HV9910BNG-G Microchip

HV9910B Universal High-Brightness LED Driver Features Description Switch mode controller for single switch LED drivers HV9910B is an open loop, current mode control, LED Enhanced drop-in replacement to the HV9910 driver IC. This IC can be programmed to operate in Open loop peak current controller either a constant frequency or constant off-time mode. It includes an 8.0 - 450V linear regulator which allows it Internal 8.0 to 450V linear regulator to work from a wide range of input voltages without the Constant frequency or constant off-time operation need for an external low voltage supply. HV9910B Linear and PWM dimming capability includes a PWM-dimming input that can accept an Requires few external components for operation external control signal with a duty ratio of 0 - 100% and a frequency of up to a few kilohertz. It also includes a 0 Applications - 250mV linear dimming input which can be used for lin- ear dimming of the LED current. DC/DC or AC/DC LED driver applications RGB backlighting LED driver HV9910B is ideally suited for buck LED drivers. Since Back lighting of flat panel displays the HV9910B operates in open loop current mode con- trol, the controller achieves good output current regula- General purpose constant current source tion without the need for any loop compensation. PWM Signage and decorative LED lighting dimming response is limited only by the rate of rise and Chargers fall of the inductor current, enabling very fast rise and fall times. HV9910B requires only three external com- ponents, apart from the power stage, to produce a con- trolled LED current. This makes HV9910B an ideal solution for low cost LED drivers. 2015 Microchip Technology Inc. DS20005344A-page 1HV9910B Package Type VIN 1 16 NC NC 2 15 NC 14 NC 3 RT 13 CS 4 LD 8 12 VDD VIN 1 RT GND 5 CS 2 7 11 NC LD NC 6 6 GND 3 VDD NC 7 10 NC GATE 4 5 PWMD GATE 8 9 PWMD 8-Lead SOIC 16-Lead SOIC See Table 2-1 for pin information Typical Application Circuit C IN C O D1 L1 C DD VIN VDD HV9910B LD GATE Q1 PWMD CS RT GND R CS R T DS20005344A-page 2 2015 Microchip Technology Inc.