LTC2936CUFD#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Supply Monitor and Reset Circuit

Characteristics: - Monitors the power supply voltage and generates a reset signal when the voltage falls below a specified threshold. - Provides a reliable way to ensure proper operation of electronic devices by resetting them in case of power supply issues. - Suitable for use in various applications, including industrial equipment, automotive systems, and consumer electronics.

Package: UFD (Micro Leadframe Package)

Essence: The LTC2936CUFD#PBF is an integrated circuit that combines a voltage monitor and a reset generator into a single package. It offers a compact and efficient solution for power supply monitoring and reset functionality.

Packaging/Quantity: The LTC2936CUFD#PBF is available in a UFD package and is typically sold in reels or tubes containing a specific quantity of units.

Specifications

• Supply Voltage Range: 1.5V to 5.5V
• Threshold Voltage Options: Various options available, allowing customization based on specific application requirements.
• Reset Timeout Period: Adjustable timeout period to control the duration of the reset signal.
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: Low quiescent current consumption for energy-efficient operation.

Pin Configuration

The LTC2936CUFD#PBF features a 10-pin configuration with the following pin assignments:

1. VCC: Power supply input
2. GND: Ground reference
3. MR: Manual reset input
4. RESET: Reset output
5. TH: Threshold voltage selection input
6. CT: Capacitor connection for reset timeout adjustment
7. GATE: Gate output for external MOSFET control
8. FLT: Fault output indicating a power supply fault condition
9. VFB: Feedback voltage output for monitoring purposes
10. NC: No connection (unused pin)

Functional Features

• Power Supply Monitoring: Monitors the input voltage and compares it to the threshold voltage set by the TH pin.
• Reset Generation: Generates a reset signal when the monitored voltage falls below the threshold voltage.
• Manual Reset: Allows for manual reset control through the MR pin.
• Adjustable Timeout Period: The CT pin allows adjustment of the reset timeout period.
• Fault Detection: Detects power supply fault conditions and provides a fault indication through the FLT pin.
• External MOSFET Control: Provides a gate output (GATE) for controlling an external MOSFET.

Advantages and Disadvantages

Advantages: - Integrated solution combining voltage monitoring and reset generation. - Compact package size for space-constrained applications. - Wide operating voltage range allows for versatile use. - Adjustable timeout period for flexibility in reset signal duration. - Fault detection feature enhances system reliability.

Disadvantages: - Limited pin count may restrict the number of additional features that can be integrated. - Not suitable for applications requiring high precision voltage monitoring.

Working Principles

The LTC2936CUFD#PBF operates by continuously monitoring the input voltage and comparing it to the threshold voltage set by the TH pin. When the input voltage falls below the threshold, the circuit generates a reset signal, which can be used to reset the connected electronic device. The reset signal remains active for a user-adjustable timeout period set by the CT pin. Additionally, the circuit detects power supply fault conditions and provides a fault indication through the FLT pin. The GATE pin allows for external MOSFET control, enabling advanced power management capabilities.

Application Field Plans

The LTC2936CUFD#PBF finds application in various fields, including: 1. Industrial Equipment: Ensuring reliable operation of machinery and control systems by monitoring power supply voltage and providing reset functionality. 2. Automotive Systems: Enhancing the safety and reliability of automotive electronics by resetting them in case of power supply issues. 3. Consumer Electronics: Protecting sensitive electronic devices from power supply fluctuations and ensuring proper operation.

Alternative Models

1. LTC2936IUFD#PBF: Similar to LTC2936CUFD#PBF but with an extended operating temperature range (-40°C to +125°C).
2. LTC2936HUFDF#PBF: Higher pin count version with additional features, including adjustable hysteresis and watchdog timer functionality.

(Note: The above alternative models are provided for reference and may have different specifications and pin configurations. Please refer to the respective datasheets for detailed information.)

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