Have you added the input bulk capacitor? What is connected to the LED connection. It could also be the current rating on the inductor. The circuit is very simple. The HVB can be programmed to operate in either a constant frequency or constant off-time mode. For pricing and availability, contact Microchip Local Sales.
|Date Added:||27 October 2006|
|File Size:||6.15 Mb|
|Operating Systems:||Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X|
|Price:||Free* [*Free Regsitration Required]|
Generic 5P HVB HV Supertex LED driver SOP-8PIN NEW: : Car & Motorbike
Media New media New comments Search media. I can easily be wrong also.
PWM dimming response is limited only by the rate of rise and fall of the inductor current, enabling very fast rise and fall times. Forums New posts Search forums. IoT – Internet of Things. The HVBDB3 can be configured to operate in either a constant frequency mode for driving a single LED or in a constant off-time les for driving two In Production View Datasheet Features: I don’t know why.
Also, double check your connections. The power conversion stage of the Lex consists of a diode bridge rectifier, followed by a current-controlled buck The HVB requires only three external components apart from the power stage to produce a controlled LED current making it an ideal solution for low cost LED drivers.
Off-Line, High Brightness, LED Driver Demo Board
What is connected to the LED connection. Component Identification Started by frisky2good Yesterday at 6: Buy lsd the Microchip Store. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets.
The most obvious problems will be due to incorrect wiring and defective or missing parts.
Can you show a photo of your circuit? Welcome to our site! It also includes a 0 – mV linear oed input which can be used for linear dimming of the LED current. Click here to register now. It could also be the current rating on the inductor. Thread starter aminbehravan Start date Jul 9, The HVB can be programmed to operate in either a constant frequency or constant off-time mode. Have you added the input bulk capacitor? View attachment but when i connect it to V this circuit not work just LEDs make a little blink and turn off.
To participate h9910b need to register. It includes an 8. Analog Simulation – HVB.