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DC2642A-B

Description
Power management IC development tool LTC4041 Eval Board
CategoryEmbedded solution    Engineering tools    Power management IC development tools   
File Size2MB,27 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
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DC2642A-B Overview

Power management IC development tool LTC4041 Eval Board

DC2642A-B Parametric

Parameter NameAttribute value
MakerADI
Product CategoryPower Management IC Development Tools
productEvaluation Boards
typePMIC Solutions
Tools for assessmentLTC4041
EncapsulationBulk
Output current2.5 A
seriesLTC4041
Factory packaging quantity1
LTC4041
2.5A Supercapacitor
Backup Power Manager
FEATURES
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DESCRIPTION
The
LTC
®
4041
is a complete supercapacitor backup sys-
tem for 2.9V to 5.5V supply rails. It contains a high cur-
rent step-down DC/DC converter to charge a single super-
capacitor or two supercapacitors in series. When input
power is unavailable, the step-down regulator operates
in reverse as a step-up regulator to backup the system
output from the supercapacitor(s).
The LTC4041’s adjustable input current limit function
reduces charge current to protect the input supply from
overload while an external disconnect switch isolates the
input supply during backup. When the input supply drops
below the adjustable PFI threshold, the 2.5A boost regula-
tor delivers power from the supercapacitor to the system
output.
An optional input overvoltage protection (OVP) circuit
protects the LTC4041 from high voltage damage at the V
IN
pin. An internal supercapacitor balancing circuit maintains
equal voltages across each supercapacitor and limits the
maximum voltage of each supercapacitor to a pre-deter-
mined value. The LTC4041 is available in a low profile
(0.75mm) 24-Lead 4mm × 5mm QFN package.
All registered trademarks and trademarks are the property of their respective owners. Protected
by U.S. Patents, including 6522118, 6570372, 6700364, 8139329.
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2.5A Step-Down Supercapacitor Charger and 2.5A
Step-Up Backup Supply
6.5A Switches for 2.5A Backup from One
Supercapacitor or Two in Series
Input Current Limit Prioritizes Load over
Charge Current
Input Disconnect Switch Isolates Input During Backup
Automatic Seamless Switch-Over to Backup Mode
Internal Supercapacitor Balancer (No External
Resistors)
Programmable Charge Current and Charge Voltage
Input Power Fail Indicator
System Power Good Indicator
Optional OVP Circuitry Protects Device to >60V
Constant Frequency Operation
Thermally Enhanced 24-Lead 4mm × 5mm
QFN Package
APPLICATIONS
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Ride-Through “Dying Gasp” Supplies
High Current Ride-Through 3V to 5V UPS
Power Meters/Industrial Alarms
Servers/Solid State Drives
TYPICAL APPLICATION
Single Supercapacitor 3.3V Backup Application
3.3V
INPUT
SUPPLY
12m
2.2µF
V
IN
OVSNS
PFI
75k
PFO
SYSGD
CAPGD
IMON
CAPFLT
CHGEN BSTEN
PINS NOT USED
IN THIS CIRCUIT:
BAL
CAPFB
GND CAPSEL CPF PROG
1nF
1k
4041 TA01a
1.07M
CLN
IGATE
V
SYS
BSTFB
RSTFB
SW
LTC4041
SCAP
340k
2.2µH
100µF
3.3V
SYSTEM
OUTPUT
Complete Backup Event with
a Single 10F Supercapacitor
V
SYSGD
2V/DIV
0V
V
SYS
1V/DIV
V
IN
1V/DIV
V
SCAP
1V/DIV
0V
P
BACKUP
= 3.3W = 3.3V @ 1A
C
SYS
= 100µF
121k
SUPERCAP
10F
698k
3.8 seconds
348k
600ms/DIV
4041 TA01b
Document Feedback
For more information
www.analog.com
1
Rev 0

DC2642A-B Related Products

DC2642A-B DC2642A-A
Description Power management IC development tool LTC4041 Eval Board Power management IC development tool LTC4041 Eval Board
Maker ADI ADI
Product Category Power Management IC Development Tools Power Management IC Development Tools
product Evaluation Boards Evaluation Boards
type PMIC Solutions PMIC Solutions
Tools for assessment LTC4041 LTC4041
Encapsulation Bulk Bulk
Output current 2.5 A 2.5 A
series LTC4041 LTC4041
Factory packaging quantity 1 1
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