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LTC4217CDHC
Product Overview
Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: - High voltage Hot Swap controller - Ideal for power supply systems requiring live insertion and removal of circuit boards - Provides protection against overcurrent, overvoltage, and undervoltage conditions - Monitors the input voltage and controls the output voltage during power-up and power-down sequences
Package: 16-Lead Ceramic Dual-In-Line Package (CDIP)
Essence: The LTC4217CDHC is a high voltage Hot Swap controller designed to protect sensitive circuitry from inrush current and overvoltage events during board insertion and removal.
Packaging/Quantity: The LTC4217CDHC is available in a 16-Lead CDIP package. Quantity may vary depending on supplier.
Specifications
- Input Voltage Range: -0.3V to 100V
- Output Voltage Range: 0V to 100V
- Operating Temperature Range: -40°C to 85°C
- Maximum Current Limit: 1A
- Overvoltage Threshold: Adjustable from 2.5V to 100V
- Undervoltage Threshold: Adjustable from -0.3V to 100V
Detailed Pin Configuration
The LTC4217CDHC has the following pin configuration:
- VCC: Supply voltage input
- GND: Ground reference
- FLT: Fault indicator output
- OV: Overvoltage threshold adjustment
- UV: Undervoltage threshold adjustment
- ILIM: Current limit adjustment
- IN: Positive supply voltage input
- OUT: Positive supply voltage output
- SENSE: Sense resistor connection
- ADJ: Output voltage adjustment
- REF: Reference voltage output
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
- NC: No connection
Functional Features
- Overcurrent protection: Monitors the current flowing through the sense resistor and limits it to a safe level.
- Overvoltage protection: Detects excessive output voltage and shuts down the power supply to prevent damage to the circuitry.
- Undervoltage protection: Monitors the input voltage and prevents the output voltage from dropping below a certain threshold.
- Fault indication: Provides an indicator output (FLT) to signal any fault conditions.
- Adjustable thresholds: Allows customization of overvoltage and undervoltage thresholds according to specific requirements.
Advantages and Disadvantages
Advantages: - Protects sensitive circuitry during live insertion and removal of boards - Adjustable overvoltage and undervoltage thresholds for flexibility - Fault indication for easy troubleshooting - High voltage range for versatile applications
Disadvantages: - Limited maximum current limit of 1A - Requires external sense resistor for current monitoring
Working Principles
The LTC4217CDHC is designed to facilitate the safe insertion and removal of circuit boards in power supply systems. It continuously monitors the input and output voltages, as well as the current flowing through the sense resistor. During power-up and power-down sequences, it controls the output voltage to ensure a smooth transition without causing any damage to the connected circuitry.
Detailed Application Field Plans
The LTC4217CDHC can be used in various applications, including: - Server racks and data centers - Telecom equipment - Industrial control systems - Automotive electronics - Medical devices
Detailed and Complete Alternative Models
Some alternative models that offer similar functionality to the LTC4217CDHC are: - LTC4210: Hot Swap controller with adjustable current limit and fault indication - LTC4215: High voltage Hot Swap controller with adjustable overvoltage and undervoltage thresholds - LTC4216: Hot Swap controller with integrated power MOSFETs for higher current applications
These alternative models can be considered based on specific requirements and system constraints.
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Énumérez 10 questions et réponses courantes liées à l'application de LTC4217CDHC dans les solutions techniques
Sure! Here are 10 common questions and answers related to the application of LTC4217CDHC in technical solutions:
Q: What is LTC4217CDHC? A: LTC4217CDHC is a high voltage Hot Swap controller designed to protect circuitry on power supply cards from inrush current, overvoltage, and overcurrent conditions.
Q: What is the maximum input voltage supported by LTC4217CDHC? A: The maximum input voltage supported by LTC4217CDHC is typically 80V, making it suitable for a wide range of applications.
Q: How does LTC4217CDHC protect against inrush current? A: LTC4217CDHC uses an adjustable current limit feature to control the rate at which the load capacitance charges up, preventing excessive inrush current.
Q: Can LTC4217CDHC handle overvoltage conditions? A: Yes, LTC4217CDHC has built-in overvoltage protection that monitors the output voltage and shuts off the pass transistor if it exceeds a set threshold.
Q: Is LTC4217CDHC capable of handling overcurrent situations? A: Absolutely, LTC4217CDHC incorporates an adjustable current limit feature that protects against overcurrent conditions by limiting the output current.
Q: What is the purpose of the fault flag output pin on LTC4217CDHC? A: The fault flag output pin provides a signal indicating when a fault condition, such as overvoltage or overcurrent, has occurred.
Q: Can LTC4217CDHC be used in hot-swappable applications? A: Yes, LTC4217CDHC is specifically designed for hot-swap applications where circuit boards can be inserted or removed while the system is powered.
Q: Does LTC4217CDHC have any thermal protection features? A: Yes, LTC4217CDHC includes a thermal shutdown feature that disables the pass transistor if the junction temperature exceeds a safe limit.
Q: What is the typical operating current of LTC4217CDHC? A: The typical operating current of LTC4217CDHC is very low, typically around 1.5mA, making it suitable for power-sensitive applications.
Q: Can LTC4217CDHC be used in both high-side and low-side applications? A: No, LTC4217CDHC is specifically designed for high-side applications where the controller is placed between the power source and the load.
Please note that these answers are general and may vary depending on specific application requirements and datasheet specifications.