EEWORLDEEWORLDEEWORLD

Part Number

Search

LT1776CS8

Description
Wide Input Range, High Efficiency, Step-Down Switching Regulator
CategoryPower/power management    The power supply circuit   
File Size154KB,20 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LT1776CS8 Overview

Wide Input Range, High Efficiency, Step-Down Switching Regulator

LT1776CS8 Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeSOIC
package instructionSOP, SOP8,.25
Contacts8
Manufacturer packaging codeS8
Reach Compliance Code_compli
ECCN codeEAR99
Is SamacsysN
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage60 V
Minimum input voltage7.4 V
Nominal input voltage40 V
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length4.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current1 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.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 frequency230 kHz
technologyBIPOLAR
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
LT1776
Wide Input Range,
High Efficiency, Step-Down
Switching Regulator
FEATURES
s
s
s
s
DESCRIPTIO
s
s
s
s
s
Wide Input Range: 7.4V to 40V
Tolerates Input Transients to 60V
700mA Peak Switch Rating
Adaptive Switch Drive Maintains Efficiency at High
Load Without Pulse Skipping at Light Load
True Current Mode Control
200kHz Fixed Operating Frequency
Synchronizable to 400kHz
Low Supply Current in Shutdown: 30µA
Available in 8-Pin SO and PDIP Packages
The LT
®
1776 is a wide input range, high efficiency Buck
(step-down) switching regulator. The monolithic die in-
cludes all oscillator, control and protection circuitry. The
part can accept input voltages as high as 60V and contains
an output switch rated at 700mA peak current. Current
mode control delivers excellent dynamic input supply
rejection and short-circuit protection.
The LT1776 contains several features to enhance effi-
ciency. The internal control circuitry is normally powered
via the V
CC
pin, thereby minimizing power drawn directly
from the V
IN
supply (see Applications Information). The
action of the LT1776 switch circuitry is also load depen-
dent. At medium to high loads, the output switch circuitry
maintains fast rise time for good efficiency. At light loads,
rise time is deliberately reduced to avoid pulse skipping
behavior.
The available SO-8 package and 200kHz switching fre-
quency allow for minimal PC board area requirements.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
Automotive DC/DC Converters
Cellular Phone Battery Charger Accessories
IEEE 1394 Step-Down Converters
TYPICAL APPLICATIO
V
IN
8V TO 40V
1
5
V
IN
SHDN
V
CC
V
SW
39µF
63V
6
LT1776
7
FB
8
V
C
2
3
90
80
100µH*
MBR160
100µF
10V
EFFICIENCY (%)
+
+
5V
400mA
36.5k
1%
70
60
50
40
SYNC
2200pF
22k
100pF
12.1k
1%
GND
4
*43T #30 ON MAGNETICS
MPP #55030
1776 F01
V
IN
= 10V
V
IN
= 20V
30
V
IN
= 30V
V
IN
= 40V
20
1
Figure 1
U
Efficiency vs V
IN
and I
LOAD
10
100
LOAD CURRENT (mA)
1000
1776 TA01
U
U
1

LT1776CS8 Related Products

LT1776CS8 LT1776IS8 LT1776IN8 LT1776I LT1776CN8 LT1776C LT1776
Description Wide Input Range, High Efficiency, Step-Down Switching Regulator Wide Input Range, High Efficiency, Step-Down Switching Regulator Wide Input Range, High Efficiency, Step-Down Switching Regulator Wide Input Range, High Efficiency, Step-Down Switching Regulator Wide Input Range, High Efficiency, Step-Down Switching Regulator Wide Input Range, High Efficiency, Step-Down Switching Regulator Wide Input Range, High Efficiency, Step-Down Switching Regulator
Brand Name Linear Technology Linear Technology Linear Technology - Linear Technology - -
Is it Rohs certified? incompatible incompatible incompatible - incompatible - -
Maker Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) - Linear ( ADI ) - -
Parts packaging code SOIC SOIC DIP - DIP - -
package instruction SOP, SOP8,.25 0.150 INCH, PLASTIC, SO-8 DIP, DIP8,.3 - DIP, DIP8,.3 - -
Contacts 8 8 8 - 8 - -
Manufacturer packaging code S8 S8 N - N - -
Reach Compliance Code _compli _compli _compli - _compli - -
ECCN code EAR99 EAR99 EAR99 - EAR99 - -
Is Samacsys N N N - N - -
Analog Integrated Circuits - Other Types SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR - SWITCHING REGULATOR - -
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE - CURRENT-MODE - -
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION - PULSE WIDTH MODULATION - -
Maximum input voltage 60 V 60 V 60 V - 60 V - -
Minimum input voltage 7.4 V 7.4 V 7.4 V - 7.4 V - -
Nominal input voltage 40 V 40 V 40 V - 40 V - -
JESD-30 code R-PDSO-G8 R-PDSO-G8 R-PDIP-T8 - R-PDIP-T8 - -
JESD-609 code e0 e0 e0 - e0 - -
Humidity sensitivity level 1 1 1 - 1 - -
Number of functions 1 1 1 - 1 - -
Number of terminals 8 8 8 - 8 - -
Maximum operating temperature 70 °C 85 °C 85 °C - 70 °C - -
Maximum output current 1 A 1 A 1 A - 0.7 A - -
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY - PLASTIC/EPOXY - -
encapsulated code SOP SOP DIP - DIP - -
Encapsulate equivalent code SOP8,.25 SOP8,.25 DIP8,.3 - DIP8,.3 - -
Package shape RECTANGULAR RECTANGULAR RECTANGULAR - RECTANGULAR - -
Package form SMALL OUTLINE SMALL OUTLINE IN-LINE - IN-LINE - -
Peak Reflow Temperature (Celsius) 235 235 NOT SPECIFIED - NOT SPECIFIED - -
Certification status Not Qualified Not Qualified Not Qualified - Not Qualified - -
Maximum seat height 1.75 mm 1.75 mm 3.937 mm - 3.937 mm - -
surface mount YES YES NO - NO - -
Switch configuration BUCK BUCK BUCK - BUCK - -
Maximum switching frequency 230 kHz 230 kHz 230 kHz - 230 kHz - -
technology BIPOLAR BIPOLAR BIPOLAR - BIPOLAR - -
Temperature level COMMERCIAL INDUSTRIAL INDUSTRIAL - COMMERCIAL - -
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) - Tin/Lead (Sn/Pb) - -
Terminal form GULL WING GULL WING THROUGH-HOLE - THROUGH-HOLE - -
Terminal pitch 1.27 mm 1.27 mm 2.54 mm - 2.54 mm - -
Terminal location DUAL DUAL DUAL - DUAL - -
Maximum time at peak reflow temperature 20 20 NOT SPECIFIED - NOT SPECIFIED - -
width 3.9 mm 3.9 mm 7.62 mm - 7.62 mm - -
Base Number Matches 1 1 1 - 1 - -
An expert DIY antenna...
Will this work?...
banana RF/Wirelessly
Are 3G and 2G AT commands the same?
I have never used the AT command, so I have a simple question: Are the AT commands for 3G and 2G the same?...
yoyo_xmu Embedded System
Embedded System Linux Application Development Software Engineer Recruitment
Job Description: 1. Develop ARM platform Linux driver. Job Requirements: 1. Bachelor's degree in computer science or relevant work experience; 2. Familiar with Linux system development; 3. Familiar wi...
soluble Linux and Android
TI Cup 2019 National Undergraduate Electronic Design Competition National Review Results Announcement
[i=s]This post was last edited by Rambo on 2019-9-2 11:48[/i]After evaluation by the expert group of the National College Student Electronic Design Competition (referred to as the Competition) and app...
兰博 Electronics Design Contest
Six classic simulation examples
Contains six classic simulation examples, such as running lights, revolving lights, digital clocks, etc. Circuit diagrams and source code are all presented. Good things are to be shared with everyone....
songbo Embedded System
About adjusting the duty cycle of 2812PWM
I want to set the PWM period to 0xfff and the modulation value to the digital value after AD conversion, so that the PWM duty cycle changes with the result of AD, so I used such an assignment statemen...
yxj2046 Microcontroller MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 1990  360  2500  377  2368  41  8  51  48  2 
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