Datasheet Linear Technology LTC4223CDHD-1#PBF

Manufacturer	Linear Technology
Series	LTC4223
Part Number	LTC4223CDHD-1#PBF

Dual Supply Hot Swap Controller for Advanced Mezzanine Card

Datasheets

PDF, 297 Kb, File uploaded: Oct 25, 2017

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Packaging

Package	5x4 DFN-16
Package Code	DHD
Package Index	05-08-1707

Parametrics

Active Limiting	yes
Circuit Breaker Accuracy	5 %
Circuit Breaker Threshold	50mV (12), 240mA (3.3 aux)
Circuit Breakers	2
Demo Boards	DC1162A-A,DC1162A-B
Export Control	no
Fault Output	yes
Features	Current Monitor Output
Foldback	no
In-Rush Current	Active
Isupply	0.8 mA
Operating Temperature Range	0 to 70 °C
Power Good Output	yes
Reset Output	no
Sequencing	yes
Tracking	no
Vin Range	12, 3.3 aux

Eco Plan

RoHS

Compliant

Design Notes

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Hot Swap Solution Meets AMC and MicroTCA Standards &mdash DN437
PDF, 103 Kb, File published: Mar 17, 2008
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Hot Swap Solution Meets AMC and MicroTCA Standards
Design Note 437
Vladimir Ostrerov
Introduction
The LTC В®4223 is a dual Hot Swapв„ў controller that meets
the power requirements of the Micro Telecommunication
Computing Architecture (MicroTCA) speciп¬Ѓcation recently
ratiп¬Ѓed by the PCI Industrial Computer Manufacturers
Group (PICMG). The LTC4223 monitors 12V load current by sensing
voltage across an external resistor and outputs a groundreferenced voltage (at the 12IMON pin) proportional to
the load current. It also provides separate power-good
outputs for the two supplies and a single, common fault
output. Additional features include card detection and
independent control of the two supplies. The LTC42231 latches off after a circuit breaker fault timeout expires
while the LTC4223-2 provides automatic retry after a
fault. A fault on the 12V supply shuts down only the 12V
path, leaving the 3.3V auxiliary power available for system
management functions. A fault on the 3.3V AUX supply
shuts down both supplies. The LTC4223 includes an internal pass FET for the 3.3V
auxiliary supply and a driver for an external N-channel
pass FET for the 12V payload supply. Inrush current for
both supplies is controlled: the auxiliary supply has a
п¬Ѓxed 240mA active current limit and the 12V ramp rate …

Articles

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Compact Hot Swap Solution Simplifies Advanced Mezzanine Card Design &mdash LT Journal
PDF, 392 Kb, File published: Mar 19, 2008
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DESIGN FEATURESвЂ‰L Compact Hot Swap Solution Simplifies
Advanced Mezzanine Card Design
by Chew Lye Huat
Introduction
Advanced Mezzanine Cards (AdvancedMC) are 80W add-on modules
that are central to the extensibility
of MicroTCA and AdvancedTCA high
availability systems. AdvancedTCA targets high capacity, high performance
applications whereas MicroTCA serves
smaller, cost-sensitive applications
with less demanding requirements.
Unlike other mezzanine modules,
which are bolted on, AdvancedMC
modules can be inserted into a live
backplane improving serviceability
and flexibility. The LTC4223 offers a compact and
comprehensive Hot Swap solution for
Advanced Mezzanine Cards, providing
inrush control, overcurrent protection
and supply monitoring. It detects
board insertion and extraction, allowing the 12V and 3.3V auxiliary power
supply to be delivered in a controlled
manner without damaging the connector. The LTC4223 provides a current …

Model Line

Series: LTC4223 (16)

LTC4223CDHD-1#PBF LTC4223CDHD-1#TRPBF LTC4223CDHD-2#PBF LTC4223CDHD-2#TRPBF LTC4223CGN-1#PBF LTC4223CGN-1#TRPBF LTC4223CGN-2#PBF LTC4223CGN-2#TRPBF LTC4223IDHD-1#PBF LTC4223IDHD-1#TRPBF LTC4223IDHD-2#PBF LTC4223IDHD-2#TRPBF LTC4223IGN-1#PBF LTC4223IGN-1#TRPBF LTC4223IGN-2#PBF LTC4223IGN-2#TRPBF

Manufacturer's Classification

Monitor, Control and Protection > Hot Swap Controllers > Low Voltage Hot Swap Controllers

Other Names:

LTC4223CDHD-1PBF, LTC4223CDHD-1 PBF, LTC4223CDHD1#PBF, LTC4223CDHD 1#PBF

Slices

Microcontrollers