Tag: LED Circuit

We can use boost converter such as TPS61160/1 with a 40V rated integrated switch FET to drive up to 10 LEDs in series. We can use it to reduce output ripple, improve conversion efficiency, and allows for the use of small external component. The external sensor resistor Rset is set on the default white LED current with feedback voltage is […]

This is a high-brightness LED-driver circuit. To provide a constant-voltage output we usually use DC/DC regulators. But constant-current output is the one that is needed in LED application. To provide a constant-current output, we can use this circuit. Here is the schematic diagram of high-brightness LED-driver circuit : This circuit uses R1 to sense the LED current. The TPS40211 is […]

This is a discrete high current switch mode LED driver circuit. The basics of this circuit is a buck-converter principle. The efficiency of this circuit is 80 to 90 %. This circuit can be applied on automotive lighting applications. The advantages of this circuit are low component and low cost. Here is the circuit: The voltage input range of this […]

This is a wide input-voltage range high-power LED driver circuit. This circuit based on a buck/boost converter controller regulates current to a white LED. This circuit can be used to replace incandescent bulbs, it efficiently match the LEDs to available power sources such as electrical systems car, batteries, etc. It also can used to control and regulate the LED output […]