Datasheet Linear Technology LT1640A

Manufacturer	Linear Technology
Series	LT1640A

Negative Voltage Hot Swap Controller

Datasheets

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

Extract from the document

Prices

Packaging

	LT1640AHCN8#PBF	LT1640AHCS8#PBF	LT1640AHCS8#TRPBF	LT1640AHIN8#PBF	LT1640AHIS8#PBF	LT1640AHIS8#TRPBF	LT1640ALCN8#PBF	LT1640ALCS8#PBF	LT1640ALCS8#TRPBF	LT1640ALIN8#PBF	LT1640ALIS8#PBF	LT1640ALIS8#TRPBF
N	1	2	3	4	5	6	7	8	9	10	11	12
Package	N-8 Package Outline Drawing	SO-8 Package Outline Drawing	SO-8 Package Outline Drawing	N-8 Package Outline Drawing	SO-8 Package Outline Drawing	SO-8 Package Outline Drawing	N-8 Package Outline Drawing	SO-8 Package Outline Drawing	SO-8 Package Outline Drawing	N-8 Package Outline Drawing	SO-8 Package Outline Drawing	SO-8 Package Outline Drawing
Package Code	N	S8	S8	N	S8	S8	N	S8	S8	N	S8	S8
Package Index	05-08-1510 (N8)	05-08-1610 (S8)	05-08-1610 (S8)	05-08-1510 (N8)	05-08-1610 (S8)	05-08-1610 (S8)	05-08-1510 (N8)	05-08-1610 (S8)	05-08-1610 (S8)	05-08-1510 (N8)	05-08-1610 (S8)	05-08-1610 (S8)
Pin Count	8	8	8	8	8	8	8	8	8	8	8	8

Parametrics

Parameters / Models	LT1640AHCN8#PBF	LT1640AHCS8#PBF	LT1640AHCS8#TRPBF	LT1640AHIN8#PBF	LT1640AHIS8#PBF	LT1640AHIS8#TRPBF	LT1640ALCN8#PBF	LT1640ALCS8#PBF	LT1640ALCS8#TRPBF	LT1640ALIN8#PBF	LT1640ALIS8#PBF	LT1640ALIS8#TRPBF
Active Limiting	no	no	no	no	no	no	no	no	no	no	no	no
Circuit Breaker Accuracy, %	20	20	20	20	20	20	20	20	20	20	20	20
Circuit Breaker Threshold	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
Export Control	no	no	no	no	no	no	no	no	no	no	no	no
Fault Output	no	no	no	no	no	no	no	no	no	no	no	no
Foldback	no	no	no	no	no	no	no	no	no	no	no	no
In-Rush Current	Miller Cap	Miller Cap	Miller Cap	Miller Cap	Miller Cap	Miller Cap	Miller Cap	Miller Cap	Miller Cap	Miller Cap	Miller Cap	Miller Cap
Isupply, mA	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3
OV	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	-40 to 85	-40 to 85	-40 to 85	0 to 70	0 to 70	0 to 70	-40 to 85	-40 to 85	-40 to 85
Power Good Output	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
Sequencing	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
Vin Range	-10V to -80V	-10V to -80V	-10V to -80V	-10V to -80V	-10V to -80V	-10V to -80V	-10V to -80V	-10V to -80V	-10V to -80V	-10V to -80V	-10V to -80V	-10V to -80V

Eco Plan

	LT1640AHCN8#PBF	LT1640AHCS8#PBF	LT1640AHCS8#TRPBF	LT1640AHIN8#PBF	LT1640AHIS8#PBF	LT1640AHIS8#TRPBF	LT1640ALCN8#PBF	LT1640ALCS8#PBF	LT1640ALCS8#TRPBF	LT1640ALIN8#PBF	LT1640ALIS8#PBF	LT1640ALIS8#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Articles

Download
48 Volt Hot Swap Controller for Negative Voltages &mdash LT Journal
PDF, 240 Kb, File published: Aug 1, 1998
Extract from the document
DESIGN FEATURES 48 Volt Hot Swap Controller
for Negative Voltages by Henry Yun
and Robert Reay Introduction
As supply voltages for PC boards continue to drop, designers face the
difficult task of minimizing the voltage drops through distributed power
systems. At operating voltages of 3.3V
or lower, the voltage drops across
power busses, connector pins and
inrush control circuitry can cause a
supply voltage to drop out of tolerance. A solution to this problem is to
distribute power at a high voltage,
commonly 48V, and then step the
voltage down to the final desired value
on each board in the system, using
power modules.
Most 48V power modules require
an input bypass capacitor with a typical value of hundreds of microfarads.
When the board is hot-plugged into a
live 48V power rail, the input capacitor can draw huge inrush currents as
it charges. The inrush current can
cause permanent damage to the
boardвЂ™s components and create
glitches on the system power supply …

Model Line

Series: LT1640A (12)

LT1640AHCN8#PBF LT1640AHCS8#PBF LT1640AHCS8#TRPBF LT1640AHIN8#PBF LT1640AHIS8#PBF LT1640AHIS8#TRPBF LT1640ALCN8#PBF LT1640ALCS8#PBF LT1640ALCS8#TRPBF LT1640ALIN8#PBF LT1640ALIS8#PBF LT1640ALIS8#TRPBF

Manufacturer's Classification

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

EMS supplier

Slices

Microcontrollers