LM3354MM-5.0/NOPB

Voltage - Output (Min/Fixed):	5V
Base Part Number:	LM3354
Supplier Device Package:	10-VSSOP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	1MHz
Current - Output:	90mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.5V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Charge Pump
Output Configuration:	Positive
Function:	Step-Up/Step-Down
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The LM3354MM-5.0/NOPB is a DC/DC switching regulator from Texas Instruments\' portfolio of power management integrated circuits (PMICs). This product works by regulating the voltage from a DC source, usually a battery, to a 5V output. This type of regulator is useful in handheld electronic devices, such as mobile phones and music players, where efficient power management is critical.

Application Field

The LM3354MM-5.0/NOPB works in a wide range of applications, including mobile phones and music players. By regulating the source voltage to a reliable 5V reference, it ensures that the device performance is not compromised by variations in the source voltage. It is also suitable for use in a variety of power management applications where a reliable 5V is required, such as in automotive systems, avionics, medical monitors, and instrumentation.

Features

The LM3354MM-5.0/NOPB offers a number of features which make it well suited to power management applications. These include:
•Wide Input Voltage Range (2.3V - 9V)
•Programmable Output Voltage (500mV - 5V)
•High Efficiency (Up to 95%)
•Integrated Protection Features (Overcurrent protection, thermal shutdown, etc.)
•Flexible Control Options (Pulse-Width Modulation (PWM) and Pulse-Frequency Modulation (PFM))
In addition, it is available in a range of package sizes and is RoHS-compliant.

Working Principle

The LM3354MM-5.0/NOPB is a three-pin DC/DC switching regulator that works in a PWM or PFM mode. The regulator takes an input voltage, typically from a battery, and regulates it to a voltage that is suitable for the device it is powering. In PWM mode, the regulator uses an internal oscillator to determine the PWM frequency, with an on-time of 0.8µs to 1000µs. In PFM mode, the regulator monitors the output voltage and automatically adjusts the switching frequency to optimize efficiency. The LM3354MM-5.0/NOPB includes protection features that prevent damage to both the device and the output voltage. These include overcurrent protection, output overvoltage and undervoltage protection, thermal shutdown, and reverse current protection.

Conclusion

The LM3354MM-5.0/NOPB is a three-pin DC/DC switching regulator from Texas Instruments. It is suitable for a wide range of applications, including mobile phones and music players, automotive systems, avionics, medical monitors and instrumentation. The regulator regulates the source voltage to a reliable 5V reference, and features an efficient design, integrated protection features, and flexible control options. Its working principle involves regulating the source voltage to a suitable level with an integrated oscillator in a PWM or PFM mode.

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