MP3388SGR-Z

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PMIC - LED Drivers:

The MP3388SGR-Z LED Driver is gaining popularity among system designers as a reliable solution for LED-based designs. It provides a wide range of features to accommodate a variety of different LED applications, from general lighting to automotive back-lighting.

The MP3388SGR-Z is a general-purpose LED Driver designed to drive a wide range of LEDs. It can be driven in a variety of topologies and configurations, including step-up, step-down, and constant current. It can be used in a variety of applications, such as LED TVs, LED monitors, LED lighting, automotive LED lighting, and LED signages.

The MP3388SGR-Z operates in constant current mode, providing a reliable and consistent light output. In addition, it has a wide input voltage range, from 0.6V~5.5V, for both AC and DC inputs. The output current is programmable from 1mA~75mA, with a maximum output voltage of 8V, and the total output power can reach up to 600mW. It also supports current sharing and voltage monitoring features, making it an ideal solution for designers who require precise control of their LED system.

The device features an integrated Device State Descriptor and provides power on reset (POR) and over-voltage protection (OVP) for added protection. It also includes a soft-start feature to reduce the inrush current upon power-up, as well as a reverse-leakage protection feature. Furthermore, the MP3388SGR-Z supports analog current dimming and supports dimming ratios up to 99%.

In terms of the working principle, the MP3388SGR-Z is a DC-DC converter based on a boost-flyback topology. It works by using an inductor and a switch to transfer energy from the input voltage to the output voltage. An internal error amplifier circuit is used to control the output voltage and current, providing precise control over the output.

Besides the MP3388SGR-Z, Monolithic Power Systems (MPS) also offers a family of LED driver products suitable for a variety of applications. These include the MP3314ETG and the MP3322EVD, which feature step-down and step-up topologies, respectively. For automotive applications, MPS also offers the MP3343EGX, a four-channel LED driver designed to drive two LED strings with two separate PWM dimming signals.

In summary, the MP3388SGR-Z is an excellent LED driver for applications needing precise output control. It provides a wide range of features and is specifically designed for LED applications. It has a wide input voltage range, a programmable output current, and an integrated Device State Descriptor for system protection. The MP3388SGR-Z operates on a boost-flyback topology for efficient and reliable power transfer.

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