TPS2231PWPR

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PMIC or Power Management ICs are used in modern electronics to regulate the flow of power and manage a supply voltage to individual components or circuitry while protecting any component of an electronic circuit from electrical damage. The TPS2231PWPR is a circuit device developed by Texas Instruments and categorized as a PMIC - Power Distribution Switches, Load Drivers. This device is an integrated power mosfet power switch designed to provide up to 2.1A of continuous current overlimited voltage range for applications utilizing 12V power supplies.

Overview of the TPS2231PWPR

The TPS2231PWPR is from the TPS2xx portfolio of advanced power management integrated circuits from Texas Instruments. It is a single-channel power switch designed to provide up to 2.1 A continuous current over an extended voltage range suitable for applications using 12V power supplies. The device gives 2nd-level backup power off pins and control logic signals in order to reduce current draw.

The part number TPS2231PWPR is an ‘Advanced‘ version of the TPS2231P which provides a number of enhanced features such as built-in fault protection, overvoltage protection, built-in current limit and other features. It is available with the standard SOT23-6 package.

Features of the TPS2231PWPR

• Current Limit of 2.1A with Load Transient Response of 0.2 μs
• Improved Thermal Protection to prevent overtemperature shutdown
• Built-in Short Circuit and Overvoltage Protection
• Electrically Improved ESD Rating of 6kV HBM
• Turn-off Delay of 4ms
• Operating Voltage Range of 5.0V to 18V

Application Field of the TPS2231PWPR

The TPS2231PWPR is used in a number of applications requiring a low cost, low power, single-channel integrated power switch. The device provides overload and short circuit protection which makes it suitable for use with battery powered applications. The integrated current limit and fast turn-off time make it suitable for automotive applications, domestic appliances, lighting and motor control. The TPS2231PWPR can be implemented for Hot Swapping, for example for disconnecting power supply during system power-up or power-down.

Working Principle of the TPS2231PWPR

The TPS2231PWPR is an integrated power mosfet power switch which uses a built-in power mosfet and control circuitry to provide up to 2.1A of continuous current over an extended voltage range and provide overload and short circuit protection. The power switch is controlled by a low-voltage control signal which is generated by the external device.

The main features of the device include a built-in current limit, programmable thermal shutdown, overvoltage protection and electrical protection to prevent ESD damage. The maximum on-state resistance of the part number is 0.51Ω and it is capable of switching power up to 2.1A at 25°C.

The operation of the device is based on a voltage mode control scheme. The input voltage is connected to the ON/OFF pin and the high voltage connected to the VCC pin. When the ON/OFF pin is pulled low, the power is switched off and the current draw is reduced. When the ON/OFF pin is pulled high, the power is switched on and the current draw is increased.

The TPS2231PWPR is a simple, low cost, low power device which is ideal for power supply applications. It provides overload and short circuit protection, overvoltage protection, built-in current limit and improved ESD padding. The device is available with a standard SOT23-6 package which makes it easy to use and integrate into any system.

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