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LP2951ACM-3.3/NOPB

更新时间： 2024-11-10 12:09:51
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德州仪器 - TI 调节器
页数 文件大小 规格书
43页 1949K
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LP2950-N/LP2951-N Series of Adjustable Micropower Voltage Regulators

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LP2951ACM-3.3/NOPB 数据手册

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LP2950-N, LP2951-N  
www.ti.com  
SNVS764N –JANUARY 2000–REVISED MAY 2013  
LP2950-N/LP2951-N Series of Adjustable Micropower Voltage Regulators  
Check for Samples: LP2950-N, LP2951-N  
1
FEATURES  
DESCRIPTION  
The LP2950-N and LP2951-N are micropower  
2
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•
•
•
•
•
•
•
•
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•
5V, 3V, and 3.3V Versions Available  
High Accuracy Output Voltage  
Ensured 100 mA Output Current  
Extremely Low Quiescent Current  
Low Dropout Voltage  
voltage regulators with very low quiescent current (75  
μA typ.) and very low dropout voltage (typ. 40 mV at  
light loads and 380 mV at 100 mA). They are ideally  
suited for use in battery-powered systems.  
Furthermore, the quiescent current of the LP2950-  
N/LP2951-N increases only slightly in dropout,  
prolonging battery life.  
Extremely Tight Load and Line Regulation  
Very Low Temperature Coefficient  
Use as Regulator or Reference  
Needs Minimum Capacitance for Stability  
Current and Thermal Limiting  
The LP2950-N-5.0 is available in the surface-mount  
PFM package, and in the popular 3-pin TO-92  
package for pin-compatibility with older 5V regulators.  
The 8-lead LP2951-N is available in plastic, ceramic  
dual-in-line, WSON, or metal can packages and  
offers additional system functions.  
Stable With Low-ESR Output Capacitors (10  
mΩ to 6Ω)  
One such feature is an error flag output which warns  
of a low output voltage, often due to falling batteries  
on the input. It may be used for a power-on reset. A  
second feature is the logic-compatible shutdown input  
which enables the regulator to be switched on and  
off. Also, the part may be pin-strapped for a 5V, 3V,  
or 3.3V output (depending on the version), or  
programmed from 1.24V to 29V with an external pair  
of resistors.  
LP2951-N VERSIONS ONLY  
•
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Error Flag Warns of Output Dropout  
Logic-Controlled Electronic Shutdown  
Output Programmable From 1.24 to 29V  
Careful design of the LP2950-N/LP2951-N has  
minimized all contributions to the error budget. This  
includes a tight initial tolerance (.5% typ.), extremely  
good load and line regulation (.05% typ.) and a very  
low output voltage temperature coefficient, making  
the part useful as a low-power voltage reference.  
Block Diagram and Typical Applications  
Figure 1. LP2950-N  
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.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2000–2013, Texas Instruments Incorporated  
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LP2951ACM-3.3/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LP2951ACM-3.3 TI

完全替代

 LP2950-N/LP2951-N Series of Adjustable Micropower Voltage Regulators
LP2951CM-3.3 TI

完全替代

 LP2950-N/LP2951-N Series of Adjustable Micropower Voltage Regulators
LP2951CM-3.3/NOPB TI

完全替代

 LP2950-N/LP2951-N Series of Adjustable Micropower Voltage Regulators

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