period, the RESET pin is activated, triggering a system reset.

Detailed Application Field Plans

The LTC1699EMS8-81#TRPBF finds applications in various fields, including:

1. Power Management Systems: It can be used in voltage regulators, power supplies, and battery management systems to ensure stable and accurate voltage references.

2. Embedded Systems: The supervisory circuitry of the LTC1699EMS8-81#TRPBF makes it suitable for use in microcontrollers, ensuring reliable system operation and preventing lock-ups.

3. Industrial Control Systems: It can be employed in industrial automation, motor control, and instrumentation systems to provide precise voltage references and supervision.

4. Automotive Electronics: The wide operating temperature range of the LTC1699EMS8-81#TRPBF makes it suitable for automotive applications such as engine control units (ECUs) and electronic control modules (ECMs).

Detailed and Complete Alternative Models

1. LT6657: Precision voltage reference with a wider output voltage range and higher accuracy.
2. MAX6126: Ultra-low noise, high-precision voltage reference suitable for sensitive analog circuits.
3. LM4040: Low-cost, low-power precision voltage reference available in various package options.

These alternative models offer similar functionality to the LTC1699EMS8-81#TRPBF and can be considered based on specific application requirements.

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