LTC4221IGN#PBF

Product Overview

Category

LTC4221IGN#PBF belongs to the category of integrated circuits (ICs) used in power management systems.

Use

This IC is primarily used for power supply and protection applications, providing features such as hot-swapping, overvoltage protection, and current limiting.

Characteristics

• Hot-swap controller with power limiting capability
• Overvoltage protection up to 80V
• Current limiting with adjustable threshold
• Wide operating temperature range (-40°C to 85°C)
• Low quiescent current consumption

Package

LTC4221IGN#PBF is available in a 16-pin SSOP (Shrink Small Outline Package) package.

Essence

The essence of LTC4221IGN#PBF lies in its ability to ensure safe and reliable power management by protecting sensitive components from voltage spikes and current surges during power supply operations.

Packaging/Quantity

This IC is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: -0.3V to 80V
• Operating Temperature Range: -40°C to 85°C
• Quiescent Current: 50µA (typical)
• Overvoltage Protection Threshold: Adjustable, up to 80V
• Current Limit Threshold: Adjustable, up to 5A

Detailed Pin Configuration

1. VCC: Power supply input
2. GND: Ground reference
3. FLT: Fault output indicator
4. OV: Overvoltage fault output
5. ILIM: Current limit threshold adjustment
6. UVLO: Undervoltage lockout threshold adjustment
7. EN: Enable pin for device operation
8. PWRGD: Power good output
9. SENSE+: Positive sense input for current monitoring
10. SENSE-: Negative sense input for current monitoring
11. VCC2: Secondary power supply input
12. GND2: Ground reference for secondary power supply
13. FLT2: Fault output indicator for secondary power supply
14. OV2: Overvoltage fault output for secondary power supply
15. ILIM2: Current limit threshold adjustment for secondary power supply
16. UVLO2: Undervoltage lockout threshold adjustment for secondary power supply

Functional Features

1. Hot-Swapping: Allows for safe insertion and removal of power sources without disrupting the operation of the system.
2. Overvoltage Protection: Safeguards sensitive components by detecting and preventing voltage spikes above a user-defined threshold.
3. Current Limiting: Protects the system from excessive current flow by limiting the maximum current allowed through the circuit.
4. Power Good Output: Provides an indication of the status of the power supply, ensuring that only stable and reliable power is delivered to the system.

Advantages and Disadvantages

Advantages

• Enables safe hot-swapping of power sources
• Protects against overvoltage events
• Adjustable current limit threshold
• Wide operating temperature range
• Low quiescent current consumption

Disadvantages

• Limited to a maximum input voltage of 80V
• Requires external components for complete power management solution

Working Principles

LTC4221IGN#PBF operates by continuously monitoring the input voltage and current flowing through the system. It compares these values with the user-defined thresholds set using the ILIM and OV pins. If the voltage exceeds the overvoltage threshold or the current surpasses the current limit threshold, the IC triggers the appropriate fault outputs and takes necessary actions to protect the system.

Detailed Application Field Plans

LTC4221IGN#PBF finds applications in various fields, including: - Server and data center power management - Industrial automation systems - Telecommunications equipment - Automotive electronics - Power distribution systems

Detailed and Complete Alternative Models

1. LTC4222IGN#PBF: Similar to LTC4221IGN#PBF but with additional features such as reverse current protection.
2. LTC4223IGN#PBF: A higher voltage version of LTC4221IGN#PBF, capable of handling input voltages up to 120V.
3. LTC4224IGN#PBF: Designed specifically for high-power applications, offering higher current limit thresholds.

(Note: The above alternative models are just a few examples; there are several other alternatives available in the market.)

Word count: 610 words