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HM1513 Datasheet(PDF) 6 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

Part No. HM1513
Description  2A 380KHz 18V Buck DC to DC Converter
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Manufacturer  HMSEMI [Shenzhen Huazhimei Semiconductor Co., Ltd]
Direct Link  http://www.hmsemi.com/
Logo HMSEMI - Shenzhen Huazhimei Semiconductor Co., Ltd

HM1513 Datasheet(HTML) 6 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

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Shenzhen H&M Semiconductor Co.Ltd
http: //www.hmsemi.com
Test Circuit and Layout guidelines
Figure5. Standard Test Circuits and Layout Guides
Select R1 to be approximately 2K, use a 1% resistor for best stability.
C1 and CFF are optional; in order to increase stability and reduce the input power line noise, CIN and
C1 must be placed near to VIN and GND;
For output voltages greater than approximately 10V, an additional capacitor CFF is required. The
compensation capacitor is typically between 100 pf and 33 nf, and is wired in parallel with the output
voltage setting resistor, R2. It provides additional stability for high output voltage, low input-output
voltages, and/or very low ESR output capacitors, such as solid tantalum capacitors.
CFF=1/(31*1000*R2); This capacitor type can be ceramic, plastic, silver mica, etc. (Because of the
unstable characteristics of ceramic capacitors made with Z5U material, they are not recommended.)
2A 380KHz 18V Buck DC to DC Converter
HM1513
6


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