LTC3733CUHF-1#PBF

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LTC3733CUHF-1#PBF is a step-up current mode DC-DC controller IC suitable for applications that require extreme output accuracy and very long periods of battery operation in portable products. Its main purpose is to provide an accurate and reliable voltage to the system’s power bus for all components that rely on that bus such as central processing units (CPUs) and memory devices.

The LTC3733CUHF-1#PBF is a highly integrated current mode DC-DC controller that offers very accurate output current and voltage regulation and up to 85% efficiency. The device integrates a low voltage dual N-Channel MOSFET, an internal precision oscillator, and a high speed current-sense amplifier, all in a low power 16-pin QFN package. The LTC3733CUHF-1#PBF can be used in a wide range of applications such as notebooks, netbooks, mobile phones and Industrial product.

The LTC3733CUHF-1#PBF uses a step-up current mode control architecture to provide accurate and reliable output voltage and current regulation independent of line and loading conditions. The internal oscillator runs at a constant frequency and synchronizes to an external clock for applications requiring synchronization to an external system clock. The output voltage is regulated by controlling the peak inductor current with the device’s internal oscillator frequency. When the device senses a load current, it lowers the peak inductor current to decrease the output voltage corresponding to the load current. Output voltage can be programmed from 0.3V up to 5.5V using the device’s internal low voltage programming pin which can be used to set the output voltage.

The LTC3733CUHF-1#PBF features a wide range of operating modes including skip mode and burst mode at light loads. Burst mode is a feature where the device is completely shut down when the load current is low and is only enabled during a valid load step. This feature is helpful in achieving very low power dissipation and high efficiency operations. In skip mode, the oscillator frequency is changed to reduce the power dissipation caused by unstable loads.

The LTC3733CUHF-1#PBF also offers extensive protections to protect the device from potentially damaging conditions. The device features over current protection, short circuit protection, over voltage protection, over temperature protection and thermal shutdown. The intuitive user interface offers accurate voltage programming and monitoring. The device also features a power-ok pin for reporting output voltage status to the system.

In summary, the LTC3733CUHF-1#PBF is a step-up current mode DC-DC controller IC suitable for applications requiring extreme accuracy and very long periods of battery operation in portable electronics. The device features low voltage programming pins which can be used to set the required output voltage and offers several operating modes including skip mode and burst mode operation. It also features several protection features to protect the device against damage. The intuitive user interface makes it easy to operate and provides accurate voltage programming and monitoring.

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