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SA1117B bảng dữ liệu(PDF) 5 Page - Silan Microelectronics Joint-stock |
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SA1117B bảng dữ liệu(HTML) 5 Page - Silan Microelectronics Joint-stock |
5 / 8 page SA1117B HANGZHOU SILAN MICROELECTRONICS CO.,LTD REV:1.0 2008.08.12 Http://www.silan.com.cn Page 5 of 8 FUNCTION DESCRIPTION The SA1117B is a LDO regulator, it’ s pass transistor is made up of a single NPN transistor being driven by a PNP. The dropout voltage is defined as: VDROP = VBE+ VSAT. The SA1117B series of fixed and adjustable regulators are easy to use. Output voltages are 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V.On-chip thermal shut down provides protection against any combination of overload and ambient temperature that would create excessive junction temperature. The SA1117B requires an output capacitor for device stability. Its value of 22 µF tantalum covers all cases of bypassing the adjustment terminal. Without bypassing the adjustment terminal smaller capacitors can be used with equally good results which depend upon the application circuit. In general, linear regulator stability decreases with higher output currents. TYPICAL APPLICATION CIRCUIT Figure 1. Typical Fixed Output Voltage Figure 2. Typical Adjustable Output Voltage Note: The circuit and parameters are reference only, please set the parameters of the real application circuit based on the real test. |
Số phần tương tự - SA1117B |
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Mô tả tương tự - SA1117B |
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