LM3687TL-1815/NOPB Integrated Circuits (ICs)

Voltage/Current - Output 3:	--
Base Part Number:	LM3687
Supplier Device Package:	9-TuSMD
Package / Case:	9-WFBGA
Mounting Type:	Surface Mount
Operating Temperature:	-30°C ~ 125°C
Voltage - Supply:	2.7 V ~ 5.5 V
w/Sequencer:	No
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	1.5V, 350mA
Voltage/Current - Output 1:	1.8V, 400mA
Frequency - Switching:	1.8MHz
Number of Outputs:	2
Function:	Any Function
Topology:	Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction of the LM3687TL-1815/NOPB

The LM3687TL-1815/NOPB is a voltage regulator from Texas Instruments. It is a low-cost, efficient and easy-to-use solution for designing and implementing a power system. It is a voltage regulator which can provide up to 5A of regulated current with a maximum output of 18V while also providing very low EMI/EMC and noise levels.

Application Fields and Working Principle of LM3687TL-1815/NOPB

The LM3687TL-1815/NOPB is designed for a variety of applications including computing, communications, industrial and consumer. It is suitable for supplies with 5A or less current consumption and a maximum output voltage of 18V.The working principle of the LM3687TL-1815/NOPB is simple and straightforward. This voltage regulator uses two voltage regulation stages to maintain the desired output voltage. In the first stage, the voltage regulator provides a regulated supply for the load. This is done using a Pulse Width Modulation (PWM) technique that modulates the duty cycle to maintain a constant output voltage. The second stage of regulation consists of a feedback control loop that adjusts its voltage to maintain the desired output voltage.The LM3687TL-1815/NOPB also includes a unique feature known as "skip-cycle regulation". This feature permits the LM3687TL-1815/NOPB to increase or decrease the output voltage while preventing the peak current from exceeding the limit. This feature also reduces the power consumption by reducing the on-time and hence the conducted EMI.

Advantages of the LM3687TL-1815/NOPB

The LM3687TL-1815/NOPB has several advantages over other voltage regulators. It is cost-effective, efficient and easy to use, and provides a low EMI/EMC level. Moreover, its skip-cycle features allow for dynamic adjustment of the output voltage, thus reducing power consumption by reducing the on-time and peak current.The LM3687TL-1815/NOPB also provides excellent electrical protection from transient overvoltages, undervoltages, and overcurrents. It is also capable of automated/manual protection from excessive power consumption. This voltage regulator also provides a low quiescent current (operating) during normal operation.Finally, the LM3687TL-1815/NOPB can be programmed to implement power saving modes such as “Light Load Disconnect”, allowing for further optimization of the operating cost.

Conclusion

The LM3687TL-1815/NOPB is an excellent voltage regulator from Texas Instruments that can be used in a wide range of applications, including computing, communications, industrial and consumer. It is cost-effective, efficient and easy to use, and provides a low EMI/EMC level. Moreover, its skip-cycle regulation feature allows for dynamic adjustment of the output voltage and it has several built-in safety features for protection against transient overvoltages, undervoltages, and overcurrents. In addition, it can be programmed to enable power saving modes. Overall, the LM3687TL-1815/NOPB is an excellent choice for designers and engineers looking for a reliable and cost-effective voltage regulator.

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