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NCP705_17

更新时间： 2024-09-14 00:58:35
品牌 Logo 应用领域
安森美 - ONSEMI /
页数 文件大小 规格书
20页 1732K
描述
LDO Voltage Regulator

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NCP705_17 数据手册

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NCP705  
500 mA, Ultra-Low  
Quiescent Current, IQ 13 mA,  
Ultra-Low Noise, LDO  
Voltage Regulator  
www.onsemi.com  
Noise sensitive RF applications such as Power Amplifiers in  
satellite radios, infotainment equipment, and precision  
instrumentation require very clean power supplies. The NCP705 is  
500 mA LDO that provides the engineer with a very stable, accurate  
voltage with ultra low noise and very high Power Supply Rejection  
Ratio (PSRR) suitable for RF applications. The device doesn’t require  
any additional noise bypass capacitor to achieve ultra−low noise  
performance. In order to optimize performance for battery operated  
portable applications, the NCP705 employs dynamic Iq management  
for ultra−low quiescent current consumption at light−load conditions  
and great dynamic performance.  
MARKING  
DIAGRAM  
1
WDFN6  
CASE 511BR  
XX M  
XX = Specific Device Code  
M
= Date Code  
PIN CONNECTIONS  
Features  
• Operating Input Voltage Range: 2.5 V to 5.5 V  
• Available − Fixed Voltage Option: 0.8 V to 3.5 V  
OUT  
N/C  
1
2
6
5
IN  
OUT  
ADJ  
1
2
6
5
IN  
N/C  
N/C  
GND  
GND  
Available − Adjustable Voltage Option: 0.8 V to 5.5 V−V  
• Reference Voltage 0.8 V  
DROP  
GND  
3
4
EN  
GND  
3
4
EN  
• Ultra−Low Quiescent Current of Typ. 13 mA  
WDFN6 2x2 mm  
(Top View)  
Adjustable Version  
(Top View)  
• Ultra−Low Noise: 12 mV  
from 100 Hz to 100 kHz  
RMS  
• Very Low Dropout: 230 mV Typical at 500 mA  
2% Accuracy Over Load/Line/Temperature  
•
ORDERING INFORMATION  
• High PSRR: 71 dB at 1 kHz  
See detailed ordering, marking and shipping information on  
page 19 of this data sheet.  
• Internal Soft−Start to Limit the Turn−On Inrush Current  
• Thermal Shutdown and Current Limit Protections  
• Stable with a 1 mF Ceramic Output Capacitor  
• Active Output Discharge for Fast Turn−Off  
• These are Pb−Free Devices  
Typical Applications  
• PDAs, Mobile Phones, GPS, Smartphones  
• Wireless Handsets, Wireless LAN, Bluetooth®, ZigBee®  
• Portable Medical Equipment  
• Other Battery Powered Applications  
V
V
V
V
IN  
OUT  
IN  
OUT  
IN  
OUT  
NCP705  
ADJ  
IN  
OUT  
NCP705  
R
1
C
1
EN  
C
C
OUT  
1 mF  
EN  
IN  
C
N/C  
C
IN  
OUT  
ON  
GND  
ON  
GND  
1 mF  
OFF  
1 mF  
1 mF  
OFF  
R
2
Fixed Voltage Version  
Adjustable Voltage Version  
Figure 1. Typical Application Schematics  
© Semiconductor Components Industries, LLC, 2014  
1
Publication Order Number:  
December, 2017 − Rev. 8  
NCP705/D  
1234567...20

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