5秒后页面跳转
捷配首页

Datasheet > LTC3890-3
LTC3890-3 PDF预览

LTC3890-3

更新时间： 2024-11-24 12:25:47
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
40页 1277K
描述
60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller

阅读下载

中文翻译

获取价格

LTC3890-3 数据手册

 浏览型号LTC3890-3的Datasheet PDF文件第2页浏览型号LTC3890-3的Datasheet PDF文件第3页浏览型号LTC3890-3的Datasheet PDF文件第4页浏览型号LTC3890-3的Datasheet PDF文件第5页浏览型号LTC3890-3的Datasheet PDF文件第6页浏览型号LTC3890-3的Datasheet PDF文件第7页 
LTC3890-3  
60V Low I , Dual, 2-Phase  
Q
Synchronous Step-Down  
DC/DC Controller  
DescripTion  
FeaTures  
The LTC®3890-3 is a high performance dual step-down  
switching regulator DC/DC controller that drives all  
N-channelsynchronouspowerMOSFETstages.Aconstant  
frequency current mode architecture allows a phase-  
lockablefrequencyofupto850kHz.Powerlossandsupply  
noiseareminimizedbyoperatingthetwocontrolleroutput  
stages out-of-phase.  
n
Wide V Range: 4V to 60V (65V Abs Max)  
IN  
n
Low Operating I : 50µA (One Channel On)  
Q
n
n
n
Wide Output Voltage Range: 0.8V ≤ V  
≤ 24V  
OUT  
R
or DCR Current Sensing  
SENSE  
Out-of-Phase Controllers Reduce Input Capacitance  
and Power Supply Induced Noise  
n
n
n
Phase-Lockable Frequency (75kHz to 850kHz)  
Programmable Fixed Frequency (50kHz to 900kHz)  
Selectable Continuous, Pulse-Skipping or Low Ripple  
Burst Mode® Operation at Light Loads  
The50μAno-loadquiescentcurrentextendsoperatinglife  
in battery-powered systems. OPTI-LOOP® compensation  
allows the transient response to be optimized over a wide  
range of output capacitance and ESR values. A wide 4V  
to 60V input supply range encompasses a wide range of  
intermediate bus voltages and battery chemistries.  
n
n
n
n
n
n
Very Low Dropout Operation: 99% Duty Cycle  
Adjustable Output Voltage Soft-Start or Tracking  
Power Good Output Voltage Monitor  
Low Shutdown I : <14µA  
Q
Independent TRACK/SS pins for each controller ramp the  
outputvoltagesduringstart-up.Currentmodecontrollimits  
the inductor current during short-circuit conditions. The  
PLLIN/MODE pin selects among Burst Mode operation,  
pulse-skipping mode, or continuous conduction mode at  
light loads.  
Internal LDO Powers Gate Drive from V or EXTV  
Narrow SSOP Package  
IN  
CC  
applicaTions  
n
Automotive Always-On Systems  
n
Battery Operated Digital Devices  
n
For versions with different and/or additional features, see  
theLTC3890familysummary, Table1, inthePinFunctions  
section of this data sheet.  
Distributed DC Power Systems  
L, LT, LTC, LTM, Linear Technology, Burst Mode, OPTI-LOOP, PolyPhase and the Linear logo  
are registered trademarks of Linear Technology Corporation. All other trademarks are the  
property of their respective owners. Protected by U.S. Patents including 5481178, 5705919,  
5929620, 6100678, 6144194, 6177787, 6304066, 6580258, 7230497.  
Typical applicaTion  
High Efficiency Dual 8.5V/3.3V Output Step-Down Converter  
Efficiency and Power Loss  
vs Output Current  
V
IN  
9V TO 60V  
10000  
1000  
100  
100  
90  
80  
70  
60  
50  
40  
30  
20  
22µF  
V
V
= 12V  
IN  
OUT  
4.7µF  
= 3.3V  
V
INTV  
CC  
IN  
TG1  
TG2  
0.1µF  
0.1µF  
BOOST1  
SW1  
BOOST2  
SW2  
4.7µH  
8µH  
BG1  
BG2  
LTC3890-3  
10  
PGND  
+
+
SENSE1  
SENSE2  
1
0.01Ω  
100k  
0.008Ω  
10  
0
–
–
V
8.5V  
3A  
SENSE2  
OUT2  
SENSE1  
V
OUT1  
3.3V  
5A  
0.1  
10  
V
V
FB1  
FB2  
0.0001 0.001  
0.01  
0.1  
1
100k  
470µF  
ITH1  
ITH2  
OUTPUT CURRENT (A)  
1000pF  
34.8k  
1000pF  
330µF  
TRACK/SS1 SGND TRACK/SS2  
0.1µF  
38903 TA01b  
10.5k  
31.6k  
34.8k  
0.1µF  
38903 TA01a  
38903f  
1
For more information www.linear.com/3890-3  
1234567...40

中文翻译

下载PDF

与LTC3890-3相关器件

型号 品牌 获取价格 描述 数据表
LTC3890EGN-1 Linear

获取价格

 		60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
LTC3890EGN-1#PBF Linear

获取价格

 		暂无描述
LTC3890EGN-1PBF Linear

获取价格

 		60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
LTC3890EGN-1TRPBF Linear

获取价格

 		60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
LTC3890EGN-3#PBF Linear

获取价格

 		LTC3890-3 - 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller; Package: SSO
LTC3890EUH Linear

获取价格

 		60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
LTC3890EUH#PBF Linear

获取价格

 		LTC3890 - 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller; Package: QFN;
LTC3890EUH#TRPBF Linear

获取价格

 		LTC3890 - 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller; Package: QFN;
LTC3890EUH-2#PBF Linear

获取价格

 		LTC3890-2 - 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller; Package: QFN
LTC3890EUHPBF Linear

获取价格

 		60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller

与LTC3890-3相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证