Datasheet Linear Technology LTC4218

Manufacturer	Linear Technology
Series	LTC4218

Hot Swap Controller

Datasheets

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PDF, 329 Kb, Revision: H, File uploaded: Oct 25, 2017

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Packaging

	LTC4218CDHC-12#PBF	LTC4218CDHC-12#TRPBF	LTC4218CGN#PBF	LTC4218CGN#TRPBF	LTC4218IDHC-12#PBF	LTC4218IDHC-12#TRPBF	LTC4218IGN#PBF	LTC4218IGN#TRPBF
N	1	2	3	4	5	6	7	8
Package	5x3 DFN-16 Package Outline Drawing	5x3 DFN-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	5x3 DFN-16 Package Outline Drawing	5x3 DFN-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	SSOP-16 Package Outline Drawing
Package Code	DHC	DHC	GN	GN	DHC	DHC	GN	GN
Package Index	05-08-1706	05-08-1706	05-08-1641 (GN16)	05-08-1641 (GN16)	05-08-1706	05-08-1706	05-08-1641 (GN16)	05-08-1641 (GN16)
Pin Count	16	16	16	16	16	16	16	16

Parametrics

Parameters / Models	LTC4218CDHC-12#PBF	LTC4218CDHC-12#TRPBF	LTC4218CGN#PBF	LTC4218CGN#TRPBF	LTC4218IDHC-12#PBF	LTC4218IDHC-12#TRPBF	LTC4218IGN#PBF	LTC4218IGN#TRPBF
Active Limiting	yes	yes	yes	yes	yes	yes	yes	yes
Circuit Breaker Accuracy, %	5	5	5	5	5	5	5	5
Circuit Breaker Threshold	15mV	15mV	15mV	15mV	15mV	15mV	15mV	15mV
Circuit Breakers	1	1	1	1	1	1	1	1
Demo Boards	DC1052A-A	DC1052A-A	DC1052A-A	DC1052A-A	DC1052A-A	DC1052A-A	DC1052A-A	DC1052A-A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Export Control	no	no	no	no	no	no	no	no
Fault Output	yes	yes	yes	yes	yes	yes	yes	yes
Features	Current Monitor Output	Current Monitor Output	Current Monitor Output	Current Monitor Output	Current Monitor Output	Current Monitor Output	Current Monitor Output	Current Monitor Output
Foldback	yes	yes	yes	yes	yes	yes	yes	yes
Isupply, mA	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6
Operating Temperature Range, °C	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Power Good Output	yes	yes	yes	yes	yes	yes	yes	yes
Reset Output	no	no	no	no	no	no	no	no
Sequencing	no	no	no	no	no	no	no	no
Tracking	no	no	no	no	no	no	no	no
Vin Range	2.9V to 26.5V	2.9V to 26.5V	2.9V to 26.5V	2.9V to 26.5V	2.9V to 26.5V	2.9V to 26.5V	2.9V to 26.5V	2.9V to 26.5V

Eco Plan

	LTC4218CDHC-12#PBF	LTC4218CDHC-12#TRPBF	LTC4218CGN#PBF	LTC4218CGN#TRPBF	LTC4218IDHC-12#PBF	LTC4218IDHC-12#TRPBF	LTC4218IGN#PBF	LTC4218IGN#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Articles

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12V/100A Hot Swap Design for Server Farms &mdash LT Journal
PDF, 264 Kb, File published: Oct 27, 2014
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12V/100A Hot Swap Design for Server Farms
Dan Eddleman As data centers servicing the cloud grow in speed and capacity, backplane supplies
are called on to deliver currents that push the performance boundaries of Hot Swap
components. Hot Swap solutions allow boards to be inserted and removed from a live
backplane without disturbing the power distributed to other boards. A typical Hot Swap
solution uses a series MOSFET to manage the flow of power between the backplane and
the boardвЂ”preventing glitches and faults from disrupting power to the rest of the system.
The challenges of designing robust Hot
Swap solutions multiply with increasing
current demands. With load currents at
100A, simply determining power dissipation requirements is no longer sufficient.
Designers must pay careful attention to
the MOSFET safe operating area (SOA) and
understand Kelvin current sensing techniques for multiple sense resistors. This
article shows how to address these issues
using the example of a 12V/100A solution
based on the LTC4218 Hot Swap controller. resistance is low during start-up (such as
might occur during an output short-circuit
fault), the LTC4218 detects this condition and turns off the series MOSFET.
During start-up, the circuitвЂ™s current
limit threshold is reduced by pulling
the LTC4218вЂ™s ISET pin low through R4
until the PG signal transitions high. R4вЂ™s RSENSE RESISTOR ARRAY …

Model Line

Series: LTC4218 (8)

LTC4218CDHC-12#PBF LTC4218CDHC-12#TRPBF LTC4218CGN#PBF LTC4218CGN#TRPBF LTC4218IDHC-12#PBF LTC4218IDHC-12#TRPBF LTC4218IGN#PBF LTC4218IGN#TRPBF

Manufacturer's Classification

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