Overview
The LTC4236IUFD-2#PBF is a Hot Swap controller manufactured by Analog Devices Inc. This component is designed to safely insert and remove power paths from a live backplane or powered connector, ensuring reliable and controlled power management in various applications.
Similar to other Hot Swap controllers from Analog Devices, the LTC4236IUFD-2#PBF utilizes N-channel pass transistors to manage supply voltages, providing a robust solution for power path management.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 4.5 to 44 | V |
| Current Limit to Circuit Breaker Threshold Ratios | Three selectable ratios | - |
| Fault Timer | Dual-rate fault timer | - |
| FAULT Output | Indicates circuit breaker status, 5mA current limit | - |
| Gate Drive | Charge pump sources 9µA at the GATE pin | - |
| Package Type | 16-Lead QFN (4mm x 4mm) | - |
| Operating Temperature Range | -40°C to 125°C | °C |
Key Features
- Wide Operating Range: The LTC4236IUFD-2#PBF can manage supply voltages ranging from 4.5V to 44V.
- Adjustable Current Limit and Circuit Breaker Threshold: Three selectable ratios of current limit to circuit breaker threshold to accommodate noisy loads and momentary high peak currents.
- Dual-Rate Fault Timer: Protects the MOSFET from extended output over-current events.
- FAULT Outputs: Indicates the circuit breaker status with a 5mA current limit.
- Gate Drive: Uses a charge pump to source 9µA at the GATE pin to turn on the external MOSFET.
- Configurable as Bidirectional Current Limiter/Circuit Breaker: Can be configured for high current applications by paralleling two channels.
Applications
- Data Centers and Cloud Infrastructure: For safe insertion and removal of power paths in live backplanes.
- Telecommunications Equipment: To manage power supply in telecom systems.
- Industrial Control Systems: For reliable power management in industrial environments.
- Server and Storage Systems: To ensure safe hot-swapping of power supplies.
Q & A
- What is the supply voltage range of the LTC4236IUFD-2#PBF?
The supply voltage range is from 4.5V to 44V.
- How does the LTC4236IUFD-2#PBF handle fault conditions?
The component features a dual-rate fault timer and FAULT outputs to indicate circuit breaker status. It also has auto-retry and latchoff options depending on the version.
- What is the purpose of the gate drive in the LTC4236IUFD-2#PBF?
The gate drive uses a charge pump to source 9µA at the GATE pin to turn on the external MOSFET.
- Can the LTC4236IUFD-2#PBF be configured as a bidirectional current limiter/circuit breaker?
- What is the operating temperature range of the LTC4236IUFD-2#PBF?
The operating temperature range is from -40°C to 125°C.
- What type of package does the LTC4236IUFD-2#PBF come in?
The component comes in a 16-Lead QFN (4mm x 4mm) package.
- How does the LTC4236IUFD-2#PBF manage noisy loads and high peak currents?
It has three selectable ratios of current limit to circuit breaker threshold to accommodate noisy loads and momentary high peak currents).
- Can the FAULT pin drive an LED?
- How does the auto-retry feature work in the LTC4236IUFD-2#PBF?
After a fault timeout, the auto-retry version waits 0.5 seconds before resetting the fault status and ramping up the GATE pin again).
- Can the LTC4236IUFD-2#PBF be used in data centers and cloud infrastructure?
