LTC1732EMS-4#TRPBF

LTC1732EMS-4#TRPBF Application Field and Working Principle

LTC1732EMS-4\#TRPBF is a single-phase buck regulator power management integrated circuit(PMIC) of the battery charger family. The LTC1732EMS-4\#TRPBF is designed to provide power to a wide range of battery operated portable devices such as mobile phones, personal digital assistants (PDAs), digital cameras, and MP3 players. The power converter supports a wide output voltage range from 0.5V to 8V and a nominal 2A current. It also provides precharge circuitry, including protection against overcharge and overdischarge conditions.

The LTC1732EMS-4\#TRPBF includes many features built into the power converter IC, which allow for improved system performance and easier implementation into applications. The power manager IC includes an overvoltage/undervoltage protection circuit, inductor current sensing, and soft start circuitry, which is all controlled with a digital input. Additionally, the linear regulator includes an on-chip power MOSFET, which eliminates the need for an external MOSFET in the application.

Working Principle

The LTC1732EMS-4\#TRPBF is a single-phase, synchronous, buck regulator power manager IC that is designed to provide power to a wide range of battery operated portable devices. The power converter supports a wide output voltage range from 0.5V to 8V and a nominal 2A current. It also provides precharge circuitry, including protection against overcharge and overdischarge conditions. The working principle is to use an inductor to store energy, and then use energy transfer to provide the desired voltage and current for the system. First, the voltage is increased by transferring energy from the inductor to a capacitor, which filters the output and direct current to the battery.

After the initial precharge, the battery is monitored and the voltage is kept in regulation by transferring the energy from the inductor to the output stage. The feedback circuitry continuously monitors the output voltage and adjusts the duty cycle of the buck switching controller accordingly. The power manager IC also provides protection features, including an overvoltage/undervoltage protection circuit, inductor current sensing, and soft start circuitry, which is all controlled with a digital input.

Applications

The LTC1732EMS-4\#TRPBF is ideal for battery operated portable devices such as mobile phones, personal digital assistants (PDAs), digital cameras, and MP3 players. It is also used in automotive applications including lead-acid, Li-ion, and Li-polymer charging. Additionally, it is suitable for applications where intelligent battery charging is required, such as in solar photovoltaic and portable power solutions.

The LTC1732EMS-4\#TRPBF is an efficient and cost-effective solution for many battery powered applications. The power converter provides a wide output voltage range and supports a nominal 2A current. It also provides precharge circuitry, including protection against overcharge and overdischarge conditions. Additionally, the power manager IC provides an array of features, such as overvoltage/undervoltage protection, inductor current sensing, and soft start circuitry, which is all controlled with a digital input.

The LTC1732EMS-4\#TRPBF provides high performance and reliability in battery powered systems, making it ideal for a wide range of applications. It is a single-phase buck regulator, power manager IC of the battery charger family, designed to provide power to a wide range of battery operated portable devices.