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RT6010 Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT6010 Datasheet(HTML) 1 Page - Richtek Technology Corporation |
1 / 13 page RT6010 ® DS6010-00 March 2012 www.richtek.com 1 Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. © Ordering Information Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. Dual Channel High Efficiency and High Accuracy Average Current Control LED Backlight Buck Controller General Description The RT6010 is a dual channel high accuracy average current control LED backlight buck controller for 2 LED strings w/ o LED binning. Dual MOSFET drivers are specifically designed to drive two power N-MOSFETs in an asynchronous buck converter topology. The controller provides variable LED current control by adjusting the CS resistor value for digital and linear dimming. The controller operates with T1/T2Average Current Control (T2C) topology to provide high accuracy ±3%. The controller also provides high efficiency (higher than 95%) under proper setting without LED binning. The controller provides VIN from 8V to 450V. It is preferred to operate the controller under a current ripple of < 30% average current and about 85% duty to optimize the performance. The RT6010 can be easily connected in series by master/ slave synchronization for multiple channel, even for more than 6-CH. The controller provides SPD (Smart Phase Shift Dimming) that is easily implemented to synchronize master and slave ICs. The controller provides both analog and PWM dimming. The RT6010 automatically detects LED bar open, LED bar short to VIN, and LED bar short to GND to prevent VOUT from over/under voltage damages. The controller also outputs fault signal with programmable delay to previous power stage, such as ACDC controller. Features Fast Average Current Control T 2C (T1/T2 Average Current Control) Dual MOSFET Drives for Asynchronous Buck Topology Provide High Efficiency > 95% and High Accuracy ±±±±±3% Channel to Channel Variation Provide LED w/o Binning Programmable PWM Constant Off Time Support both PWM and Analog Dimming PWM Dimming Duty Down to 1% OVP for Bar Short with VIN UVP for Bar Open/Short to GND with programmable Fault Delay Support SPD (Smart Phase Shift Dimming) for Multiple Channel Dimming Solution VIN POR Detection with EN Pin to Prevent Malfunction SOP-16 Package RoHS Compliant and Halogen Free Applications LCD TV, MNT Display Backlight DC/DC or ACDC LEDDriver Application General Purpose Constant Current Source LED Signage and Display Architectural and Decorative LED Lighting LED Street Lighting Pin Configurations (TOP VIEW) SOP-16 VSS PWM_OUT EN RT_OUT CS2 GATE2 GATE1 VCC DIM/PWM_IN RT D_OSC F_DELAY FAULT NC CS1 DPS 6 7 8 4 5 2 3 16 13 15 14 12 9 11 10 Package Type S :SOP-16 RT6010 Lead Plating System G : Green (Halogen Free and Pb Free) |
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