R-78B3.3-1.5L

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DC DC converters are becoming increasingly important components in system design. The R-78B3.3-1.5L is a low-power, high-efficiency non-inverting switching DC-DC converter that offers designers a wide range of options to choose from. This device provides an impressive combination of features for both mobile and stationary applications.

The R-78B3.3-1.5L device is a non-inverting switching step-down DC-DC converter that can operate as either a buck regulator or a buck-boost regulator. This converter has a wide input cost voltage range of 4.5V to 38V and can be driven directly by low voltage sources. The output current can provide up to 0.8A for a single output configuration or up to 1.5A for a dual output configuration. The output voltage can be adjusted from 0.9V to 3.3V, or 1.2V to 5.5V depending on which mode the converter is used in.

The R-78B3.3-1.5L device is a cost effective solution for mobile or stationary applications that require an adjustable output voltage such as automotive and industrial systems. It offers superior efficiency, up to 95% for single output and up to 94% for dual output, and features a wide load range of both resistive and capacitive loads. The integrated protection features include over temperature protection, module disruption protection, and input, output and OCP short-circuit protection.

The operating principle of the R-78B3.3-1.5L device is based on an innovative synchronous rectification technique. This technique is composed of an outer loop control circuit and an inner loop control circuit. The outer loop control circuit is responsible for regulating the output voltage by detecting the output voltage and adjusting the duty cycle of the PWM pulses accordingly. The inner loop control circuit is responsible for generating the PWM pulses based on the input voltage and the desired output voltage.

In addition to this, the R-78B3.3-1.5L device includes several design features that make it ideal for a wide range of applications. It is equipped with an on-board sync FET that reduces current consumption, a high-speed switching frequency of up to 3MHz that helps minimise external components, and a low-on-resistance P-Channel MOSFET that is designed to reduce internal losses. It also features an over-voltage protection circuit to protect the output voltage from overvoltage and transient issues. This ensures the converter is robust and reliable in a wide range of operating conditions.

The R-78B3.3-1.5L device is suitable for a wide range of mobile and stationary applications such as portable electronics, automotive systems, and industrial equipment. This device is capable of delivering highly efficient power conversion for any application with an adjustable output voltage requirement. Its wide input cost voltage range, ease of use, and superior efficiency make it an ideal solution for cost-efficient and reliable power conversion.

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