5秒后页面跳转
捷配首页

Datasheet > LTC3890-2
LTC3890-2 PDF预览

LTC3890-2

更新时间： 2024-01-24 13:28:15
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
44页 598K
描述
Triple Output, Buck/Buck/Boost Synchronous Controller with 28μA Burst Mode IQ

阅读下载

中文翻译

获取价格

LTC3890-2 数据手册

 浏览型号LTC3890-2的Datasheet PDF文件第2页浏览型号LTC3890-2的Datasheet PDF文件第3页浏览型号LTC3890-2的Datasheet PDF文件第4页浏览型号LTC3890-2的Datasheet PDF文件第5页浏览型号LTC3890-2的Datasheet PDF文件第6页浏览型号LTC3890-2的Datasheet PDF文件第7页 
LTC3859AL  
Triple Output,  
Buck/Buck/Boost Synchronous  
Controller with 28µA Burst Mode I  
Q
FeaTures  
DescripTion  
n
Low Operating I : 28μA (One Channel On)  
TheLTC®3859ALisahighperformancetripleoutput(buck/  
buck/boost) synchronous DC/DC switching regulator  
controllerthatdrivesallN-channelpowerMOSFETstages.  
Constant frequency current mode architecture allows  
a phase-lockable switching frequency of up to 850kHz.  
The LTC3859AL operates from a wide 4.5V to 38V input  
supply range. When biased from the output of the boost  
converter or another auxiliary supply, the LTC3859AL can  
operate from an input supply as low as 2.5V after start-up.  
Q
n
Dual Buck Plus Single Boost Synchronous Controllers  
n
Outputs Remain in Regulation Through Cold Crank  
Down to 2.5V  
n
Wide Bias Input Voltage Range: 4.5V to 38V  
n
Buck Output Voltage Range: 0.8V ≤ V  
Boost Output Voltage Up to 60V  
≤ 24V  
OUT  
n
n
n
R
or DCR Current Sensing  
SENSE  
100% Duty Cycle for Boost Synchronous MOSFET  
Even in Burst Mode® Operation  
The 28μA no-load quiescent current extends operating  
runtime in battery powered systems. OPTI-LOOP com-  
pensation allows the transient response to be optimized  
over a wide range of output capacitance and ESR values.  
The LTC3859AL features a precision 0.8V reference for  
the bucks, 1.2V reference for the boost and a power good  
output indicator. The PLLIN/MODE pin selects among  
Burst Mode operation, pulse-skipping mode, or continu-  
ous inductor current mode at light loads.  
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  
Very Low Buck Dropout Operation: 99% Duty Cycle  
Adjustable Output Voltage Soft-Start or Tracking  
n
n
n
n
Low Shutdown I : 10μA  
Q
Small 38-Lead 5mm × 7mm QFN and TSSOP Packages  
Compared to the LTC3859 and the LTC3859A, the  
LTC3859AL is fully pin-compatible, but with lower Burst  
applicaTions  
n
Mode operation I (28µA with one channel on).  
Automotive Always-On and Start-Stop Systems  
Q
n
L, LT, LTC, LTM, Burst Mode, OPTI-LOOP and µModule are registered trademarks and  
Battery Operated Digital Devices  
No R  
is a trademark of Linear Technology Corporation. All other trademarks are the  
SENSE  
n
Distributed DC Power Systems  
Multioutput Buck-Boost Applications  
property of their respective owners. Protected by U.S. Patents including 5481178, 5705919,  
5929620, 6144194, 6177787, 6580258.  
n
Typical applicaTion  
V
OUT3  
REGULATED AT 10V WHEN V < 10V  
IN  
220µF  
1µF  
Efficiency and Power Loss vs  
Output Current  
FOLLOWS V WHEN V > 10V  
IN  
IN  
499k  
V
BIAS  
V
FB3  
TG1  
68.1k  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
10000  
V
= 12V  
IN  
4.9µH  
V
5V  
5A  
6mΩ  
OUT1  
SW1  
BG1  
TG3  
1.2µH  
2mΩ  
V
IN  
V
= BURST  
OUT1  
EFFICIENCY  
1000  
100  
10  
2.5V TO 38V  
SW3  
LTC3859AL  
(START-UP ABOVE 5V)  
220µF  
BG3  
+
SENSE1  
SENSE1  
–
–
+
SENSE3  
SENSE3  
INTV  
V
FB1  
357k  
CC  
68.1k  
220µF  
RUN1, 2, 3  
EXTV  
CC  
V
= BURST LOSS  
OUT1  
4.7µF  
1
BOOST1, 2, 3  
V
OUT1  
0.1µF  
SW1, 2, 3  
TG2  
SW2  
BG2  
V
8.5V  
3A  
6.5µH  
OUT2  
8mΩ  
0.1  
0.0001 0.001  
0.01  
0.1  
1
10  
I
TH1, 2, 3  
OUTPUT CURRENT (A)  
3859al TA01b  
SENSE2+  
SENSE2–  
TRACK/SS1, 2  
SS3  
0.1µF  
V
FB2  
649k  
PGND SGND  
68.1k  
68µF  
3859al TA01a  
3859alf  
1
For more information www.linear.com/3859AL  
1234567...44

中文翻译

下载PDF

与LTC3890-2相关器件

型号 品牌 获取价格 描述 数据表
LTC3890-3 Linear

获取价格

 		60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
LTC3890-3 ADI

获取价格

 		60V、低 IQ、双通道、两相、同步降压型 DC/DC 控制器
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;

与LTC3890-2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