MAXIM Integrated Products, represented by Arrow , has introduced the MAX5927 and MAX5929 (quad) and the MAX5930 and MAX5931 (triple) hot-swap controllers.
These new controllers allow the safe insertion and removal of circuit-line cards with multiple supplies into a live backplane.
Rated for systems with 1V to 13.2V supplies, these devices limit the inrush current drawn by the load and provide overcurrent and short-circuit protection.
The four new controllers have features that help simplify design and reduce external component count. Input-voltage rails can be configured to sequentially turn on/off, track each other, or operate independently. The devices' 25mV circuit-breaker threshold is suitable for low-voltage supplies.
Each device includes a VariableSpeed/BiLevel circuit breaker that protects against overcurrent conditions and prevents nuisance faults caused by noise and load transients.
The controllers also feature an adjustable-input undervoltage lockout, a power-good status indicator, and a choice of latched or auto-retry fault management.
The MAX5927 is available in a 32-pin TQFN package. The MAX5929 and MAX5930 are available in a 24-pin QSOP package. The MAX5931 is available in a 20-pin QSOP package.
These devices operate in the extended temperature range between -40°C and +85°C.