PMIC - Voltage Reference

Category Introduction

Products in the voltage reference family are used to derive an electrical potential having a stable, well-established value from a source of more uncertain character, for use as a standard of comparison in measurement, control, and similar applications. While their functional behavior may be similar to that of linear voltage regulators used for purposes of bulk power regulation, voltage reference devices are not adapted for use as such; their performance as standards of comparison has a generally inverse relationship with increasing output current capacity or actual current drawn by a load.

Product List

8380 Items

Mfr Part #	Quantity Available	UnitPrice	Packaging	Product Status	Reference Type	Output Type	Voltage - Output (Min/Fixed)	Voltage - Output (Max)	Current - Output	Tolerance	Temperature Coefficient	Noise - 0.1Hz to 10Hz	Noise - 10Hz to 10kHz	Voltage - Input	Current - Supply	Current - Cathode	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
AS431ANTR-G1 IC VREF SHUNT ADJ 0.5% SOT23-3 Diodes Incorporated	1,763	$0.35	Tape & Reel (TR)	Active	Shunt	Adjustable	2.5V	36 V	100 mA	±0.5%	20ppm/°C Typical	-	-	-	-	1 mA	-40°C ~ 125°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
TL432ASA-7 IC VREF SHUNT ADJ 1% SOT23-3 Diodes Incorporated	1,241	$0.50	Tape & Reel (TR)	Active	Shunt	Adjustable	2.495V	36 V	100 mA	±1%	-	-	-	-	-	700 µA	-40°C ~ 125°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
TLVH431LIL3T IC VREF SHUNT ADJ 1.5% SOT23-3 STMicroelectronics	567	$0.52	Tape & Reel (TR)	Active	Shunt	Adjustable	1.24V	18 V	60 mA	±1.5%	100ppm/°C	-	30mVrms	-	-	200 µA	-40°C ~ 125°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
ZR431F01TA IC VREF SHUNT ADJ 1% SOT23 Diodes Incorporated	11	$0.57	Tape & Reel (TR)	Active	Shunt	Adjustable	2.5V	20 V	100 mA	±1%	55ppm/°C	-	-	-	-	50 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM4040C25FTA IC VREF SHUNT 0.5% SOT23 Diodes Incorporated	670	$0.60	Tape & Reel (TR)	Active	Shunt	Fixed	2.5V	-	15 mA	±0.5%	100ppm/°C	-	35µVrms	-	-	68 µA	-40°C ~ 125°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM4041DFTA IC VREF SHUNT 1% SOT23 Diodes Incorporated	1,117	$0.63	Tape & Reel (TR)	Active	Shunt	Fixed	1.225V	-	12 mA	±1%	150ppm/°C	-	20µVrms	-	-	73 µA	-40°C ~ 125°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM4040EIM3X-2.5/NOPB IC VREF SHUNT 2% SOT23-3 Texas Instruments	1,346	$0.50	Tape & Reel (TR)	Active	Shunt	Fixed	2.5V	-	15 mA	±2%	150ppm/°C	-	35µVrms	-	-	70 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM4040EIM3-2.5/NOPB IC VREF SHUNT 2% SOT23-3 Texas Instruments	1,367	$0.50	Tape & Reel (TR)	Active	Shunt	Fixed	2.5V	-	15 mA	±2%	150ppm/°C	-	35µVrms	-	-	70 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
TS2431AILT IC VREF SHUNT ADJ 1% SOT23-3 STMicroelectronics	100	$0.62	Tape & Reel (TR)	Active	Shunt	Adjustable	2.5V	24 V	100 mA	±1%	100ppm/°C	-	-	-	-	1 mA	-40°C ~ 105°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
ZR431LF02TA IC VREF SHUNT ADJ 2.5% SOT23 Diodes Incorporated	1,278	$0.71	Tape & Reel (TR)	Active	Shunt	Adjustable	1.24V	10 V	25 mA	±2.5%	50ppm/°C	-	-	-	-	100 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM4040DIM3-2.5/NOPB IC VREF SHUNT 1% SOT23-3 Texas Instruments	153	$0.88	Tape & Reel (TR)	Active	Shunt	Fixed	2.5V	-	15 mA	±1%	150ppm/°C	-	35µVrms	-	-	70 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM4040DIM3-10.0/NOPB IC VREF SHUNT 1% SOT23-3 Texas Instruments	166	$0.88	Tape & Reel (TR)	Active	Shunt	Fixed	10V	-	15 mA	±1%	150ppm/°C	-	180µVrms	-	-	110 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM4040DIM3-4.1/NOPB IC VREF SHUNT 1% SOT23-3 Texas Instruments	658	$0.82	Tape & Reel (TR)	Active	Shunt	Fixed	4.096V	-	15 mA	±1%	150ppm/°C	-	80µVrms	-	-	78 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM4041DIM3-1.2/NOPB IC VREF SHUNT 1% SOT23-3 Texas Instruments	65	$0.86	Tape & Reel (TR)	Active	Shunt	Fixed	1.225V	-	12 mA	±1%	150ppm/°C	-	20µVrms	-	-	70 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM431BCM3/NOPB IC VREF SHUNT ADJ 1% SOT23-3 Texas Instruments	162	$0.88	Tape & Reel (TR)	Active	Shunt	Adjustable	2.495V	37 V	100 mA	±1%	50ppm/°C Typical	-	-	-	-	1 mA	0°C ~ 70°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM4040DEX3-3.3+T IC VREF SHUNT 1% SC70-3 Analog Devices Inc./Maxim Integrated	252	$0.97	Tape & Reel (TR)	Active	Shunt	Fixed	3.3V	-	15 mA	±1%	150ppm/°C	-	50µVrms	-	-	70 µA	-40°C ~ 125°C (TA)	Surface Mount	SC-70, SOT-323	SC-70-3
ZR40401F50TA IC VREF SHUNT 1% SOT23 Diodes Incorporated	386	$1.05	Tape & Reel (TR)	Active	Shunt	Fixed	5V	-	15 mA	±1%	100ppm/°C	-	105µVrms	-	-	60 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
ZR285F02TA IC VREF SHUNT 2% SOT23 Diodes Incorporated	403	$1.06	Tape & Reel (TR)	Active	Shunt	Fixed	2.5V	-	20 mA	±2%	90ppm/°C	-	60µVrms	-	-	20 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM4040CIM3-2.5/NOPB IC VREF SHUNT 0.5% SOT23-3 Texas Instruments	707	$0.96	Tape & Reel (TR)	Active	Shunt	Fixed	2.5V	-	15 mA	±0.5%	100ppm/°C	-	35µVrms	-	-	65 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3
LM4040CIM3-2.0/NOPB IC VREF SHUNT 0.5% SOT23-3 Texas Instruments	77	$0.95	Tape & Reel (TR)	Active	Shunt	Fixed	2.048V	-	15 mA	±0.5%	100ppm/°C	-	35µVrms	-	-	65 µA	-40°C ~ 85°C (TA)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23-3

About Voltage Reference PMICs

What are Voltage Reference PMICs?

Voltage Reference PMICs

Voltage Reference Power Management Integrated Circuits (PMICs) are specialized components designed to provide a stable and precise voltage output, which is critical for the optimal performance of various electronic systems. These ICs work by maintaining a constant voltage level despite variations in input voltage, temperature, or load conditions. The basic operating principle involves using a bandgap reference or other precision voltage reference techniques to generate a stable output voltage, which is then used to power sensitive components or serve as a reference for other circuits.

Types of Voltage Reference PMICs

1. Series Voltage References

Series voltage references are designed to provide a stable output voltage by regulating the current through a series pass element. They are commonly used in applications where low dropout voltage and high accuracy are required. These references are ideal for battery-powered devices due to their low power consumption.

2. Shunt Voltage References

Shunt voltage references operate by maintaining a constant voltage across a shunt resistor. They are typically used in applications where a simple and cost-effective solution is needed. Shunt references are known for their ease of use and ability to handle a wide range of input voltages.

3. Adjustable Voltage References

Adjustable voltage references allow users to set the desired output voltage through external resistors. This flexibility makes them suitable for applications requiring custom voltage levels. They offer a balance between precision and adaptability, making them versatile for various design needs.

How to choose Voltage Reference PMICs?

When selecting a voltage reference PMIC, consider the following key parameters:

Output Voltage: Ensure the PMIC provides the required voltage level for your application.
Accuracy: Look for high precision to ensure minimal deviation from the desired voltage.
Temperature Coefficient: Choose a PMIC with a low temperature coefficient to maintain stability across temperature variations.
Power Consumption: Opt for low power consumption to enhance efficiency, especially in battery-operated devices.
Package Type: Consider the physical size and compatibility with your design layout.

Evaluate product quality by reviewing supplier datasheets, customer reviews, and reliability tests. Consider environmental factors such as operating temperature range and humidity, and ensure proper installation to prevent thermal or mechanical stress.

Applications of Voltage Reference PMICs

1. Consumer Electronics

In consumer electronics, voltage reference PMICs are used to ensure stable power supply for microprocessors, sensors, and other critical components. They help maintain device performance and prolong battery life in smartphones, tablets, and wearable devices.

2. Automotive Industry

Automotive applications require precise voltage regulation for engine control units, infotainment systems, and safety features. Voltage reference PMICs ensure reliable operation under varying temperature and load conditions, enhancing vehicle performance and safety.

3. Industrial Automation

In industrial settings, voltage reference PMICs are crucial for maintaining accuracy in control systems, sensors, and data acquisition modules. They provide the necessary stability for high-precision manufacturing and process control applications.

4. Telecommunications

Telecommunications infrastructure relies on voltage reference PMICs to stabilize power supplies for base stations, routers, and network equipment. These PMICs ensure uninterrupted communication by preventing voltage fluctuations that could disrupt signal integrity.

5. Medical Devices

Medical devices demand high precision and reliability, making voltage reference PMICs essential for diagnostic equipment, patient monitoring systems, and portable medical devices. They provide the consistent power needed for accurate measurements and patient safety.