LM2674LD-3.3/NOPB

Voltage - Output (Min/Fixed):	3.3V
Base Part Number:	LM2674
Supplier Device Package:	16-WSON (5x5)
Package / Case:	16-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	260kHz
Current - Output:	500mA
Voltage - Output (Max):	--
Series:	SIMPLE SWITCHER®
Voltage - Input (Max):	40V
Voltage - Input (Min):	6.5V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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TLM2674LD-3.3/NOPB is a 3.3V fixed output DC/DC switching regulator designed for low cost and minimum space consuming applications. It is categorized as a PMIC (Power Management Integrated Circuit), and fall under the Voltage Regulators - DC DC Switching Regulators subcategory. The TLM2674LD-3.3/NOPB switching regulator is an ideal fit for applications which require low output ripple, minimal noise, low cost, and low input voltage. It ensures neat signal filtering and short circuit protection, and its wide input voltage range (2.7V to 26V) makes it suitable for automotive applications. The main building blocks of the TLM2674LD-3.3/NOPB are Start/Stop Control Circuit, PWM/Sampling Circuit, Error Amplifier, Internal Clock, High Current Output Regulator, Soft-Start Circuit, Shut Down Circuit, and Output Voltage Monitor.The Start/Stop Control Circuit acts as a switch that enables or prevents the power supply from turning on. This circuit is responsible for detecting power signals and switching the power supply on or off accordingly. The PWM/Sampling Circuit is responsible for the switching speed of the TF2674LD-3.3/NOPB. It determines the frequency of the output voltage by sensing the input voltage and generating a signal at the suitable frequency. The Error Amplifier acts as a bridge between the external feedback loop and the PWM (Pulse Width Modulation) circuit. It compares the reference voltage with the feedback voltage and generates an error signal. The Internal Clock generates the switching frequency for PWM. Its output frequency is determined according to the duty cycle of the PWM circuit. The High Current Output Regulator is responsible for providing the load current to the load. It is capable of delivering high output current, suitable for driving inductive loads. The Soft-Start Circuit helps in maintaining the output ripple and starting up the power supply safely, with minimum output voltage surge. The Shut Down Circuit takes care of the power supply, ensuring that it is not over-stressed and becomes damaged, by turning off the power supply. Lastly, the Output Voltage Monitor feeds back the output voltage to the Error Amplifier for comparison. This ensures that the output voltage is maintained within the desired range.To summarize, the TLM2674LD-3.3/NOPB is a DC/DC switching regulator with a 3.3V fixed output, suitable for a wide range of applications. With its low cost and minimal size, it is an ideal solution for applications which require low output ripple, minimal noise, and low input voltage, while still delivering a high current. It is an important building block of PMIC (Power Management Integrated Circuit) which falls under the Voltage Regulators - DC DC Switching Regulators subcategory.

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