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NCP4561/D

更新时间： 2024-10-01 23:53:27
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其他 - ETC 稳压器
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16页 125K
描述
Ultra Low-Noise Low Dropout Voltage Regulator with 1.0 V ON/OFF Control

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NCP4561/D 数据手册

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NCP4561  
Advance Information  
Ultra Low-Noise Low  
Dropout Voltage Regulator  
with 1.0 V ON/OFF Control  
The NCP4561 is a Low DropOut (LDO) regulator featuring  
excellent noise performances. Thanks to its innovative concept, the  
circuit reaches an incredible 40 µVRMS noise level without an  
external bypass capacitor. Housed in a small SOT–23 5 leads–like  
package, it represents the ideal designer’s choice when space and  
noise are at premium.  
http://onsemi.com  
5
1
The absence of external bandgap capacitor unleashes the response  
time to a wake–up signal and makes it stay within 40 µs (in repetitive  
mode), pushing the NCP4561 as a natural candidate in portable  
applications.  
TSOP–5  
SN SUFFIX  
CASE 483  
The NCP4561 also hosts a novel architecture which prevents  
excessive undershoots when the regulator is the seat of fast transient  
bursts, as in any bursting systems.  
Finally, with a static line regulation better than –75 dB, it naturally  
shields the downstream electronics against choppy lines.  
PIN CONNECTIONS AND  
MARKING DIAGRAM  
5
ON/OFF  
GND  
1
2
3
V
Features  
in  
• Ultra Low–Noise: 150 nV/√Hz @ 100 Hz, 40 µVRMS 100 Hz –  
100 kHz Typical, Iout = 60 mA, C = 1.0 µF  
o
• Fast Response Time from OFF to ON: 40 µs Typical at a 200 Hz  
Repetition Rate  
4
V
out  
NC  
• Ready for 1.0 V Platforms: ON with a 900 mV High Level  
(Top View)  
• Nominal Output Current of 80 mA with a 100 mA Peak Capability  
• Typical Dropout of 90 mV @ 30 mA, 160 mV @ 80 mA  
• Ripple Rejection: 70 dB @ 1.0 kHz  
P28 = Device Code  
Y
= Year  
W
= Work Week  
• 1.5% Output Precision @ 25°C  
• Thermal Shutdown  
ORDERING INFORMATION  
Voltge  
Applications  
• Noise Sensitive Circuits: VCOs RF Stages, etc.  
• Bursting Systems (TDMA Phones)  
• All Battery Operated Devices  
Device  
Shipping  
Output*  
NCP4561SNT1–28  
2.8 V  
3000/Tape & Reel  
* Contact your ON Semiconductor sales  
representative for other output voltage values.  
V
in  
5
4
ON/  
OFF  
On/Off  
Thermal  
Shutdown  
1
3
Band Gap  
Reference  
NC  
V
out  
*Current Limit  
*Antisaturation Protection  
*Load Transient Improvement  
2
GND  
Figure 1. Simplified Block Diagram  
This document contains information on a new product. Specifications and information  
herein are subject to change without notice.  
Semiconductor Components Industries, LLC, 2001  
1
Publication Order Number:  
February, 2001 – Rev. 0  
NCP4561/D  
1234567...16

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