LP3928TLX-1828/NOPB

Input Signal:	--
Base Part Number:	LP3928
Supplier Device Package:	16-µSMD (2x2)
Package / Case:	16-WFBGA
Mounting Type:	Surface Mount
Features:	SIM Card Interface
Operating Temperature:	-40°C ~ 85°C (TA)
Data Rate:	--
Output Type:	Tri-State, Non-Inverted
Output Signal:	--
Series:	--
Voltage - VCCB:	1.65V ~ 3.6V
Voltage - VCCA:	1.65V ~ 1.95V
Channels per Circuit:	3
Number of Circuits:	1
Channel Type:	Bidirectional
Translator Type:	Voltage Level
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

LP3928TLX-1828/NOPB is a highly integrated device that combines an analog level shifter and a low-voltage logic translator in a small package. It is designed to simplify the design process for applications that require interface compatibility between two voltage domains. Some potential applications include communication systems that interface between high speed and low speed operation, medical and industrial equipment with separate communication buses and microcontrollers in applications with batteries. The product offers the advantages of low power and high integration.

Application Field

The primary application of LP3928TLX-1828/NOPB is in communication systems. It is used to bridge the interface gap between high voltage operation voltage(VH) and low voltage operating voltage(VL). Because of its low power and high integration, it also makes an ideal choice for medical and industrial equipment with separate communication buses and microcontrollers in applications with batteries.LP3928TLX-1828/NOPB can be used to implement a wide range of functions such as level shifting, data buffering, and address decoding and multiplexing. It can be used to bridge the voltage gap between two different voltage domains, from very high voltages to very low voltages. It can also be used for level shifting for different buses, for example for UARTs, I2C, and SPI buses.

Working Principle

The LP3928TLX-1828/NOPB utilizes an internal voltage regulator to set the level shifts. The regulator creates two reference voltages with adjustable margin to accommodate different gate threshold voltages. This means that the internal reference voltages are adjustable and optimized for any particular device. The output voltage of the LP3928TLX-1828/NOPB is determined by the reference voltages. In the case of high-to-low shifting, the reference voltage is set to the desired equation VH-Vref or Vref-VL. On the other hand, in the case of low-to-high shifting, the reference voltage is set to VH+Vref or VL-Vref. The output of the LP3928TLX-1828/NOPB is controlled by a digital control register. This register is programmed with a set of instructions that determine the translators’ behavior. The instructions tell the device how it should act in particular scenarios, such as in the case of a high-to-low voltage level shifting. The instructions also allow the user to turn each translator on and off.

Conclusion

LP3928TLX-1828/NOPB is a highly integrated device that combines an analog level shifter and low voltage logic translator in a small package. It is designed to simplify the design process for applications that require interface compatibility between two voltage domains. It is primarily used in communication systems but can be used for a wide range of functions such as level shifting, data buffering, and address decoding and multiplexing. The LP3928TLX-1828/NOPB utilizes an internal voltage regulator to set the level shift values. It also has a digital control register which can be programmed with instructions to control the translators behavior.

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