高压热插拔ZCC5069 兼容LM5069

1 Features
1• 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 package
2 Applications
• Server backplane systems
• Base station power distribution systems
• Solid state circuit breaker
• 24-V and 48-V Industrial systems
3 Description
The 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 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.