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LM317S/NOPB bảng dữ liệu(PDF) 25 Page - Texas Instruments

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tên linh kiện LM317S/NOPB
Giải thích chi tiết về linh kiện  Wide Temperature Three-Pin Adjustable Regulator
PDF  48 Pages
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Trang chủ  http://www.ti.com
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LM317S/NOPB bảng dữ liệu(HTML) 25 Page - Texas Instruments

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LM317-N
LM317-N
LM317-N
LM117, LM317-N
www.ti.com
SNVS774P – MAY 2004 – REVISED OCTOBER 2015
Typical Applications (continued)
9.2.15 Adjustable 4-A Regulator
Using three LM317-N devices in parallel increases load current capability (Figure 33). Output voltage is set by
the variable resistor tied to the non-inverting terminal of the operational amplifier, and reference current to the
transistor is developed across the 100
Ω resistor. When output voltage rises, the operational amplifier corrects by
drawing current from the base, closing the transistor. This effectively pulls ADJ down and lowers the output
voltage through negative feedback.
Figure 33. Adjustable 4-A Regulator
Copyright © 2004–2015, Texas Instruments Incorporated
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