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info:lm317l_adj_volt_reg_notes

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info:lm317l_adj_volt_reg_notes [2008/08/08 21:21] – tomgeeinfo:lm317l_adj_volt_reg_notes [2009/03/26 10:14] (current) – tomgee
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 Specs Specs
 200mA. Vin-Vout=1.25V to 37V (no limit on voltage otherwise). Requires 2 resistors to regulate: Vout = 1.25(1 + R2/R1). R1 usually = 240 ohm. Pinout (left to right, bottom view): ADJ, Vout, Vin. Connect R1 to Vout and ADJ. Connect R2 to ADJ and ground. If your output has any capacitance then protect the regulator from backflow surges with a diode. Can also be used as a current regulator if you replace R2 with your device (I = 1.2/R1). 200mA. Vin-Vout=1.25V to 37V (no limit on voltage otherwise). Requires 2 resistors to regulate: Vout = 1.25(1 + R2/R1). R1 usually = 240 ohm. Pinout (left to right, bottom view): ADJ, Vout, Vin. Connect R1 to Vout and ADJ. Connect R2 to ADJ and ground. If your output has any capacitance then protect the regulator from backflow surges with a diode. Can also be used as a current regulator if you replace R2 with your device (I = 1.2/R1).
 +
 +|Volts|R1|R2|
 +|5|240|715|
 +|3.3|240|394|
  
 {{info:lm317b.jpg|}} {{info:lm317b.jpg|}}
 +
 +{{info:lm317_packages.jpg|}}
  
 ===== LM340 ===== ===== LM340 =====
 {{info:lm340.jpg|}} {{info:lm340.jpg|}}
 {{info:lm340_apps.jpg|}} {{info:lm340_apps.jpg|}}
 +
 +===== LM7805 =====
 +{{info:lm7805.jpg|}}
info/lm317l_adj_volt_reg_notes.1218244892.txt.gz · Last modified: 2008/08/08 21:21 by tomgee