SQ24905C Datasheet | Silergy

Description The SQ24905CQEQ is a hot swap controller designed to facilitate the safe removal and insertion of a live circuit board into a backplane. It includes a 12-bit analog-to-digital converter (ADC) for monitoring current, power, voltage and temperature via a PMBus interface. The load current is measured using an internal current sense amplifier, with a default current limit of 20m V that can be adjusted as needed. This controller limits the current through the power path using an external N-channel MOSFET, controlled by the GATE pin. It also features overvoltage and undervoltage protection and a PWRGD signal to monitor the output supply. Additionally, it includes fast internal overcurrent detection and a RETRY pin for configuring automatic retry or latch-off in the event of an overcurrent fault. The SQ24905CQEQ is available in a 32-lead QFN5x5 package. Applications - Servers and Datacenters - Power Distribution Systems - Telemunication Equipment and Switches Features - 4.5V to 20V Input Voltage Range - ±0.6% Accurate, 12-Bit ADC for VIN, VOUT, IOUT, and Temperature Measurement - Split Hot Swap and Power Monitor Inputs for Additional External ADC Filtering - 320ns Response Time to Short-Circuit Events - Resistor-Programmable Current Limit of 5m V to 25m V VSENSE - Programmable Start-Up Current Limit - 1% Accurate UV, OV, and PWRGD Thresholds - Remote Temperature Sensing with Configurable Warning and Shutdown Thresholds - Shutdown After Detecting MOSFET Health Faults - FAULT_N Open Drain Output - Multi-functional GPO Output Pin: - SMBAlert Mode - General-purpose Digital Output Mode - Digital parator Mode - CONV Function Mode - Reports Power and Energy Consumption Over Time - Peak Detection Registers for Voltage, Current, and Power Monitoring - PROCHOT Power Throttling Capability for Precise Control of System Power Usage - PMBus Fast-Mode pliant Interface and SPI Interface - Moisture Sensitivity Level (MSL): 3 - QFN 5x5-32 Package SQ24905C Rev.1.0A © 2025 Silergy...