LP2985IM5X-2.7

Current - Output:	150mA
Base Part Number:	LP2985
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	45dB (1kHz)
Current - Supply (Max):	2.5mA
Current - Quiescent (Iq):	95µA
Series:	--
Voltage Dropout (Max):	0.58V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.7V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LP2985IM5X-2.7 Application Field and Working Principle

Introduction to LP2985IM5X-2.7

The LP2985IM5X-2.7 is a programmable, high-efficiency, low-dropout (LDO) linear voltage regulator from Texas Instruments. This device is designed for use as a general-purpose LDO and includes a precise enable input and a power good flag output. The LP2985IM5X-2.7 has an adjustable output voltage which can be set anywhere in the range of 0.9V to 5.0V. The device can deliver up to 1A output current and has an ultra-low quiescent current of 2.5μA in typical mode.

LP2985IM5X-2.7 Application Field

The LP2985IM5X-2.7 is a very versatile LDO voltage regulator that can be used in a broad range of applications. It is suitable for use in battery-powered systems due to its low quiescent current, high efficiency, and low dropout voltage. The adjustable output voltage makes the device suitable for powering many different kinds of low-power ICs and microcontrollers. This device has been widely used in applications such as portable electronic devices, computer peripherals, human machine interfaces, automotive, and networking.

LP2985IM5X-2.7 Working Principle

The LP2985IM5X-2.7 is a linear voltage regulator that uses a PNP pass transistor (Q1) to control the output voltage. It is a three-terminal adjustable regulator device that takes an input voltage, regulates it, and provides a regulated output voltage. The input voltage is regulated by the series combination of resistors R1 and R2, connected to the ADJ pin. The R1 and R2 are chosen to set the output voltage. When the VIN voltage drops, the transistor Q1 is activated and the voltage drop across Q1 decreases, increasing the output voltage.The enable input (EN) is used to enable or disable the output of the LP2985IM5X-2.7. When the EN pin is pulled high to 0.7V, the device can be enabled. The output voltage will be regulated when the enable pin is high. When the EN pin is low, the device is disabled and the output voltage will be equal to 0V.The power good flag output (PG) provides an indication that the output voltage is within the regulation limits. It is an open collector output and its transistor is controlled by an internal feedback loop. When the output voltage is within the minimum and maximum limits, the voltage across the PG pin will be pulled low, indicating that the output voltage is in regulation.

Conclusion

The LP2985IM5X-2.7 is a versatile, adjustable, and high-efficiency LDO voltage regulator from Texas Instruments. It can be used in a wide range of applications such as portable electronic devices, computer peripherals, human machine interfaces, automotive, and networking. The device has a precise enable input and a power good flag output, making it suitable for powering many different kinds of low-power ICs and microcontrollers.

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