LM431BIM3

Name: LM431BIM3
Brand: Texas Instruments
Availability: InStock
Rating: 4.5 (10 reviews)
Author: Lisleapex

Adjustable Precision Zener Shunt Regulator

6,655 Effective Inventory

LM431BIM3

Effective Inventory6,655

Adjustable Precision Zener Shunt Regulator

Manufacturer Part # : LM431BIM3
Package/Case: SOT23-3
Part Status : Active
Brand: Texas Instruments
Product Categories : Voltage Reference
Series : LM431

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LM431BIM3 DataSheet

Pricing (USD)

Quantity	Unit Price	Ext. Price
1	$0.312	$0.31
200	$0.121	$24.20
500	$0.117	$58.50
1000	$0.115	$115.00

These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.

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LM431BIM3 Details

The LM431BIM3 is an adjustable voltage reference from Texas Instruments, designed for precision voltage references, adjustable regulators, and voltage-controlled oscillators in various applications such as power supplies, battery chargers, and audio circuits. This device features a programmable output voltage, fast turnon response, low-output noise, and low-dynamic output impedance, making it suitable for compact circuit designs.

Key Features

Average Temperature Coefficient 50 ppm/°C: Provides high accuracy and stability over a wide temperature range.
Temperature Compensated for Operation Over the Full Temperature Range: Ensures reliable operation from -40°C to +125°C.
Programmable Output Voltage: Allows for customization of the output voltage to suit specific application requirements.
Fast Turnon Response: Enables quick response times and stable operation in dynamic applications.
Low-Output Noise: Minimizes noise and ensures clean output signals.
Low-Dynamic Output Impedance: Provides a low impedance output, suitable for driving loads with varying impedances.

Applications

Precision Voltage References: Suitable for applications requiring high accuracy and stability in voltage references.
Adjustable Regulators: Enables customization of output voltages to suit specific application requirements.
Voltage-Controlled Oscillators: Provides a stable and accurate reference voltage for oscillator circuits.

Where to Use

The LM431BIM3 is suitable for use in various applications, including power supplies, battery chargers, audio circuits, and other systems requiring precision voltage references or adjustable regulators.

How to Use

To use the LM431BIM3, connect the VCC pin to a stable voltage source, the GND pin to ground, and the OUT pin to the load or circuit requiring the reference voltage. Adjust the output voltage by applying a control signal to the device's internal feedback loop.

(Tip: For detailed usage instructions and application notes, refer to the datasheet.)

Equivalents

LM334: A similar adjustable voltage reference from Texas Instruments offering comparable features and performance.

Complementary

The LM431BIM3 can be complemented by other devices in the LM series, such as the LM337 or LM339, which offer additional features and functionality for specific application requirements.

(Tip: When selecting complementary devices, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.)

Frequently Asked Questions

Q: What is the typical accuracy of the LM431BIM3's output voltage?

A: The LM431BIM3 provides a typical accuracy of ±1% for its output voltage, with an average temperature coefficient of 50 ppm/°C.

Q: Can the LM431BIM3 be used in automotive applications?

A: Yes, the LM431BIM3 is suitable for use in automotive applications, providing a reliable and accurate reference voltage in demanding environments.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

VO (V)	2.5	Initial accuracy (max) (%)	0.5, 1, 2
VO adj (min) (V)	2.5	VO adj (max) (V)	36
Iz for regulation (min) (µA)	400	Reference voltage (V)	adjustable
Rating	Catalog	Temp coeff (max) (ppm/°C)	97
Operating temperature range (°C)	-40 to 85, 0 to 70	Iout/Iz (max) (mA)	100

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification LM431BIM3 PDF Download

FAQs

What is LM431BIM3?

The LM431BIM3 is a programmable precision shunt regulator designed by Texas Instruments. It is commonly used as a voltage reference or adjustable precision voltage regulator in various electronic circuits.

How Does LM431BIM3 Work?

The LM431BIM3 operates by comparing the voltage at its adjustable input pin with a precision internal reference voltage. Based on this comparison, the device adjusts its output voltage to maintain a stable voltage at the reference pin. It can be programmed to regulate output voltages by external resistors, providing flexibility in voltage regulation applications.

How Many Pins does LM431BIM3 have and What are the Functions of the Pinout Configuration?

The LM431BIM3 is housed in a 3-pin SOT-23 package. The pinout configuration includes:

Ref: Reference pin.
Anode: Adjustable input pin.
Cathode: Output pin.

What are the Pros and Cons of LM431BIM3?

Pros:

Precision Regulation: Provides accurate voltage regulation for critical applications.
Programmable Output: The output voltage can be adjusted using external resistors.
Low Cost: Offers a cost-effective solution for voltage reference and regulation.
Simple Design: Easy to use and integrate into circuits with minimal external components.

Cons:

Power Dissipation: May require heat sinking for high power applications.
Noisy: Can exhibit noise in certain applications, requiring additional filtering.

Are There Any Equivalents/Alternatives to LM431BIM3 for Recommendation?

Similar alternatives to the LM431BIM3 include the TL431 from Texas Instruments and the LM4040 from Analog Devices.
Equivalents to the LM431BIM3 include the LM385 from Texas Instruments and the REF02 from Analog Devices.