EEWORLDEEWORLDEEWORLD

Part Number

Search

LT1576CS8-SYNC#TRPBF

Description
IC REG BUCK ADJ 1.5A 8SOIC
CategoryPower/power management    The power supply circuit   
File Size292KB,28 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LT1576CS8-SYNC#TRPBF Overview

IC REG BUCK ADJ 1.5A 8SOIC

LT1576CS8-SYNC#TRPBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeSOIC
package instructionSOP, SOP8,.25
Contacts8
Manufacturer packaging codeS8
Reach Compliance Codecompliant
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Maximum input voltage25 V
Minimum input voltage5 V
Nominal input voltage15 V
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length4.9025 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature125 °C
Minimum operating temperature
Maximum output current3.5 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Maximum seat height1.752 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency240 kHz
technologyBIPOLAR
Temperature levelOTHER
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
width3.899 mm
Base Number Matches1
LT1576/LT1576-5
1.5A, 200kHz Step-Down
Switching Regulator
FEATURES
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Constant 200kHz Switching Frequency
1.21V Reference Voltage
Fixed 5V Output Option
Easily Synchronizable
Uses All Surface Mount Components
Inductor Size Reduced to 15
µ
H
Saturating Switch Design: 0.2Ω
Effective Supply Current: 1.16mA
Shutdown Current: 20µA
Cycle-by-Cycle Current Limiting
Fused Lead SO-8 Package
The LT
®
1576 is a 200kHz monolithic buck mode switching
regulator. A 1.5A switch is included on the die along with
all the necessary oscillator, control and logic circuitry. The
topology is current mode for fast transient response and
good loop stability. The LT1576 is a modified version of the
industry standard LT1376 optimized for noise sensitive
applications.
In addition, the reference voltage has been lowered to
allow the device to produce output voltages down to 1.2V.
Quiescent current has been reduced by a factor of two.
Switch on resistance has been reduced by 30%. Switch tran-
sition times have been slowed to reduce EMI generation.
The oscillator frequency has been reduced to 200kHz to
maintain high efficiency over a wide output current range.
The pinout has been changed to improve PC layout by
allowing the high current high frequency switching cir-
cuitry to be easily isolated from low current noise sensitive
control circuitry. The new SO-8 package includes a fused
ground lead which significantly reduces the thermal resis-
tance of the device to extend the ambient operating tem-
perature range. There is an optional function of shutdown
or synchronization. Standard surface mount external parts
can be used including the inductor and capacitors.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
Portable Computers
Battery-Powered Systems
Battery Charger
Distributed Power
TYPICAL APPLICATION
Efficiency vs Load Current
5V Buck Converter
INPUT
6V TO 25V
C3*
10µF TO
50µF
100
95
EFFICIENCY (%)
90
85
80
75
70
V
OUT
= 5V
V
IN
= 10V
L = 33µH
+
V
IN
BOOST
C2
0.33µF
V
SW
L1**
15µH
D2
1N914
OUTPUT**
5V, 1.25A
LT1576
OPEN = ON
SHDN
GND
V
C
BIAS
FB
D1
1N5818
C
C
100pF
R1
15.8k
R2
4.99k
* RIPPLE CURRENT RATING
I
OUT
/2
** INCREASE L1 TO 30µH FOR LOAD
CURRENTS ABOVE 0.6A AND TO
60µH ABOVE 1A
SEE APPLICATIONS INFORMATION
+
C1
100µF, 10V
SOLID
TANTALUM
1576 TA01
U
0
0.25
0.50 0.75 1.00
LOAD CURRENT (A)
1.25
1.50
1576 TA02
U
U
1
[Quiz with Prizes] Audio Design Class, do you dare to challenge these 10 questions?
[size=4]It’s September, the start of another school year, and a new batch of faces are entering the campus. I wonder if you will miss the good old days of studying electronic design? [/size][size=4] [...
EEWORLD社区 TI Technology Forum
Why doesn't the potentiometer have voltage?
[p=24, null, left][color=#333333][font=arial, 宋体, sans-serif,]As shown in the figure, R10 is a potentiometer. Now, by changing the resistance value of R10, the voltage input to the comparator changes....
ZNF PCB Design
[Repost] Reflections on the IBM China Research Institute Offer - Ability is an attitude
——I was deeply touched by this article written by a great person on the Internet After I finished my 30-minute technical report to several interviewers from IBM China Research Institute in Beijing on ...
张无忌1987 Talking about work
MP2520 Design
Does MP2520 need special treatment in the PCB design, such as separating it from the outside ground to form a separate copper-proof layer? [img]data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAl4AAAGVCA...
大何小鱼 PCB Design
Design of multi-channel signal generator based on FPGA+PWM
Use NIOS as a soft-core processor to output four-way signals: sawtooth wave, sine wave, square wave, triangle wave. I don't understand the principle. Can anyone give me some guidance?...
贤贤贤贤 FPGA/CPLD

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 476  2192  1623  2435  1502  10  45  33  50  31 
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