LM22673TJE-ADJ/NOPB

Voltage - Output (Min/Fixed):	1.285V
Base Part Number:	LM22673
Supplier Device Package:	TO-263-7 Thin
Package / Case:	TO-263-7 Thin
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	500kHz
Current - Output:	3A
Voltage - Output (Max):	37V
Series:	SIMPLE SWITCHER®
Voltage - Input (Max):	42V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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<p>The LM22673TJE-ADJ/NOPB is a fully integrated, high efficiency, high quality synchronous step-down voltage regulator, suitable for a wide range of applications. It features integrated low RDS(on) MOSFETs, wide input voltage range from 4V to 22V, 2.5A continuous current output and adjustable output voltage from 0.6V to 7V.</p><p>The LM22673TJE-ADJ/NOPB is part of the Texas Instruments Simple Switcher family of devices, which offers a straightforward solution for board space and cost sensitive applications. The device includes a wide range of features which enable very efficient, low-noise, low-power and low-cost designs.</p><p><strong>Application field</strong></p><p>The LM22673TJE-ADJ/NOPB is suitable for various applications, including industrial, telecom and automotive systems. It is capable of providing power for radios and baseband processors in mobile phones, as well as providing the necessary power for DC motors, relays, actuators and other system components.</p><p>The LM22673TJE-ADJ/NOPB also has the capability to provide noise-less operation in high performance (audio-grade) applications. It is capable of precisely regulating output voltages as low as 0.6V, making it suitable for DDR2/DDR3/LPDDR2 SDRAM systems, FPGA core supplies, digital camera power supplies, wireless power amplifiers and other applications.</p><p><strong>Working Principle</strong></p><p>The LM22673TJE-ADJ/NOPB is equipped with an onboard DC/DC converter, which can convert the input voltage to a precise regulated output voltage. It consists of an ideal diode rectifier, a converter control section, a MOSFET driver and an onboard MOSFET switch.</p><p>The converter control section is responsible for controlling the switch, ensuring it is turned on for the minimum time necessary for the desired output voltage. This gives the LM22673TJE-ADJ/NOPB a high efficiency, as power is not wasted when the device is in standby mode. The ideal diode rectifier allows the device to efficiently maintain the output voltage even in cases where the input voltage falls below the output voltage during short-term under-voltage events.</p><p>The MOSFET driver ensures that the switch is turned on and off at the right time and with the right amount of power. This ensures the correct amount of voltage is applied to the output at all times, without any over or under-voltage conditions.</p><p>The onboard MOSFET switch uses low RDS(on) MOSFETs which are optimized for low power applications, ensuring lowest power loss and thereby high efficiency. The low on-resistance of the MOSFETs ensures that the voltage drop across the internal MOSFET is minimized, further boosting efficiency.</p><p>The LM22673TJE-ADJ/NOPB also incorporates other features to ensure reliable operation, such as output over-voltage (OVP), overload protection (OLP) and short-circuit protection (SCP). The output over-voltage protection ensures that the output voltage will not rise above a certain threshold, while the overload and short-circuit protection ensure that the device will not be damaged under abnormal operating conditions.</p><p>The LM22673TJE-ADJ/NOPB is designed to be a complete, highly efficient step-down voltage regulator solution, suited for a wide range of applications. Its integrated features and strong protection capabilities make it an ideal choice for power supply design in industrial, telecom and automotive systems.</p>

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