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LP2985IM5X-3.2 PDF预览

LP2985IM5X-3.2

更新时间: 2024-11-05 22:57:35
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器电容器
页数 文件大小 规格书
21页 592K
描述
Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors

LP2985IM5X-3.2 数据手册

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March 2004  
LP2985  
Micropower 150 mA Low-Noise Ultra Low-Dropout  
Regulator in SOT-23 and micro SMD Packages  
Designed for Use with Very Low ESR Output Capacitors  
General Description  
Features  
n Ultra low dropout voltage  
The LP2985 is a 150 mA, fixed-output voltage regulator  
designed to provide ultra low-dropout and low noise in bat-  
tery powered applications.  
n Guaranteed 150 mA output current  
n Smallest possible size (SOT-23, micro SMD package)  
n Requires minimum external components  
n Stable with low-ESR output capacitor  
Using an optimized VIP (Vertically Integrated PNP) pro-  
cess, the LP2985 delivers unequalled performance in all  
specifications critical to battery-powered designs:  
<
n
1 µA quiescent current when shut down  
@
Dropout Voltage: Typically 300 mV  
150 mA load, and  
n Low ground pin current at all loads  
n Output voltage accuracy 1% (A Grade)  
n High peak current capability  
n Wide supply voltage range (16V max)  
n Low ZOUT: 0.3typical (10 Hz to 1 MHz)  
n Overtemperature/overcurrent protection  
n −40˚C to +125˚C junction temperature range  
n Custom voltages available  
@
7 mV 1 mA load.  
@
Ground Pin Current: Typically 850 µA 150 mA load, and  
@
75 µA 1 mA load.  
Enhanced Stability: The LP2985 is stable with output ca-  
pacitor ESR as low as 5 m, which allows the use of ceramic  
capacitors on the output.  
Sleep Mode: Less than 1 µA quiescent current when ON/  
OFF pin is pulled low.  
Smallest Possible Size: SOT-23 and micro SMD packages  
use absolute minimum board space.  
Applications  
n Cellular Phone  
Precision Output: 1% tolerance output voltages available  
(A grade).  
n Palmtop/Laptop Computer  
n Personal Digital Assistant (PDA)  
n Camcorder, Personal Stereo, Camera  
Low Noise: By adding a 10 nF bypass capacitor, output  
noise can be reduced to 30 µV (typical).  
Multiple voltage options, from 2.5V to 5.0V, are available as  
standard products. Consult factory for custom voltages.  
Block Diagram  
10014001  
VIP is a trademark of National Semiconductor Corporation.  
© 2004 National Semiconductor Corporation  
DS100140  
www.national.com  

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