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 

• 10-Pin VSSOP packag

Applications 

• Server backplane systems 

• Base station power distribution systems 

• Solid state circuit breaker 

• 24-V and 48-V Industrial systems 

Description 

The ZCC5069 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 ZCC5069 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 ZCC5069-1  latches  off  after a fault detection, 

while the  ZCC5069-2 automatically restarts at a fixed duty cycle. ZCC5069 is available in a 10-pin VSSOP 

package.

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