Voltage Regulators

Voltage regulators are ICs used to generate a stable and consistent voltage within a circuit. They take an input voltage and convert this into a fixed output voltage. Even if the input voltage changes, the regulator will continue to provide the same output. The voltage regulator will take the output voltage and compare it to a reference voltage. It will then adjust the pass device to help manage the output voltage. This helps to regulate the voltage throughout a circuit design, dependant on where the voltage regulator(s) are.

Voltage regulators are essential in electronic circuits that include components that require a particular voltage input. For example, a processor. The input voltage, output voltage and output current are all important things to consider when choosing a voltage regulator IC.

Voltage regulators cannot convert the voltage from AC to DC, for example. If you require voltage conversion to run in parallel to your voltage regulator, please see our range of Digital to Analogue Converters (DACs) or Analogue to Digital Converters (ADCs).

Types of voltage regulator

Buck-Boost Switching Regulator
Charge Pump
Linear Voltage Regulator
LDO (Low Dropout) Voltage Regulator

Where are voltage regulators used?

Voltage regulators are found in most electronics circuits that require voltage management or voltage regulation. This includes chargers, power supply units (PSUs), telecommunications and automotive applications.

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STMicroelectronics ST1PS01EJR, 1 Buck Boost Switching, Switching Regulator 400mA, 1.8 → 3.3 V, 2 MHz 8-Pin, Flip RS 제품 번호: 192-4839 제조사 부품 번호: ST1PS01EJR Datasheets: ₩2,188.32 개당가격(5개가 1팩안에)	STMicroelectronics	Switching Regulator	Step Down	400mA	Buck Boost Switching	1	1.8 → 3.3 V	-	-	-	Surface Mount	-	Flip Chip	-	8	-	Fixed	-	2 MHz	94 (Typ.)%	1.44 x 1.14 x 0.37mm	0.37mm	5.5 V	+85 °C	1.8 V	-40 °C
STMicroelectronics L7986TR, 1 Linear Voltage, Voltage Regulator 3A, 0.6 → 38 V 10-Pin, VFDFPN RS 제품 번호: 188-9305 제조사 부품 번호: L7986TR Datasheets: ₩3,735.56 개당	STMicroelectronics	-	-	3A	Linear Voltage	1	0.6 → 38 V	-	-	-	Surface Mount	Negative	VFDFPN	2.4mA	10	-	Adjustable	-	-	-	3.15 x 3.15 x 0.95mm	0.95mm	38 V	+150 °C	4.5 V	-40 °C
Texas Instruments LP2980IM5-ADJ/NOPB, 1 Low Dropout Voltage, Voltage Regulator 50mA, 1.23 → 15 V 5-Pin, SOT-23 RS 제품 번호: 102-5744 제조사 부품 번호: LP2980IM5-ADJ/NOPB Datasheets: ₩736.96 개당가격(1000개가 1릴안에)	Texas Instruments	-	-	50mA	Low Dropout Voltage	1	1.23 → 15 V	6 mV	±1%	-	Surface Mount	Positive	SOT-23	-	5	1.243V	Adjustable	-	-	-	2.92 x 1.6 x 1.02mm	1.02mm	16 V	+125 °C	2.5 V	-40 °C
STMicroelectronics STLQ015M18R, 1 Linear Voltage, Voltage Regulator 150mA, 1.8 V 5-Pin, SOT-23 RS 제품 번호: 188-9299 제조사 부품 번호: STLQ015M18R Datasheets: ₩661.76 개당가격(25개가 1팩안에)	STMicroelectronics	-	-	150mA	Linear Voltage	1	1.8 V	±0.01 %/V	±3%	±0.002 %/mA	Surface Mount	-	SOT-23	2.4µA	5	-	Fixed	-	-	-	2.95 x 1.6 x 1.3mm	1.3mm	5.5 V	+125 °C	1.5 V	-40 °C
Texas Instruments LM317MDTX/NOPB, 1, Regulator 500mA, 1.2 V → 37 V V 3-Pin, SOIC RS 제품 번호: 208-8568 제조사 부품 번호: LM317MDTX/NOPB Datasheets: ₩1,278.40 개당가격(10개가 1팩안에)	Texas Instruments	-	-	500mA	-	1	1.2 V → 37 V V	-	1.5%	-	Surface Mount	Positive	SOIC	-	3	-	Adjustable	-	-	-	-	-	-	-	-	-
Infineon TDM3885XUMA1, 3 DC-DC, Voltage Regulator 4A, 0.5 → 5 V RS 제품 번호: 252-2787 제조사 부품 번호: TDM3885XUMA1 Datasheets: ₩10,584.40 개당	Infineon	-	Buck Regulator	4A	DC-DC	3	0.5 → 5 V	-	-1 → +1%	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Texas Instruments LM317S/NOPB, 1 Linear Voltage, Voltage Regulator 1.5A, 1.2 → 37 V 3-Pin, D2PAK (TO-263) RS 제품 번호: 533-5733 제조사 부품 번호: LM317S/NOPB Datasheets: ₩3,760.00 개당	Texas Instruments	-	-	1.5A	Linear Voltage	1	1.2 → 37 V	0.04 %/V	-	0.5 %	Surface Mount	Positive	D2PAK (TO-263)	-	3	1.25V	Adjustable	-	-	-	10.16 x 8.64 x 4.57mm	4.57mm	40 V	+125 °C	4.2 V	0 °C
United Automation CSR2-10E Linear Voltage, Voltage Regulator 10A, 230 V 3-Pin RS 제품 번호: 655-638 제조사 부품 번호: CSR2-10E Datasheets: ₩82,250.00 개당	United Automation	-	-	10A	Linear Voltage	-	230 V	-	-	-	Panel Mount	-	-	-	3	-	Adjustable	-	-	-	43 x 36 x 42.5mm	42.5mm	230 V	+75 °C	-	0 °C
Texas Instruments LM2937IMP-3.3/NOPB, 1 Low Dropout Voltage, Voltage Regulator 400mA, 3.3 V 3+Tab-Pin, SOT-223 RS 제품 번호: 761-5599 제조사 부품 번호: LM2937IMP-3.3/NOPB Datasheets: ₩3,587.04 개당가격(5개가 1팩안에)	Texas Instruments	-	-	400mA	Low Dropout Voltage	1	3.3 V	33 mV	5%	33 mV	Surface Mount	Positive	SOT-223	20mA	3+Tab	-	Fixed	-	-	-	6.5 x 3.56 x 1.6mm	1.6mm	26 V	+85 °C	4.75 V	-40 °C
onsemi NCP114ASN180T1G, 1 Low Dropout Voltage, Voltage Regulator 600mA, 1.8 V 5-Pin, TSOP RS 제품 번호: 170-3370 제조사 부품 번호: NCP114ASN180T1G Datasheets: ₩107.16 개당가격(3000개가 1릴안에)	onsemi	-	-	600mA	Low Dropout Voltage	1	1.8 V	0.1 %/V	±2%	45 mV	Surface Mount	Positive	TSOP	95µA	5	-	Fixed	-	-	-	3.15 x 1.65 x 1mm	1mm	5.5 V	+150 °C	1.7 V	-
onsemi NCP59801CML180TCG, 1 Low Noise LDO, LOD Voltage Regulator 1A, 1.8 V 8-Pin, DFNW8 RS 제품 번호: 284-9022 제조사 부품 번호: NCP59801CML180TCG Datasheets: ₩1,049.04 개당가격(5개가 1팩안에)	onsemi	-	LDO	1A	Low Noise LDO	1	1.8 V	-	±0.7%	-	-	-	DFNW8	-	8	-	-	-	-	-	-	-	-	-	-	-
STMicroelectronics LD1117ASTR, 1 Low Dropout Voltage, Voltage Regulator 1.2A, 1.25 → 15 V 3+Tab-Pin, SOT-223 RS 제품 번호: 714-7806 제조사 부품 번호: LD1117ASTR Datasheets: ₩1,054.68 개당가격(20개가 1팩안에)	STMicroelectronics	-	-	1.2A	Low Dropout Voltage	1	1.25 → 15 V	6 mV	±2%	10 mV	Surface Mount	Positive	SOT-223	-	3+Tab	1.275V	Adjustable	-	-	-	6.5 x 3.5 x 1.8mm	1.8mm	10 V	+125 °C	-	0 °C
Holtek HT7533-1-SOT89, 1 Low Dropout Voltage, Voltage Regulator 100mA, 3.3 V 3-Pin, SOT-89 RS 제품 번호: 170-9148 제조사 부품 번호: HT7533-1-SOT89 Datasheets: ₩885.48 개당가격(1000개가 1릴안에)	Holtek	-	-	100mA	Low Dropout Voltage	1	3.3 V	0.2 %/V	±3%	60 mV	Surface Mount	Positive	SOT-89	4µA	3	-	Fixed	-	-	-	4.6 x 2.6 x 1.6mm	1.6mm	30 V	+85 °C	-	-40 °C
STMicroelectronics LD1117S50CTR, 1 Low Dropout Voltage, Voltage Regulator 1.3A, 5 V 3+Tab-Pin, SOT-223 RS 제품 번호: 165-7749 제조사 부품 번호: LD1117S50CTR Datasheets: ₩259.44 개당가격(2500개가 1릴안에)	STMicroelectronics	-	-	1.3A	Low Dropout Voltage	1	5 V	10 mV	±1%	15 mV	Surface Mount	Positive	SOT-223	5mA	3+Tab	-	Fixed	-	-	-	6.5 x 3.5 x 1.8mm	1.8mm	15 V	+150 °C	-	-40 °C
ROHM BA08CC0T, 1 Low Dropout Voltage, Voltage Regulator 1A, 8 V 3-Pin, TO-220FP RS 제품 번호: 167-7431 제조사 부품 번호: BA08CC0T Datasheets: ₩3,179.08 개당가격(10개가 1팩안에)	ROHM	-	-	1A	Low Dropout Voltage	1	8 V	100 mV	±1%	150 mV	Through Hole	Positive	TO-220FP	-	3	-	Fixed	-	-	-	10 x 4.5 x 17mm	17mm	25 V	+125 °C	4 V	-40 °C
Nisshinbo Micro Devices NJM12856U2-33-TE1, 1 Low Dropout Voltage, LOD Voltage Regulator 1A, 3.3 V RS 제품 번호: 244-4478 제조사 부품 번호: NJM12856U2-33-TE1 Datasheets: ₩612.88 개당가격(1000개가 1릴안에)	Nisshinbo Micro Devices	-	Low Dropout	1A	Low Dropout Voltage	1	3.3 V	0.15 %/V	±1%	3 %/A	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Infineon TLE4294GV50HTSA1, 1 Low Dropout Voltage, Voltage Regulator 30mA, 5 V 4+Tab-Pin, SCT-595 RS 제품 번호: 110-7132 제조사 부품 번호: TLE4294GV50HTSA1 Datasheets: ₩701.24 개당가격(15개가 1팩안에)	Infineon	-	-	30mA	Low Dropout Voltage	1	5 V	30 mV	4%	30 mV	Surface Mount	Positive	SCT-595	-	4+Tab	-	Fixed	-	-	-	2.9 x 1.6 x 1mm	1mm	45 V	+150 °C	5.5 V	-40 °C
STMicroelectronics L7805CV-DG, 1 Linear Voltage, Voltage Regulator 1.5A, 5 V 3-Pin, TO-220 RS 제품 번호: 793-1346 제조사 부품 번호: L7805CV-DG Datasheets: ₩994.52 개당가격(10개가 1팩안에)	STMicroelectronics	-	-	1.5A	Linear Voltage	1	5 V	50 mV	-	100 mV	Through Hole	-	TO-220	6mA	3	-	Fixed	-	-	-	10.4 x 4.6 x 15.75mm	15.75mm	35 V	+125 °C	-	0 °C
Texas Instruments LM338T/NOPB, 1 Linear Voltage, Voltage Regulator 5A, 1.2 → 32 V 3-Pin, TO-220 RS 제품 번호: 460-900 제조사 부품 번호: LM338T/NOPB Datasheets: ₩2,583.12 개당가격(5개가 1팩안에)	Texas Instruments	-	-	5A	Linear Voltage	1	1.2 → 32 V	0.03 %/V	-	0.5 %	Through Hole	Positive	TO-220	-	3	1.29V	Adjustable	25W	-	-	10.16 x 4.7 x 8.89mm	8.89mm	40 V	+125 °C	4.2 V	0 °C
onsemi NCV59745AMW180TAG, 1 Linear Voltage, Voltage Regulator 3A, 3.6 V 20-Pin, QFNW20 RS 제품 번호: 202-7336 제조사 부품 번호: NCV59745AMW180TAG Datasheets: ₩1,770.96 개당가격(3000개가 1릴안에)	onsemi	-	-	3A	Linear Voltage	1	3.6 V	-	±1%	-	Surface Mount	Positive	QFNW20	-	20	-	Adjustable	-	-	-	-	-	-	-	-	-