Datasheet Linear Technology LTC4261

Manufacturer	Linear Technology
Series	LTC4261

Negative Voltage Hot Swap Controllers with ADC and IВІC Monitoring

Datasheets

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PDF, 344 Kb, Revision: D, File uploaded: Oct 25, 2017

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Packaging

	LTC4261CGN#PBF	LTC4261CGN#TRPBF	LTC4261CGN-2#PBF	LTC4261CGN-2#TRPBF	LTC4261CUFD#PBF	LTC4261CUFD#TRPBF	LTC4261CUFD-2#PBF	LTC4261CUFD-2#TRPBF	LTC4261IGN#PBF	LTC4261IGN#TRPBF	LTC4261IGN-2#PBF	LTC4261IGN-2#TRPBF	LTC4261IUFD#PBF	LTC4261IUFD#TRPBF	LTC4261IUFD-2#PBF	LTC4261IUFD-2#TRPBF
N	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
Package	SSOP-28 Package Outline Drawing	SSOP-28 Package Outline Drawing	SSOP-28 Package Outline Drawing	SSOP-28 Package Outline Drawing	4x5 QFN-24 Package Outline Drawing	4x5 QFN-24 Package Outline Drawing	4x5 QFN-24 Package Outline Drawing	4x5 QFN-24 Package Outline Drawing	SSOP-28 Package Outline Drawing	SSOP-28 Package Outline Drawing	SSOP-28 Package Outline Drawing	SSOP-28 Package Outline Drawing	4x5 QFN-24 Package Outline Drawing	4x5 QFN-24 Package Outline Drawing	4x5 QFN-24 Package Outline Drawing	4x5 QFN-24 Package Outline Drawing
Package Code	GN	GN	GN	GN	UFD	UFD	UFD	UFD	GN	GN	GN	GN	UFD	UFD	UFD	UFD
Package Index	05-08-1641 (GN28)	05-08-1641 (GN28)	05-08-1641 (GN28)	05-08-1641 (GN28)	05-08-1696	05-08-1696	05-08-1696	05-08-1696	05-08-1641 (GN28)	05-08-1641 (GN28)	05-08-1641 (GN28)	05-08-1641 (GN28)	05-08-1696	05-08-1696	05-08-1696	05-08-1696
Pin Count	28	28	28	28	24	24	24	24	28	28	28	28	24	24	24	24

Parametrics

Parameters / Models	LTC4261CGN#PBF	LTC4261CGN#TRPBF	LTC4261CGN-2#PBF	LTC4261CGN-2#TRPBF	LTC4261CUFD#PBF	LTC4261CUFD#TRPBF	LTC4261CUFD-2#PBF	LTC4261CUFD-2#TRPBF	LTC4261IGN#PBF	LTC4261IGN#TRPBF	LTC4261IGN-2#PBF	LTC4261IGN-2#TRPBF	LTC4261IUFD#PBF	LTC4261IUFD#TRPBF	LTC4261IUFD-2#PBF	LTC4261IUFD-2#TRPBF
ADC	10-bit	10-bit	10-bit	10-bit	10-bit	10-bit	10-bit	10-bit	10-bit	10-bit	10-bit	10-bit	10-bit	10-bit	10-bit	10-bit
Active Limiting	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Circuit Breaker Accuracy, %	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
Circuit Breaker Threshold	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV	50mV
Circuit Breakers	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Demo Boards	DC998A	DC998A	DC998A	DC998A	DC998A	DC998A	DC998A	DC998A	DC998A	DC998A	DC998A	DC998A	DC998A	DC998A	DC998A	DC998A
Design Tools	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File	LTspice File,Linduino File
Export Control	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Fault Output	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Features	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface	10-bit ADC, Digital Interface
Foldback	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
In-Rush Current	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS	Active/SS
Isupply, mA	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2
OV	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Operating Temperature Range, °C	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Power Good Output	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Reset Output	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Sequencing	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
UV	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Vin Range	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V	-12V to -100V

Eco Plan

	LTC4261CGN#PBF	LTC4261CGN#TRPBF	LTC4261CGN-2#PBF	LTC4261CGN-2#TRPBF	LTC4261CUFD#PBF	LTC4261CUFD#TRPBF	LTC4261CUFD-2#PBF	LTC4261CUFD-2#TRPBF	LTC4261IGN#PBF	LTC4261IGN#TRPBF	LTC4261IGN-2#PBF	LTC4261IGN-2#TRPBF	LTC4261IUFD#PBF	LTC4261IUFD#TRPBF	LTC4261IUFD-2#PBF	LTC4261IUFD-2#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Design Notes

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AdvancedTCA Hot Swap Controller Monitors Power Distribution &mdash DN397
PDF, 117 Kb, File published: Aug 31, 2006
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AdvancedTCA Hot Swap Controller Monitors Power Distribution
Design Note 397
Mitchell Lee
Introduction
AdvancedTCA В® is a modular computing architecture
developed by the PCI Industrial Computer Manufacturers
Group for use in central ofп¬Ѓce telecom environments.
PICMGВ® 3.0 deп¬Ѓnes, among other things, the electrical
and mechanical attributes of the backplane, connectors
and removable cards in these вЂ“48V systems.
Each removable card, or front board, is designed for live
insertion into a working system. A power draw of up to
200W per front board is allowed, placing the maximum
load current in the 4A to 5A range.
Card-centric inrush limiting and quantitative current
and voltage monitoring are highly desirable to sanitize
the incoming battery feeds, minimize power plane
disturbances, allow for budgeting power consumption
and permit failure prediction in an otherwise functional
system. The LTC В®4261 Hot Swapв„ў controller provides
these features. Also included is a digital interface for
controlling the functions of the LTC4261, and for reading
the current and voltage measurement registers. …

Articles

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Negative Voltage Hot Swap Controller with 10-Bit ADC and I2C Monitoring &mdash LT Journal
PDF, 324 Kb, File published: Mar 28, 2006
Extract from the document
DESIGN FEATURES L Negative Voltage Hot Swap Controller
with 10-Bit ADC and I2C Monitoring
by Zhizhong Hou Introduction
High availability вЂ“48V power systems,
such as telecom and AdvancedTCA
systems, allow for circuit board
upgrade and replacement on a live
powered backplane. The primary role
of a Hot Swap controller is to make
this possible by limiting potentially
large inrush currents, which can cause
damage to the hot swapped board or
create disturbances on the backplane.
Traditionally, вЂ“48V Hot Swap controllers operate autonomouslyвЂ”the
Hot Swap controller shuts down an
abnormally operating board before
the host processor knows why. This
simpliп¬Ѓes system design, but gives
little in the way of diagnostic support
to the host.
A far more robust system would
use the Hot Swap controller to communicate the conditions of the board
to the host processor, and let the host …

Model Line

Series: LTC4261 (16)

LTC4261CGN#PBF LTC4261CGN#TRPBF LTC4261CGN-2#PBF LTC4261CGN-2#TRPBF LTC4261CUFD#PBF LTC4261CUFD#TRPBF LTC4261CUFD-2#PBF LTC4261CUFD-2#TRPBF LTC4261IGN#PBF LTC4261IGN#TRPBF LTC4261IGN-2#PBF LTC4261IGN-2#TRPBF LTC4261IUFD#PBF LTC4261IUFD#TRPBF LTC4261IUFD-2#PBF LTC4261IUFD-2#TRPBF

Manufacturer's Classification

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