TPS62801YKAR

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

Introduction

TPS62801YKAR is a low-cost, high-efficiency synchronous step-down switcher regulator designed for battery powered applications such as health care, consumer and mobile consumer products. This device operates from a 4.5V to 6.5V input voltage. It provides an output voltage adjustable from 0.6V up to 99% of the source voltage and delivers excellent transient response with a peak efficiency of up to 96%. TPS62801YKAR features integrated adjustable soft start and fast transient response. It also has an internal power switch and compensation circuitry.

Application Field and Working Principle

The main application field of the TPS62801YKAR is DC/DC buck (step-down) switching regulator. It is mainly used to convert the input voltage to a stable, lower output voltage. It works by using a pulse-width modulation technique, which switches the internal power switch on and off at a high frequency. The power switch is controlled by an internal error amplifier and comparator which compares the output voltage to a reference voltage. The error amplifier in turn drives a pulse-width modulated (PWM) control circuit, which regulates the frequency of the power switch. When the power switch is off, energy is stored in an external inductor; when the power switch is on, energy stored in the inductor is transferred to the output capacitors.

The output voltage is adjustable by connecting a voltage divider to the FEEDBACK pin. The output voltage can be adjusted from 0.6V up to 94.5% of the input voltage. The external frequency setting resistor, connected to the SYNC pin, sets the PWM frequency range of the regulator from 200kHz up to 1MHz. It is important to select a switching frequency outside the frequency bands of sensitive radio frequency applications.

When the input voltage drops below the under-voltage lock-out threshold (UVLO) of 4.5V, the IC is disabled and enters a low-current state. When the input voltage rises above the UVLO voltage, the IC is enabled and resumes its normal operation.

Protection Features

TPS62801YKAR features various protection features to protect the device from damage in case of fault conditions such as over-temperature, over-current, and over-voltage. The device has an over-temperature protection (OTP) that shuts off the internal power switch and puts the device in a low-power state when the die temperature exceeds the threshold. It also has an over-current protection (OCP) that limits the peak current of the internal power switch to prevent it from becoming too hot due to over-current. The device also has an adjustable over-voltage protection (OVP) that turns off the internal power switch when the output voltage reaches the set threshold. This can help prevent damage to the load and the device itself.

Conclusion

In conclusion, TPS62801YKAR is a low-cost, high-efficiency synchronous step-down switcher regulator designed for battery-powered applications. It provides an output voltage adjustable from 0.6V up to 94.5% of the source voltage and delivers excellent transient response with a peak efficiency of up to 96%. It features integrated adjustable soft-start and fast transient response, and protection features such as over-temperature, over-current, and over-voltage protection.

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