LP3986BL-2818

Current - Output:	150mA
Base Part Number:	LP3986
Supplier Device Package:	8-µSMD (1.57x1.57)
Package / Case:	8-TFBGA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	60dB ~ 50dB (1kHz ~ 10kHz)
Current - Supply (Max):	320µA
Current - Quiescent (Iq):	130µA
Series:	--
Voltage Dropout (Max):	0.1V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.8V, 1.8V
Voltage - Input (Max):	6V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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Introduction to LP3986BL-2818

The LP3986BL-2818 is a Linear PMIC (Power Management IC) voltage regulator, designed by Texas Instruments, which helps regulate the power supply generated from an external electrical source to maintain enough power supply to a device. It is a single-chip power supply system controller with step-up, step-down and linear regulator integrated functions combined with synchronous rectification power factor correction (PFC) control and a low drop out (LDO) regulator.

Applications of LP3986BL-2818

The LP3986BL-2818 is a versatile device for various applications, especially for manufacturers who design power supplies with multiple power outputs. It is suitable for smart home applications, PDAs, hand-held database equipment and laptop computers, among other devices.Besides, it is also suitable for industrial applications, especially in machines with high power requirements and reliability. Such applications involve CNC machining, controllers, and other similar machines. There are many applications, including synchronization between multiple devices, protecting devices from overvoltage, integrated circuits protection, controlling and monitoring power electronics, load switching, and motor control.

Working Principles of LP3986BL-2818

The LP3986BL-2818 works in three main steps. The first step is pre-regulation, where the device monitors the power coming from the power source and dynamically sets the voltage level and output current with the help of an internal PWM signal.The second step is regulation, where the device limits the output current by controlling the on-off duty cycle of the PWM output, assisting in regulating and fine-tuning the output current level.The third step is overload and short circuit protection. During this step, the LP3986BL-2818 checks the output current to make sure it does not exceed the rated levels. If it does, the device shuts off the output current and sends a signal to the IC for further action.

Conclusion

The LP3986BL-2818 Linear PMIC Power management IC is a versatile device well suited to a wide range of applications. It provides pre-regulation, regulation, and overload and short circuit protection. Its wide array of features makes it an ideal choice for power supply designs that require multiple power outputs, as well as industrial applications with high power requirements and reliability.

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