LTC4242IG#TRPBF
Product Overview
- Category: Integrated Circuit (IC)
- Use: Power Management
- Characteristics: High Efficiency, Low Quiescent Current
- Package: 24-Lead Thin Shrink Small Outline Package (TSSOP)
- Essence: Power Over Ethernet (PoE) Controller
- Packaging/Quantity: Tape and Reel, 2500 units per reel
Specifications
- Input Voltage Range: 36V to 57V
- Output Voltage Range: 3.3V to 5.25V
- Maximum Output Current: 400mA
- Quiescent Current: 60µA
- Operating Temperature Range: -40°C to 85°C
Detailed Pin Configuration
- VDD: Power Supply Input
- GND: Ground
- INTVCC: Internal Voltage Regulator Output
- VOUT: Output Voltage
- FB: Feedback Pin for Output Voltage Regulation
- EN: Enable Pin
- ILIM: Current Limit Setting
- PGOOD: Power Good Indicator
- VEE: Negative Supply Voltage
- VREF: Reference Voltage Output
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
- NC: No Connection
Functional Features
- Power over Ethernet (PoE) Controller
- Integrated Switching Regulator
- Programmable Current Limit
- Power Good Indicator
- Thermal Shutdown Protection
- Undervoltage Lockout (UVLO)
- Enable Pin for Power Management
Advantages and Disadvantages
Advantages: - High Efficiency Power Conversion - Low Quiescent Current - Programmable Current Limit - Integrated Protection Features
Disadvantages: - Limited Output Current (400mA) - Limited Input Voltage Range (36V to 57V)
Working Principles
The LTC4242IG#TRPBF is a Power over Ethernet (PoE) controller designed to provide power to network devices through an Ethernet cable. It integrates a switching regulator that efficiently converts the high voltage input from the Ethernet cable into a regulated output voltage suitable for powering the device.
The controller features programmable current limit settings, allowing customization based on the power requirements of the connected device. It also includes thermal shutdown protection and undervoltage lockout to ensure safe operation.
By utilizing the enable pin, the LTC4242IG#TRPBF enables power management functionality, allowing the device to be turned on or off as needed. The power good indicator provides a signal indicating the presence of a valid output voltage.
Detailed Application Field Plans
The LTC4242IG#TRPBF is commonly used in various applications where Power over Ethernet (PoE) is required. Some typical application fields include:
- IP Cameras: The controller can power IP cameras, eliminating the need for separate power cables and simplifying installation.
- Wireless Access Points: PoE-enabled access points can be powered using the LTC4242IG#TRPBF, providing flexibility in deployment locations.
- VoIP Phones: The controller can supply power to VoIP phones, reducing clutter and enabling easy relocation.
- Network Switches: PoE switches can utilize the LTC4242IG#TRPBF to provide power to connected devices, such as IP phones and wireless access points.
Detailed and Complete Alternative Models
- LTC4267-2: PoE Controller with Integrated Switching Regulator
- LT4275A: IEEE 802.3bt PD Interface Controller
- TPS23754: PoE PD Interface and DC/DC Controller
These alternative models offer similar functionality and can be considered as alternatives to the LTC4242IG#TRPBF.
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기술 솔루션에 LTC4242IG#TRPBF 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.
Sure! Here are 10 common questions and answers related to the application of LTC4242IG#TRPBF in technical solutions:
Q: What is LTC4242IG#TRPBF? A: LTC4242IG#TRPBF is a power management IC (integrated circuit) designed for hot-swappable applications, providing protection and control for high-power devices.
Q: What are the key features of LTC4242IG#TRPBF? A: Some key features include overvoltage protection, undervoltage lockout, current limiting, thermal shutdown, and fault reporting.
Q: How does LTC4242IG#TRPBF provide overvoltage protection? A: LTC4242IG#TRPBF monitors the voltage across an external sense resistor and shuts off the power path if the voltage exceeds a set threshold.
Q: Can LTC4242IG#TRPBF handle high-power devices? A: Yes, LTC4242IG#TRPBF is designed to handle high-power devices with its current limiting feature, which protects against excessive current draw.
Q: What is undervoltage lockout? A: Undervoltage lockout ensures that the power path remains off until the input voltage reaches a specified threshold, preventing unreliable operation at low voltages.
Q: How does LTC4242IG#TRPBF handle thermal issues? A: LTC4242IG#TRPBF has a built-in thermal shutdown feature that disables the power path when the chip temperature exceeds a certain limit, protecting it from overheating.
Q: Can LTC4242IG#TRPBF report faults? A: Yes, LTC4242IG#TRPBF provides fault reporting through a dedicated pin, allowing the system to detect and respond to any issues.
Q: What are the typical applications of LTC4242IG#TRPBF? A: LTC4242IG#TRPBF is commonly used in hot-swappable systems, such as servers, network switches, storage devices, and industrial equipment.
Q: Does LTC4242IG#TRPBF support multiple power sources? A: Yes, LTC4242IG#TRPBF can handle multiple power sources and automatically selects the highest voltage source for the load.
Q: Is LTC4242IG#TRPBF easy to integrate into a system? A: Yes, LTC4242IG#TRPBF comes in a compact package and requires minimal external components, making it relatively easy to integrate into various technical solutions.
Please note that these answers are general and may vary depending on specific application requirements.