PMIC - Voltage Regulators - Linear

Category Introduction

Linear voltage regulators are used to provide a stable output voltage that is nominally invariant with respect to changes in load current, input voltage, or environmental factors. Their operating principle requires that the input voltage be maintained above the desired output voltage by some minimum amount, and function on the basis of converting whatever excess voltage is present at the input to heat. While this renders them less efficient than switch-mode voltage regulators for most applications, they are often better suited for applications with high sensitivity to noise.

Product List

67222 Items

Mfr Part #	Quantity Available	UnitPrice	Series	Packaging	Product Status	Output Configuration	Output Type	Number of Regulators	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Voltage - Output (Max)	Voltage Dropout (Max)	Current - Output	Current - Quiescent (Iq)	Current - Supply (Max)	PSRR	Control Features	Protection Features	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
TCR2EF33,LM(CT IC REG LINEAR 3.3V 200MA SMV Toshiba Semiconductor and Storage	1,677	$0.33	TCR2EF	Tape & Reel (TR)	Active	Positive	Fixed	1	5.5V	3.3V	-	0.2V @ 150mA	200mA	60 µA	-	73dB (1kHz)	Enable	Over Current	-40°C ~ 85°C	Surface Mount	SC-74A, SOT-753	SMV
AP2120N-3.3TRG1 IC REG LINEAR 3.3V 150MA SOT23 Diodes Incorporated	2,431	$0.39		Tape & Reel (TR)	Active	Positive	Fixed	1	6V	3.3V	-	0.5V @ 150mA	150mA	50 µA	-	65dB (1kHz)	-	Over Current	-40°C ~ 85°C	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
AP2127K-1.8TRG1 IC REG LINEAR 1.8V 300MA SOT23-5 Diodes Incorporated	870	$0.38		Tape & Reel (TR)	Active	Positive	Fixed	1	6V	1.8V	-	0.7V @ 300mA	300mA	90 µA	-	68dB ~ 54dB (100Hz ~ 10kHz)	-	Over Current, Over Temperature	-40°C ~ 85°C	Surface Mount	SC-74A, SOT-753	SOT-23-5
NCP114AMX330TCG IC REG LINEAR 3.3V 300MA 4UDFN onsemi	1,440	$0.47		Tape & Reel (TR)	Active	Positive	Fixed	1	5.5V	3.3V	-	0.2V @ 300mA	300mA	95 µA	-	75dB (1kHz)	Enable	Over Current, Over Temperature	-40°C ~ 85°C (TA)	Surface Mount	4-UDFN Exposed Pad	4-UDFN (1.0x1.0)
AP7366-W5-7 IC REG LIN POS ADJ 600MA SOT25 Diodes Incorporated	168	$0.42		Tape & Reel (TR)	Active	Positive	Adjustable	1	6V	0.8V	5V	-	600mA	80 µA	-	75dB ~ 55dB (1kHz ~ 10kHz)	Current Limit, Enable	Over Current, Short Circuit	-40°C ~ 85°C (TA)	Surface Mount	SC-74A, SOT-753	SOT-25
AS78L05RTR-E1 IC REG LINEAR 5V 100MA SOT89-3 Diodes Incorporated	275	$0.40		Tape & Reel (TR)	Active	Positive	Fixed	1	30V	5V	-	1.8V @ 100mA (Typ)	100mA	5.5 mA	-	62dB (120Hz)	-	Over Temperature, Short Circuit	-40°C ~ 125°C	Surface Mount	TO-243AA	SOT-89-3
AP7340-33FS4-7 IC REG LINEAR 3.3V 150MA 4DFN Diodes Incorporated	1,296	$0.38		Tape & Reel (TR)	Active	Positive	Fixed	1	5.25V	3.3V	-	0.27V @ 150mA	150mA	50 µA	100 µA	75dB (1kHz)	Enable	Over Current	-40°C ~ 85°C	Surface Mount	4-XDFN Exposed Pad	X2-DFN1010-4
AZ1117CR-3.3TRG1 IC REG LINEAR 3.3V 1A SOT89 Diodes Incorporated	1,317	$0.43	AZ1117C	Tape & Reel (TR)	Active	Positive	Fixed	1	15V	3.3V	-	-	1A	6 mA	-	70dB (120Hz)	-	Thermal Shutdown	-20°C ~ 125°C (TJ)	Surface Mount	TO-243AA	SOT-89-3
MIC5365-3.3YC5-TR IC REG LINEAR 3.3V 150MA SC70-5 Microchip Technology	2,543	$0.18		Tape & Reel (TR)	Active	Positive	Fixed	1	5.5V	3.3V	-	0.31V @ 150mA	150mA	39 µA	-	80dB ~ 65dB (1kHz ~ 10kHz)	Enable	Over Current, Over Temperature	-40°C ~ 125°C	Surface Mount	5-TSSOP, SC-70-5, SOT-353	SC-70-5
AP7370-33Y-13 IC REG LINEAR 3.3V 300MA SOT89-3 Diodes Incorporated	1,068	$0.44		Tape & Reel (TR)	Active	Positive	Fixed	1	18V	3.3V	-	0.6V @ 100mA	300mA	2.5 µA	300 µA	-	-	Over Current, Over Temperature, Reverse Current, Short Circuit	-40°C ~ 125°C (TJ)	Surface Mount	TO-243AA	SOT-89-3
L78L05CD13TR IC REG LINEAR 5V 100MA 8SO STMicroelectronics	8	$0.48		Tape & Reel (TR)	Active	Positive	Fixed	1	30V	5V	-	-	100mA	5.5 mA	6 mA	49dB (120Hz)	-	Over Current, Over Temperature, Short Circuit	0°C ~ 125°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
RT9193-33GB IC REG LINEAR 3.3V 300MA SOT23-5 Richtek USA Inc.	1,481	$0.49		Tape & Reel (TR)	Active	Positive	Fixed	1	5.5V	3.3V	-	0.3V @ 300mA	300mA	130 µA	-	70dB ~ 50dB (100Hz ~ 10kHz)	Enable	Over Current, Over Temperature	-40°C ~ 125°C	Surface Mount	SC-74A, SOT-753	SOT-23-5
AP2204K-ADJTRG1 IC REG LIN POS ADJ 150MA SOT23-5 Diodes Incorporated	56	$0.53		Tape & Reel (TR)	Not For New Designs	Positive	Adjustable	1	24V	1.24V	22V	0.5V @ 150mA	150mA	50 µA	2.5 mA	60dB (100Hz ~ 1kHz)	Enable	Over Current, Over Temperature	-40°C ~ 85°C	Surface Mount	SC-74A, SOT-753	SOT-23-5
AP7361-33E-13 IC REG LINEAR 3.3V 1A SOT223 Diodes Incorporated	1,647	$0.52		Tape & Reel (TR)	Active	Positive	Fixed	1	6V	3.3V	-	0.7V @ 1A	1A	90 µA	-	65dB ~ 45dB (1kHz ~ 10kHz)	-	Over Current, Over Temperature, Short Circuit	-40°C ~ 85°C	Surface Mount	TO-261-4, TO-261AA	SOT-223-3
ZXTR2105F-7 IC REG LINEAR 5V 89MA SOT23 Diodes Incorporated	1,355	$0.45	Automotive, AEC-Q101	Tape & Reel (TR)	Active	Positive	Fixed	1	60V	5V	-	-	89mA	800 µA	6.7 mA	46dB (100Hz)	-	-	-65°C ~ 150°C	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
UA78L05AIPK IC REG LINEAR 5V 100MA SOT89-3 Texas Instruments	1,939	$0.42		Tape & Reel (TR)	Active	Positive	Fixed	1	20V	5V	-	1.7V @ 40mA	100mA	-	-	49dB (120Hz)	-	Over Current, Over Temperature, Reverse Polarity, Short Circuit	-40°C ~ 125°C	Surface Mount	TO-243AA	SOT-89-3
RP130K501D-TR IC REG LINEAR 5V 150MA DFN1010-4 Nisshinbo Micro Devices Inc.	406	$0.54	RP130x	Tape & Reel (TR)	Active	Positive	Fixed	1	6.5V	5V	-	0.31V @ 150mA	150mA	58 µA	-	80dB (1kHz)	Enable	Over Current	-40°C ~ 105°C (TA)	Surface Mount	4-UDFN Exposed Pad	DFN(PLP)1010-4B
AP7354-33W5-7 IC REG LINEAR 3.3V 150MA SOT25 Diodes Incorporated	1,545	$0.52		Tape & Reel (TR)	Active	Positive	Fixed	1	5.5V	3.3V	-	0.35V @ 150mA	150mA	0.6 µA	-	-	Enable	Over Current	-40°C ~ 85°C (TA)	Surface Mount	SC-74A, SOT-753	SOT-25
LP2951CDR2G IC REG LIN POS ADJ 100MA 8SOIC onsemi	382	$0.56		Tape & Reel (TR)	Active	Positive	Adjustable (Fixed)	1	30V	1.235V (5V)	30V	0.45V @ 100mA	100mA	120 µA	12 mA	-	-	Over Current, Over Temperature	-40°C ~ 125°C	Surface Mount	8-SOIC (0.154", 3.90mm Width)	8-SOIC
TLV73312PQDBVRQ1 IC REG LINEAR 1.2V 300MA SOT23-5 Texas Instruments	1,535	$0.53	Automotive, AEC-Q100	Tape & Reel (TR)	Active	Positive	Fixed	1	5.5V	1.2V	-	0.45V @ 300mA	300mA	78 µA	-	-	Enable	Over Current, Over Temperature, UVLO	-40°C ~ 125°C (TA)	Surface Mount	SC-74A, SOT-753	SOT-23-5

About Linear Voltage Regulators

What are Linear Voltage Regulators?

Linear Voltage Regulators

Linear Voltage Regulators are essential components in the realm of Power Management Integrated Circuits (PMICs), designed to maintain a constant output voltage level despite variations in input voltage or load conditions. They function by dissipating excess voltage as heat, thus ensuring that the output voltage remains stable and within the desired range. The basic operating principle involves a series pass element, typically a transistor, which adjusts its resistance to maintain a steady output voltage. This simplicity in design makes linear regulators a popular choice for applications requiring low noise and minimal electromagnetic interference.

Types of Linear Voltage Regulators

Fixed Voltage Regulators

Fixed voltage regulators provide a constant output voltage that is predetermined by the manufacturer. They are widely used in applications where a specific voltage level is required, such as powering microcontrollers or other digital circuits. Their simplicity and ease of use make them ideal for straightforward power supply designs.

Adjustable Voltage Regulators

Adjustable voltage regulators offer flexibility by allowing the user to set the desired output voltage level using external resistors. This adaptability makes them suitable for applications requiring a range of output voltages, such as variable power supplies or battery chargers. They provide a balance between precision and versatility.

Low Dropout (LDO) Regulators

Low Dropout Regulators are designed to operate efficiently with a minimal difference between input and output voltage, known as the dropout voltage. This characteristic makes LDOs particularly useful in battery-powered devices where maximizing energy efficiency is crucial. They are favored in portable electronics and other applications where power conservation is a priority.

How to choose Linear Voltage Regulators?

When selecting a linear voltage regulator, several key parameters should be considered:

Output Voltage: Determine the required output voltage for your application, whether fixed or adjustable.
Dropout Voltage: Consider the minimum input-to-output voltage differential needed for proper operation, especially in battery-powered applications.
Load Current: Ensure the regulator can supply the necessary current to your load without overheating.
Efficiency: Evaluate the power dissipation and thermal performance, particularly in high-current applications.
Package Type: Choose a package that suits your design's space constraints and thermal management needs.

To assess product quality and reliability, consider the manufacturer's reputation, available datasheets, and customer reviews. Environmental factors such as operating temperature range and installation requirements, including heat sinking and PCB layout, should also be taken into account to ensure optimal performance and longevity.

Applications of Linear Voltage Regulators

Consumer Electronics

In consumer electronics, linear voltage regulators are used to power devices such as smartphones, tablets, and laptops. They ensure stable voltage levels for sensitive components, reducing noise and enhancing performance in audio and video applications.

Automotive Industry

The automotive sector relies on linear voltage regulators to provide stable power to various electronic systems, including infotainment, navigation, and engine control units. Their robustness and reliability are crucial in the demanding automotive environment.

Telecommunications

Telecommunications equipment, such as routers and base stations, utilize linear voltage regulators to maintain consistent power levels, ensuring reliable signal processing and communication. Their low noise characteristics are vital for maintaining signal integrity.

Industrial Automation

In industrial automation, linear voltage regulators are employed to power sensors, controllers, and actuators. They provide the necessary voltage stability for precise control and monitoring in automated systems, contributing to operational efficiency and safety.

Medical Devices

Medical devices, including diagnostic equipment and patient monitoring systems, depend on linear voltage regulators for their low noise and high precision. These regulators help maintain the accuracy and reliability of critical medical measurements and functions.