LM5067

LM5067 www.ti.com SNVS532C – OCTOBER 2007 – REVISED MARCH 2013 Negative Hot Swap / Inrush Current Controller with Power Limiting Check for Samples: LM5067 FEATURES 1 2 Wide operating range: -9V to -80V 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 over- current events Adjustable under-voltage lockout (UVLO) and hysteresis Adjustable over-voltage 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 PACKAGES VSSOP-10 SOIC-14 (Latched Fault Version) DESCRIPTION The LM5067 negative 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 LM5067 provides in-rush current control to limit system voltage droop and transients. The current limit and power dissipation in the external series pass NChannel MOSFET are programmable, ensuring operation within the Safe Operating Area (SOA). In addition, the LM5067 provides circuit protection by monitoring for over-current and over-voltage conditions. The POWER GOOD output indicates when the output voltage is close to the inp...