EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC1265IS

Description
1.2A, High Efficiency Step-Down DC/DC Converter
CategoryPower/power management    The power supply circuit   
File Size232KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC1265IS Overview

1.2A, High Efficiency Step-Down DC/DC Converter

LTC1265IS Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeSOIC
package instructionSOP, SOP14,.25
Contacts14
Manufacturer packaging codeS
Reach Compliance Codenot_compliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyCONSTANT OFF TIME
Maximum input voltage12 V
Minimum input voltage5.4 V
Nominal input voltage10 V
JESD-30 codeR-PDSO-G14
JESD-609 codee0
length8.65 mm
Humidity sensitivity level1
Number of functions1
Number of terminals14
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current1.2 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP14,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height1.75 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency700 kHz
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width3.9 mm
LTC1265/LTC1265-3.3/LTC1265-5
1.2A, High Efficiency
Step-Down DC/DC Converter
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
s
s
High Efficiency: Up to 95%
Current Mode Operation for Excellent Line and Load
Transient Response
Internal 0.3
Power Switch (V
IN
= 10V)
Short-Circuit Protection
Low Dropout Operation: 100% Duty Cycle
Low-Battery Detector
Low 160µA Standby Current at Light Loads
Active-High Micropower Shutdown: I
Q
< 15µA
Peak Inductor Current Independent of Inductor Value
Available in 14-pin SO Package
The LTC
®
1265 is a monolithic step-down current mode
DC/DC converter featuring Burst Mode
TM
operation at low
output current. The LTC1265 incorporates a 0.3Ω switch
(V
IN
=10V) allowing up to 1.2A of output current.
Under no load condition, the converter draws only 160µA.
In shutdown it typically draws a mere 5µA making this
converter ideal for current sensitive applications. In drop-
out the internal P-channel MOSFET switch is turned on
continuously maximizing the life of the battery source. The
LTC1265 incorporates automatic power saving Burst Mode
operation to reduce gate charge losses when the load
currents drop below the level required for continuous
operation.
The inductor current is user-programmable via an external
current sense resistor. Operation up to 700kHz permits
the use of small surface mount inductors and capacitors.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a trademark of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
s
s
s
5V to 3.3V Conversion
Distributed Power Systems
Step-Down Converters
Inverting Converters
Memory Backup Supply
Portable Instruments
Battery-Powered Equipment
Cellular Telephones
TYPICAL APPLICATIO
V
IN
5.4V TO
12V
+
C
IN
†††
68µF
20V
0.1µF
PWR V
IN
SHDN
V
IN
SW
L1*
33µH
D1
R
SENSE
**
0.1Ω
1k
LTC1265-5
I
TH
C
T
PGND
SENSE
+
V
OUT
5V
1A
EFFICIENCY (%)
+
C
OUT
220µF
10V
††
3900pF
130pF
1000pF
SENSE
SGND
* COILTRONICS CTX33-4
** IRC LRC2010-01-R100-J
MBRS130LT3
††
AVX TPSE227K010
†††
AVX TPSE686K020
LTC1265-FO1
Figure 1. High Efficiency Step-Down Converter
U
LTC1265-5 Efficiency
100
95
90
V
IN
= 12V
85
80
75
70
0.01
L = 33µH
V
OUT
= 5V
R
SENSE
= 0.1Ω
C
T
= 130pF
0.10
LOAD CURRENT (A)
1.00
LTC1265 TA01
U
U
V
IN
= 6V
V
IN
= 9V
1

LTC1265IS Related Products

LTC1265IS LTC1265I LTC1265CS-5 LTC1265CS-3.3 LTC1265CS LTC1265C LTC1265-5 LTC1265-3.3 LTC1265
Description 1.2A, High Efficiency Step-Down DC/DC Converter 1.2A, High Efficiency Step-Down DC/DC Converter 1.2A, High Efficiency Step-Down DC/DC Converter 1.2A, High Efficiency Step-Down DC/DC Converter 1.2A, High Efficiency Step-Down DC/DC Converter 1.2A, High Efficiency Step-Down DC/DC Converter 1.2A, High Efficiency Step-Down DC/DC Converter 1.2A, High Efficiency Step-Down DC/DC Converter 1.2A, High Efficiency Step-Down DC/DC Converter
A collection of outstanding works from the National Undergraduate Electronic Design Competition
[i=s]This post was last edited by paulhyde on 2014-9-15 03:12[/i]Free information, hope it helps your report~ :)...
筱菱1046 Electronics Design Contest
Does anyone know what the model of the 6-pin ACDC switching power supply control IC with the silk screen 40E48a is? Urgent
[i=s] This post was last edited by kenleung on 2014-11-22 16:07 [/i] What type of IC is the IC (SOT-236) with the silkscreen 40E48a? It is used to control 220V AC to 5V DC....
kenleung Power technology
Xin Banzhu is here to issue new coins: What kind of programs do you write? (limited to three days)
[i=s]This post was last edited by Xin Xin on 2015-8-25 14:54[/i] [b][size=4][color=Blue][color=Red]Limited time: three days, limited time: three days! Damn, I'm not deliberately playing the hunger sal...
辛昕 Programming Basics
Some issues in using modelsim to simulate and test schematic files in quartus ii
Hello everyone, I hope all the FPGA experts can help me solve a problem. When using modelsim to simulate the schematic file in quartus ii, you need to convert the schematic file into a .v file first, ...
xuhongming FPGA/CPLD
The problem with chipscope core
I recently encountered this problem when doing an experiment. In an ISE project, if I use the xco file of the chipscope core for comprehensive implementation, there will be no problem. If I use the v ...
eeleader FPGA/CPLD
stc11f02 programming problem? ?
My stc11f02 can only be programmed once.I have changed 3 chips and it is the same all the time. When I programmed it for the second time, the serial port indicator light did not flash. I don't know wh...
wyflzw stm32/stm8

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1550  2106  14  2670  553  32  43  1  54  12 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号