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MCP2025 bảng dữ liệu(PDF) 8 Page - Microchip Technology |
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MCP2025 bảng dữ liệu(HTML) 8 Page - Microchip Technology |
8 / 38 page MCP2025 DS20002306B-page 8 2012-2014 Microchip Technology Inc. Under specific ambient temperature and battery voltage range, the voltage regulator can output as high as 150 mA current. For current load capability of the voltage regulator, refer to Figures 2-8 and 2-9. The regulator requires an external output bypass capacitor for stability. See Figure 2-1 for correct capacity and ESR for stable operation. In worst-case scenarios, the ceramic capacitor may derate by 50%, based on tolerance, voltage and temperature. Therefore, in order to ensure stability, ceramic capacitors smaller than 10 µF may require a small series resistance to meet the ESR requirements, as shown in Table 1-3. FIGURE 1-3: VOLTAGE REGULATOR BLOCK DIAGRAM Note: The regulator has an overload current limit of approximately 250 mA. The regulator output voltage, VREG, is monitored. If output voltage VREG is lower than VSD, the voltage regulator will turn off. After a recovery time of about 3 ms, the VREG will be checked again. If there is no short circuit, (VREG >VSD), then the voltage regulator remains on. Note: A ceramic capacitor of at least 10 µF or a tantalum capacitor of at least 2.2 µF is recommended for stability. TABLE 1-3: RECOMMENDED SERIES RESISTANCE FOR CERAMIC CAPACITORS Resistance Capacitor 1 1µF 0.47 2.2 µF 0.22 4.7 µF 0.1 6.8 µF Pass Element Sampling Network Buffer VREG VBB VSS Fast Transient Loop VREF |
Số phần tương tự - MCP2025_14 |
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Mô tả tương tự - MCP2025_14 |
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