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ISL80121IR50Z

更新时间： 2024-11-05 11:12:47
品牌 Logo 应用领域
英特矽尔 - INTERSIL 稳压器
页数 文件大小 规格书
11页 489K
描述
1A Ultra Low Dropout Linear Regulator with Programmable Current Limiting

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ISL80121IR50Z 数据手册

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1A Ultra Low Dropout Linear Regulator with  
Programmable Current Limiting  
ISL80121-5  
Features  
The ISL80121-5 is a low dropout voltage, single output LDO with  
programmable current limiting. This LDO operates from input  
voltages of 2.2V to 6V. The ISL80121-5 has a nominal output  
voltage of 5V. Other custom voltage options are available upon  
request.  
• ±1.8% V  
Accuracy Guaranteed Over Line, Load and  
T = -40°C to +125°C  
OUT  
J
• Very Low 130mV Dropout Voltage at V = 5.0V  
IN  
• High Accuracy Current Limit Programmable up to 1.75A  
• Very Fast Transient Response  
A sub-micron BiCMOS process is utilized for this product family to  
deliver the best in class analog performance and overall value.  
The programmable current limiting improves system reliability of  
applications. An external capacitor on the soft-start pin provides  
an adjustable soft-starting ramp. The ENABLE feature allows the  
part to be placed into a low quiescent current shutdown mode.  
• 200µV  
Output Noise  
RMS  
• Power Good Output  
• Programmable Soft-starting  
• Over-Temperature Protection  
• Small 10 Ld DFN Package  
This CMOS LDO will consume significantly lower quiescent  
current as a function of load compared to bipolar LDOs, which  
translates into higher efficiency and packages with smaller  
footprints. Quiescent current is modestly compromised to  
achieve a very fast load transient response.  
Applications  
• USB devices  
• Telecommunications and Networking  
• Medical Equipment  
• Instrumentation Systems  
• Routers and Switchers  
• Gaming  
Typical Applications  
ISL80121-5  
ISL80121-5  
5.0V ±1.8%  
VOUT  
5.4V ±10%  
VIN  
5.0V ±1.8%  
VOUT  
5.4V ±10%  
VIN  
10  
9
1
2
10  
9
1
2
VIN  
VIN  
VOUT  
VOUT  
VIN  
VIN  
VOUT  
C
C
IN  
OUT  
10µF  
C
IN  
C
OUT  
10µF  
R
VOUT  
SENSE  
10Ω  
10µF  
10µF  
8
3
8
ISET  
SENSE  
3
4
R
ISET  
SENSE  
PG  
PG  
100kΩ  
R
10kΩ  
ISET  
R
PG  
100kΩ  
ON  
ON  
7
6
7
6
4
OFF  
ENABLE  
SS  
OFF  
ENABLE  
PG  
PGOOD  
PGOOD  
SS  
GND  
GND  
C
5
C
SS  
SS  
5
I
= 0.75A  
2.9  
= 0.75 + ------------------------------------  
LIMIT  
(default)  
I
LIMIT  
R
(kΩ)  
SET  
December 8, 2010  
FN7713.1  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2010. All Rights Reserved  
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.  
All other trademarks mentioned are the property of their respective owners  
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