EEWORLDEEWORLDEEWORLD

Part Number

Search

LT1767EMS8-3.3#TR

Description
Conv DC-DC 3V to 25V Synchronous Step Down Single-Out 3.3V 1.5A 8-Pin MSOP T/R
File Size236KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LT1767EMS8-3.3#TR Overview

Conv DC-DC 3V to 25V Synchronous Step Down Single-Out 3.3V 1.5A 8-Pin MSOP T/R

LT1767EMS8-3.3#TR Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusLTB
HTS8542.39.00.01
SVHCYes
SVHC Exceeds ThresholdYes
TypeSynchronous Step Down
Output TypeFixed
Switching Frequency (kHz)1400
Switching RegulatorYes
Number of Outputs1
Output Voltage (V)3.3
Maximum Output Current (A)1.5
Minimum Input Voltage (V)3
Maximum Input Voltage (V)25
Operating Supply Voltage (V)3 to 25
Typical Switch Current (A)2
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
Supplier Temperature GradeExtended
PackagingTape and Reel
Pin Count8
Standard Package NameMSOP
Supplier PackageMSOP
MountingSurface Mount
Package Height0.86
Package Length3
Package Width3
PCB changed8
Lead ShapeGull-wing
LT1767/LT1767-1.8/
LT1767-2.5/LT1767-3.3/LT1767-5
Monolithic 1.5A, 1.25MHz
Step-Down Switching Regulators
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
1.5A Switch in a Small MSOP Package
Constant 1.25MHz Switching Frequency
High Power Exposed Pad (MS8E) Package
Wide Operating Voltage Range: 3V to 25V
High Efficiency 0.22Ω Switch
1.2V Feedback Reference Voltage
Fixed Output Voltages of 1.8V, 2.5V, 3.3V, 5V
2% Overall Output Tolerance
Uses Low Profile Surface Mount Components
Low Shutdown Current: 6µA
Synchronizable to 2MHz
Current Mode Loop Control
Constant Maximum Switch Current Rating at All Duty
Cycles*
The LT
®
1767 is a 1.25MHz monolithic buck switching
regulator. A high efficiency 1.5A, 0.22Ω switch is included
on the die together with all the control circuitry required to
complete a high frequency, current mode switching regu-
lator. Current mode control provides fast transient re-
sponse and excellent loop stability.
New design techniques achieve high efficiency at high
switching frequencies over a wide operating range. A low
dropout internal regulator maintains consistent perfor-
mance over a wide range of inputs from 24V systems to Li-
Ion batteries. An operating supply current of 1mA im-
proves efficiency, especially at lower output currents.
Shutdown reduces quiescent current to 6µA. Maximum
switch current remains constant at all duty cycles. Syn-
chronization allows an external logic level signal to in-
crease the internal oscillator from 1.4MHz to 2MHz.
The LT1767 is available in an 8-pin MSOP fused leadframe
package and a low thermal resistance exposed pad pack-
age. Full cycle-by-cycle short-circuit protection and ther-
mal shutdown are provided. High frequency operation
allows the reduction of input and output filtering compo-
nents and permits the use of chip inductors.
, LTC and LT are registered trademarks of Linear Technology Corporation.
*Patent Pending
APPLICATIO S
s
s
s
s
s
DSL Modems
Portable Computers
Wall Adapters
Battery-Powered Systems
Distributed Power
TYPICAL APPLICATIO
12V to 3.3V Step-Down Converter
D2
CMDSH-3
C2
0.1µF
V
IN
12V
BOOST
V
IN
OPEN
OR
HIGH
= ON
LT1767-3.3
SHDN
SYNC
FB
GND
V
C
C
C
1.5nF
R
C
4.7k
*MAXIMUM OUTPUT CURRENT IS SUBJECT TO THERMAL DERATING.
1767 TA01
L1
5µH
EFFICIENCY (%)
C3
2.2µF
CERAMIC
V
SW
OUTPUT
3.3V
1.2A*
D1
UPS120
C1
10µF
CERAMIC
U
Efficiency vs Load Current
95
V
IN
= 10V
V
OUT
= 5V
90
85
V
IN
= 5V
V
OUT
= 3.3V
80
75
70
0
0.2
0.4 0.6 0.8
1
LOAD CURRENT (A)
1.2
1.4
1767 TA01a
U
U
sn1767 1767fas
1
LM3S8962 cannot be recognized when debugging with external J-LINK
I applied for TI's LM3S8962 development kit, but there is only a large board, no small board. I want to use an external J-LINK to debug the LM3S8962 development board, but under the RVMDK settings, th...
jeremy414560967 Microcontroller MCU
I would like to ask you for an assembly statement, thank you! Waiting online
[i=s] This post was last edited by dontium on 2015-1-23 13:38 [/i] I use 2812 and have been writing programs in C language. Recently, I need to make a digital filtering program, so I need to write it ...
christina.feng Analogue and Mixed Signal
How to port open CV to winCE based on arm
I am new to Windows CE and I don't know anything. I would like to ask an expert. I have generated an arm-based Windows CE6 under VS2005, and now I want to install Open CV. Which version of Open CV sho...
你的初吻奶嘴 Embedded System
Are there any good looking buttons on wince?
Can the button be set to be flat?...
xuyangsuccess Embedded System
ADI designs RF transceivers for GSM and GPRS wireless handsets
Analog Devices, Inc. has introduced a chip that can reduce the RF circuit of a cellular phone to 1.5 square centimeters. This new Othello-G RF chip suitable for GSM/GPRS communication standards can pr...
JasonYoo RF/Wirelessly
Has anyone in the forum played with stm32 driving emmc?
As the title says, I am working on the emmc driver now. I saw that it is driven by sdio. This driver is very difficult to use. Can I ask for help? Or you can tell me the principle. I looked it up onli...
长得帅怪我落 stm32/stm8

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 7  2854  2164  1161  2272  1  58  44  24  46 
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