LM317A Datasheet | Texas Instruments

Features - 1 For a newer drop-in alternative, see the LM317 - Typical 0.005%/V line regulation - 1% output voltage tolerance - 1.5-A output current - Adjustable output down to 1.25 V - Input-output differential up to 40 V - Current limit constant with temperature - No output capacitor required - Short-circuit protected output - - 40°C to 125°C operating temperature range 2 Applications - Automotive LED lighting - Battery chargers - Post regulation for switching supplies - Constant-current regulator - Microprocessor supplies Typical Application - 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 ) 3 Description The LM317A adjustable 3-terminal, positive-voltage regulators are capable of supplying current in excess of 1.5 A over a 1.25-V to 37-V output range and provide 1% output-voltage accuracy. Both line regulation and load regulation are better achieved with the LM317A device...