Overview
The LT4256-2IS8#TRPBF is a high voltage Hot Swap controller designed by Analog Devices Inc. This component allows a board to be safely inserted and removed from a live backplane, ensuring reliable and safe operation in high-voltage environments. It is part of the LT4256 series, which includes various configurations for different application needs.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Supply Voltage (VCC) | -0.3 to 100 | V |
| Operating Temperature | -40 to 85 (LT4256I) | °C |
| Storage Temperature Range | -65 to 150 | °C |
| Lead Temperature (Soldering, 10 sec) | 300 | °C |
| Maximum Input Current (GATE) | 200 | µA |
| Maximum Input Current (TIMER) | 100 | µA |
| Package Type | 8-Lead Plastic SOIC N | |
| RoHS Compliance | Yes |
Key Features
- High Voltage Hot Swap Capability: Allows safe insertion and removal of boards from live backplanes up to 100V.
- Overcurrent Protection: Prevents damage from excessive current during startup or fault conditions.
- Internal Fault Latch: Automatically shuts down the device in case of a fault and requires a reset before it can be turned on again.
- Timer Functionality: Includes a timer pin that can be used to control the startup sequence and fault handling.
- Power Good Indicator (PWRGD): Provides a signal indicating when the output voltage is within the specified range.
- Compact Package: Available in an 8-lead SOIC N package, suitable for space-constrained designs.
Applications
- Telecom and Networking Equipment: Ideal for hot-swappable line cards and other high-voltage applications.
- Server and Data Center Systems: Ensures reliable and safe operation of power supplies and other critical components.
- Industrial Control Systems: Suitable for high-voltage industrial control and automation systems.
- Medical Equipment: Used in medical devices requiring high reliability and safety during power-up and power-down sequences.
Q & A
- What is the primary function of the LT4256-2IS8#TRPBF?
The primary function is to allow safe insertion and removal of boards from live backplanes, providing high voltage hot swap capability.
- What is the maximum supply voltage for the LT4256-2IS8#TRPBF?
The maximum supply voltage is 100V.
- What type of package does the LT4256-2IS8#TRPBF come in?
The component comes in an 8-lead SOIC N package.
- Does the LT4256-2IS8#TRPBF have overcurrent protection?
Yes, it includes overcurrent protection to prevent damage during startup or fault conditions.
- How does the internal fault latch work in the LT4256-2IS8#TRPBF?
The internal fault latch sets when the TIMER pin reaches a certain threshold, causing the GATE to be pulled low and the TIMER to be discharged. The device cannot turn on again until the voltage on the TIMER falls below a specified level.
- What is the purpose of the PWRGD pin?
The PWRGD pin provides a signal indicating when the output voltage is within the specified range.
- Is the LT4256-2IS8#TRPBF RoHS compliant?
Yes, the component is RoHS compliant.
- What are the operating temperature ranges for the LT4256-2IS8#TRPBF?
The operating temperature range is -40°C to 85°C for the LT4256I version.
- Can the LT4256-2IS8#TRPBF be used in medical equipment?
Yes, it is suitable for use in medical devices requiring high reliability and safety during power-up and power-down sequences.
- What is the storage temperature range for the LT4256-2IS8#TRPBF?
The storage temperature range is -65°C to 150°C.
