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NCP3985

更新时间： 2024-09-20 10:28:07
品牌 Logo 应用领域
安森美 - ONSEMI 稳压器
页数 文件大小 规格书
10页 120K
描述
Micropower, 150 mA Low-Noise, High PSRR, Ultra-Low Dropout BiCMOS Voltage Regulator

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NCP3985 数据手册

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NCP3985  
Micropower, 150 mA  
Low-Noise, High PSRR,  
Ultra-Low Dropout BiCMOS  
Voltage Regulator  
http://onsemi.com  
MARKING  
DIAGRAM  
The NCP3985 is 150 mA LDO that provides the engineer with a  
very stable, accurate voltage with low noise and high Power Supply  
Rejection Ratio (PSRR) suitable for sensitive applications. In order to  
optimize performance for battery operated portable applications, the  
NCP3985 employs an advanced BiCMOS process to combine the  
benefits of low noise and superior dynamic performance of bipolar  
elements with very low ground current consumption at full loads  
offered by CMOS.  
5
1
5
TSOP-5  
SN SUFFIX  
CASE 483  
XXXAYWG  
G
1
The NCP3985 is stable with small, low value capacitors and is  
available in TSOP-5 package.  
XXX = Specific Device Code  
A
Y
W
G
= Assembly Location  
= Year  
= Work Week  
Features  
= Pb-Free Package  
•ꢀOutput Voltage Options:  
(Note: Microdot may be in either location)  
- 1.8 V, 2.5 V, 2.75 V, 2.8 V, 3.0 V, 3.3 V  
- Contact Factory for Other Voltage Options  
•ꢀOutput Current Limit 200 mA  
PIN ASSIGNMENT  
•ꢀLow Noise (typ 20 mV  
)
rms  
V
out  
V
in  
•ꢀHigh PSRR (typ 70 dB)  
GND  
CE  
•ꢀStable with Ceramic Output Capacitors as low as 1 mF  
•ꢀLow Sleep Mode Current (max 1 mA)  
•ꢀActive Discharge Circuit  
C
noise  
(Top View)  
•ꢀCurrent Limit Protection  
•ꢀThermal Shutdown Protection  
•ꢀDirect Replacement for LP3985  
•ꢀThese are Pb-Free Devices  
ORDERING INFORMATION  
See detailed ordering, marking and shipping information in the  
package dimensions section on page 9 of this data sheet.  
Typical Applications  
•ꢀCellular Telephones  
•ꢀNoise Sensitive Applications (Video, Audio)  
•ꢀAnalog Power Supplies  
•ꢀPDAs / Palmtops / Organizers / GPS  
•ꢀBattery Supplied Devices  
V
out  
V
in  
V
out  
V
in  
NCP3985  
C
GND  
CE  
noise  
C
noise  
C
C
in  
out  
Figure 1. Typical Application Schematic  
©ꢀ Semiconductor Components Industries, LLC, 2008  
April, 2008 - Rev. 1  
1
Publication Order Number:  
NCP3985/D  
1234567...10

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