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LM317MKTPRG3 bảng dữ liệu(PDF) 8 Page - Texas Instruments |
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LM317MKTPRG3 bảng dữ liệu(HTML) 8 Page - Texas Instruments |
8 / 22 page LM317M SLVS297P – APRIL 2000 – REVISED MARCH 2014 www.ti.com Feature Description (continued) 7.3.4 Current Sources The two current sources represent the typical ‘adjust terminal current’ and typical ‘minimum current for regulation'. 7.4 Device Functional Modes 7.4.1 Normal operation The device OUTPUT terminal will source current necessary to make OUTPUT terminal 1.25-V greater than ADJUST terminal to provide output regulation. 7.4.2 Operation With Low Input Voltage The device requires up to 2.5-V headroom (Vin-Vout) to operate in regulation. With less headroom, the device may drop out and OUTPUT voltage will be INPUT voltage minus drop out voltage. 7.4.3 Operation at Light Loads The device passes its bias current to the OUTPUT terminal. The load or feedback must consume this minimum current for regulation or the output may be too high. 7.4.4 Operation In Self Protection When an overload occurs the device will shut down Darlington NPN output stage or reduce the output current to prevent device damage. The device will automatically reset from the overload. The output may be reduced or alternate between on and off until the overload is removed. 7.4.5 Operation at Light Loads The device passes its bias current to the OUTPUT terminal. The load or feedback must consume this minimum current for regulation or the output may be too high. 8 Submit Documentation Feedback Copyright © 2000–2014, Texas Instruments Incorporated Product Folder Links: LM317M |
Số phần tương tự - LM317MKTPRG3 |
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Mô tả tương tự - LM317MKTPRG3 |
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