company blog about Mingjiada Supply ADI LTC4215 And LTC4261 Hot Swap Controllers

Mingjiada Supply ADI LTC4215 And LTC4261 Hot Swap Controllers

Shenzhen Mingjiada Electronics Co., Ltd. — Long-term supplier of the [ADI] LTC4215 hot-swap controller and the LTC4261 negative-voltage hot-swap controller. Designed for positive and negative voltage supply rails respectively, these two devices provide safe hot-swap capabilities, inrush current limiting and fault protection for applications in communications, servers, industrial control, telecommunications equipment and distributed power architectures, helping designers enhance board hot-swap reliability and system maintainability.

The LTC4215 is a positive voltage hot-swap controller launched by ADI, primarily used for hot-swap management of low-voltage positive supply rails on printed circuit boards. By controlling an external N-channel MOSFET, the device limits inrush current during insertion and provides functions such as programmable current limiting, overvoltage and undervoltage protection, and fault indication during operation. Certain versions also incorporate a digital monitoring interface, enabling the system to read operating parameters such as voltage and current, making them suitable for board designs requiring power monitoring and fault diagnosis.

The LTC4261 is a negative-voltage hot-swap controller introduced by ADI, designed for -48V telecommunications and networking power systems. The device controls an external MOSFET on the negative-voltage power rail to enable safe insertion and removal, whilst providing features such as programmable current limiting, an electronic circuit breaker, overvoltage and undervoltage protection, and a fault output. Its negative-voltage control architecture is suitable for applications utilising negative-voltage distributed power supplies, such as telecommunications base stations, network switching equipment and telecommunications equipment rooms.

Key Features
1. LTC4215 – Hot-swap controller with I²C-compatible monitoring functionality
Positive-voltage hot-swap control: Limits inrush current during board insertion via an external MOSFET.
Programmable current limit: Sets current thresholds based on system load, enhancing the flexibility of overcurrent protection.
Overvoltage/undervoltage protection: Monitors the input power supply status and initiates protective actions in the event of anomalies.
Fault Indication Output: Facilitates system monitoring of hot-swap and power supply fault conditions.
Digital Monitoring Capability: Certain versions support I²C-compatible monitoring, facilitating the reading of power supply operating parameters.
Compact Package: Suitable for board designs with space constraints.

2. LTC4261 – Negative-Voltage Hot-Swap Controller with ADC and I²C Monitoring Functions
Negative-Voltage Hot-Swap Control: Designed for -48V telecoms/networking power architectures, supporting safe insertion and removal.
Programmable Current Limit and Circuit Breaker: Limits inrush current and disconnects the load in the event of a line fault.
Overvoltage/Undervoltage Protection: Monitors the negative-voltage input range, enhancing the system’s immunity to disturbances.
Fault Output Indication: Facilitates the host system’s identification of protection events.
Suitable for telecommunications power systems: Ideal for communications and networking equipment utilising negative-voltage distributed power supply.
External MOSFET drive: Allows selection of appropriate power devices based on load current.

The LTC4215 and LTC4261 are widely applicable in equipment requiring hot-swap capability and power protection, including:
Communications equipment: Base stations, optical transmission equipment, access network equipment
Networking equipment: Switches, routers, server boards
Telecommunications power systems: -48V distributed power supply, data centre power distribution
Industrial control: PLC racks, industrial computers, modular control equipment
Data storage: storage arrays, hot-swappable hard disk backplanes
Test and measurement: modular instruments, pluggable function boards

Selected models supplied by Mingjiada Electronics:
LTC4215CUFD-1
LTC4215CUFD-3
LTC4215IUFD-1
LTC4215IUFD-3
LTC4215CGN
LTC4215CUFD
LTC4215IGN
LTC4215IUFD
LTC4261CGN-2
LTC4261CUFD
LTC4261CUFD-2
LTC4261IGN
LTC4261IGN-2
LTC4261IUFD
LTC4261IUFD-2

For specific model, package, stock and pricing information regarding the ADI LTC4215 and LTC4261 series, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) for further supply details.