TPS71519DCKR

Current - Output:	50mA
Base Part Number:	TPS71519
Supplier Device Package:	SC-70-5
Package / Case:	5-TSSOP, SC-70-5, SOT-353
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current
Control Features:	--
PSRR:	60dB (100kHz)
Current - Quiescent (Iq):	4.2µA
Series:	--
Voltage Dropout (Max):	0.75V @ 50mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.9V
Voltage - Input (Max):	24V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS71519DCKR Application Field and Working Principle

The TPS71519DCKR is a 1.2A (min) low-dropout voltage regulator with an ultra-low quiescent current of 6.5μA (typical). This device is designed to provide excellent load and line regulation in circuits that require a low-dropout feature for a smooth supply-voltage regulation. It is specifically designed for systems requiring tight regulation and low quiescent current. The TPS71519DCKR is rated for a full temperature range from -40°C to 125°C.

Features

The TPS71519DCKR offers the following features:

• Low quiescent current: 6.5μA (typical) at room temperature
• High power supply rejection ratio: 75dB (min) at 1kHz
• Low output noise: 40μVRMS (max)
• Low dropout voltage: 700mV (typical) @1.2A
• Over-temperature protection: Maximum temperature of +125°C
• High PSRR: 70dB (min) at 1kHz

Applications

The TPS71519DCKR is suitable for applications in the following fields:

• Communication systems
• Portable electronics
• Medical instruments
• Consumer electronics
• Battery-powered devices
• Industrial systems

Working principle

The TPS71519DCKR is a low-dropout voltage regulator with a high-power supply rejection ratio and low quiescent current. It is a three-terminal device which regulates an output voltage in response to loading and line regulation. The output of the TPS71519DCKR is adjustable from 1.2V to 5V.The device includes a reference voltage generator and an error amplifier. When the output voltage is loaded or is subject to line regulation, the error amplifier compares the actual output voltage with the reference voltage. If the actual output voltage is lower than the fixed reference voltage, the error amplifier increases the output voltage by passing more current through the pass transistor. Similarly, if the output voltage is higher than the reference voltage, the error amplifier reduces the output voltage by passing less current through the pass transistor. The device also has over-temperature and short circuit protection, to prevent excessive current, which can cause circuit damage. This device is designed to provide an accuracy of ±3% and a high power supply rejection ratio, which ensures the output voltage is maintained even in the presence of varying input voltage.In summary, the TPS71519DCKR is a low-dropout voltage regulator with high-power supply rejection ratio, low quiescent current, and low output noise. It is suitable for a wide range of applications, from communication systems to industrial systems. Its adjustable output voltage from 1.2V to 5V makes it suitable for various applications.

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