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ISL80101-ADJ

更新时间： 2024-10-01 11:12:43
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英特矽尔 - INTERSIL /
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High Performance 1A LDO

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ISL80101-ADJ 数据手册

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High Performance 1A LDO  
ISL80101  
Features  
The ISL80101 is a low voltage, high current, single output LDO  
specified at 1A output current. This LDO operates from input  
voltages of 2.2V to 6V. Fixed output voltage options are  
available in 1.8V, 2.5V, 3.3V and 5.0V versions. Other custom  
voltage options are available upon request. For the adjustable  
output version of the ISL80101, please refer to the  
ISL80101-ADJ datasheet.  
• ±0.2% Initial V  
Accuracy  
OUT  
• ±1.8% V  
OUT  
Accuracy Guaranteed Over Line, Load and  
T = -40°C to +125°C  
J
• Very Low 130mV Dropout Voltage at V  
• Very Fast Transient Response  
• Programmable Soft-starting  
• Power-Good Output  
= 2.5V  
OUT  
A sub-micron BiCMOS process is utilized for this product family  
to deliver the best in class analog performance and overall  
value. This CMOS LDO consumes significantly lower quiescent  
current as a function of load compared to bipolar LDOs, which  
translates into higher efficiency and packages with smaller  
footprints. State of the art internal compensation achieves a  
very fast load transient response. 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. A Power-Good logic output  
signals a fault condition.  
• Excellent 58dB PSRR at 1kHz  
• Current Limit Protection  
• Thermal Shutdown Function  
• Available in a 10 Ld DFN Package  
• Pb-Free (RoHS Compliant)  
Applications  
• DSP, FPGA and µP Core Power Supplies  
Table 1 shows the differences between the ISL80101 and  
others in its family:  
• Noise-Sensitive Instrumentation Systems  
• Post Regulation of Switched Mode Power Supplies  
• Industrial Systems  
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS  
PROGRAMMABLE  
I
ADJ or FIXED  
LIMIT  
• Medical Equipment  
PART NUMBER  
ISL80101-ADJ  
ISL80101  
I
(DEFAULT)  
V
LIMIT  
No  
OUT  
• Telecommunications and Networking Equipment  
• Servers  
1.75A  
ADJ  
No  
1.75A  
1.8V, 2.5V,  
3.3V, 5.0V  
• Hard Disk Drives (HD/HDD)  
ISL80101A  
ISL80121-5  
Yes  
Yes  
1.62A  
0.75A  
ADJ  
Related Literature  
• See AN1592, “ISL80101 High Performance 1A LDO  
Evaluation Board User Guide”  
5.0V  
5.4V ± 10%  
10µF  
5.0V ± 1.8%  
10µF  
140  
120  
100  
80  
1
2
10  
9
V
V
V
V
IN  
OUT  
IN  
OUT  
C
C
IN  
OUT  
3
4
10k  
R
100k  
SENSE  
ISL80101  
3
R
PG  
60  
7
6
40  
ENABLE  
SS  
PG  
20  
0
V
= 2.5V  
OUT  
0.01µF  
GND  
C
0
0.2  
0.4  
0.6  
0.8  
1.0  
SS  
5
OUTPUT CURRENT (A)  
FIGURE 2. DROPOUT vs LOAD CURRENT  
FIGURE 1. TYPICAL APPLICATION CIRCUIT  
August 31, 2011  
FN6931.1  
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. 2009, 2011. 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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