XC9265A3314R-G

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The XC9265A3314R-G is a 1.5-V DC/DC synchronous buck converter LED driver that is designed for LED lighting applications such as LED TVs, LED billboards, and automotive LED applications. It is a member of the new PMIC - Voltage Regulators - DC DC Switching Regulators product family from Renesas and combines high efficiency, high power density, and low power consumption in a small package. It offers a wide range of output current ranges from 40mA to 400mA and is also designed with a wide input voltage range of 4.5~20V and output voltage range of 1.5-V typical.

The XC9265A3314R- G features an integrally-compensated current−mode control, providing fast transient response and excellent line and load regulation in a very small form-factor. The device utilizes a low−side MOSFET in its power stage, thus eliminating the need for a high−side MOSFET. As a result, only two external components are required for the power stage (Source, Drain, and Gate). It also features a wide operating temperature range of -40°C to +105°C and offers a low quiescent current of 3μA in Shutdown mode.

A major feature of the XC9265A3314R- G is its high efficiency design, thanks to a high-frequency totem pole PFC switch, which is capable of running at frequencies up to 500kHz. This allows the device to achieve efficiencies up to 94%, while maintaining a low output ripple. Other features include output short-circuit protection, thermal-shutdown protection, and over-voltage protection. The device can also be used with a wide range of input voltages, making it suitable for both AC- and DC-input LED lighting applications.

The XC9265A3314R- G incorporates a Type II Current-Mode Control architecture, which is a popular and critical method for controlling any Buck Regulator. As its name implies, it uses a Type II error-amp circuit, which consists of three voltage drops, VBE, VBIAS, and VOUT. These three nodes create a small-signal feedback system for controlling the output voltage. The device employs a unique two-phase synchronous rectification method with controlled valley current, which eliminates the need for an additional pull-up current sense amplifier. This helps the device to achieve high efficiency, while ensuring fast response to line and load regulation.

In conclusion, the XC9265A3314R- G is a highly efficient, high-power density, low-power-consumption LED driver designed to meet the high-speed, high-power requirements of LED lighting applications. It is a member of the PMIC - Voltage Regulators - DC DC Switching Regulators family from Renesas and helps to reduce system cost by only requiring a few external components and no additional pull-up current sense amplifier. The device provides robust protection features such as output short-circuit protection, thermal-shutdown protection, and over-voltage protection, making it an ideal candidate for a wide range of AC- and DC-input LED lighting applications. Finally, its wide operating temperature range and low quiescent current in Shutdown mode make it a good choice for many applications.

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