Noise - 0.1Hz to 10Hz:	285µVp-p
Base Part Number:	LM4128
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Current - Supply:	100µA
Voltage - Input:	3.4 V ~ 5.5 V
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	75ppm/°C
Tolerance:	±0.2%
Current - Output:	20mA
Voltage - Output (Min/Fixed):	3V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LM4128BMF-3.0 Application Field and Working Principle

The LM4128BMF-3.0 is a 3.0 V regulator specifically designed to provide exceptionally tight reference voltage accuracy, low operating current, and high output current. It combines a voltage regulator and a precision fractional reference unit (FRU) into a complete voltage reference package. The LM4128BMF-3.0 offers an improved drop-out voltage over the traditional regulators and a low noise output voltage.

Applications

LM4128BMF-3.0 can be used in a wide range of applications, such as:

• Analog to Digital Converters (ADCs)
• Digital to Analog Converters (DACs)
• Data and Line Drivers
• Power Supplies
• Test and Instrumentation
• Communication and Networking

The LM4128BMF-3.0 is well suited for use in tightspace, high-speed applications such as laptop computers, AV systems and PC displays. It is able to ensure improved voltage accuracy with minimum power consumption due to its low operating current, high output current and low dropout voltage.

Working Principle

The LM4128BMF-3.0 is a fractional-band gap voltage reference that combines linear precision and CMOS processes to achieve superior low-power and accuracy performance. It is implemented with a lower-power regulator that is connected to a precision-fractional reference unit (FRU): a voltage reference.The FRU uses the band-gap principle to create a stabilized reference voltage. The reference voltage is generated using the difference between the band-gap, which is a temperature-stable voltage level, and the voltage locked in at a certain temperature, known as the emitter-coupled region. A fractional-band gap voltage reference isolates the band-gap region from other components to eliminate errors due to derivation of the output voltage.The voltage reference unit also incorporates a level-shift circuit and amplifier to amplify the band gap voltage and allow its output to range from 2.5 V to 3.3 V. The reference then feeds its output to the regulator, which further stabilizes the output voltage with its built-in feedback circuit.

Conclusion

The LM4128BMF-3.0 is a low noise, low-power voltage regulator designed for high-speed and low-power applications. It combines a voltage regulator and a precision-fractional reference unit that ensures improved voltage accuracy with minimum power consumption due to its low operating current, high output current, and low dropout voltage. The LM4128BMF-3.0 is suitable for use in a number of applications such as Analog to Digital Converters (ADCs), Digital to Analog Converters (DACs), Data and Line Drivers, Power Supplies, Test and Instrumentation, and Communication and Networking.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description