LMR16006YQDDCTQ1

Series:	Automotive, AEC-Q100, SIMPLE SWITCHER®
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Output Type:	Adjustable
Number of Outputs:	1
Voltage - Input (Min):	4V
Voltage - Input (Max):	40V
Voltage - Output (Min/Fixed):	0.765V
Voltage - Output (Max):	38.8V
Current - Output:	600mA
Frequency - Switching:	2.1MHz
Synchronous Rectifier:	No
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	SOT-23-6 Thin, TSOT-23-6
Supplier Device Package:	TSOT-23-6

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Introduction

The LMR16006YQDDCTQ1 is a DC/DC Switched Mode Variable Output Voltage Regulator. It is designed to provide a regulated output voltage with incorporated features such as fixed power, pulse width modulation (PWM) and output voltage tracking. This PMIC offers highly efficient power conversion within a wide input voltage range, making it ideal for applications ranging from automotive to industrial.

Application Field

The LMR16006YQDDCTQ1 is a highly efficient, robust and feature-rich DC/DC switched-mode variable output voltage regulator. It is widely deployed in a variety of applications requiring a stable and accurate output voltage such as automotive, RF, industrial and lighting systems.In automotive applications, the LMR16006YQDDCTQ1 is used to provide multiple output voltage rails for the various monitoring systems ranging from temperature and humidity to vehicle speed and these outputs are configurable for voltage and current requirement. Additionally, its PWM feature offers good dynamic response, making it suitable for controlling automotive fuel pumps, hydraulic systems, infotainment systems and many more. Furthermore, this DC/DC voltage regulator is suitable for applications requiring efficient and accurate output voltage at low power. The variable output voltage feature makes it ideal for continuous power supply with respect to the various load conditions in RF systems and industrial controls. In addition to its wide operating voltage range, low noise and fast transient response make it an ideal choice for contract illumination systems and displays in medical systems, calculators and medical equipment.

Working principle

The LMR16006YQDDCTQ1 works on the principle of Switched-Mode Power Electronics (SMPS). In this principle, an offering waveform is obtained by switching the power switch ON and OFF at a very high frequency. Due to this waveform, the regulated output voltage is obtained. The working of the regulator can be divided into two sections:1. Control Section2. Power Section

Control Section

The control section is responsible for detecting current and voltage values at the output and comparing them with the predetermined values. The voltage value is fed to the comparator circuitry to detect any change in the waveform. This is passed to the oscillator block, which has a control loop configuration, aiming to keep the required output voltage. The oscillator circuitry then sends the control signal to the power switch block, which turns the main switch ON or OFF accordingly. As it is the main switch with high-frequency operation, the rest of the circuitry will stay off to minimize power losses.

Power Section

The power section is responsible for converting the input voltage, as detected by the control section, into a required output voltage. This section consists of an inductor, an output capacitor, a voltage reference, and a feedback comparator. The inductor is responsible for storing the energy in a magnetic field and then releasing it to the output capacitor. The inductor works as the primary switch, while the output capacitor works as the secondary switch. The voltage reference ensures that the required output voltage is maintained irrespective of the input voltage. The feedback comparator monitors the output voltage of the regulator and adjusts the switching frequency to maintain the output voltage according to the input voltage.

Conclusion

The LMR16006YQDDCTQ1 is an advanced PMIC offering highly efficient and accurate output voltage through its variable output voltage and PWM features over a wide input voltage range. This makes it ideal for a variety of applications ranging from automotive to industrial. The switched-mode power electronics principles used in the DC/DC voltage regulator allow for high efficiency with minimal power loss.

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