LTC2936IGN

Product Overview

Category: Integrated Circuits (ICs)

Use: The LTC2936IGN is a versatile integrated circuit designed for power supply monitoring and sequencing applications. It provides precise control and monitoring of multiple power supplies in various electronic systems.

Characteristics: - Monitors up to 6 power supply inputs - Programmable undervoltage and overvoltage thresholds - Adjustable power-on and power-off delays - Fault detection and reporting capabilities - Wide operating voltage range - Low quiescent current consumption

Package: The LTC2936IGN is available in an 8-pin plastic dual in-line package (PDIP). This package offers good thermal performance and ease of integration into different circuit designs.

Essence: The essence of the LTC2936IGN lies in its ability to ensure reliable and controlled power supply operation in complex electronic systems. By monitoring and sequencing power supplies, it helps prevent potential damage to sensitive components and ensures proper system functionality.

Packaging/Quantity: The LTC2936IGN is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 2.7V to 16V
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 20µA (typical)
• Number of Power Supply Inputs: 6
• Programmable Threshold Range: 0.4V to 5V
• Power-On Delay Range: 1ms to 10s
• Power-Off Delay Range: 1ms to 10s

Detailed Pin Configuration

The LTC2936IGN features the following pin configuration:

1. GND: Ground reference for the IC.
2. VIN1: Input voltage for power supply 1.
3. VIN2: Input voltage for power supply 2.
4. VIN3: Input voltage for power supply 3.
5. VIN4: Input voltage for power supply 4.
6. VIN5: Input voltage for power supply 5.
7. VIN6: Input voltage for power supply 6.
8. VCC: Supply voltage for the IC.

Functional Features

1. Power Supply Monitoring: The LTC2936IGN monitors the input voltages of up to 6 power supplies, ensuring they remain within specified thresholds.
2. Sequencing Control: It provides programmable power-on and power-off delays, allowing controlled sequencing of power supplies to prevent voltage spikes or other undesirable effects during system startup or shutdown.
3. Fault Detection and Reporting: The IC can detect faults such as undervoltage, overvoltage, and power supply sequencing errors. It provides fault reporting through an open-drain output pin.
4. Flexible Configuration: The thresholds and timing parameters can be easily programmed using external resistors and capacitors, providing flexibility to adapt to different system requirements.

Advantages and Disadvantages

Advantages: - Precise monitoring and control of multiple power supplies - Programmable thresholds and delays for customization - Fault detection and reporting capabilities enhance system reliability - Wide operating voltage range accommodates various applications - Low quiescent current consumption minimizes power wastage

Disadvantages: - Limited to monitoring and sequencing up to 6 power supplies - Requires external components for configuration

Working Principles

The LTC2936IGN operates by continuously monitoring the input voltages of the connected power supplies. It compares these voltages with the programmable thresholds set by the user. If any voltage falls outside the specified range, a fault condition is detected and reported.

During power-on and power-off sequences, the IC controls the timing of each power supply's activation or deactivation. This ensures that the voltages rise or fall in a controlled manner, preventing any potential damage to the system.

Detailed Application Field Plans

The LTC2936IGN finds applications in various electronic systems where precise power supply monitoring and sequencing are critical. Some of the common application fields include:

1. Telecommunications: Ensuring reliable power supply operation in communication equipment such as routers, switches, and base stations.
2. Industrial Control Systems: Monitoring and controlling power supplies in industrial automation systems, PLCs (Programmable Logic Controllers), and motor drives.
3. Medical Devices: Maintaining stable power supply conditions in medical instruments, patient monitoring systems, and diagnostic equipment.
4. Automotive Electronics: Sequencing power supplies in automotive control units, infotainment systems, and advanced driver-assistance systems (ADAS).
5. Consumer Electronics: Power management in devices like smartphones, tablets, gaming consoles, and home entertainment systems.

Detailed and Complete Alternative Models

1. LTC2937IGN: Similar to LTC2936IGN but with additional features for more complex power supply monitoring and sequencing requirements.
2. **MAX160