5秒后页面跳转
捷配首页

Datasheet > LT3976
LT3976 PDF预览

LT3976

更新时间： 2024-01-06 17:11:29
品牌 Logo 应用领域
凌特 - Linear 稳压器开关
页数 文件大小 规格书
28页 417K
描述
40V, 5A, 2MHz Step-Down Switching Regulator with 3.3μA Quiescent Current

阅读下载

中文翻译

获取价格

LT3976 数据手册

 浏览型号LT3976的Datasheet PDF文件第2页浏览型号LT3976的Datasheet PDF文件第3页浏览型号LT3976的Datasheet PDF文件第4页浏览型号LT3976的Datasheet PDF文件第5页浏览型号LT3976的Datasheet PDF文件第6页浏览型号LT3976的Datasheet PDF文件第7页 
LT3976  
40V, 5A, 2MHz Step-Down  
Switching Regulator with  
3.3µA Quiescent Current  
FeaTures  
DescripTion  
n
Ultralow Quiescent Current:  
3.3µA I at 12V to 3.3V  
OUT  
The LT®3976 is an adjustable frequency monolithic buck  
switchingregulatorthatacceptsawideinputvoltagerange  
up to 40V. Low quiescent current design consumes only  
3.3µAofsupplycurrentwhileregulatingwithnoload. Low  
ripple Burst Mode operation maintains high efficiency at  
low output currents while keeping the output ripple below  
15mV in a typical application. The LT3976 can supply up  
to 5A of load current and has current limit foldback to  
limitpowerdissipationduringshort-circuit. Alowdropout  
voltage of 500mV is maintained when the input voltage  
drops below the programmed output voltage, such as  
during automotive cold crank.  
Q
IN  
Low Ripple Burst Mode® Operation  
n
Output Ripple < 15mV  
P-P  
n
n
n
n
n
n
n
n
n
n
n
n
n
Wide Input Range: Operation from 4.3V to 40V  
5A Maximum Output Current  
Excellent Start-Up and Dropout Performance  
Adjustable Switching Frequency: 200kHz to 2MHz  
Synchronizable Between 250kHz to 2MHz  
Accurate Programmable Undervoltage Lockout  
Low Shutdown Current: I = 700nA  
Q
Power Good Flag  
Soft-Start Capability  
Thermal Shutdown Protection  
An internally compensated current mode topology is used  
for fast transient response and good loop stability. A high  
efficiency 75mΩ switch is included on the die along with a  
boost Schottky diode. An accurate 1.02V threshold enable  
pin can be driven directly from a microcontroller or used  
as a programmable undervoltage lockout. A capacitor on  
theSSpinprovidesacontrolledinrushcurrent(soft-start).  
Current Limit Foldback with Soft-Start Override  
Saturating Switch Design: 75mΩ On-Resistance  
Small, Thermally Enhanced 16-Lead MSOP and  
24-Lead 3mm × 5mm QFN Packages  
applicaTions  
A power good flag signals when V  
reaches 91.6% of  
OUT  
n
Automotive Battery Regulation  
the programmed output voltage. The LT3976 is available  
in small 16-lead MSOP and 24-lead 3mm × 5mm QFN  
packages with exposed pad for low thermal resistance.  
n
Portable Products  
n
Industrial Supplies  
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective owners.  
Typical applicaTion  
No-Load Supply Current  
3.3V Step-Down Converter  
8
IN REGULATION  
V
IN  
4.3V TO 40V  
V
OUT  
= 3.3V  
7
6
5
4
3
2
1
0
V
IN  
OFF ON  
EN  
PG  
BOOST  
SW  
3.3µH  
0.47µF  
10µF  
2Ω  
470pF  
PDS540  
LT3976  
SS  
RT  
OUT  
FB  
V
3.3V  
5A  
1M  
OUT  
10pF  
SYNC  
GND  
10nF  
47µF  
1210  
×2  
20 25  
130k  
576k  
0
5
10 15  
30 35 40  
INPUT VOLTAGE (V)  
3976 TA01a  
f = 400kHz  
3976 G05  
3976f  
1
For more information www.linear.com/3976  
1234567...28

中文翻译

下载PDF

与LT3976相关器件

型号 品牌 获取价格 描述 数据表
LT3980 Linear

获取价格

 		42V, 2.5A Synchronous Step-Down Regulator
LT3980 ADI

获取价格

 		具 85μA 静态电流的 58V、2A、2.4MHz 降压型开关稳压器
LT3980EDE#PBF Linear

获取价格

 		LT3980 - 58V, 2A, 2.4MHz Step-Down Switching Regulator with 85&#181;A Quiescent Curren
LT3980EDE#TRPBF Linear

获取价格

 		LT3980 - 58V, 2A, 2.4MHz Step-Down Switching Regulator with 85&#181;A Quiescent Curren
LT3980EMSE#PBF Linear

获取价格

 		LT3980 - 58V, 2A, 2.4MHz Step-Down Switching Regulator with 85&#181;A Quiescent Curren
LT3980EMSE#TRPBF Linear

获取价格

 		LT3980 - 58V, 2A, 2.4MHz Step-Down Switching Regulator with 85&#181;A Quiescent Curren
LT3980HMSE#PBF Linear

获取价格

 		LT3980 - 58V, 2A, 2.4MHz Step-Down Switching Regulator with 85&#181;A Quiescent Curren
LT3980IDE#PBF Linear

获取价格

 		LT3980 - 58V, 2A, 2.4MHz Step-Down Switching Regulator with 85&#181;A Quiescent Curren
LT3980IDE#TRPBF Linear

获取价格

 		LT3980 - 58V, 2A, 2.4MHz Step-Down Switching Regulator with 85&#181;A Quiescent Curren
LT3980IMSE#TRPBF Linear

获取价格

 		LT3980 - 58V, 2A, 2.4MHz Step-Down Switching Regulator with 85&#181;A Quiescent Curren

与LT3976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