LM5069MM-2/NOPB LM5069MM-2 LM5069MMX-2/NOPB Power Path Management IC Hot Swap Voltage Controllers NRND

1 Features

• Wide Operating Range: 9 V to 80 V

• In-Rush Current Limit for Safe Board Insertion into

  Live Power Sources

• Programmable Maximum Power Dissipation in the External Pass Device

• Adjustable Current Limit

• Circuit Breaker Function for Severe Overcurrent Events

• Internal High Side Charge Pump and Gate Driver for External N-channel MOSFET

• Adjustable Undervoltage Lockout (UVLO) and Hysteresis

• Adjustable Overvoltage Lockout (OVLO) and Hysteresis

• Initial Insertion Timer Allows Ringing and Transients to Subside after System Connection

• Programmable Fault Timer Avoids Nuisance Trips

• Active High Open Drain POWER GOOD Output

• Available in Latched Fault and Automatic Restart Versions

2 Applications

• Server Backplane Systems
• Base Station Power Distribution Systems • Solid State Circuit Breaker
• 24-V and 48-V Industrial Systems

3 Description

The LM5069 positive hot swap controller provides intelligent control of the power supply connections during insertion and removal of circuit cards from a live system backplane or other hot power sources. The LM5069 provides in-rush current control to limit system voltage droop and transients. The current limit and power dissipation in the external series pass N- Channel MOSFET are programmable, ensuring operation within the Safe Operating Area (SOA). The POWER GOOD output indicates when the output voltage is within 1.25 V of the input voltage. The input undervoltage and overvoltage lockout levels and hysteresis are programmable, as well as the initial insertion delay time and fault detection time. The LM5069-1 latches off after a fault detection, while the LM5069-2 automatically restarts at a fixed duty cycle. LM5069 is available in a 10-pin VSSOP package.

Device Information