TPS3701DDCR

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

The TPS3701DDCR linear-comparator is a voltage detector specifically designed to monitor various power rail applications such as high-side and low-side supply monitoring in DC/DC and AC/DC converters, circuit protection, and extended battery and supercapacitor management. This device is versatile and the flexibility of configuration is suitable for a large range of applications. Its low-voltage differential and operation down to a 0.5V minimum input threshold make it ideal for low-precision and low-power applications. This application note is intended to provide an overview of characteristics, features, and applications of the TPS3701DDCR.

Features of the TPS3701DDCR

The TPS3701DDCR provides several key features. It is a low-voltage differential voltage detector, capable of operating from 0.5V to 6V, with an adjustable detection voltage from 0.7V to 5.5V. It can also tolerate overvoltage transients up to 80V. It has a maximum voltage drop of 0.75V and a 0.1% accurate voltage detection. This device comes in a space-saving SOT-23-6 package and operates over a wide temperature range of -40°C to 125°C.

The device also offers advanced features like hysteresis and detection confidence, which give the user the ability to further customize their numerical and linear comparator. Hysteresis is an adjustable parameter and is set by an external capacitor. The hysteresis varies from 0 to 3.5V, and the detection confidence allows the user to set thresholds beyond the oscillator threshold. This may be helpful in applications that require a more robust accuracy. Furthermore, the device comes with overvoltage protection up to 80V, making it suitable for high-voltage applications.

Applications for the TPS3701DDCR

The TPS3701DDCR can be used for a variety of linear-comparator and voltage detection applications, from monitoring high-side and low-side supply voltages in AC/DC and DC/DC converters, to extended battery and supercapacitor management. It is also suitable for circuit protection, electronic system housekeeping operations, input over-voltage protection, and noise-sensitive system reset operations.

For example, the TPS3701DDCR is the ideal device for monitoring battery levels in mobile devices. Its low voltage differential and minimum 0.5V input threshold allow it to operate accurately even at low voltages. The device can also detect overvoltage transients up to 80V, making it suitable for applications where power supply networks are prone to transient signals. Furthermore, the hysteresis and detection confidence features allow users to customize the voltage detection to work with specific design requirements.

Working Principle of the TPS3701DDCR

The TPS3701DDCR combines an oscillator circuit, an adjustable hysteretic comparator, and a tri-state buffer amplifier in a single IC. It operates in two stages: the oscillator stage and the adjustable hysteretic comparator stage. The oscillator stage is a simple single-pole oscillator. It uses a resistor connected to the reference voltage on the negative terminal and a capacitor connected to the output pin connected in series. This creates an RC network that acts as a feedback loop, and oscillates at a frequency dependent on the values of the resistor and capacitor.

The adjustable hysteretic comparator stage uses an external so-called “set” capacitor, which is connected to the negative input of the comparator. The voltage at the positive input of the comparator is dependent on the reference voltage and the resistor connected to it. When the external capacitor is increased, the hysteretic threshold voltage is increased, and vice versa.

The tri-state buffer amplifier is then used to output either a low or a high state, depending on the input voltage. The output of the amplifier is either low when the voltage drops to the set voltage, or high when the voltage rises above the set voltage.

In summary, the TPS3701DDCR is a versatile, low-voltage differential precision voltage detector specifically designed for linear-comparator applications. Its low voltage differential and minimum 0.5V input threshold make it suitable for low-precision and low-power applications. Its hysteresis and detection confidence features also provide the user with further customizability. The device is suitable for a variety of applications, including AC/DC and DC/DC converters, circuit protection, extended battery and supercapacitor management, and more.

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