Linear Voltage Regulators
A Linear Voltage Regulator ensures the output voltage from the circuit is maintained at a specific voltage. The device acts as a variable resistor, continuously adjusting to maintain a constant output voltage. The regulated voltage must be lower than the input voltage. Linear voltage regulators are step-down converters which means that the output voltage is lower that the input. Simple voltage regulator contains a Zener Diode and a resistor but more complicated versions include elements like a voltage reference and error amplifiers.
A more specific type of regulator are Low Dropout Voltage Regulators (LDO) which can regulate voltage even when the power supply voltage is very close to the supply voltage. They have low noise and good ripple rejection making them crucial to maintaining a stable power supply in any power-management system.
Related links
- Voltage Regulators
- onsemi NCV7451MW0R2G Low Noise LDO, Linear Voltage Regulator...
- ON Semiconductor, 5 V Linear Voltage Regulator, 700mA, 1-Channel...
- Texas Instruments, -37 → -1.2 V Linear Voltage Regulator, 100mA,...
- Microchip LDO Regulator LR645N3-G
- ON Semiconductor KA278R33CTU, LDO Regulator, 2A, 3.3 V 4-Pin, TO-220F
- ON Semiconductor KA78R33CTU, LDO Regulator, 1A, 3.38 V 4-Pin, TO-220F
- ROHM BA033CC0T, LDO Regulator, 1A, 3.3 V 3-Pin, TO-220FP