5秒后页面跳转
捷配首页

Datasheet > LTC1438CG-ADJ#TRPBF
LTC1438CG-ADJ#TRPBF PDF预览

LTC1438CG-ADJ#TRPBF

更新时间： 2024-11-23 20:57:51
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
32页 442K
描述
LTC1438 - Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators; Package: SSOP; Pins: 28; Temperature Range: 0°C to 70°C

阅读下载

中文翻译

获取价格

LTC1438CG-ADJ#TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SSOP包装说明：SSOP, SSOP28,.3
针数：28Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.11模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：36 V最小输入电压：3.5 V
标称输入电压：15 VJESD-30 代码：R-PDSO-G28
JESD-609代码：e3长度：10.2 mm
湿度敏感等级：1功能数量：1
端子数量：28最高工作温度：70 °C
最低工作温度：最大输出电流：2 A
封装主体材料：PLASTIC/EPOXY封装代码：SSOP
封装等效代码：SSOP28,.3封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：2 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PUSH-PULL最大切换频率：400 kHz
技术：CMOS温度等级：COMMERCIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：5.3 mm
Base Number Matches：1

LTC1438CG-ADJ#TRPBF 数据手册

 浏览型号LTC1438CG-ADJ#TRPBF的Datasheet PDF文件第2页浏览型号LTC1438CG-ADJ#TRPBF的Datasheet PDF文件第3页浏览型号LTC1438CG-ADJ#TRPBF的Datasheet PDF文件第4页浏览型号LTC1438CG-ADJ#TRPBF的Datasheet PDF文件第5页浏览型号LTC1438CG-ADJ#TRPBF的Datasheet PDF文件第6页浏览型号LTC1438CG-ADJ#TRPBF的Datasheet PDF文件第7页 
LTC1438/LTC1439  
Dual High Efficiency,  
Low Noise, Synchronous  
Step-Down Switching Regulators  
U
DESCRIPTIO  
FEATURES  
The LTC®1438/LTC1439 are dual, synchronous step-  
down switching regulator controllers which drive external  
N-channel power MOSFETs in a phase-lockable fixed  
frequencyarchitecture.TheAdaptivePowerTM outputstage  
selectively drives two N-channel MOSFETs at frequencies  
up to 400kHz while reducing switching losses to maintain  
high efficiencies at low output currents.  
■
Maintains Constant Frequency at Low Output  
Currents  
■
Dual N-Channel MOSFET Synchronous Drive  
■
Programmable Fixed Frequency (PLL Lockable)  
Wide VIN Range: 3.5V to 36V Operation  
Ultrahigh Efficiency  
■
■
■
■
Very Low Dropout Operation: 99% Duty Cycle  
Low Dropout, 0.5A Linear Regulator for VPP  
Generation or Low Noise Audio Supply  
Built-In Power-On Reset Timer  
An auxiliary 0.5A linear regulator using an external PNP  
pass device provides a low noise, low dropout voltage  
source. A secondary winding feedback control pin (SFB1)  
guarantees regulation regardless of load on the main  
output by forcing continuous operation.  
■
■
■
■
■
■
■
■
■
Programmable Soft Start  
Low-Battery Detector  
Remote Output Voltage Sense  
An additional comparator is available for use as a low  
batterydetector. Apower-onresettimer(POR)isincluded  
which generates a signal delayed by 65536/fCLK (typ  
300ms) after the output is within 5% of the regulated  
output voltage. Internal resistive dividers provide pin  
selectableoutputvoltageswithremotesensecapabilityon  
one of the two outputs.  
Foldback Current Limiting (Optional)  
Pin Selectable Output Voltage  
Logic-Controlled Micropower Shutdown: IQ < 30µA  
Output Voltages from 1.19V to 9V  
Available in 28- and 36-Lead SSOP Packages  
U
APPLICATIO S  
The operating current levels are user-programmable via  
external current sense resistors. Wide input supply range  
allows operation from 3.5V to 30V (36V maximum).  
, LTC and LT are registered trademarks of Linear Technology Corporation. Adaptive  
Power is a trademark of Linear Technology Corporation. All other trademarks are the prop-  
erty of their respective owners. Protected by U.S. Patents including 5481178, 6304066,  
5929620, 6580258, 5705919, 5731731.  
■
Notebook and Palmtop Computers, PDAs  
■
Portable Instruments  
Battery-Operated Devices  
DC Power Distribution Systems  
■
■
U
TYPICAL APPLICATIO  
V
IN  
5.2V TO 28V  
C
IN  
+
+
D
, CMDSH-3  
D , CMDSH-3  
B2  
B1  
4.7µF  
16V  
22µF  
35V  
× 4  
V
V
INTV  
CC  
BOOST 1  
TGL1  
BOOST 2  
TGL2  
PROG1  
IN  
M1  
M4  
L2  
TGS1  
TGS2  
M6*  
M3*  
L1  
10µH  
C
C
, 0.1µF  
B1  
B2  
10µH  
0.1µF  
SW2  
BG2  
SW1  
BG1  
D2  
M5  
D1  
MBR140T3  
LTC1439  
M2  
MBR140T3  
+
SENSE  
SENSE  
2
2
+
1000pF  
SENSE  
1
R
–
SENSE2  
R
0.03Ω  
SENSE1  
0.03Ω  
1000pF  
V
OSENSE2  
–
V
SENSE  
1
V
3.3V  
3.5A  
OUT1  
5V  
3.5A  
OUT2  
I
I
C
C
TH1  
TH2  
C1  
C2  
+
1000pF  
C
1000pF  
OUT1  
RUN/SS1  
C
V
SGND PGND RUN/SS2  
OSC  
PROG2  
220µF  
+
C
OUT  
R
C
C
C
C
R
C
10V  
C1  
10k  
C1A  
SS1  
0.1µF  
OSC  
SS2  
0.1µF  
C2  
10k  
C2A  
470pF  
220µF  
220pF  
56pF  
*NOT REQUIRED FOR LTC1438  
10V  
1438 F01  
BOLD LINES INDICATE HIGH CURRENT PATHS  
M1, M2, M4, M5: Si4412ADY  
M3, M6: IRLML2803  
Figure 1. High Efficiency Dual 5V/3V Step-Down Converter  
14389fb  
1
1234567...32

中文翻译

下载PDF

LTC1438CG-ADJ#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC1438IG-ADJ#PBF ADI

功能相似

 Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators

与LTC1438CG-ADJ#TRPBF相关器件

型号 品牌 获取价格 描述 数据表
LTC1438IG Linear

获取价格

 		Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
LTC1438IG-ADJ Linear

获取价格

 		Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
LTC1438IG-ADJ#PBF ADI

获取价格

 		Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
LTC1438IG-ADJ#TR Linear

获取价格

 		LTC1438 - Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators; Pac
LTC1438XCG Linear

获取价格

 		Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
LTC1438XCG#PBF Linear

获取价格

 		LTC1438 - Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators; Pac
LTC1439 Linear

获取价格

 		Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
LTC1439_15 Linear

获取价格

 		Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
LTC1439CG Linear

获取价格

 		Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
LTC1439CG#PBF Linear

获取价格

 		LTC1439 - Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators; Pac

与LTC1438CG-ADJ#TRPBF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