LTC4120IUD#PBF

PMIC - Battery Chargers are types of ICs specifically designed for charging Li-ion and Li-Polymer batteries in applications such as phones, media players, tablets, laptop computers and other handheld devices. The LTC4120IUD#PBF is a dual-input, bidirectional, high-efficiency current mode battery charger IC which supports simultaneous buck-boost charging and discharging at up to 12V. It is designed to work in applications such as 5V USB-C wall adapters, 5V USB-C PD (Power Delivery) sources, 12V car chargers and fixed voltage sources such as 28V Telecom chargers.

The LTC4120IUD#PBF integrates two synchronous buck converters operating up to 500kHz and two synchronous Boost converters operating up to 350kHz, allowing for simultaneous charging and discharging. The integrated Boost regulator operates in either buck or boost modes, allowing for high efficiency operation in a variety of conditions. The LTC4120IUD#PBF also features high-efficiency current mode control using either a single inductor or two coupled inductors.

The LTC4120IUD#PBF supports a wide range of input voltages from 0V to 20V. This allows for improved system flexibility, as a single charger can be used to support many different input voltage sources. The device also features adjustable current limits, which allows for precise control of system power flow when charging or discharging the battery. The LTC4120IUD#PBF also features a Dual Inputs with Automatic user controllable priority where the device can simultaneously take power from two separate v sources and combine the power to charge or provide power to load. This allows the device to optimize system efficiency and maximize power delivery.

The LTC4120IUD#PBF also integrates a battery-side switch which reduces system complexity and cost. The switch controls the connection between the battery and the system load, allowing the device to be used to charge the battery or provide power to the system load, or both. The device also features a wide input voltage range, allowing it to work with a variety of input power sources. The device also features adjustable current limits, allowing for precise control of system power flow.

The LTC4120IUD#PBF also integrates a programmable constant-on-time (COT) controller which allows for automatic power-on and power-off sequencing when the input voltage, input current or temperature all exceed specified levels. The integrated MOSFET drivers are designed to minimize losses in the battery and system switches, allowing for higher efficiency operation.

The LTC4120IUD#PBF also integrates over-temperature, over-voltage and under-voltage protection, allowing for improved system reliability. The device also features a power-good output which indicates when the system is in regulation, allowing for improved system monitoring. The device also includes a comprehensive set of diagnostic functions such as battery temperature monitor and charge status indicators, allowing for improved system diagnostics.

The LTC4120IUD#PBF is an ideal choice for applications requiring simultaneous buck-boost charging and discharging of battery sources, as well as support for wide input voltage and current limits, voltage and temperature monitoring, programmability and diagnostic functions. The device is suitable for use in a variety of applications including mobile phone, media players, laptop computers and other handheld devices. The LTC4120IUD#PBF is a cost-effective solution which provides reliable and efficient operation in a wide variety of application.