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SC8863-XXXEVB PDF预览

SC8863-XXXEVB

更新时间： 2024-01-05 07:47:06
品牌 Logo 应用领域
商升特 - SEMTECH 稳压器
页数 文件大小 规格书
11页 225K
描述
150mA Ultra Low Dropout, Low Noise Regulator

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SC8863-XXXEVB 数据手册

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SC8863  
150mA Ultra Low Dropout,  
Low Noise Regulator  
POWER MANAGEMENT  
Description  
Features  
The SC8863 is a low dropout linear regulator that  
operates from a +2.5V to +6.0V input range and  
delivers up to 150mA. A PMOS pass transistor allows  
the low 110µA supply current to remain independent of  
load, making these devices ideal for battery operated  
portable equipment such as cellular phones, cordless  
phones and personal digital assistants.  
‹ Guaranteed 150mA output current  
‹ Works with ceramic capacitors  
‹ Fixed or adjustable output  
‹ Very small external components  
‹ Low 75µVRMS output noise  
‹ Very low supply current  
‹ Thermal overload protection  
‹ Reverse battery protection  
‹ Low power shutdown  
‹ Full industrial temperature range  
‹ Very low profile packaging available (1mm max.  
height)  
‹ Surface mount packaging (SOT-23-5 and  
TSOT-23-5)  
The SC8863 output voltage can be preset or adjusted  
with an external resistor divider. Other features include  
low power shutdown, short circuit protection, thermal  
shutdown protection and reverse battery protection. The  
SC8863 comes in the tiny 5 lead SOT-23 package (lead  
free, fully WEEE and RoHS compliant available) and the  
ultra low profile 5 lead TSOT-23.  
Applications  
‹ Battery Powered Systems  
‹ Cellular Telephones  
‹ Cordless Telephones  
‹ Personal Digital Assistants  
‹ Portable Instrumentation  
‹ Modems  
‹ PCMCIA cards  
Typical Application Circuits  
U1  
IN  
SC8863  
3
1
4
VIN > VOUT + VD(MAX)  
VOUT @ IOUT up to 150mA  
OUT  
5
EN  
SET  
GND  
2
C1  
C2  
1uF Ceramic  
1uF Ceramic  
Internally Preset Output Voltage  
U1  
IN  
SC8863  
OUT  
3
1
4
5
VIN > VOUT + VD(MAX)  
VOUT @ IOUT up to 150mA  
R1  
EN  
SET  
GND  
2
R1  
R2  
VOUT = 1.250 • 1+  
R2  
C1  
10k  
C2  
2.2uF Ceramic  
1uF Ceramic  
Externally Preset Output Voltage(1)  
Note:  
(1) Select R1 and R2 such that the current flowing through them is ≥ 10µA (i.e. R2 ≤ 120kΩ). A value of 10kΩ  
is recommended for R2. Please see Component Selection - Externally Set Output on page 7.  
Revision: November 8, 2005  
1
www.semtech.com  
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