MAX5947BESA+T

The MAX5947BESA+T is a positive high-voltage, hot-swap controller in 8 pin NSOIC package. This is fully integrated hot-swap controller for +9V to +80V positive supply rails allow for safe insertion and removal of circuit cards into live backplanes without causing glitches on backplane power-supply rail. The MAX5947B is pin and function compatible with the LT1641-2. During start-up, it acts as a current regulator using an external sense resistor and a MOSFET to limit amount of current drawn by the load. The UVLO threshold is adjustable using a resistive divider connected from VCC to ON to GND. It monitors input voltage, output voltage, output current and the die temperature. Device features power-good output to indicate status of output voltage by monitoring the voltage at FB. It is used in hot board insertion, electronic circuit breakers, industrial high-side switch/circuit breakers, network routers and switches and 24V/48V industrial/alarm systems.

• Provides safe hot swap for +9V to +80V power supply range
• Operating temperature range from -40°C to 85°C
• Maximum supply current of 3.5mA at VON = 3V, VCC = 80V
• Active-high power good output logic, autoretry fault protection
• 8.3V default UVLO, overvoltage protection, 3.75% duty cycle
• Safe board insertion and removal from live backplanes
• Programmable foldback current limiting
• High-side drive for an external N-channel MOSFET
• User programmable supply voltage power-up rate
• Built-in thermal shutdown
• 24V/48V Industrial/Alarm Systems; Electronic Circuit Breakers; Hot Board Insertion; Industrial High-Side Switch/Circuit Breakers; Network Routers and Switches

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party