EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC1266CS-3.3

Description
Synchronous Regulator Controller for N- or P-Channel MOSFETs
CategoryPower/power management    The power supply circuit   
File Size277KB,20 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC1266CS-3.3 Overview

Synchronous Regulator Controller for N- or P-Channel MOSFETs

LTC1266CS-3.3 Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
Parts packaging codeSOIC
package instruction0.150 INCH, PLASTIC, SOP-16
Contacts16
Manufacturer packaging codeS
Reach Compliance Code_compli
ECCN codeEAR99
Is SamacsysN
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyCONSTANT OFF TIME
Maximum input voltage18 V
Minimum input voltage3.5 V
Nominal input voltage10 V
JESD-30 codeR-PDSO-G16
JESD-609 codee0
length9.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals16
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current0.05 A
Nominal output voltage3.3 V
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height1.752 mm
Maximum supply current (Isup)3 mA
surface mountYES
Switch configurationPUSH-PULL
Maximum switching frequency400 kHz
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width3.9 mm
Base Number Matches1
LTC1266
LTC1266-3.3/LTC1266-5
Synchronous Regulator
Controller for
N- or P-Channel MOSFETs
DESCRIPTIO
The LTC
®
1266 series is a family of synchronous switching
regulator controllers featuring automatic Burst Mode
TM
operation to maintain high efficiencies at low output
currents. These devices drive external power MOSFETs at
switching frequencies up to 400kHz using a constant off-
time current mode architecture providing constant ripple
current in the inductor. They can drive either an N-channel
or a P-channel topside MOSFET.
The operating current level is user-programmable via an
external current sense resistor. Wide input supply range
allows operation from 3.5V to 18V (20V maximum).
Constant off-time architecture provides low dropout regu-
lation limited only by the R
DS(ON)
of the topside MOSFET
(when using the P-channel) and the resistance of the
inductor and current sense resistor.
The LTC1266 series combines synchronous switching for
maximum efficiency at high currents with an automatic
low current operating mode, called Burst Mode operation,
which reduces switching losses. Standby power is re-
duced to only 1mW at V
IN
= 5V (at I
OUT
= 0). Load currents
in Burst Mode operation are typically 0mA to 500mA.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a trademark of Linear Technology Corporation.
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
s
Ultra-High Efficiency: Over 95% Possible
Drives N-Channel MOSFET for High Current or
P-Channel MOSFET for Low Dropout
Pin Selectable Burst Mode Operation
1% Output Accuracy (LTC1266A)
Pin Selectable Phase of Topside Driver for Boost
or Step-Down Operation
Wide V
IN
Range: 3.5V to 20V
On-Chip Low-Battery Detector
High Efficiency Maintained over Large Current Range
Low 170µA Standby Current at Light Loads
Current Mode Operation for Excellent Line and Load
Transient Response
Logic Controlled Micropower Shutdown: I
Q
< 40µA
Short Circuit Protection
Synchronous Switching with Nonoverlaping Gate Drives
Available in 16-Pin Narrow SO Package
APPLICATI
s
s
s
s
s
S
Notebook and Palmtop Computers
Portable Instruments
Cellular Telephones
DC Power Distribution Systems
GPS Systems
TYPICAL APPLICATI
V
IN
4V TO 9V
D2
MBR0530T1
+
C
IN
100µF
×2
V
IN
PWR V
IN
LB
OUT
TDRIVE
SENSE
+
SENSE
BDRIVE
PGND
1000pF
N-CHANNEL
Si9410
N-CHANNEL
Si9410
LOW BAT OUT
C
B
0.1µF
L*
5µH
LOW BAT IN
LB
IN
PINV
LTC1266-3.3
0V = NORMAL
>1.5V = SHUTDOWN
R
C
470Ω
C
C
3300pF
SHDN
I
TH
C
T
BINH
SGND
R
SENSE
0.02Ω
EFFICIENCY (%)
100k
V
OUT
3.3V
5A
C
OUT
330µF
×
2
+
D1
MBRS130LT3
LTC1266 • TA01
C
T
180pF
*COILTRONICS CTXO212801
Figure 1. High Efficiency Step-Down Converter
U
UO
UO
LTC1266-3.3 Efficiency
100
V
IN
= 5V
95
90
85
80
0.01
0.1
1
LOAD CURRENT (A)
5
LTC1266 • TA02
1

LTC1266CS-3.3 Related Products

LTC1266CS-3.3 LTC1266CS-5 LTC1266ACS LTC1266-33
Description Synchronous Regulator Controller for N- or P-Channel MOSFETs Synchronous Regulator Controller for N- or P-Channel MOSFETs Synchronous Regulator Controller for N- or P-Channel MOSFETs Synchronous Regulator Controller for N- or P-Channel MOSFETs
Brand Name Linear Technology Linear Technology Linear Technology -
Is it Rohs certified? incompatible incompatible incompatible -
Parts packaging code SOIC SOIC SOIC -
package instruction 0.150 INCH, PLASTIC, SOP-16 SOP, SOP16,.25 SOP, SOP16,.25 -
Contacts 16 16 16 -
Manufacturer packaging code S S S -
Reach Compliance Code _compli _compli _compli -
ECCN code EAR99 EAR99 EAR99 -
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER -
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE -
Control Technology CONSTANT OFF TIME CONSTANT OFF TIME CONSTANT OFF TIME -
Maximum input voltage 18 V 18 V 18 V -
Minimum input voltage 3.5 V 3.5 V 3.5 V -
Nominal input voltage 10 V 10 V 10 V -
JESD-30 code R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 -
JESD-609 code e0 e0 e0 -
length 9.9 mm 9.9 mm 9.9 mm -
Humidity sensitivity level 1 1 1 -
Number of functions 1 1 1 -
Number of terminals 16 16 16 -
Maximum operating temperature 70 °C 70 °C 70 °C -
Maximum output current 0.05 A 0.05 A 0.05 A -
Nominal output voltage 3.3 V 5 V 1.25 V -
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY -
encapsulated code SOP SOP SOP -
Encapsulate equivalent code SOP16,.25 SOP16,.25 SOP16,.25 -
Package shape RECTANGULAR RECTANGULAR RECTANGULAR -
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE -
Peak Reflow Temperature (Celsius) 235 235 235 -
Certification status Not Qualified Not Qualified Not Qualified -
Maximum seat height 1.752 mm 1.752 mm 1.752 mm -
Maximum supply current (Isup) 3 mA 3 mA 3 mA -
surface mount YES YES YES -
Switch configuration PUSH-PULL PUSH-PULL PUSH-PULL -
Maximum switching frequency 400 kHz 400 kHz 400 kHz -
technology CMOS CMOS CMOS -
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL -
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) -
Terminal form GULL WING GULL WING GULL WING -
Terminal pitch 1.27 mm 1.27 mm 1.27 mm -
Terminal location DUAL DUAL DUAL -
Maximum time at peak reflow temperature 20 20 20 -
width 3.9 mm 3.9 mm 3.9 mm -
Ask for advice
I bought a FPGA black gold development board some time ago. Today I am doing an experiment with DS18B20. It was fine at first, but after power off, I found that there was only 30+ ohms between pin 160...
hydrogen1989 FPGA/CPLD
How to run a program larger than 4KB?
If a program larger than 4KB is burned into NAND FLASH and needs to be run, the code larger than 4KB must be copied to SDRAM for execution? How can this be copied? -%-294478-%-...
shaoh.12 Embedded System
Please recommend a domestically produced ultra-low power microcontroller
[i=s] This post was last edited by yl20084784 on 2017-3-20 17:22 [/i] As the title: Requirements: 1 Low price, easy to buy 2 Low power consumption 3 Rich information 4 Downloader is cheap and easy to ...
yl20084784 stm32/stm8
Programming King 10TB code library
King of Programming 10TB code library http://code.kingofcoders.com 10TB code Search engine http://search.kingofcoders.com...
pmp_2008 Embedded System
Regarding the issue of converting hexadecimal data into decimal data
I collected two bytes of hexadecimal data and stored them in an unsigned char a[2] array, with the high byte in a[1] and the low byte in a[0]. Now I want to convert them into decimal data and store th...
ttxs06 Microchip MCU
I would like to ask you guys, how to modify the sct file when using IntRegister?
I wrote a serial port interrupt handling function myself. After registering it with UARTIntRegister, I found that the interrupt handling function was not called.I saw a previous post mentioning "When ...
zhypabc Microcontroller MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 770  49  2669  1393  2732  16  1  54  29  56 
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