LM3544MX-L

Voltage - Supply (Vcc/Vdd):	Not Required
Base Part Number:	LM3544
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 125°C (TJ)
Fault Protection:	Current Limiting (Fixed), Over Temperature, UVLO
Features:	Status Flag
Input Type:	Non-Inverting
Rds On (Typ):	90 mOhm
Current - Output (Max):	500mA
Series:	--
Voltage - Load:	2.7 V ~ 5.5 V
Interface:	On/Off
Output Type:	N-Channel
Output Configuration:	High Side
Ratio - Input:Output:	1:2
Number of Outputs:	4
Switch Type:	USB Switch
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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• Introduction to LM3544MX-L

The LM3544MX-L is a Power Management Integrated Circuit (PMIC) from Texas Instruments. It is primarily used for power distribution switches, load drivers and other power management functions. The LM3544MX-L is a cost-effective solution for providing an optimized, integrated solution for providing all of these functions in one compact package.

• Power Distribution Switches and Load Drivers

The LM3544MX-L provides power-distribution switches, load drivers and other power management functions. Power-distribution switches can be used to provide power to multiple peripheral devices and components, such as multiple section banks or embedded system applications. With integrated load drivers, the LM3544MX-L can control up to 8 localized high power signals with a single integrated device. Load drivers are designed to control the turn-on and turn-off of a wide variety of embedded systems and peripherals, such as sensors and motors. The LM3544MX-L also offers an advanced algorithm for load-level detection and dynamic power management, allowing it to mode quickly and accurately to changing power requirements.

• Device Configuration and Features

The LM3544MX-L is available in several packages, including a SOIC-8, TSSOP-8, UQFN-8, and SOIC-3.5 configurations. The device is rated for operation from -40°C to +125°C. It operates from a wide range of input voltages from 2.6V to 6V. Some key features of the device include:

• High-side and low-side power distribution switches
• Five adjustable output voltages from 0.9V to 5.5V
• Fast start-up time
• Quiescent current as low as 10µA
• Power good indicator output

• Power Management Using the LM3544MX-L

The LM3544MX-L provides a number of features designed to facilitate efficient power management. It provides a low-side power-distribution switch that can provide power to eight localized high power signals. As previously mentioned, it also features a dynamic power management algorithm that helps maximize system efficiency by quickly and accurately responding to changing power requirements. A power good indicator output provides an easy way to monitor the power supply for out of specification operations. The device also offers integrated power sequencing and reset signals that allow for system reset and power-on sequence control. The integrated reset feature provides a system reset with the push of a button. The power-on sequence feature simplifies the power-on sequence of multiple peripherals. Lastly, the device features an integrated voltage tracking regulator that can be used to reduce power losses due to voltage drops in the power distribution rail.

• Conclusion

The LM3544MX-L is a versatile PMIC that can be used for power distribution switches, load drivers and other power management functions. With its integrated power distribution switch, load drivers, dynamic power management algorithm, power good indicator output, reset and power-on sequence control, and voltage tracking regulator, the LM3544MX-L provides a cost-effective solution for these applications.

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