TL431BQLPRE3

Noise - 0.1Hz to 10Hz:	--
Base Part Number:	TL431B
Supplier Device Package:	TO-92-3
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TA)
Current - Cathode:	700µA
Current - Supply:	--
Voltage - Input:	--
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	--
Tolerance:	±0.5%
Current - Output:	100mA
Voltage - Output (Max):	36V
Voltage - Output (Min/Fixed):	2.495V
Output Type:	Adjustable
Reference Type:	Shunt
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TL431BQLPRE3 application field and working principle

PMIC (Power Management Integrated Circuits) is a type of electronic components which controls power supply and power switch in the electronic devices. The Voltage Reference series within PMIC includes a wide range of products, and TL431BQLPRE3 is one of them. TL431BQLPRE3 features with comprehensive protection, low total output harmonic and high precision setting, making it a popular one among many applications.

Application field of TL431BQLPRE3

TL431BQLPRE3 is the voltage reference that designed for isolated transformer power supply controller chip, high current, to provide a highly accurate output voltage reference system. It has wide application scope in many fields, including medical equipment, industrial equipment, communication equipment and instrumentation.Medical equipment: NTL431BQLPRE3 is used in multi-function anesthesia machine monitoring system, monitor patient oxygen saturation, heart rate and other vital signs, so as to adjust the amount of anesthetic gas and blood pressure automatically.Industrial equipment: Equipped with TL431BQLPRE3, the three-phase bridge inverter is used to control the armature rotation speed and torque of the DC motor in the process of industrial equipment, meanwhile, it can protect the device when overload or phase loss.Communication equipment: It is used in the power amplifier system of communication equipment, provides a stable and reliable working condition and power supply with high precision.Instrumentation: TL431BQLPRE3 is also used in the control board of the electronic instrumentation, such as test instrumentation, current regulator, protection board and etc.

Working principle of TL431BQLPRE3

TL431BQLPRE3is an adjustable voltage regulator integrated circuit composed of differential amplifier, error amplifier, and supervisory circuit. The differential amplifier is connected in series between IN+ and IN- pins, and its output is connected to the error amplifier input pin. There are two references pins, one is REF(+), the other is REF(-). The REF(+)pin provides negative feedback voltage and REF(-) provides a reference voltage when working. The error amplifier output is connected to the supervisory circuit, in order to produce a identical output voltage as that of the reference voltage, like the feedback loop of a power supply in high power switch mode. The output voltage can be adjusted by changing the resistive divider in the circuit, which is connected to the REF pin and the ERROR amplifier pins.The working principle of TL431BQLPRE3 is quite simple and efficient. It just needs a simple circuit arrangement and only a few external components, allowing small size packaging as well.TL431BQLPRE3 is not only easy to use, but also with short start-up time, low voltage drop and high power performance.

Conclusion

TL431BQLPRE3 is a kind of Voltage Reference series in PMIC, and can be widely used in medical equipment, industrial equipment, communication equipment and instrumentation. It has many advantages, such as simple operation, high power performance, and low total harmonic distortion, which making it become a popular choice. With its features, TL431BQLPRE3 is expected to be widely used in many applications and continue to gain more popularity.

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