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LTC3525ISC6-5#TRMPBF

Description
IC REG BOOST 5V 0.4A SYNC SC70-6
Categorysemiconductor    Power management   
File Size528KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LTC3525ISC6-5#TRMPBF Overview

IC REG BOOST 5V 0.4A SYNC SC70-6

LTC3525ISC6-5#TRMPBF Parametric

Parameter NameAttribute value
FunctionBoost
Output configurationjust
TopologyBoost
Output typefixed
Number of outputs1
Voltage - Input (minimum)1V
Voltage - input (maximum)4.5V
Voltage - Output (minimum/fixed)5V
Voltage - Output (maximum)-
Current - Output175mA
Frequency - Switch-
Synchronous rectifieryes
Operating temperature-40°C ~ 125°C (TJ)
Installation typesurface mount
Package/casing6-VSSOP,SC-88,SOT-363
Supplier device packagingSC-70-6
LTC3525-3/
LTC3525-3.3/LTC3525-5
400mA Micropower
Synchronous Step-Up DC/DC
Converter with Output Disconnect
FeaTures
n
n
n
n
n
DescripTion
The LTC
®
3525-3/LTC3525-3.3/LTC3525-5 are high efficiency
synchronous step-up DC/DC converters with output discon-
nect that can start up with an input as low as 0.85V. They
offer a compact, high efficiency alternative to charge pumps
in single cell or dual cell alkaline or Li-Ion applications. Only
three small external components are required. The LTC3525
is offered in fixed output voltages of 3V, 3.3V or 5V.
The device includes a 0.5Ω N-channel MOSFET switch and
a 0.8Ω P-channel synchronous rectifier. Peak switch current
ranges from 150mA to 400mA, depending on load, providing
enhanced efficiency. Quiescent current is an ultralow 7µA,
maximizing battery life in portable applications.
Other features include <1µA shutdown current, anti-
ringing control and thermal shutdown. The LTC3525 is
available in a tiny 6-Lead SC70 package.
List of LTC3525 Options
PART NAME
LTC3525-3
LTC3525-3.3
LTC3525-5
LTC3525D-3.3
LTC3525L-3
INPUT START-UP
VOLTAGE
0.85V
0.85V
0.85V
0.85V
0.7V
OUTPUT
VOLTAGE
3V
3.3V
5V
3.3V
3V
V
OUT
STATUS IN
SHUTDOWN MODE
Output Disconnect
Output Disconnect
Output Disconnect
Pass Through Mode
Output Disconnect
n
n
n
n
n
n
n
n
n
Up to 95% Efficiency
Output Disconnect and Inrush Current Limit
Fixed Output Voltages of 3V, 3.3V or 5V
Delivers 65mA at 3V from a 1V Input
Delivers 60mA at 3.3V from a 1V Input,
or 140mA at 3.3V from a 1.8V Input
Delivers 175mA at 5V from a 3V Input
Burst Mode
®
Operation: I
Q
= 7µA
Only Three External Components
V
IN
> V
OUT
Operation
<1µA Shutdown Current
Antiringing Control
Short-Circuit and Overtemperature Protection
Very Low Profile of 1mm
Tiny 6-Lead SC70 Package
applicaTions
n
n
n
n
MP3 Players
Portable Instruments
Glucose Meters
Digital Cameras
L,
LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners. Patents pending.
Typical applicaTion
L1*
10µH
100
90
LTC3525-3.3
V
IN
OFF ON
1µF
SHDN
GND
SW
V
OUT
GND
V
OUT
3.3V
60mA
10µF
EFFICIENCY (%)
80
70
60
50
40
30
LTC3525-3.3 Efficiency and Power
Loss vs Load Current
100
10
EFFICIENCY
1
POWER LOSS (mW)
V
IN
1V TO 1.6V
POWER LOSS
0.1
V
IN
= 3V
V
IN
= 2.4V
V
IN
= 1.2V
0.1
1
10
LOAD (mA)
100
3525 TA01
*MURATA LQH32CN100K53
20
0.01
0.01
1000
LT3525 • TA02
3525fc
For more information
www.linear.com/LTC3525
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