LP38693SDX-1.8

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The LP38693SDX-1.8 is a linear voltage regulator typically used in mobile computer applications. It is a synchronous buck-boost switching regulator specifically designed to provide adjustable output voltage for the Lithium-Ion Polymer Battery (LiPo). As an advanced voltage regulator, the LP38693SDX-1.8 offers superior performance, low power consumption, and a wide input voltage range.

The LP38693SDX-1.8 is a monolithic integrated circuit which combines a power switch and a voltage regulator. It consists of an on-chip pulse-width modulation (PWM) controller, an adjustable output voltage, and a current-mode buck-boost control technology. The device provides input charging, discharging, and storage control functions, as well as various protection functions like over-voltage protection, low-voltage protection, overheating protection, and under-voltage lock-out.

The LP38693SDX-1.8 is designed to output adjustable voltages up to 1.8V with up to 3A load. It provides a programmable, low dropout regulator to reduce input voltage and current regulation losses. This device also integrates a dual-mode robust switching frequency control technique, which allows for rapid response to load transients and eliminates the need for external frequency compensation.

The LP38693SDX-1.8 is able to accurately regulate the output voltage and switch modes the efficiently to maintain the desired voltage and current profile. The output voltage is set by a single external resistor and can be adjusted over the entire 0.75V to 1.8V range. It features a 2-phase, pulse-width modulation (PWM) power converter with 225kHz switching frequency and integrated FETs and coil, enabling fast current-mode control of buck or boost outputs.

The LP38693SDX-1.8 has wide input voltage range from 4V to 15V and supports automatic buck-boost operation. Its adjustable output voltage feature offers greater flexibility in applications and reduces the complexities of multiple buck-boost outputs. This device has an internal soft-start feature, which allows for a slower startup and lower inrush current. It features a precise voltage and current loop current control for reduced output voltage ripple.

The LP38693SDX-1.8 is highly efficient with low power consumption, providing up to 97.5% efficiency while consuming less than 30mW (without switching). It offers over-temperature protection, which protects the device from extreme operating temperatures, and a variety of enable, reset and output status signals. The device offers an adjustable frequency synchronization range of 250kHz to 1.2MHz, which can reduce EMI and other spurious noises by synchronizing the switching frequency with the local environment noise.

The LP38693SDX-1.8 is the ideal solution for mobile computer, LED driver, and battery applications where adjustable output voltage and high efficiency are required. It is a robust, cost-effective, and reliable linear voltage regulator, providing excellent performance and a wide input voltage range.

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