LTC4352IDD#PBF

Product Overview

Category: Integrated Circuits (ICs)

Use: The LTC4352IDD#PBF is a power management IC designed to protect and control the power supply in various electronic systems. It offers features that ensure safe and reliable operation, making it suitable for a wide range of applications.

Characteristics: - Overvoltage and undervoltage protection - Reverse current blocking - Adjustable overcurrent threshold - Fast response time - Low quiescent current - Wide input voltage range

Package: The LTC4352IDD#PBF is available in a 10-lead DFN (Dual Flat No-Lead) package. This compact and thermally efficient package allows for easy integration into space-constrained designs.

Essence: The essence of LTC4352IDD#PBF lies in its ability to provide robust power management solutions by protecting sensitive components from voltage spikes, reverse currents, and overcurrent conditions.

Packaging/Quantity: The LTC4352IDD#PBF is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 4V to 80V
• Maximum Continuous Current: 5A
• Quiescent Current: 50µA
• Reverse Current Threshold: Adjustable from 1mA to 100mA
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The LTC4352IDD#PBF features the following pin configuration:

1. VIN: Input voltage pin
2. GATE: Gate drive output pin
3. GND: Ground pin
4. VOUT: Output voltage pin
5. FB: Feedback pin
6. OV: Overvoltage threshold adjustment pin
7. UV: Undervoltage threshold adjustment pin
8. OCSET: Overcurrent threshold adjustment pin
9. EN: Enable pin
10. NC: No connection

Functional Features

• Overvoltage Protection: The LTC4352IDD#PBF monitors the input voltage and shuts off the power path when it exceeds a user-defined threshold, protecting downstream components from damage.
• Undervoltage Protection: It also provides undervoltage protection by disconnecting the load when the input voltage falls below a certain threshold, preventing unreliable operation.
• Reverse Current Blocking: The IC prevents reverse current flow from the output to the input, safeguarding against potential damage caused by backfeeding.
• Adjustable Overcurrent Threshold: The overcurrent threshold can be adjusted using the OCSET pin, allowing customization based on specific application requirements.
• Fast Response Time: The LTC4352IDD#PBF reacts quickly to voltage transients and fault conditions, minimizing the risk of damage to connected devices.
• Low Quiescent Current: With a low quiescent current of 50µA, the IC minimizes power consumption during standby or idle periods.
• Wide Input Voltage Range: The LTC4352IDD#PBF supports a wide input voltage range of 4V to 80V, making it suitable for various power supply systems.

Advantages and Disadvantages

Advantages: - Comprehensive protection features ensure safe and reliable operation. - Adjustable overcurrent threshold allows customization. - Compact DFN package enables easy integration into space-constrained designs. - Wide input voltage range enhances versatility. - Fast response time minimizes the risk of damage to connected devices.

Disadvantages: - Limited maximum continuous current of 5A may not be sufficient for high-power applications. - Requires external components for complete power management solution.

Working Principles

The LTC4352IDD#PBF operates as a smart power manager by monitoring the input voltage, output voltage, and current flow. It utilizes a combination of MOSFETs and control circuitry to provide the desired protection and control functions.

When the input voltage exceeds the user-defined overvoltage threshold, the LTC4352IDD#PBF shuts off the power path by turning off the internal MOSFET. This protects downstream components from excessive voltage levels. Similarly, when the input voltage falls below the undervoltage threshold, the IC disconnects the load to prevent unreliable operation.

The reverse current blocking feature ensures that no current flows from the output to the input, preventing potential damage caused by backfeeding. The adjustable overcurrent threshold allows customization based on specific application requirements, providing flexibility in protecting against excessive current flow.

Detailed Application Field Plans

The LTC4352IDD#PBF finds applications in various fields where reliable power management is crucial. Some of the detailed application field plans include:

1. Automotive Electronics: The IC can be used in automotive systems to protect sensitive electronic components from voltage spikes and reverse currents, ensuring safe and reliable operation.
2. Industrial Control Systems: It can be employed in industrial control systems to safeguard critical equipment from overvoltage and underv