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LP2951-33P PDF预览

LP2951-33P

更新时间： 2024-11-23 11:48:43
品牌 Logo 应用领域
德州仪器 - TI 线性稳压器IC调节器电源电路光电二极管输出元件
页数 文件大小 规格书
28页 3049K
描述
ADJUSTABLE MICROPOWER VOLTAGE REGULATORS WITH SHUTDOWN

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LP2951-33P 技术参数

生命周期：Obsolete零件包装代码：DIP
包装说明：DIP,针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.62
Is Samacsys：N最大回动电压 1：0.6 V
最大输入电压：30 V最小输入电压：3.966 V
JESD-30 代码：R-PDIP-T8长度：9.59 mm
功能数量：1端子数量：8
工作温度TJ-Max：125 °C工作温度TJ-Min：-40 °C
最大输出电流 1：0.1 A最大输出电压 1：3.366 V
最小输出电压 1：3.234 V标称输出电压 1：3.3 V
封装主体材料：PLASTIC/EPOXY封装代码：DIP
封装形状：RECTANGULAR封装形式：IN-LINE
认证状态：Not Qualified调节器类型：FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
座面最大高度：5.08 mm表面贴装：NO
技术：BIPOLAR端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
宽度：7.62 mmBase Number Matches：1

LP2951-33P 数据手册

 浏览型号LP2951-33P的Datasheet PDF文件第2页浏览型号LP2951-33P的Datasheet PDF文件第3页浏览型号LP2951-33P的Datasheet PDF文件第4页浏览型号LP2951-33P的Datasheet PDF文件第5页浏览型号LP2951-33P的Datasheet PDF文件第6页浏览型号LP2951-33P的Datasheet PDF文件第7页 
LP2950  
LP2951  
www.ti.com  
SLVS582F –APRIL 2006–REVISED DECEMBER 2009  
ADJUSTABLE MICROPOWER VOLTAGE REGULATORS  
WITH SHUTDOWN  
Check for Samples: LP2950, LP2951  
1
FEATURES  
•
•
•
•
•
•
•
Wide Input Range: Up to 30 V  
Rated Output Current of 100 mA  
Low Dropout: 380 mV (Typ) at 100 mA  
Low Quiescent Current: 75 μA (Typ)  
Tight Line Regulation: 0.03% (Typ)  
Tight Load Regulation: 0.04% (Typ)  
High VO Accuracy  
•
•
•
Stable With Low ESR (>12 mΩ) Capacitors  
Current- and Thermal-Limiting Features  
LP2950 Only (3-Pin Package)  
–
Fixed-Output Voltages of 5 V, 3.3 V, and 3 V  
•
LP2951 Only (8-Pin Package)  
–
Fixed- or Adjustable-Output Voltages:  
5 V/ADJ, 3.3 V/ADJ, and 3 V/ADJ  
–
–
–
Low-Voltage Error Signal on Falling Output  
Shutdown Capability  
–
–
1.4% at 25°C  
2% Over Temperature  
Remote Sense Capability for Optimal  
Output Regulation and Accuracy  
•
Can Be Used as a Regulator or Reference  
LP2950  
LP PACKAGE  
(BOTTOM VIEW)  
LP2951  
D OR P PACKAGE  
(TOP VIEW)  
LP2951  
DRG PACKAGE  
(TOP VIEW)  
OUTPUT  
1
2
3
4
8
7
6
5
OUTPUT  
SENSE  
INPUT  
INPUT  
1
2
3
4
8
7
6
5
OUTPUT  
SENSE  
FEEDBACK  
VTAP  
Thermal  
Pad  
FEEDBACK  
VTAP  
GND  
SHUTDOWN  
GND  
SHUTDOWN  
GND  
ERROR  
INPUT  
ERROR  
DESCRIPTION/ORDERING INFORMATION  
The LP2950 and LP2951 devices are bipolar, low-dropout voltage regulators that can accommodate a wide input  
supply-voltage range of up to 30 V. The easy-to-use, 3-pin LP2950 is available in fixed-output voltages of 5 V,  
3.3 V, and 3 V. However, the 8-pin LP2951 is able to output either a fixed or adjustable output from the same  
device. By tying the OUTPUT and SENSE pins together, and the FEEDBACK and VTAP pins together, the  
LP2951 outputs a fixed 5 V, 3.3 V, or 3 V (depending on the version). Alternatively, by leaving the SENSE and  
VTAP pins open and connecting FEEDBACK to an external resistor divider, the output can be set to any value  
between 1.235 V to 30 V.  
The 8-pin LP2951 also offers additional functionality that makes it particularly suitable for battery-powered  
applications. For example, a logic-compatible shutdown feature allows the regulator to be put in standby mode  
for power savings. In addition, there is a built-in supervisor reset function in which the ERROR output goes low  
when VOUT drops by 6% of its nominal value for whatever reasons – due to a drop in VIN, current limiting, or  
thermal shutdown.  
The LP2950 and LP2951 are designed to minimize all error contributions to the output voltage. With a tight  
output tolerance (0.5% at 25°C), a very low output voltage temperature coefficient (20 ppm typical), extremely  
good line and load regulation (0.3% and 0.4% typical), and remote sensing capability, the parts can be used as  
either low-power voltage references or 100-mA regulators.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2006–2009, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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