SG Micro SGM25701A

The SGM25701A is a positive hot swap controller that allows a board to be safely inserted or removed from a live backplane. Inrush current control function can effectively reduce the voltage drop on the power supply rail.

It offers programmable power-limiting and current limit to ensure that the external MOSFET operates within its safe operating area (SOA) at all times.

Programmable under-voltage lockout or over-voltage lockout is used to turn off the device if the V_IN drops below or raises over a threshold value. The fault detection time and initial insertion delay time can also be adjusted by the user.

Key features

• Wide input voltage range: 9V to 70V
• Inrush current limit
• Retry behavior after fault: auto-retry
• Open-drain for good output indication

Additional features

• Inrush current limit, PCB can be safely inserted into live equipment
• External device programming maximum loss limit
• Programmable current limit
• Adjustable Under-Voltage Lockout (EN/UVLO)
• Adjustable Over-Voltage Lockout (OVLO)
• Quick cut-off function when severe over-current occurs
• Configure charge pump/gate driver for external N-MOSFET
• The setting of the insertion time allowing the ringing and transient recovery process after the system connected
• Adjustable fault timing to prevent false shutdown
• Available in a green MSOP-10 package

Applications

• 24V/48V Industrial systems
• Server backplane systems
• Solid state circuit breaker
• Base station