Maxim MAX5903ABETT+

热插拔控制器1自动重试，故障超时，发热限制，UVLO

Overview

The MAX5902/MAX5903ABETT are hot-swap controllers that allow a circuit card to be safely hot plugged into a live backplane without causing a glitch on the power-supply rail. These devices operate from +9V to +72V and provide the simplest hot-swap solution by eliminating all external components except the external p-channel MOSFET. The MAX5902/MAX5903ABETT limit the inrush current to the load and provide a circuit-breaker function for overcurrent protection. During startup the circuit-breaker function is disabled and the MAX5902/MAX5903ABETT limit the inrush current by gradually turning on the external MOSFET. Once the external MOSFET is fully enhanced, the circuit-breaker function is enabled and the MAX5902/MAX5903ABETT provide overcurrent protection by monitoring the voltage drop across the external MOSFET's on-resistance. The MAX5902/MAX5903ABETT include an undervoltage lockout (UVLO) function, ON/active-low OFF control input, and a power-good status output, active-low PGOOD (MAX5902) or PGOOD (MAX5903). A built-in thermal shutdown feature is also included to protect the external MOSFET in case of overheating. The MAX5902/MAX5903ABETT offer latched or autoretry fault management and are available with 300mV, 400mV or 500mV circuit-breaker thresholds. Both the MAX5902 and MAX5903ABETT are available in small SOT23 and TDFN packages, and are specified for the extended -40°C to +85°C temperature range. For specific ordering information, see the Selector Guide at the end of the data sheet.

Features

Simple Swapper™ Series
Bulk Package
Hot Swap Controller Type
1 Number of Channels
Both Internal Switch(s)
Networking Applications
Auto Retry, Fault Timeout, Thermal Limit, UVLO Features
Auto Retry, Circuit Breaker, Current Limit, Fault Timeout, Slew Rate, Thermal Limit, UVLO Programmable Features
9V ~ 72V Voltage - Supply
1 mA Current - Supply
Surface Mount Mounting Type