Texas Instruments LM317-N
The LM117 and LM317-N series of adjustable 3-pin positive voltage regulators are capable of supplying in excess of 1.5 A over a 1.25-V to 37-V output range and a wide temperature range. They are exceptionally easy to use and require only two external resistors to set the output voltage.FEATURES
●1 For a newer drop-in alternative, see the LM317● Typ. 0.1% load regulation
● Typ. 0.01%/V line regulation
● 1.5-A output current
● Adjustable output down to 1.25 V
● Current limit constant with temperature
● 80-dB ripple rejection
● Short-circuit protected output
● −55°C to 150°C operating temperature range (LM117) 2
APPLICATIONS
● Multifunction printers● AC drive power stage modules
● Electricity meters
● Servo drive control modules
● Merchant network and server PSU Typical Application LM317-N *Needed if device is more than 6 inches from filter capacitors. †Optional—improves transient response †† VOUT = 1.25 V æçè1+ R2 R1 ö ÷ø + IADJ (R2 ) 1 3
DESCRIPTION
Further, both line and load regulation are better than standard fixed regulators. The LM117 and LM317-N offer full overload protection such as current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected. Ty...