Datasheet Linear Technology LTC3815

Manufacturer	Linear Technology
Series	LTC3815

6A Monolithic Synchronous DC/DC Step-Down Converter with Digital Power System Management

Datasheets

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PDF, 1.9 Mb, Revision: A, File uploaded: Sep 23, 2017

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Prices

Packaging

	LTC3815EUFE#PBF	LTC3815EUFE#TRPBF	LTC3815IUFE#PBF	LTC3815IUFE#TRPBF
N	1	2	3	4
Package	4x6 QFN-38 Package Outline Drawing	4x6 QFN-38 Package Outline Drawing	4x6 QFN-38 Package Outline Drawing	4x6 QFN-38 Package Outline Drawing
Package Code	UFE	UFE	UFE	UFE
Package Index	05-08-1750	05-08-1750	05-08-1750	05-08-1750
Pin Count	38	38	38	38

Parametrics

Parameters / Models	LTC3815EUFE#PBF	LTC3815EUFE#TRPBF	LTC3815IUFE#PBF	LTC3815IUFE#TRPBF
ADC	13-Bit	13-Bit	13-Bit	13-Bit
ADC TUE, %	0.75	0.75	0.75	0.75
DAC	9-Bit	9-Bit	9-Bit	9-Bit
Demo Boards	DC2065A	DC2065A	DC2065A	DC2065A
Export Control	no	no	no	no
Features	PMBus, EEPROM, Fault Logging, Supervisor, Sequencing, Margining, Internal Temp Monitor, Voltage Monitor, Current Monitor, PolyPhase, External Synchronization	PMBus, EEPROM, Fault Logging, Supervisor, Sequencing, Margining, Internal Temp Monitor, Voltage Monitor, Current Monitor, PolyPhase, External Synchronization	PMBus, EEPROM, Fault Logging, Supervisor, Sequencing, Margining, Internal Temp Monitor, Voltage Monitor, Current Monitor, PolyPhase, External Synchronization	PMBus, EEPROM, Fault Logging, Supervisor, Sequencing, Margining, Internal Temp Monitor, Voltage Monitor, Current Monitor, PolyPhase, External Synchronization
Function	DC/DC Regulator With Power System Management	DC/DC Regulator With Power System Management	DC/DC Regulator With Power System Management	DC/DC Regulator With Power System Management
I/O	PMBus/SMBus/I2C	PMBus/SMBus/I2C	PMBus/SMBus/I2C	PMBus/SMBus/I2C
Isupply, mA	5	5	5	5
Monitors	Vin, Iin, Vout, Iout, Temperature and Faults	Vin, Iin, Vout, Iout, Temperature and Faults	Vin, Iin, Vout, Iout, Temperature and Faults	Vin, Iin, Vout, Iout, Temperature and Faults
Number of Outputs	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 85	-40 to 85
Supply Voltage Range	2.25V to 5.5V	2.25V to 5.5V	2.25V to 5.5V	2.25V to 5.5V
Vin Max, V	5.5	5.5	5.5	5.5
Vin Min, V	2.25	2.25	2.25	2.25

Eco Plan

	LTC3815EUFE#PBF	LTC3815EUFE#TRPBF	LTC3815IUFE#PBF	LTC3815IUFE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

Application Notes

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Overview of the EEPROM in LTC PSM Devices &mdash AN145
PDF, 3.0 Mb, File published: May 10, 2014
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Application Note 145
July 2015
Overview of the EEPROM in LTC PSM Devices
Nick Vergunst Introduction convenient List Of All Options Linear TechnologyВ® has a large family of devices that
provide a great deal of power and configurability for all
applications. These parts additionally provide onboard
nonvolatile memory (NVM) in the form of EEPROM to
store and recall configuration parameters and on some
devices provide a fault log and user scratch pad. Option 1A. Manual programming with LTpowerPlayв„ў
Built In Programming Utility (PC->NVM) These Power System Management(PSM) devicesвЂ™ architectures allow them to power up and load the desired
configuration parameters from this NVM autonomously
with no I2C or firmware interaction required.
A common question customers ask is, вЂњNow that I have
settled on a particular configuration, how do I program
this configuration into the chipвЂ™s onboard nonvolatile
memory (NVM).вЂќ
Some available options are presented in rough order of
increasing complexity throughout the document.
NOTE: Linear Technology strongly recommends
Option 1 for preproduction prototyping, and
OptionВ 2, Option 3 or Option 4 for higher volume
production. Option 5 is a convenient method to
program a small quantity of loose ICs prior to board …

Design Notes

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6A Monolithic Synchronous DC/DC Step-Down Converter with Digital Power System Management &mdash DN554
PDF, 231 Kb, File published: Jul 27, 2016
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6A Monolithic Synchronous DC/DC Step-Down Converter
with Digital Power System Management
Design Note 554
Haoran Wu
Digital Power System Management (PSM) controllers usually target high current point-of-load (POL)
applications. Lower current applications, with up to
6A load current, can also benefit from PSM features.
The LTC В®3815 is a 6A monolithic synchronous stepdown converter with digital power monitoring and
control features. input pin. The operating supply voltage range is from
2.25V to 5.5V, making it suitable for operation from
2.5V, 3.3V or 5V input rails or lithium-ion batteries.
6A Converter at 1MHz
FigureВ 1 shows a typical application with an input
voltage range of 2.25V to 5.5V and an output of
1.8V at 6A. The LTC3815 uses a phase lockable controlled ontime, constant frequency, current mode architecture,
that provides extremely fast load step transient
response with minimum output capacitance. It also
enables operation at the very low on-times required
to regulate low output voltages at high switching
frequencies for minimum solution size. The output
voltage is programmable from 0.4V to 72% of the
input voltage with a single external resistor or with an
external voltage reference through the reference (REF) The efficiency curve for the circuit in FigureВ 1 is …

Model Line

Series: LTC3815 (4)

LTC3815EUFE#PBF LTC3815EUFE#TRPBF LTC3815IUFE#PBF LTC3815IUFE#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Internal Power Switch Buck
Power Management > Switching Regulator > Digitally Programmable Regulators
Monitor, Control and Protection > Digital Power System Management > DC/DC Regulator With Power System Management