Transcription of 18-Bit ADC with I2C Interface and Onboard Reference DS
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18-Bit ADC with I2C Interface and Onboard Reference DS
2015 Microchip Technology 1HV9910 BFeatures Switch mode controller for single switch LED drivers Enhanced drop-in replacement to the HV9910 Open loop peak current controller Internal to 450V linear regulator Constant frequency or constant off-time operation Linear and PWM dimming capability Requires few external components for operationApplications DC/DC or AC/DC LED driver applications RGB backlighting LED driver Back lighting of flat panel displays General purpose constant current source Signage and decorative LED lighting ChargersDescriptionHV9910B is an open loop, current mode control, LEDdriver IC. This IC can be programmed to operate ineither a constant frequency or constant off-time includes an - 450V linear regulator which allows itto work from a wide range of input voltages without theneed for an external low voltage supply.
HV9910B DS20005344A-page 6 2015 Microchip Technology Inc. 3.0 APPLICATION INFORMATION HV9910B is optimized to drive buck LED drivers using open-loop, peak current mode control.
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