LM2664M6X/NOPB

Voltage - Output (Min/Fixed):	-Vin, 2Vin
Base Part Number:	LM2664
Supplier Device Package:	SOT-23-6
Package / Case:	SOT-23-6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	80kHz
Current - Output:	40mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	1.8V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Charge Pump
Output Configuration:	Positive or Negative
Function:	Ratiometric
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LM2664M6X/NOPB Application Field and Working Principle

The LM2664M6X/NOPB is a monolithic step-up DC-to-DC converter with high output voltage accuracy, low quiescent current, and low output ripple voltages. It is designed to convert a low input voltage to a higher output voltage, providing very low solution cost, low noise, and high efficiency. The LM2664M6X/NOPB is suitable for a wide range of DC-DC conversion applications such as, but not limited to portable (hand-held) applications, consumer electronics, automotive, and industrial applications.

Typical Applications

The LM2664M6X/NOPB is well-suited for many DC-DC conversion applications such as electric vehicle charging, low battery indication circuits, and pulse-width modulation (PWM) controllers. It can be used to charge batteries and other energy systems, as well as provide DC-to-DC conversion of signal levels. The LM2664M6X/NOPB is also useful for powering microprocessors, allowing for the reduction in CPU power consumption.

Features

The LM2664M6X/NOPB is an integrated monolithic step-up DC-to-DC converter with low starting current, low ripple voltage, and low quiescent current. The module has a wide range of input voltage from 2.5V to 28V, with adjustable output voltage from 3V to 40V with 2% accuracy. This converter provides very efficient synchronized switching, with a switching frequency range of 1MHz up to 5MHz.Additionally, the LM2664M6X/NOPB features built-in temperature protection and has an adjustable soft-start capability to prevent in-rush current during startup. The device can also be used in parallel configurations providing an output current up to 10A.

Working Principle

The working principle of the LM2664M6X/NOPB is based on the self-oscillation method of DC-DC conversion and utilizes switching transistors in series with resistive components to create a voltage difference between the input and the output. The input DC voltage is applied to the base of the two switching transistors, one acting as an “on” transistor and the other acting as an “off” transistor in order to switch the current flow from the input to the output. As the input voltage increases, the “on” transistor turns on and the “off” transistor turns off for a short period of time allowing the current to flow from the input to the output. This process repeats at a rate determined by the components of the circuit.

Conclusion

In conclusion, the LM2664M6X/NOPB is a very versatile and reliable monolithic DC-to-DC step-up converter with a wide range of adjustable output voltage. It features very efficient operation and switching, low quiescent current, temperature protection, and a low ripple output. It is suitable for many applications such as charging batteries, powering microcontrollers and microprocessors, and providing signal level conversion. The device is simple to use and provides a very cost-effective solution for DC-DC conversion.

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