When thinking of designing a power supply circuit for any application specific electronic circuits, we cannot refrain from voltage regulator IC, as it helps reduce the complexity of power supply circuit.These components are of crucial importance in maintaining stable voltage levels and for preventing the functional circuit from distortion and over-voltage, ensuring that devices operate within specified parameters.
Over the period, we have created a list of voltage regulator ICs that are popular and have proven effective in various applications, each with different specifications and similar functionalities.
In this article, we will give you a selection of popular voltage regulators, detailing their key features, and general use cases. Whether you are working on power supply to a micro controller or need a regulated voltage for a high-frequency application.
This Voltage Regulator IC List will give you the insight of the capabilities of these various ICs at one place which could be essential for choosing right regulator for your circuit design.
78XX series of voltage regulator
7805, 7809, 7810, 7812, 7815, 7818, 7824
LMÂ series of voltage regulator
LM2940, LM117 3.3V, LM117 ADJ, LM2576, LM317
Other popular voltage regulators
MCP1700, MCP1825, TPS7A47, TPS7A33
Dual/ Negative Voltage Regulator IC
LM337, LTC1044, TL784, MAX859, MC7905, L7905
Specification of linear regulators:
Below is the input voltage, dropout voltage, maximum output current and regulated output voltage of some popular linear voltage regulators.
5V regulator IC List
LM7805, MIC5205, REG117-5.0, LM295, LT/ LM1084-5.0, LM317, SPX/ LM1117-5.0, LM/ LT1085-5.0, LP2950, MIC29302, TPS76350, LM350, UA78M05
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LM7805
Description: Low Dropout (LDO) Linear Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 1A (800mA recommended for extended reliability)
Dropout Voltage: ~1.1V
LM1117-5.0
Description: Low Dropout (LDO) Linear Voltage Regulator
Output Voltage: 5V ± 1%
Output Current: Up to 800mA
Dropout Voltage: ~1.1V at 800mA (can be slightly higher at lower currents)
LM2940
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 1A
Dropout Voltage: ~0.5V at 1A (typically lower at lighter loads)
MIC5205
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 150mA
Dropout Voltage: ~30mV at 1mA (typically 100mV at 150mA)
TPS7A47
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 1A
Dropout Voltage: ~40mV at light load (typically 100mV at 1A)
REG117-5.0 Â
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 500mA
Dropout Voltage: ~0.6V at 500mA
LM295
Description: Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 1A
Dropout Voltage: ~1.3V at 1A
LT/LM1084-5.0
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 5A
Dropout Voltage: ~1.1V at 5A (typically lower at lighter loads)
LM317
Description: Adjustable Voltage Regulator
Output Voltage: 1.25V to 37V (adjustable to 5V)
Output Current: Up to 1.5A
Dropout Voltage: ~3V at 1.5A
LM/LT1085-5.0
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 3A
Dropout Voltage: ~1.1V at 3A
LP2950
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 100mA
Dropout Voltage: ~40mV at light load (typically 150mV at 100mA)
MIC29302
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 3A
Dropout Voltage: ~40mV at light load (typically 400mV at 3A)
TPS76350
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 500mA
Dropout Voltage: ~40mV at light load (typically 150mV at 500mA)
LM350
Description: Adjustable Voltage Regulator
Output Voltage: 1.25V to 33V (adjustable to 5V)
Output Current: Up to 3A
Dropout Voltage: ~2-3V at 3A
UA78M
Description: Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 500mA
Dropout Voltage: ~1.5V at 500mA
TPS7A47 Â
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 5V ± 2% (5V nominal)
Output Current: Up to 1A
Dropout Voltage: ~40mV at light load (typically 100mV at 1A)
For more specific and accurate data please check the manufacturers data-sheet information for design considerations and device operating conditions.
Miscellaneous Voltage Regulators List
TPS7A33
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 3.3V ± 2%
Output Current: Up to 1A
Dropout Voltage: ~40mV at light load (typically 150mV at 1A)
LM 7809
Description: 3 Terminal Positive Voltage Regulator
Output Voltage: 9V ± 2%
Output Current: Up to 1A
Dropout Voltage: ~2V at 1A
LM 7810
Description: 3 Terminal Positive Voltage Regulator
Output Voltage: 10V ± 2%
Output Current: Up to 1A
Dropout Voltage: ~2V at 1A
LM 7812
Description:Â 3 Terminal Positive Voltage Regulator
Output Voltage: 12V ± 2%
Output Current: Up to 1A
Dropout Voltage: ~2V at 1A
LM 7815
Description: 3 Terminal Positive Voltage Regulator
Output Voltage: 15V ± 2%
Output Current: Up to 1A
Dropout Voltage: ~2V at 1A
LM 7818
Description: 3 Terminal Positive Voltage Regulator
Output Voltage: 18V ± 2%
Output Current: Up to 1A
Dropout Voltage: ~2V at 1A
LM 7824
Description: 3 Terminal Positive Voltage Regulator
Output Voltage: 24V ± 2%
Output Current: Up to 1A
Dropout Voltage: ~2V at 1A
LM2940 Â
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 5V ± 2%
Output Current: Up to 1A
Dropout Voltage: ~0.5V at 1A (typically lower at lighter loads)
LM117 (3.3V)
Description: Adjustable Voltage Regulator
Output Voltage: 3.3V (adjustable)
Output Current: Up to 1.5A
Dropout Voltage: ~3V at 1.5A
LM117 (Adjustable)
Description: Adjustable Voltage Regulator
Output Voltage: 1.25V to 37V (adjustable)
Output Current: Up to 1.5A
Dropout Voltage: ~3V at 1.5A
LM2576 Â
Description: Switching Voltage Regulator (Buck Converter)
Output Voltage: 5V, 12V, 15V, or adjustable (depending on version)
Output Current: Up to 3A
Dropout Voltage: Typically around 1.5V (depends on the input/output voltage difference)
LM317 – ADJ
Description: Adjustable Voltage Regulator
Output Voltage: 1.25V to 37V (adjustable)
Output Current: Up to 1.5A
Dropout Voltage: ~3V at 1.5A
MCP1700
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 3.3V or 5V (depending on version)
Output Current: Up to 250mA
Dropout Voltage: ~30mV at 1mA (typically 80mV at 250mA)
MCP1825 Â
Description: Low Dropout (LDO) Voltage Regulator
Output Voltage: 3.3V, 5V, or adjustable (depending on version)
Output Current: Up to 1A
Dropout Voltage: ~40mV at light load (typically 100mV at 1A)
What is LM, UA SPX LT MIC, TPSÂ used as prefix in the nomenclature of these IC?
LM: Used by Texas Instruments for a series of linear regulators and analog ICs, standing for “Linear Monolithic.”
UA: Indicates specific analog ICs from Texas Instruments, often related to op-amps and voltage regulators.
SPX: A prefix from Exar Corporation (now part of MaxLinear) for various voltage regulators, including low-dropout types.
LT: Represents products from Linear Technology (now part of Analog Devices), known for high-performance analog ICs.
MIC: Used by Microchip Technology for a range of ICs, including low-dropout voltage regulators.
TPS: A Texas Instruments prefix for power management ICs, including voltage regulators and converters.
Moreover, we encourage the readers who have worked on other voltage regulators that stand out in their applications. You can share the kind of regulator IC do you most in your projects so that other people can also identify the best options for their project.