LP3905SDX-A3/NOPB

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Applications:	Handheld/Mobile Devices
Current - Supply:	--
Voltage - Supply:	3 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	14-WFDFN Exposed Pad
Supplier Device Package:	14-WSON (4x4)
Base Part Number:	LP3905

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LP3905SDX-A3/NOPB Application Field and Working PrinciplePMIC, or Power Management Integrated Circuits, are a vital class of embedded processors used in a variety of electronic applications, from measuring power consumption in automotive and industrial applications to providing battery protection in mobile phones and other portable electronics. The specialised LP3905SDX-A3/NOPB application field and working principle is discussed below.The LP3905SDX-A3/NOPB IC is a low power, voltage-detecting device, with a wide range of operation from -0.3 to 12V. It is capable of detecting any voltage above -0.3V. It has an on-chip voltage comparator with a hysteresis of 0.3V and an open-drain active-low output to indicate output status.The LP3905SDX-A3/NOPB IC is designed to help protect the circuit in a variety of ways. Most notably, the IC protects against a lack of power, something known as brown-out. Brown-out occurs when the power drops briefly or for an extended period of time. This can be caused by voltage dips, any number of electrical faults, or even too much current running through a circuit.To help prevent brown-out, the LP3905SDX-A3/NOPB includes an adjustable voltage threhold value. The voltage below which the IC triggers the output is determined by the Vhigh pin. When the voltage drops below the Vhigh pin, the output (VDET) triggers and the circuit shuts down until the voltage goes back up. This prevents any potential damage to the circuit as a result of brown-out. The LP3905SDX-A3/NOPB also offers a low-current draw, low-cost, and adjustable solution to power management. The IC is capable of handling input voltages up to 12V and can be adjusted easily by the miniature potentiometer contained within the IC. It additionally offers low-current consumption in shutdown mode forces the output to go low, reducing current consumption when the device is not in operation.In conclusion, the LP3905SDX-A3/NOPB is a highly effective power management IC. It offers protection against brown-outs, adjustable voltage threshold values, low-current draw, low-cost and adjustable solutions, and long-term reliability. In addition, its miniature size and feature set make it a feasible option for power management in almost any application.

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