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UCC2941DTR-3G4 PDF预览

UCC2941DTR-3G4

更新时间： 2024-09-19 14:45:23
品牌 Logo 应用领域
德州仪器 - TI 信息通信管理
页数 文件大小 规格书
11页 190K
描述
IC,SMPS CONTROLLER,CURRENT-MODE,BICMOS,SOP,8PIN,PLASTIC

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中文翻译

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UCC2941DTR-3G4 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：SOP, SOP8,.25Reach Compliance Code：compliant
风险等级：5.84控制模式：CURRENT-MODE
JESD-30 代码：R-PDSO-G8端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：0.15 A封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
认证状态：Not Qualified子类别：Switching Regulator or Controllers
表面贴装：YES技术：BICMOS
温度等级：INDUSTRIAL端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
Base Number Matches：1

UCC2941DTR-3G4 数据手册

 浏览型号UCC2941DTR-3G4的Datasheet PDF文件第2页浏览型号UCC2941DTR-3G4的Datasheet PDF文件第3页浏览型号UCC2941DTR-3G4的Datasheet PDF文件第4页浏览型号UCC2941DTR-3G4的Datasheet PDF文件第5页浏览型号UCC2941DTR-3G4的Datasheet PDF文件第6页浏览型号UCC2941DTR-3G4的Datasheet PDF文件第7页 
application  
INFO  
UCC2941-3/-5/-ADJ  
UCC3941-3/-5/-ADJ  
available  
1V Synchronous Boost Converter  
FEATURES  
DESCRIPTION  
• 1V Input Voltage Operation Startup  
Guaranteed Under Full Load on Main  
Output With Operation Down to 0.4V  
The UCC3941 family of low input voltage single inductor boost converters  
are optimized to operate from a single or dual alkaline cell, and step up to  
a 3.3V, 5V, or an adjustable output at 500mW. The UCC3941 family also  
provides an auxiliary 9V 100mW output, primarily for the gate drive supply,  
which can be used for applications requiring an auxiliary output such as a  
5V supply by linear regulating. The primary output will start up under full  
load at input voltages typically as low as 0.8V, with a guaranteed maximum  
of 1V, and will operate down to 0.4V once the converter is operating, maxi-  
mizing battery utilization.  
• Input Voltage Range of 1V to VOUT  
+
0.5V  
• 500mW Output Power at Battery  
Voltages as Low as 0.8V  
• Secondary 9V Supply From a Single  
Inductor  
Demanding applications such as Pagers and PDA’s require high efficiency  
from several milli-watts to several hundred milli-watts, and the UCC3941  
family accommodates these applications with >80% typical efficiencies  
over the wide range of operation. The high efficiency at low output current  
is achieved by optimizing switching and conduction losses along with low  
quiescent current. At higher output current the 0.25Ω switch, and 0.4Ω syn-  
chronous rectifier, along with continuous mode conduction, provide high ef-  
ficiency. The wide input voltage range on the UCC3941 family can  
accommodate other power sources such as NiCd and NiMH.  
• Adjustable Output Power Limit Control  
• Output Fully Disconnected in  
Shutdown  
• Adaptive Current Mode Control for  
Optimum Efficiency  
• 8µA Shutdown Supply Current  
Other features include maximum power control and shutdown control.  
Packages available are the 8-pin SOIC (D) and 8-pin DIP (N or J).  
SIMPLIFIED BLOCK DIAGRAM AND APPLICATION CIRCUIT  
+
10µF  
0.8V TO VOUT +0.5V  
22µH  
VIN  
3
SW  
UCC3941-3 = 3.3V  
UCC3941-5 = 5.0V  
UCC3941-ADJ = 1.30V TO 6V  
VOUT  
8
8V  
VGD  
0.4Ω  
STARTUP  
2
1
CIRCUITRY  
10µF  
0.25Ω  
100µF  
MODULATOR CONTROL CIRCUIT  
SYNCHRONOUS RECTIFICATION CIRCUITRY  
ANTI-CROSS CONDUCTION  
STARTUP  
MULTIPLEXING LOGIC  
MAXIMUM INPUT POWER CONTROL  
ADAPTIVE CURRENT CONTROL  
PLIM  
5
SD  
4
*SGND/FB  
6
OPEN=SD  
UCC3941-ADJ  
1.25V  
–
+
PGND  
7
*FOR UCC3941-ADJ ONLY:  
PIN 7 = SGND & PGND, PIN 6 = OUTPUT SENSE FEEDBACK, FB.  
UDG-98147  
SLUS242 - JULY 1999  
1234567...11

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