LM4132CMF-3.3/NOPB Integrated Circuits (ICs)

Noise - 0.1Hz to 10Hz:	310µVp-p
Base Part Number:	LM4132
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:	3.7 V ~ 5.5 V
Noise - 10Hz to 10kHz:	--
Series:	--
Temperature Coefficient:	20ppm/°C
Tolerance:	±0.2%
Current - Output:	20mA
Voltage - Output (Min/Fixed):	3.3V
Output Type:	Fixed
Reference Type:	Series
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LM4132CMF-3.3/NOPB

The LM4132CMF-3.3/NOPB is a low-cost, easy-to-use, one-time-programmable (OTP) sequence generator, Voltage Reference and Zero Cross Detector. It is a versatile, low-power, advanced Precision, Low-Dropout (LDO) voltage regulator, voltage detector and voltage reference device, offering a high level of flexibility to the customer. The flexibility of this device makes it extremely suitable in a wide variety of applications.

Application Field

The LM4132CMF-3.3/NOPB provides extremely precise low-voltage regulation and reliable signal generation applications, such as powering low voltage logic or analog circuitry. It is a great choice for applications needing to power embedded and/or programmable electronics, such as gate drivers, signal conditioners, converters, switches and other low-power components. This device can also be used to provide an accurate and stable 3V to 3.6V reference voltage for multiple applications.Examples of other applications using the LM4132CMF-3.3/NOPB are as follows:

• Battery regulators
• High-power lighting and industrial controls
• Medical electronics
• Automotive control applications, such as air-bag control and fuel injection
• Building automation, such as lighting, HVAC and security systems
• Telecommunication and data transmission systems
• Regulated, self-powered measuring instruments
• Power supplies for precision oscillators and A/D converters
• Audio equipment
• PC motherboards

Working Principle

The LM4132CMF-3.3/NOPB is an advanced LDO voltage regulator, voltage detector and voltage reference device, comprising of two paralleled outputs and one sequencer output. The two paralleled outputs provide a low-dropout (LDO) voltage regulator output while the sequencer output provides a logic output.The LM4132CMF-3.3/NOPB uses a precision band-gap reference as its internal voltage reference. This ensures that the output voltage of the device stays at its desired output voltage level even when there are large load or input voltage variations. The current limit of the device further ensures that the output voltage does not vary due to overload conditions.The device also features thermal protection, soft-start control and over-voltage protection which helps the device to operate efficiently and safely even in extreme conditions. The device also features an adjustable current limit which can be set to the optimal value to suit the application’s requirements.In addition to its LDO output, the device also features a zero-crossing detector which can detect and adjust for zero-peak floating signals. This detector is used to detect the output voltage of the device to ensure that the output voltage stays within the desired range. The zero-cross detector also reduces power losses due to power supply inrush currents which can cause reliability issues.Finally, the LM4132CMF-3.3/NOPB also features an I2C interface which can provide further flexibility by allowing users to program the internal registers of the device, including the output voltage and the current limit.

Conclusion

The LM4132CMF-3.3/NOPB is a versatile, low-power, advanced precision, low-dropout (LDO) voltage regulator, voltage detector and voltage reference device. It uses a precision band-gap reference as its internal voltage reference, current limit, and a zero-cross detector to reduce power losses due to power supply inrush currents. In addition, the device also features an I2C interface for further flexibility and can be used in a variety of applications, such as battery regulators, high-power lighting and industrial control, medical electronics, automotive control, building automation and telecommunication and data transmission systems.

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