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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MCP1802 датащи(PDF) 13 Page - Microchip Technology |
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MCP1802 датащи(HTML) 13 Page - Microchip Technology |
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13 / 24 page  © 2007 Microchip Technology Inc. DS22053A-page 13 MCP1802 5.0 FUNCTIONAL DESCRIPTION The MCP1802 CMOS low dropout linear regulator is intended for applications that need the low current consumption while maintaining output voltage regulation. The operating continuous load range of the MCP1802 is from 0 mA to 300 mA. The input operating voltage range is from 2.0V to 10.0V, making it capable of operating from three or more alkaline cells or single and multiple Li-Ion cell batteries. 5.1 Input The input of the MCP1802 is connected to the source of the P-Channel PMOS pass transistor. As with all LDO circuits, a relatively low source impedance (10 Ω) is needed to prevent the input impedance from causing the LDO to become unstable. The size and type of the capacitor needed depends heavily on the input source type (battery, power supply) and the output current range of the application. For most applications a 0.1 µF ceramic capacitor will be sufficient to ensure circuit stability. Larger values can be used to improve circuit AC performance. 5.2 Output The maximum rated continuous output current for the MCP1802 is 300 mA. A minimum output capacitance of 1.0 µF is required for small signal stability in applications that have up to 300 mA output current capability. The capacitor type can be ceramic, tantalum or aluminum electrolytic. |
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