TL3842D

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TL3842D is a DC-DC switching controller designed for use in regulated-voltage systems and it is classified under PMIC--Voltage Regulators--DC DC Switching Controllers category. Regulated-voltage systems can provide a steady output voltage even under fluctuations of the input voltage.

TL3842D is designed to work with minimal components and the input voltage can range between 5V to 70V and output voltage from 1.25V to 30V, depending on the configurations. It uses Pulse Width Modulation (PWM) to turn the output device ON and OFF and it delivers good performance in switching power dissipation and voltage regulation.

The basic circuit of the TL3842D is illustrated below:

The voltage regulator requires a control signal (Vctrl) to control the switching frequency of the output device. The output voltage is then regulated by varying the duty cycle of the signal.

It consists of three stages; an input stage, a driver stage, and an output stage. The input stage is made up of an Operational Amplifier (O/P Amp) and a voltage reference (Vref). This stage compares the input voltage, VIN to the internal reference voltage and feeds the difference to the next stage via the O/P Amp.

The driver stage takes the signal from the input stage and amplifies it. Then it is fed to the output stage to regulate the output voltage using PWM. The output stage converts the signal into a switching signal for the output device.

The TL3842D can deliver up to 500mA of steady output current and the switching frequency can range between 200kHz and 1MHz, depending on the input supply. It has an under-voltage lockout feature that prevents the output voltage from dropping below a certain level. It also has an internal shutdown circuit which can be used to turn off the switching regulator.

The TL3842D is a highly efficient DC-DC switching controller and can be used in applications such as LED drivers, DC motor drivers, battery chargers, DC-DC converter circuits, and other switching power supplies. It is perfect for applications that require high-efficiency and accurate voltage regulation.

The specific data is subject to PDF, and the above content is for reference