LM5025MTC/NOPB

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The LM5025MTC/NOPB is an integrated switching voltage regulator and pulse width modulation (PWM) controller IC from Texas Instruments. It is part of their LM5000 family and provides high frequency, fixed frequency current mode switching regulator control with internal 2.5V band gap reference output. The LM5025MTC/NOPB is designed to enable low cost, high performance solutions in a 6-pin thermally enhanced SOP package.

The LM5025MTC/NOPB is a device that belongs to the Power Management Integrated Circuit (PMIC) category, more specifically the Voltage Regulator sub-category and further down to the DC/DC Switching Controllers range. This device class provides solutions for regulating either a single (buckor boost) or dual (bidirectional buck-boost) output voltage from a single or multiple input sources with acceptable efficiency and output accuracy ratings.

This device has a wide input voltage range of 2.3V to 5.5V. The internal reference voltage of 2.5V is generated by an on-board band gap voltage reference, which can be accurately maintained over a wide range of operating conditions. It also features an adjustable oscillator frequency that can be adjusted between 150 kHz and 900 kHz. This feature can be used to optimize the output ripple voltage and total harmonic distortion (THD) of the system.

The LM5025MTC/NOPB features a constant-frequency voltage mode control circuit. This is a self-centering control circuit that monitors the voltage error (VE) between the feedback input and the reference output. Whenever the VE exceeds a pre-determined amount it makes a correction for it in the form of a PWM signal. This PWM signal drives the power switch to adjust the output voltage accordingly.

The LM5025

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