Datasheet Linear Technology LTC2924

Manufacturer	Linear Technology
Series	LTC2924

Quad Power Supply Sequencer

Datasheets

PDF, 377 Kb, Revision: C, File uploaded: Oct 25, 2017

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Prices

Packaging

	LTC2924CGN#PBF	LTC2924CGN#TRPBF	LTC2924IGN#PBF	LTC2924IGN#TRPBF
N	1	2	3	4
Package	SSOP-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	SSOP-16 Package Outline Drawing
Package Code	GN	GN	GN	GN
Package Index	05-08-1641 (GN16)	05-08-1641 (GN16)	05-08-1641 (GN16)	05-08-1641 (GN16)
Pin Count	16	16	16	16

Parametrics

Parameters / Models	LTC2924CGN#PBF	LTC2924CGN#TRPBF	LTC2924IGN#PBF	LTC2924IGN#TRPBF
Demo Boards	DC818A	DC818A	DC818A	DC818A
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Export Control	no	no	no	no
Features	Sequencing	Sequencing	Sequencing	Sequencing
Isupply, mA	1.5	1.5	1.5	1.5
Number of Supplies	6	6	6	6
Operating Temperature Range, °C	0 to 70	0 to 70	-40 to 85	-40 to 85
Power Good Output	no	no	no	no
Sequencing	yes	yes	yes	yes
Supply Voltage Range	3V to 6V	3V to 6V	3V to 6V	3V to 6V
Total Supplies	6	6	6	6
Tracking	no	no	no	no

Eco Plan

	LTC2924CGN#PBF	LTC2924CGN#TRPBF	LTC2924IGN#PBF	LTC2924IGN#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

Design Notes

Download
Accurate Power Supply Sequencing Prevents System Damage &mdash DN384
PDF, 82 Kb, File published: Jan 11, 2006
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Accurate Power Supply Sequencing Prevents System Damage
Design Note 384
Jeff Heath and Akin Kestelli
Introduction
Many complex systemsвЂ”such as telecom equipment,
memory modules, optical systems, networking equipment, servers and base stationsвЂ”use FPGAs and other
digital ICs that require multiple voltage rails that must
start up and shut down in a specific order, otherwise
the ICs can be damaged. The LTCВ®2924 is a simple and
compact solution to power supply sequencing in a 16pin SSOP package (see Figures 1 and 2).
How it Works
Four power supplies can be easily sequenced using
a single LTC2924 and multiple LTC2924s can be just
as easily cascaded to sequence any number of power
supplies. With slightly reduced functionality, six power
supplies can be sequenced with a single LTC2924.
The LTC2924 controls the start-up and shutdown sequence and ramp rates of four power supply channels
via output pins (OUT1 to OUT4). Each OUT pin uses a
10ВµA current source connected to an internal charge
pump and a low resistance switch to GND. This combination makes the outputs flexible enough to connect
them directly to many power supply shutdown pins or
to external N-channel MOSFET switches. The LTC2924 monitors the output voltage of each
sequenced power supply via four input pins (IN1 to …

Articles

Download
Flexible Power Supply Sequencing and Monitoring &mdash LT Journal
PDF, 491 Kb, File published: Mar 25, 2005
Extract from the document
DESIGN FEATURES Flexible Power Supply Sequencing
by Jeff Heath and Akin Kestelli
and Monitoring
Introduction require multiple voltage rails that
must start up and shut down in a
speciп¬Ѓc order, otherwise the ICs can
be damaged. The LTC2924 is a simple
and compact solution to power supply
sequencing in a 16-pin SSOP package
(see Figure 1).
Sure, alternative sequencing solutions are available, but few, if any, can The LTC2924 is a complete power supply sequencer and supervisor solution
for multivoltage-rail systems, such
as telecommunications equipment,
memory modules, optical systems,
networking equipment, servers, and
base stations. The FPGAs and other
digital ICs used in these applications
Q1 1V VON = 0.93V
VOFF = 0.91V 0.1ВµF
Q2 3V VON = 2.79V
VOFF = 2.73V 0.1ВµF
Q3 5V VON = 4.21V
VOFF = 3.76V 0.1ВµF 0.1ВµF …

Model Line

Series: LTC2924 (4)

LTC2924CGN#PBF LTC2924CGN#TRPBF LTC2924IGN#PBF LTC2924IGN#TRPBF

Manufacturer's Classification

Monitor, Control and Protection > Sequencers, Trackers, and Margining Controllers
Monitor, Control and Protection > Sequencers, Trackers, and Margining Controllers > Power Supply Sequencers > Analog Sequencers

EMS supplier

Slices

Microcontrollers