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LTC3801BES6 PDF预览

LTC3801BES6

更新时间: 2024-11-08 22:37:19
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
12页 241K
描述
Micropower Constant Frequency Step-Down DC/DC Controllers in ThinSOT

LTC3801BES6 技术参数

是否Rohs认证:不符合生命周期:Transferred
零件包装代码:SOT包装说明:VSSOP, TSOP6,.11,37
针数:6Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.16Is Samacsys:N
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:2.4 V
标称输入电压:4.2 VJESD-30 代码:R-PDSO-G6
JESD-609代码:e0长度:2.9 mm
湿度敏感等级:1功能数量:1
端子数量:6最高工作温度:70 °C
最低工作温度:最大输出电流:1 A
封装主体材料:PLASTIC/EPOXY封装代码:VSSOP
封装等效代码:TSOP6,.11,37封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):235
认证状态:Not Qualified座面最大高度:1 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:BUCK最大切换频率:650 kHz
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)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:20宽度:1.625 mm
Base Number Matches:1

LTC3801BES6 数据手册

 浏览型号LTC3801BES6的Datasheet PDF文件第2页浏览型号LTC3801BES6的Datasheet PDF文件第3页浏览型号LTC3801BES6的Datasheet PDF文件第4页浏览型号LTC3801BES6的Datasheet PDF文件第5页浏览型号LTC3801BES6的Datasheet PDF文件第6页浏览型号LTC3801BES6的Datasheet PDF文件第7页 
LTC3801/LTC3801B  
Micropower  
Constant Frequency Step-Down  
DC/DC Controllers in ThinSOT  
U
FEATURES  
DESCRIPTIO  
The LTC®3801/LTC3801B are constant frequency cur-  
rent mode step-down DC/DC controllers in a low profile  
High Efficiency: Up to 94%  
Very Low No-Load Quiescent Current:  
(1mm max) 6-lead SOT-23 (ThinSOTTM  
) package. The  
Only 16µA (LTC3801)  
High Output Currents Easily Achieved  
parts provide excellent AC and DC load and line regula-  
tion with ±1.5% output voltage accuracy. The LTC3801  
consumes only 195µA of quiescent current in normal  
operation, dropping to 16µA under no-load conditions.  
Internal Soft-Start  
Wide VIN Range: 2.4V to 9.8V  
Low Dropout: 100% Duty Cycle  
Constant Frequency 550kHz Operation  
TheLTC3801/LTC3801Bincorporateanundervoltagelock-  
out feature that shuts down the device when the input  
voltage falls below 2.2V. The LTC3801 automatically  
switches into Burst Mode operation at light loads which  
enhancesefficiencyatlowoutputcurrent.IntheLTC3801B,  
BurstModeoperationisdisabledforloweroutputrippleat  
light loads.  
Burst Mode® Operation for High Efficiency  
at Light Loads (LTC3801)  
Burst Mode Operation Disabled for Lower Output  
Ripple at Light Loads (LTC3801B)  
Output Voltage as Low as 0.8V  
±1.5% Voltage Reference Accuracy  
Current Mode Operation for Excellent Line and Load  
To further maximize the life of a battery source, the  
external P-channel MOSFET is turned on continuously in  
dropout (100% duty cycle). High switching frequency of  
550kHz allows the use of a small inductor.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a registered trademark of Linear Technology Corporation.  
ThinSOT is a trademark of Linear Technology Corporation.  
Transient Response  
Only 6µA Supply Current in Shutdown (LTC3801)  
Low Profile (1mm) SOT-23 Package  
U
APPLICATIO S  
1- or 2-Cell Li-Ion Battery-Powered Applications  
Wireless Devices  
Portable Computers  
Distributed Power Systems  
U
LTC3801 Efficiency vs Load Current*  
TYPICAL APPLICATIO  
100  
V
= 2.5V  
OUT  
V
= 3.3V  
95  
90  
85  
IN  
V
= 4.2V  
IN  
550kHz Micropower Step-Down DC/DC Controller  
220pF  
V
= 6.6V  
IN  
V
IN  
10k  
80  
75  
2.7V TO 9.8V  
I
/RUN  
LTC3801/  
V
TH  
IN  
10µF  
0.025Ω  
V
= 8.4V  
V
= 9.8V  
IN  
LTC3801B  
IN  
70  
65  
60  
55  
50  
GND  
SENSE  
V
PGATE  
FB  
402k  
4.7µH  
V
OUT  
866k  
2.5V  
2A  
+
0.1  
1
10  
100  
1000 10000  
47µF  
LOAD CURRENT (mA)  
3801 TA02  
3801 TA01  
*SEE NO-LOAD IQ vs INPUT VOLTAGE ON THE LAST PAGE OF THIS DATA SHEET  
3801f  
1

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