LM27313XMFX/NOPB Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	5V
Base Part Number:	LM27313
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	1.6MHz
Current - Output:	800mA (Switch)
Voltage - Output (Max):	28V
Series:	--
Voltage - Input (Max):	14V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tape & Reel (TR)

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PMIC - Voltage Regulators - DC DC Switching Regulators

The LM27313XMFX/NOPB is a switching regulator integrated circuit from Texas Instruments (TI). It\'s designed for high efficiency power management of portable devices. It uses DC-DC buck topology, a compact footprint and low noise for excellent system performance. The IC can be used in a wide range of applications, such as powering a battery, powering and controlling the LCD, powering a microprocessor and other peripheral components and managing power in a communication platform or point-of-sale system.

Application Field

The LM27313XMFX/NOPB is suitable for a variety of applications requiring high efficiency and advanced power management in portable devices. Since it has a wide input voltage range (4.6 V to 40 V) and output range (up to 24 V), it is especially suitable for systems powered by higher voltage help as Solar/Automotive batteries. This makes it ideal for automotive, industrial and telecom applications and also suitable for powering high-end digital applications that require low noise and high efficiency.

Working Principle

The LM27313XMFX/NOPB integrates several components, including the switch-mode converter, power pass devices and protection circuitry. It also includes thermal protection. The integrated switch-mode converter allows the input voltage to be converted to the desired output voltage. The converter operates in a buck-boost or buck-to-buck configuration across the input voltage range of 4.6V to 40V. It is also capable of implementing multi-level synchronous rectification for better efficiency. The power pass devices along with two high-side switches and two low-side switches form a four switch synchronous buck-boost converter. They transfer the power from the input to the output. The low-side switches are in series and the high-side switches are in parallel for bidirectional power flow. The protection circuitry limits the input and output current, ensures light load current delivery, prevents inrush current, and provides over voltage and over temperature protection.The LM27313XMFX/NOPB also includes thermal protection to prevent damage to the IC due to excessive temperature. The thermal protection is provided by a thermal switch which monitors the internal temperature on a switching chip and an external thermistor. Overall, the LM27313XMFX/NOPB is an efficient and reliable switching regulator IC with a wide input voltage range and an integrated solution for advanced power management in portable devices.

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