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LTC1872ES6#TR PDF预览

LTC1872ES6#TR

更新时间: 2024-02-09 12:59:20
品牌 Logo 应用领域
凌特 - Linear 控制器
页数 文件大小 规格书
12页 183K
描述
LTC1872 - Constant Frequency Current Mode Step-Up DC/DC Controller in SOT-23; Package: SOT; Pins: 6; Temperature Range: -40°C to 85°C

LTC1872ES6#TR 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:SOT包装说明:LSSOP,
针数:6Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.12模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:CURRENT-MODE最大输入电压:9.8 V
最小输入电压:2.5 V标称输入电压:4.2 V
JESD-30 代码:R-PDSO-G6JESD-609代码:e3
长度:2.95 mm湿度敏感等级:1
功能数量:1端子数量:6
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:1 A封装主体材料:PLASTIC/EPOXY
封装代码:LSSOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, LOW PROFILE, SHRINK PITCH峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:1.45 mm
表面贴装:YES切换器配置:SINGLE
最大切换频率:650 kHz技术:CMOS
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.95 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:1.625 mmBase Number Matches:1

LTC1872ES6#TR 数据手册

 浏览型号LTC1872ES6#TR的Datasheet PDF文件第2页浏览型号LTC1872ES6#TR的Datasheet PDF文件第3页浏览型号LTC1872ES6#TR的Datasheet PDF文件第4页浏览型号LTC1872ES6#TR的Datasheet PDF文件第5页浏览型号LTC1872ES6#TR的Datasheet PDF文件第6页浏览型号LTC1872ES6#TR的Datasheet PDF文件第7页 
LTC1872  
Constant Frequency  
Current Mode Step-Up  
DC/DC Controller in SOT-23  
U
FEATURES  
DESCRIPTIO  
The LTC®1872 is a constant frequency current mode step-  
up DC/DC controller providing excellent AC and DC load  
and line regulation. The device incorporates an accurate  
undervoltagelockoutfeaturethatshutsdowntheLTC1872  
when the input voltage falls below 2.0V.  
High Efficiency: Over 90%  
High Output Currents Easily Achieved  
Wide VIN Range: 2.5V to 9.8V  
VOUT Limited Only by External Components  
Constant Frequency 550kHz Operation  
Burst ModeTM Operation at Light Load  
TheLTC1872boastsa±2.5%outputvoltageaccuracyand  
consumes only 270µA of quiescent current. For applica-  
tionswhereefficiencyisaprimeconsideration,theLTC1872  
is configured for Burst Mode operation, which enhances  
efficiency at low output current.  
Current Mode Operation for Excellent Line and Load  
Transient Response  
Low Quiescent Current: 270µA  
Shutdown Mode Draws Only 8µA Supply Current  
±2.5% Reference Accuracy  
Tiny 6-Lead SOT-23 Package  
In shutdown, the device draws a mere 8µA. The high  
550kHz constant operating frequency allows the use of a  
small external inductor.  
U
APPLICATIO S  
The LTC1872 is available in a small footprint 6-lead  
SOT-23.  
Lithium-Ion-Powered Applications  
Cellular Telephones  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
Wireless Modems  
Portable Computers  
Scanners  
U
TYPICAL APPLICATION  
V
IN  
Efficiency vs Load Current  
3.3V  
C1  
10µF  
10V  
R1  
100  
95  
90  
85  
80  
75  
70  
65  
0.03Ω  
V
V
= 3.3V  
= 5V  
IN  
OUT  
147k  
1
5
L1  
4.7µH  
I
/RUN  
V
TH  
IN  
LTC1872  
220pF  
80.6k  
V
5V  
1A  
OUT  
2
3
4
6
GND  
SENSE  
NGATE  
+
C2  
2× 22µF  
6.3V  
D1  
M1  
V
FB  
422k  
C1: TAIYO YUDEN CERAMIC EMK325BJ106MNT  
C2: MURATA GRM42-2X5R226K6.3  
D1: IR10BQ015  
L1: MURATA LQN6C4R7M04  
M1: IRLMS2002  
R1: DALE 0.25W  
1872 TA01  
1
10  
100  
1000  
LOAD CURRENT (mA)  
Figure 1. LTC1872 High Output Current 3.3V to 5V Boost Converter  
1872 TA01b  
1

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