5秒后页面跳转
捷配首页

Datasheet > 暂无类别数据> LTC3446IDE#PBF
LTC3446IDE#PBF PDF预览

LTC3446IDE#PBF

更新时间： 2024-01-23 23:15:12
品牌 Logo 应用领域
凌特 - Linear 稳压器
页数 文件大小 规格书
20页 251K
描述
暂无描述

阅读下载

中文翻译

获取价格

LTC3446IDE#PBF 数据手册

 浏览型号LTC3446IDE#PBF的Datasheet PDF文件第2页浏览型号LTC3446IDE#PBF的Datasheet PDF文件第3页浏览型号LTC3446IDE#PBF的Datasheet PDF文件第4页浏览型号LTC3446IDE#PBF的Datasheet PDF文件第5页浏览型号LTC3446IDE#PBF的Datasheet PDF文件第6页浏览型号LTC3446IDE#PBF的Datasheet PDF文件第7页 
LTC3446  
Monolithic Buck Regulator  
with Dual VLDO Regulators  
FEATURES  
DESCRIPTION  
The LTC®3446 combines a synchronous buck DC/DC con-  
verter with two very low dropout (VLDO) linear regulators  
to provide up to three stepped-down output voltages from  
a single input voltage. The input voltage range is ideally  
suited for Li-Ion battery-powered applications, as well  
as powering low voltage logic from 5V or 3.3V rails. The  
output voltage range extends down to 0.4V for the VLDO  
regulators and 0.8V for the buck.  
n
High Efficiency Triple Step-Down Outputs from a  
Single Input Supply  
1A Synchronous Buck Regulator Provides Main  
n
Step-Down Output and Powers Two 300mA  
VLDO™ Linear Regulators  
n
Output Voltages as Low as 400mV (VLDO Outputs)  
n
Power Good Output  
Input Voltage Range: 2.7V to 5.5V  
n
n
Independent Internal Soft-Start for Each Supply  
The 1A synchronous buck converter provides the main  
output with high efficiency, typically 85%. The two 300mA  
VLDO regulators can run off the main output to provide  
two additional lower voltage outputs. A built-in supply  
monitor provides a power good indication.  
n
Independent Enable Pin for Each Supply  
n
Low (140μA Typ) No-Load Quiescent Current with  
all Outputs Enabled  
n
Constant Frequency Current Mode Operation  
n
2.25MHz Switching Frequency Uses Small  
Inductors  
The buck converter switches at 2.25MHz, allowing the use  
ofsmallsurfacemountinductorsandcapacitors.Constant  
frequency current mode operation produces controlled  
output spectrum and fast transient response. A mode-  
select pin allows automatic Burst Mode operation to be  
enabled for higher efficiency at light load, or disabled for  
lower noise operation down to very light loads. The two  
VLDOregulatorsarestablewithceramicoutputcapacitors  
as small as 1μF.  
Defeatable Automatic Burst Mode® Operation for  
n
High Efficiency at Light Loads  
n
1.5% Reference Accuracy  
n
Overtemperature Protection  
n
Thermally Enhanced 4mm × 3mm 14-Pin DFN  
Package  
APPLICATIONS  
L, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology Corporation.  
VLDO is a trademark of Linear Technology Corporation. All other trademarks are the property  
of their respective owners. Protected by U.S. Patents including 5481178, 6611131, 6304066,  
6498466, 6580258.  
n
Low Power Handheld Devices  
n
Low Voltage and Multivoltage Power for Digital  
Logic, I/O, FPGAs, CPLDs, ASICs and CPUs  
TYPICAL APPLICATION  
L1  
1.8μH  
V
OUT  
Buck Efficiency vs Buck Load Current  
V
IN  
2.9V TO 5.5V  
V
SW  
1.8V  
IN  
22μF  
X7R  
22μF  
X7R  
400mA MAX  
100  
59k  
PWM  
MODE  
Burst Mode  
OPERATION  
BUCKFB  
90  
80  
70  
60  
50  
40  
47.5k  
LTC3446  
LV  
IN  
V
1.5V  
300mA MAX  
OUT  
PGOOD LV  
MODESEL  
ENBUCK  
ENLDO1  
ENLDO2  
OUT1  
2.2μF  
X7R  
DIGITAL  
110k  
CONTROL  
1000pF  
LV  
FB1  
40.2k  
V
V
V
= 2.7V  
= 3.6V  
= 4.2V  
IN  
IN  
IN  
3.3k  
V
OUT  
1.2V  
300mA MAX  
I
TH  
LV  
OUT2  
2.2μF  
X7R  
80.6k  
40.2k  
1
10  
100  
1000  
LV  
FB2  
LOAD CURRENT (mA)  
GND  
3446 TA01b  
L1: TOKO A960AW-1R8M  
3446 TA01  
3446fd  
1
1234567...20

中文翻译

下载PDF

LTC3446IDE#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC3446IDE#TRPBF Linear

完全替代

 LTC3446 - Monolithic Buck Regulator with Dual VLDO Regulators; Package: DFN; Pins: 14; Tem
LTC3446EDE#PBF Linear

完全替代

 暂无描述
LTC3446EDE Linear

功能相似

 Monolithic Buck Regulator with Dual VLDO Regulators

与LTC3446IDE#PBF相关器件

型号 品牌 获取价格 描述 数据表
LTC3446IDE#TRPBF Linear

获取价格

 		LTC3446 - Monolithic Buck Regulator with Dual VLDO Regulators; Package: DFN; Pins: 14; Tem
LTC3446IDE-PBF Linear

获取价格

 		Monolithic Buck Regulator with Dual VLDO Regulators
LTC3446IDE-TRPBF Linear

获取价格

 		Monolithic Buck Regulator with Dual VLDO Regulators
LTC3447 Linear

获取价格

 		I2C Controllable Buck Regulator in 3mm × 3mm
LTC3447 ADI

获取价格

 		采用3mm x 3mm DFN 的 I2C 控制型降压稳压器
LTC3447EDD Linear

获取价格

 		LTC3447 - I<sup>2</sup>C Controllable Buck Regulator in 3mm x 3mm DFN; Package
LTC3447EDD#PBF Linear

获取价格

 		LTC3447 - I<sup>2</sup>C Controllable Buck Regulator in 3mm x 3mm DFN; Package
LTC3447EDD#TR Linear

获取价格

 		LTC3447 - I<sup>2</sup>C Controllable Buck Regulator in 3mm x 3mm DFN; Package
LTC3447EDD#TRPBF Linear

获取价格

 		暂无描述
LTC3448 Linear

获取价格

 		1.5MHz/2.25MHz, 600mA Synchronous Step-Down Regulator with LDO Mode

与LTC3446IDE#PBF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