TLF1963TBATMA1

TLF1963TBATMA1 Application Field and Working Principle

TLF1963TBATMA1 is a linear voltage regulator designed by Texas Instruments (TI) with outstanding features and advantages. It is a 3.3V voltage regulator with a maximum output current of 0.1A and minimum input voltage of 0.8V. This regulator features on-chip MOSFET for low quiescent current, high efficiency, and low output voltage ripple. It is designed to be used in automotive and industrial applications and it is well suited for driving high currents from low power sources.

Application Fields

TLF1963TBATMA1 is a linear voltage regulator suitable for automotive and industrial applications like lighting, telematics, and automotive audio amplifiers. Also, it can be used in many other high current and power supply applications. It is especially capable in applications which require high efficiency and low output voltage ripple.

Working Principle

The TLF1963TBATMA1 linear voltage regulator consists of a voltage regulator controller, an error amplifier, an internal low side MOSFET, a current sensing circuit, and several other support circuits. The voltage regulator controller maintains the Vout at a constant set point. It does this by using an error amplifier to sense the output voltage and comparing it to an internal reference voltage. When the output voltage deviates from the set point, the error amplifier will adjust the gate voltage of the internal MOSFET to maintain the output voltage. The internal MOSFET is controlled by a pulse width modulated (PWM) signal, which results in high efficiency and low output voltage ripple.

The current sensing circuit senses the current in the output path and is used to create a signal that is proportional to the output current. This signal is then used to adjust the switching frequency of the PWM signal, resulting in an improved transient response.