YB1696 is a switch power supply chip produced by Yobon. It supports 5V and adjustable output versions. The adjustable version output voltage range is 1.23V to 28V, with a maximum deviation of +4%. The operating frequency is 150KHz. This chip has over-temperature protection and over-current protection functions.
YB1680 is a high efficiency synchronous step-down converter from Yobon company, and it is ideal for powering portable equipment that runs from a single cell lithium-Ion (Li+) battery
The YB1521 is a high power step-up DC-DC converter and WLED driver from Yobon that operates as a current source to drive up to 45 white LEDs (3S15P) in parallel / series configuration from a 5V system rail. The YB1521 is a fixed frequency of 1.3MHz, allowing the use of tiny low profile inductors and capacitors to minimize footprint and cost in space consideration applications for cellular phone backlighting or other hand held equipment.
