LTC1422IN8#PBF

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PMIC - Hot Swap Controllers equip digital products with enhanced power protection and device reliability in often extreme temperature settings. LTC1422IN8#PBF is a dual-channel hot swap MOSFET controller that helps maintain integrity and proper operation of many digital products while maintaining essential safety functions. It provides accurate current control, logic-level sequencing, and fault status reporting for systems with up to two power supplies. With an on-chip fault timer, the LTC1422IN8#PBF offers a robust solution for hot swap operations, making it ideal for a variety of applications.

Application

The LTC1422IN8#PBF is a dual-channel hot swap MOSFET controller designed for a variety of applications such as telecommunications, datacom, embedded, industrial, and automotive. It can be used to control the voltage and power draw of up to two MOSFETs, allowing boards to be safely powered up and powered down without burning out components or frying circuits. It also provides reliable operation in applications that require high power, continuous performance, and extreme environments.

Functional Description

The LTC1422IN8#PBF is a dual-channel MOSFET controller, including an on-chip fault timer. It detects the voltage of both its MOSFETs and provides an accurate TTL-level output to its corresponding MOSFETs for proper power control, sequencing, and fault status reporting. The LTC1422IN8#PBF features current-limit and short-circuit protection. It also features an adjustable power-up delay, adjustable fault timer, brown-out/overvoltage detection, and soft-start/overshoot protection functions.

Features

• Low quiescent current - 30uA
• Programmable fault timer - up to 400ms
• Adjustable power-up/down delay - up to 10s
• Current-limit/short-circuit protection
• Brown-out/overvoltage detection
• Soft-start/overshoot protection
• Undervoltage lockout

Packaging

The LTC1422IN8#PBF is available in an 8-lead plastic package (LTC1422IN8#PBF) with a 0.6” × 0.6” footprint. It has two power pins, two chip enable pins, four ground pins, and two channels. This package minimizes the amount of board space required and helps simplify the design of efficient power systems.

Applications

• Telecommunications systems
• Data communications systems
• Embedded systems
• Industrial automation systems
• Automotive systems

Conclusion

This article has outlined the features, applications, and working principle of the LTC1422IN8#PBF. This dual-channel hot swap MOSFET controller provides reliable power control, sequencing, and fault status reporting for digital products in extreme temperature settings. Its features such as current-limit and short-circuit protection, adjustable power-up, and brown-out/overvoltage detection make this controller ideal for a variety of applications.

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