Datasheet Linear Technology LTC2937

Manufacturer	Linear Technology
Series	LTC2937

Programmable Six Channel Sequencer and Voltage Supervisor with EEPROM

Datasheets

PDF, 1.6 Mb, Revision: A, File uploaded: Oct 25, 2017

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Prices

Packaging

	LTC2937CUHE#PBF	LTC2937CUHE#TRPBF	LTC2937HUHE#PBF	LTC2937HUHE#TRPBF	LTC2937IUHE#PBF	LTC2937IUHE#TRPBF
N	1	2	3	4	5	6
Package	5x6 QFN-28 Package Outline Drawing	5x6 QFN-28 Package Outline Drawing	5x6 QFN-28 Package Outline Drawing	5x6 QFN-28 Package Outline Drawing	5x6 QFN-28 Package Outline Drawing	5x6 QFN-28 Package Outline Drawing
Package Code	UHE	UHE	UHE	UHE	UHE	UHE
Package Index	05-08-1932	05-08-1932	05-08-1932	05-08-1932	05-08-1932	05-08-1932
Pin Count	28	28	28	28	28	28

Parametrics

Parameters / Models	LTC2937CUHE#PBF	LTC2937CUHE#TRPBF	LTC2937HUHE#PBF	LTC2937HUHE#TRPBF	LTC2937IUHE#PBF	LTC2937IUHE#TRPBF
DC/DC Feedback Node Tracking	no	no	no	no	no	no
Demo Boards	DC2313A,DC2347A	DC2313A,DC2347A	DC2313A,DC2347A	DC2313A,DC2347A	DC2313A,DC2347A	DC2313A,DC2347A
Design Tools	LTpowerPlay ,Linduino File	LTpowerPlay ,Linduino File	LTpowerPlay ,Linduino File	LTpowerPlay ,Linduino File	LTpowerPlay ,Linduino File	LTpowerPlay ,Linduino File
Export Control	no	no	no	no	no	no
Features	Supervisor, EEPROM, I2C/SMBus Interface, Sequencing	Supervisor, EEPROM, I2C/SMBus Interface, Sequencing	Supervisor, EEPROM, I2C/SMBus Interface, Sequencing	Supervisor, EEPROM, I2C/SMBus Interface, Sequencing	Supervisor, EEPROM, I2C/SMBus Interface, Sequencing	Supervisor, EEPROM, I2C/SMBus Interface, Sequencing
Input Monitors	6	6	6	6	6	6
Isupply, mA	1	1	1	1	1	1
Max Controlled Voltage	6V, Higher and Negative Possible	6V, Higher and Negative Possible	6V, Higher and Negative Possible	6V, Higher and Negative Possible	6V, Higher and Negative Possible	6V, Higher and Negative Possible
Number of Supplies	6	6	6	6	6	6
Operating Temperature Range, °C	0 to 70	0 to 70	-40 to 125	-40 to 125	-40 to 85	-40 to 85
Power Good Output	yes	yes	yes	yes	yes	yes
Sequencing	yes	yes	yes	yes	yes	yes
Series FETs Tracking	no	no	no	no	no	no
Supply Voltage Range	2.9V to 16.5V	2.9V to 16.5V	2.9V to 16.5V	2.9V to 16.5V	2.9V to 16.5V	2.9V to 16.5V
Total Supplies	6	6	6	6	6	6
Tracking	no	no	no	no	no	no
Up/Down	Both	Both	Both	Both	Both	Both

Eco Plan

	LTC2937CUHE#PBF	LTC2937CUHE#TRPBF	LTC2937HUHE#PBF	LTC2937HUHE#TRPBF	LTC2937IUHE#PBF	LTC2937IUHE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Application Notes

Download
Using the LTC2937 A Step-by-Step Guide to Sequencing and Supervision
PDF, 1.2 Mb, File published: Mar 9, 2017
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Application Note 162
March 2017
Using the LTC2937
A Step-by-Step Guide to Sequencing and Supervision
Nathan Enger
Introduction This document is broken into the following sections: A Minimalist Circuit Adding Circuit Features DC/DC
CONVERTERS LTC2937 2.2ВµF
0.1ВµF
3.3k VPWR
VDD
WP
ASEL1
ASEL2
ASEL3
MARGB
ON
SPCLK
SHARE_CLK
SCL
SDA
ALERTB
GND The LTCВ®2937 is a power supply sequencer and supervisor with features that make it ideal for power supply
management. It has features that enable seamless cooperation between any number of rails, including timing …

Design Notes

Download
Power Supply Sequencing Simplified &mdash DN1037
PDF, 395 Kb, File published: Dec 4, 2015
Extract from the document
Power Supply Sequencing Simplified
Design Note 1037
Nathan Enger
Introduction
Designing a multiple power supply system is challenging. The power supply designerвЂ™s workload multiplies
with each additional supply rail. The designer must
consider the dynamic environment of coordinated
power supply sequencing and timing, generating
power-on reset, monitoring for faults and responding
appropriately to protect the system. An experienced
designer recognizes that flexibility is key to successfully navigating the ebb and flow as a project moves
from prototype to production. The ideal solution
minimizes the number of hardware and software
changes during development.
The ideal multisupply design tool is a single IC that
resides in a design from beginning to end, requiring no wiring changes through the life cycle of the
product. It autonomously supervises and sequences
multiple power rails, cooperating with other ICs to
seamlessly supervise many power regulators in the
system, and provides fault and reset management.
The designer can use powerful PC-based software
to configure, visualize and debug system behavior in
real time when connected to an I2C bus. The LTC2937 fits this bill. It is a 6-channel voltage sequencer and high accuracy supervisor with …

Articles

Download
Power Supply Sequencing Simplified &mdash LT Journal
PDF, 628 Kb, File published: Aug 11, 2016
Extract from the document
Power Supply Sequencing Simplified
Nathan Enger The challenges in designing a multiple power supply multiply with each additional
supply rail. The designer must consider the dynamic environment of coordinated
power supply sequencing and timing, generating power-on reset, monitoring
for faults and responding appropriately to protect the system. An experienced
designer recognizes that flexibility is key to successfully navigating the ebb and
flow as a project moves from prototype to production. The ideal solution minimizes
the number of hardware and software changes during development.
The ideal multisupply design tool is a
single IC that resides in a design from
beginning to end, requiring no wiring
changes through the life cycle of the
product. It autonomously supervises and
sequences multiple power rails, cooperating with other ICs to seamlessly supervise
many power regulators in the system,
and provides fault and reset management. The designer can use powerful
PC-based software to configure, visualize and debug system behavior in real
time when connected to an I2C bus.
The LTCВ®2937 fits this bill. It is a 6-channel
voltage sequencer and high accuracy
supervisor with EEPROM. Each of the six
channels has two dedicated comparators
to accurately monitor over-and undervoltage conditions to within В±0.75%. …

Model Line

Series: LTC2937 (6)

LTC2937CUHE#PBF LTC2937CUHE#TRPBF LTC2937HUHE#PBF LTC2937HUHE#TRPBF LTC2937IUHE#PBF LTC2937IUHE#TRPBF

Manufacturer's Classification

Monitor, Control and Protection > Supervisory Circuits > Quad or More Supply Monitors
Monitor, Control and Protection > Sequencers, Trackers, and Margining Controllers
Monitor, Control and Protection > Sequencers, Trackers, and Margining Controllers > Power Supply Sequencers > Digital Sequencers

EMS supplier

Slices

Microcontrollers