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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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In Stock STMicroelectronics SG3525AP, 2-Channel Switching Regulators, Regulator, 500 mA, 5.2V, DIP-16 16-Pin RS Stock No. 839-142 Mfr. Part No. SG3525AP Subtotal (1 unit) £2.49(exc. VAT) £2.49/unit Quantity	STMicroelectronics	Regulator	-	Switching Regulators	-	DIP-16	2	5.2V	20 mV	-	-	50 mV	Through Hole	-	-	-	500mA	16	-	Transistor (Sink)	-	-	-	-	-	8.4mm	20mm	SG3525A	-	8.5mm	35V	70°C	8V	0°C
In Stock United Automation CSR1004A Linear, Voltage Regulator, 10 A, 230V 3-Pin RS Stock No. 307-957 Mfr. Part No. CSR1004A Subtotal (1 unit) £24.06(exc. VAT) £24.06/unit Quantity	United Automation	Voltage Regulator	-	Linear	-	-	-	-	-	-	-	-	Through Hole	-	-	-	10A	3	-	Adjustable	-	-	-	-	-	29.3mm	17.5mm	CSR1	No	-	230V	70°C	-	0°C
In Stock Nisshinbo Micro Devices NJW4107U3-05B-TE1, 1-Channel Low Dropout Voltage, LOD Voltage Regulator, 300 mA, 5V 5-Pin RS Stock No. 244-4562 Mfr. Part No. NJW4107U3-05B-TE1 Subtotal (1 pack of 5 units) £10.70(exc. VAT) £2.14/unit Quantity	Nisshinbo Micro Devices	LOD Voltage Regulator	-	Low Dropout Voltage	-	-	-	-	34 mV	-	-	22.5 %/mV	Surface	-	-	135μA	300mA	5	-	-	-	-	-	-	-	-	-	NJW4107	RoHS	-	40V	125°C	4V	-40°C
In Stock MPS MPM3830GQV-P, Converter 6V QFN-20 20-Pin RS Stock No. 337-867P Mfr. Part No. MPM3830GQV-P Subtotal 5 units (supplied on a continuous strip) £13.10(exc. VAT) £2.62/unit Quantity	MPS	Converter	-	-	-	QFN-20	-	-	-	-	-	-	Surface	-	-	-	-	20	-	-	-	-	-	-	-	-	-	-	RoHS	-	6V	125°C	2.7V	-
In Stock STMicroelectronics, 5-Channel Linear, Voltage Regulator, 1 A, 12V, TO-220 3-Pin RS Stock No. 298-8586 Mfr. Part No. L7812ACV Subtotal (1 unit) £0.53(exc. VAT) £0.53/unit Quantity	STMicroelectronics	Voltage Regulator	-	Linear	-	TO-220	-	-	120 mV	-	-	100 mV	Through Hole	-	Positive	4.4mA	1A	3	-	Fixed	-	-	No	-	-	9.15mm	10.4mm	L78xx	RoHS	-	35V	150°C	-	0°C
In Stock Wurth Elektronik 173950375, 1-Channel Step-Down, Power Module, 1.2 A, 3.3V 350 kHz, SIP 3-Pin RS Stock No. 762-612 Mfr. Part No. 173950375 Subtotal (1 unit) £6.92(exc. VAT) £6.92/unit Quantity	Wurth Elektronik	Power Module	-	Step-Down	-	SIP	1	3.3V	0.015	350kHz	-	0.2	Through Hole	-	-	-	1.2A	3	-	DC	-	-	-	-	-	17.5mm	11.5mm	FDSM	RoHS	9mm	74.5V	85°C	9V	-40°C
In Stock Nisshinbo Micro Devices NJM78M18DL1A-TE1, 5-Channel Voltage, Voltage Regulator, 500 mA, 18V RS Stock No. 248-4287 Mfr. Part No. NJM78M18DL1A-TE1 Subtotal (1 pack of 5 units) £7.30(exc. VAT) £1.46/unit Quantity	Nisshinbo Micro Devices	Voltage Regulator	-	Voltage	-	-	-	-	10 mV	-	-	15 mV	-	-	Positive	6mA	500mA	-	-	Voltage	-	-	-	-	-	-	-	NJM78M00	No	-	40V	150°C	35V	-40°C
Temporarily out of stock STMicroelectronics SG3525AN, 2-Channel Switching Regulators, Regulator, 500 mA, 5.2V, DIP-16 16-Pin RS Stock No. 839-141 Mfr. Part No. SG3525AN Subtotal (1 unit) £1.81(exc. VAT) £1.81/unit Quantity	STMicroelectronics	Regulator	-	Switching Regulators	-	DIP-16	2	5.2V	20 mV	-	-	50 mV	Through Hole	-	-	-	500mA	16	-	Transistor (Sink)	-	-	-	-	-	8.4mm	20mm	SG3525A	-	8.5mm	35V	70°C	8V	0°C
In Stock STMicroelectronics, 5-Channel Linear, Voltage Regulator, 2.2 A, 37V, TO-220 3-Pin RS Stock No. 860-7286 Mfr. Part No. LM317BT Subtotal (1 pack of 10 units) £2.86(exc. VAT) £0.286/unit Quantity	STMicroelectronics	Voltage Regulator	-	Linear	-	TO-220	-	-	0.07 %/V	-	-	70 mV	Through Hole	-	Positive	-	2.2A	3	-	Adjustable	-	-	No	-	-	15.75mm	10.4mm	LM317	RoHS	-	40V	125°C	-	-40°C
In Stock Texas Instruments LM2576HVT-ADJ/LF03, 5-Channel Buck, Boost, Buck Converter, 3 A, 57V 52 kHz, TO-220 5-Pin RS Stock No. 796-8026 Mfr. Part No. LM2576HVT-ADJ/LF03 Subtotal (1 unit) £5.07(exc. VAT) £5.07/unit Quantity	Texas Instruments	Buck Converter	-	Buck, Boost	-	TO-220	5	57V	-	52kHz	-	-	Through Hole	-	-	5mA	3A	5	-	Adjustable	-	-	Yes	-	-	8.64mm	10.16mm	LM2576	RoHS	4.57mm	60V	125°C	40V	-40°C
In Stock MPS MPM3830GQV-P, Converter 6V QFN-20 20-Pin RS Stock No. 337-867 Mfr. Part No. MPM3830GQV-P Subtotal (1 tape of 5 units) £13.10(exc. VAT) £2.62/unit Quantity	MPS	Converter	-	-	-	QFN-20	-	-	-	-	-	-	Surface	-	-	-	-	20	-	-	-	-	-	-	-	-	-	-	RoHS	-	6V	125°C	2.7V	-
In Stock MPS MPM3620GQV-P, Converter 24V QFN-20 20-Pin RS Stock No. 337-828P Mfr. Part No. MPM3620GQV-P Subtotal 5 units (supplied on a continuous strip) £11.35(exc. VAT) £2.27/unit Quantity	MPS	Converter	-	-	-	QFN-20	-	-	-	-	-	-	Surface	-	-	-	-	20	-	-	-	-	-	-	-	-	-	-	RoHS	-	24V	125°C	4.5V	-
Last RS stock Renesas Electronics ISL97516IUZ-TK, 1-Channel Boost, Voltage Regulator, 1.7 A, 5V 1.5 MHz, MSOP-8 8-Pin RS Stock No. 263-9020P Mfr. Part No. ISL97516IUZ-TK Subtotal 2 units (supplied on a continuous strip) £4.00(exc. VAT) £2.00/unit Quantity	Renesas Electronics	Voltage Regulator	-	Boost	-	MSOP-8	-	-	0.2 %	1.5MHz	-	0.3 %	-	-	-	3mA	1.7A	8	-	-	-	-	Yes	-	-	-	-	ISL97516	IPC/JEDEC J STD-020, RoHS	-	5.5V	85°C	2.3V	-40°C
In Stock Renesas Electronics ISL80136IBEAJZ, 1-Channel Linear Voltage, Voltage Regulator, 50 mA, 12V, EPSOIC 8-Pin RS Stock No. 262-7264 Mfr. Part No. ISL80136IBEAJZ Subtotal (1 pack of 5 units) £8.91(exc. VAT) £1.782/unit Quantity	Renesas Electronics	Voltage Regulator	-	Linear Voltage	-	EPSOIC	-	-	0.04 %	-	-	0.25 %	-	-	-	18μA	50mA	8	-	Adjustable	-	-	Yes	-	-	-	-	ISL80136	IPC/JEDEC J STD-020, RoHS	-	40V	125°C	6V	-40°C
In Stock Texas Instruments LM2940T-10.0/NOPB, Voltage Regulator 26V TO-220 3-Pin RS Stock No. 535-9010 Mfr. Part No. LM2940T-10.0/NOPB Subtotal (1 pack of 5 units) £7.35(exc. VAT) £1.47/unit Quantity	Texas Instruments	Voltage Regulator	-	-	-	TO-220	-	10V	-	-	-	-	Through Hole	-	Positive	10mA	-	3	-	-	-	-	-	-	-	8.89mm	10.16mm	LM2940-N	No	4.7mm	26V	125°C	11.5V	-
In Stock STMicroelectronics L78L12ACZ, Voltage Regulator 35V TO-92 3-Pin RS Stock No. 189-1302 Mfr. Part No. L78L12ACZ Subtotal (1 unit) £0.19(exc. VAT) £0.19/unit Quantity	STMicroelectronics	Voltage Regulator	-	-	-	TO-92	-	-	-	-	-	-	Through Hole	-	Positive	6.5mA	-	3	-	-	-	-	-	-	-	4.95mm	4.95mm	L78Lxx	No	-	35V	150°C	14V	-
In Stock United Automation CSR2-15E Linear Voltage, Voltage Regulator, 15 A, 230V 3-Pin RS Stock No. 655-644 Mfr. Part No. CSR2-15E Subtotal (1 unit) £49.99(exc. VAT) £49.99/unit Quantity	United Automation	Voltage Regulator	-	Linear Voltage	-	-	-	-	-	-	-	-	Panel	-	-	-	15A	3	-	Adjustable	-	-	-	-	-	42.5mm	43mm	CSR2	No	-	230V	75°C	-	0°C
Last RS stock Nisshinbo Micro Devices, 5-Channel Low Dropout Voltage, Voltage Regulator, 300 mA, 3.3V, SOT-23-5 5-Pin RS Stock No. 244-8597P Mfr. Part No. NJM2882F33-TE1 Subtotal 5 units (supplied on a continuous strip) £1.18(exc. VAT) £0.236/unit Quantity	Nisshinbo Micro Devices	Voltage Regulator	-	Low Dropout Voltage	-	SOT-23-5	-	-	0.1 %/V	-	-	30 %/A	-	-	-	180A	300mA	5	-	-	200mW	-	-	-	-	-	-	NJM2882F33	No	-	14V	85°C	2.3V	-40°C
In Stock Nisshinbo Micro Devices, 5-Channel Low Dropout Voltage, Voltage Regulator, 180 mA, 10V, SOT-89 6-Pin RS Stock No. 313-8417P Mfr. Part No. NJM2370U1-10 Subtotal 5 units (supplied on a continuous strip) £2.30(exc. VAT) £0.46/unit Quantity	Nisshinbo Micro Devices	Voltage Regulator	-	Low Dropout Voltage	-	SOT-89	-	-	0.12 %/V	-	-	0.03 %/mA	Surface	-	Positive	0.18mA	180mA	6	-	Fixed	0.35W	-	No	-	-	1.5mm	4.5mm	NJM2370	RoHS	-	20V	85°C	-	-40°C
In Stock ROHM BD33FC0JEFJ-E2, 1-Channel Low Dropout (Ldo) Linear Regulator, Regulator, 1 A, 3.3V, HTSOP-J8 8-Pin RS Stock No. 780-401 Mfr. Part No. BD33FC0JEFJ-E2 Subtotal (1 tape of 10 units) £10.69(exc. VAT) £1.069/unit Quantity	ROHM	Regulator	-	Low Dropout (Ldo) Linear Regulator	-	HTSOP-J8	1	3.3V	20 to 80 mV	-	-	0.010 to 0.020 V	Surface	-	-	-	1A	8	-	-	-	-	No	-	-	1mm	6mm	BDxxFC0 Series	RoHS Compliant	4.9mm	35V	85°C	4V	-25°C