LED driver capable of setting light intensity with short waveform input signals!
The "RT8H164C" is a 1-channel step-down LED driver. Dimming is possible by inputting a short waveform to the dimming terminal (DIM) and adjusting its duty cycle, and the LED current can be freely set using an external current setting resistor. Another significant feature is the ability to regenerate energy through an externally connected inductor, which helps save power consumption. Additionally, it is equipped with a UVLO (Under Voltage Lock Out) function that stops operation when a drop in power supply voltage is detected, as well as an overheat protection function that stops operation when a certain temperature is exceeded.
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basic information
□Features ● UVLO function... Detects when VCC is approximately 4V or lower. ● Dimming function via signal input to the DIM terminal ● Operating voltage range: 4.5 to 37V ● Thermal protection function ● Off-time setting possible by connecting a capacitor and resistor to the CT terminal ● Compact surface-mount package (SC-74; 2.8mm × 2.8mm) □Similar Products ● LED driver circuit 'RT8H094C' → The dimming method differs from RT8H164C, and instead of a DIM terminal, it has a function that allows the built-in power supply to be set to below 0.2V. ● LED driver circuit 'RT8H084C' → The dimming method is similar to RT8H094C. The UVLO threshold differs from the above two models, detecting when VCC is approximately 6.5V or lower.
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●LED driving circuit
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Company information
Isahaya Electronics began production of small signal transistors in 1973 and has evolved its semiconductor technology into design technologies for gate drivers and DC/DC converters. In recent years, the company has also focused on developing high-efficiency, high-power-factor power supply technologies to contribute to carbon neutrality. (Three-phase PFC, 1500V input compatible DC/DC converters, bidirectional converters, etc.) Meanwhile, to meet diverse needs, small signal transistors have also evolved with enhanced functionality and integration, expanding the lineup of high-voltage, high-current transistors, MOSFETs, and analog ICs.