LP3996SD-3308 Integrated Circuits (ICs)

Current - Output:	150mA, 300mA
Base Part Number:	LP3996
Supplier Device Package:	10-WSON (3x3)
Package / Case:	10-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	58dB ~ 45dB, 70dB ~ 60dB (1kHz ~ 20kHz)
Current - Supply (Max):	170µA
Current - Quiescent (Iq):	100µA
Series:	--
Voltage Dropout (Max):	0.22V @ 150mA, 0.55V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V, 0.8V
Voltage - Input (Max):	6V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

LP3996SD-3308 is a high-performance 3-channel linear voltage regulator developed by Texas Instruments for space-constrained, low power applications. This 12V regulator consists of an integrated ESD protection and reverse current blocking, making it well suited for powering sensitive peripherals. It has a low quiescent current of 8.4 mA and is able to deliver up to 1 Amp of regulated current. Furthermore, it features a high-side operating temperature range of -40°C to 125°C, making it suitable for a wide range of applications.

Application Field

The LP3996SD-3308 regulator is designed to be used in applications where space is a major constraint, such as system-on-chip designs and wearable electronics. It is a compact and low power linear regulator, which makes it ideal for powering peripherals such as sensors, LCDs and antenna. It is also designed with reverse current protection, meaning that it can be used in power supply lines to protect other components and prevent current backflow.

Working Principle

The LP3996SD-3308 is a three-channel linear voltage regulator. It has an integrated high- and low-side ESD protection and reverse current blocking. The regulator utilizes an On-Off switch to allow an input voltage of up to 12V to be supplied to the regulator. The regulator then uses an amplifier-compensator circuit to regulate the output voltage to a desired level. The regulator can output a maximum current of 1A, making it suitable for powering or charging devices. The LP3996SD-3308 regulator has a quiescent current of 8.4mA, which is low compared to other regulators. Low quiescent current helps to reduce heat and power dissipation, and therefore increases efficiency. The regulator also features short circuit protection, thermal overload protection, and current limit protection.

Conclusion

The LP3996SD-3308 is a compact and low-power linear voltage regulator developed by Texas Instruments for Space-constrained, low power applications. The regulator offers up to 1 Amp output current and is able to maintain a regulated voltage despite varying input voltages. It also features integrated ESD protection and reverse current blocking, making it well suited for powering peripherals in power supply lines. Furthermore, it has a low quiescent current of 8.4mA, helping to reduce heat and power dissipation. The LP3996SD-3308 is ideal for powering sensitive peripherals while maintaining maximum efficiency.

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