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LT8711IUDC#PBF PDF预览

LT8711IUDC#PBF

更新时间: 2024-02-12 09:00:27
品牌 Logo 应用领域
凌特 - Linear 开关
页数 文件大小 规格书
38页 1309K
描述
LT8711 - Micropower Synchronous Multitopology Controller with 42V Input Capability; Package: QFN; Pins: 20; Temperature Range: -40°C to 85°C

LT8711IUDC#PBF 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Active包装说明:QFN-20
针数:20Reach Compliance Code:compliant
风险等级:5.72模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:CURRENT-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:42 V最小输入电压:4.5 V
标称输入电压:12 VJESD-30 代码:R-PQCC-N20
长度:4 mm功能数量:1
端子数量:20最高工作温度:125 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:HVQCCN封装形状:RECTANGULAR
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):NOT SPECIFIED
座面最大高度:0.8 mm表面贴装:YES
切换器配置:BUCK-BOOST最大切换频率:825 kHz
温度等级:AUTOMOTIVE端子形式:NO LEAD
端子节距:0.5 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3 mm
Base Number Matches:1

LT8711IUDC#PBF 数据手册

 浏览型号LT8711IUDC#PBF的Datasheet PDF文件第2页浏览型号LT8711IUDC#PBF的Datasheet PDF文件第3页浏览型号LT8711IUDC#PBF的Datasheet PDF文件第4页浏览型号LT8711IUDC#PBF的Datasheet PDF文件第5页浏览型号LT8711IUDC#PBF的Datasheet PDF文件第6页浏览型号LT8711IUDC#PBF的Datasheet PDF文件第7页 
LT8711  
Micropower Synchronous  
Multitopology Controller  
with 42V Input Capability  
DescripTion  
The LT®8711 is a multi-topology current mode PWM con-  
trollerthatcaneasilybeconfiguredasasynchronousbuck,  
boost, SEPIC, ZETA or as a nonsynchronous buck-boost  
converter. Its dual gate drive voltage inputs optimize gate  
driver efficiency.  
FeaTures  
n
Easily Configurable as a Synchronous Buck, Boost,  
SEPIC, ZETA or Nonsynchronous Buck-Boost Converter  
n
Wide Input Range: 4.5V to 42V (V Can Operate  
IN  
to 0V, when EXTV > 4.5V)  
CC  
Automatic Low Noise Burst Mode® Operation  
n
n
n
n
n
n
n
n
n
Low I in Burst Mode Operation (15μA Operating)  
Q
The1Ano-loadquiescentcurrentwiththeoutputvoltage  
inregulationextendsoperatingrun-timeinbatterypowered  
systems. Low ripple Burst Mode operation enables high  
efficiency at very light loads while maintaining low output  
voltageripple.TheLT8711'sfixedswitchingfrequencycan  
be set from 100kHz to 750kHz or can be synchronized to  
an external clock.  
Input Voltage Regulation for High Impedance Source  
100% Duty Cycle in Dropout (Buck Mode)  
2A Gate Drivers (BG and TG)  
Adjustable Soft-Start with One Capacitor  
Frequency Programmable from 100kHz to 750kHz  
Can Be Synchronized to External Clock  
Available in 20-Lead TSSOP and 20-Lead 3mm×4mm  
QFN Packages  
The additional features include 100% duty cycle capability  
wheninbuckmode,atopologyselectionpinandadjustable  
soft-start. LT8711 is available in the 20-lead TSSOP and  
20-lead 3mm × 4mm QFN packages.  
applicaTions  
L, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks  
of Analog Devices, Inc. All other trademarks are the property of their respective owners.  
n
General Purpose DC/DC Conversion  
n
Automotive Systems  
n
Industrial Supplies  
Solar Panel Power Converter  
n
Typical applicaTion  
400kHz 5V to 40V Input/12V Output Nonsynchronous Buck Boost  
V
IN  
Efficiency vs Load Current  
5V TO  
40V  
10µF ×6  
100  
90  
V
BIAS  
IN  
50V, X7R  
2.2µF  
EN/FBIN  
EXTV  
LT8711  
OPMODE  
INTV  
V
CC  
EE  
OUT  
80  
100pF  
TG  
M1  
L1  
4.7µH  
70  
V
OUT  
2.2µF  
60  
D1  
D2  
12V,  
INTV  
CC  
3.5A (V >16V)  
ISN  
IN  
50  
2.5A (9V < V < 16V)  
IN  
60.4k  
1.5A (V < 9V)  
IN  
40  
30  
20  
10  
0
4mΩ  
1M  
RT  
100µF ×2  
16V, X7R  
SYNC  
ISP  
GND  
V
V
V
V
= 5V  
330nF  
100pF  
2.2nF  
IN  
IN  
IN  
IN  
M2  
69.8k  
= 12V  
= 24V  
= 36V  
SS  
BG  
CSP  
CSN  
4mΩ  
0.001  
0.01  
0.1  
1
4
110k  
LOAD CURRENT (A)  
V
C
8711 TA01b  
FB  
8711 TA01a  
8711f  
1
For more information www.linear.com/LT8711  

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