EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC3538EDCB-TR

Description
800mA Synchronous Buck-Boost DC/DC Converter
File Size207KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Compare View All

LTC3538EDCB-TR Overview

800mA Synchronous Buck-Boost DC/DC Converter

LTC3538
800mA Synchronous
Buck-Boost
DC/DC Converter
FEATURES
DESCRIPTION
The LTC
®
3538 is a highly efficient, low noise, buck-boost
DC/DC converter that operates from input voltages above,
below, and equal to the output voltage. The topology
incorporated in the IC provides a continuous transfer
function through all operating modes, making the product
ideal for single Lithium Ion or multicell Alkaline or NiMH
applications where the output voltage is within the battery
voltage range.
The LTC3538 is suited for use in Micro Hard Disk Drive
(μHDD) applications with its 800mA current capability. Burst
Mode
®
operation provides high efficiency at light loads.
The LTC3538 includes two 0.17Ω N-channel and two
0.2Ω P-channel MOSFET switches. Operating frequency
is internally set to 1MHz to minimize solution footprint
while maximizing efficiency.
Other features include <5μA shutdown current, internal
soft-start, short circuit protection and thermal shutdown.
The LTC3538 is available in a low profile (0.75mm), ther-
mally enhanced 8-lead (2mm × 3mm) DFN package.
, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology
Corporation. All other trademarks are the property of their respective owners. Protected by
U.S. Patents including 5481178, 6304066, 6580258, 6166527, 6404251.
Regulated Output with Input Voltages Above,
Below, or Equal to the Output
800mA Continuous Output Current from a Single
Lithium-Ion/Polymer Cell
Single Inductor
1.8V to 5.25V V
OUT
Range
2.4V to 5.5V V
IN
Range
1MHz Fixed Frequency Operation
Output Disconnect in Shutdown
35μA Quiesecent Current in Burst Mode Operation
<5μA Shutdown Current
Internal Soft-Start
Small, Thermally Enhanced 8-Lead (2mm x 3mm)
DFN package
APPLICATIONS
Miniature Hard Disk Drives
MP3 Players
Digital Cameras
Cellular Handsets
PDAs, Handheld PC
GPS Receivers
TYPICAL APPLICATION
Li-Ion/Polymer to 3.3V at 800mA
L1
3.3μH
V
OUT
3.3V
800mA
Efficiency vs V
IN
100
V
OUT
= 3.3V
I
LOAD
= 200mA
LTC3538
SW1
V
IN
2.9V TO 4.2V
C
IN
10μF
PWM
BURST
BURST
GND
ON OFF
SD
V
IN
SW2
V
OUT
FB
V
C
330pF
33pF
C
OUT
22μF
15k
EFFICIENCY (%)
R1
464k
10k
95
90
85
*
R2
200k
3538 TA01
80
2.4
2.9
3.4
4.4
3.9
V
IN
(V)
4.9
5.4
3538 TA01b
*μP OPEN DRAIN I/O
3538fb
1

LTC3538EDCB-TR Related Products

LTC3538EDCB-TR LTC3538 LTC3538EDCB-TRPBF LTC3538EDCB-PBF
Description 800mA Synchronous Buck-Boost DC/DC Converter 800mA Synchronous Buck-Boost DC/DC Converter 800mA Synchronous Buck-Boost DC/DC Converter 800mA Synchronous Buck-Boost DC/DC Converter
Is circuit simulation necessarily the same as theoretical calculation?
If the parameters in the circuit simulation are the same as those in the theory, are the simulation results also exactly the same?...
PCB板 Analog electronics
Ask questions carefully, don't pass by, come in and take a look -
How to write the following program?Ask for advice[[i] This post was last edited by Yongxinsixiang on 2012-5-28 07:05[/i]]...
用心思考 51mcu
Key Points of Porting μCOS-II to ARM Processor
. Set up the processor and compiler related codes in OS_CPU.H /******************************************************************** * * Compiler related data types*************************************...
呱呱 ARM Technology
Inventory of diodes and eight major circuit protection components
Circuit protection components have a wide range of applications. As long as there is electricity, there is a need to install circuit protection components, such as various household appliances, home a...
鬼谷清泉 Analog electronics
[Qinheng RISC-V core CH582] 5-SPI drive OLED
[i=s]This post was last edited by manhuami2007 on 2022-3-13 20:20[/i]The SPI provided by CH582 supports mode 0 and mode 3, can be configured as 3-wire or 2-wire mode, supports master and slave modes, ...
manhuami2007 Domestic Chip Exchange
Happy Lantern Festival to everyone! What's the strangest filling of Yuanxiao you've ever eaten?
[font=微软雅黑][size=3][color=#ff0000][b]Today is the 15th day of the first lunar month, the Lantern Festival. I wish you all a happy holiday! [/b][/color][/size][/font][font=微软雅黑][size=3]Some people ask ...
eric_wang Talking

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 177  500  517  2100  2132  4  11  43  44  5 
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