LM150/LM350A/LM350 3-Amp Adjustable Regulators
May 1998
LM150/LM350A/LM350 3-Amp Adjustable Regulators
General Descrip...
LM150/LM350A/LM350 3-Amp Adjustable Regulators
May 1998
LM150/LM350A/LM350 3-Amp Adjustable Regulators
General Description
The LM150 series of adjustable 3-terminal positive
voltage regulators is capable of supplying in excess of 3A over a 1.2V to 33V output range. They are exceptionally easy to use and require only 2 external resistors to set the output
voltage. Further, both line and load regulation are comparable to discrete designs. Also, the LM150 is packaged in standard transistor packages which are easily mounted and handled. In addition to higher performance than fixed regulators, the LM150 series offers full overload protection available only in IC’s. Included on the chip are current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is accidentally disconnected. Normally, no
capacitors are needed unless the device is situated more than 6 inches from the input filter
capacitors in which case an input bypass is needed. An output capacitor can be added to improve transient response, while bypassing the adjustment pin will increase the regulator’s ripple rejection. Besides replacing fixed regulators or discrete designs, the LM150 is useful in a wide variety of other applications. Since the regulator is “floating” and sees only the input-to-output differential
voltage, supplies of several hundred volts can be regulated as long as the maximum input to output differential...