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LM5069MM-2 Datasheet

  • LM5069MM-2

  • Positive High Voltage Hot Swap / Inrush Current Controller w...

  • 22頁

  • NSC

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LM5069 Positive High Voltage Hot Swap / Inrush Current Controller with Power Limiting
March 5, 2008
LM5069
Positive High Voltage Hot Swap / Inrush Current Controller
with Power Limiting
General 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 cur-
rent 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 1.25V of the
input voltage. The input under-voltage and over-voltage lock-
out 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. The
LM5069 is available in a 10 pin MSOP package.
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Adjustable current limit
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Circuit breaker function for severe over-current events
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Internal high side charge pump and gate driver for external
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N-channel MOSFET
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
Applications
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Server Backplane Systems
Base Station Power Distribution Systems
Solid State Circuit Breaker
24V/48V Industrial Systems
Features
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Wide operating range: +9V to +80V
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In-rush current limit for safe board insertion into live power
sources
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Programmable maximum power dissipation in the external
pass device
Package
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MSOP-10
Typical Application
20197201
Positive Power Supply Control
漏 2008 National Semiconductor Corporation
201972
www.national.com

LM5069MM-2 產品屬性

  • National Semiconductor (TI)

  • - 40 C

  • SMD/SMT

  • MSOP

  • Reel

  • 1000

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