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OCP8122A Datasheet(PDF) 1 Page - Shanghai Orient-Chip Technology Co.,LTD. |
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OCP8122A Datasheet(HTML) 1 Page - Shanghai Orient-Chip Technology Co.,LTD. |
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1 / 3 page  Dual-Channel high Power LED Controller with DC-DC Converter For Large LCD or 3D Display Panels Page1 - 3 Rev. 1.3 Feb .27, 2018 OCP8122A 源于灿瑞 磁传天下 ◼ General Description The OCP8122A is dual channel LED driver controller IC which loads the boost DC-DC controller and the constant current control of LED driver designed to build LED backlight for 3D LCD display mode large-size LCD TV application. The OCP8122A provides two independently controlled LED drivers to achieve optimum efficiency. The drive outputs are phase-shifted by 180 degree to minimize current ripple in high power applications. The OCP8122A provides independent PWM dimming function for each channel and common analog dimming control for both channels. It provides system design flexibility for LCD-TV with local dimming or 3D display mode. The OCP8122A can be configured for Master-Slave operation to support multi-channel applications. Synchronization is achieved by a proprietary single-wire interface which minimizes system components. The OCP8122A provides the over-voltage protection (OVP), Power MOSFET over-current protection (OCP), Output to ground short-circuit protection, output over load protection, Soft-Start (SS), under-voltage lock-out (UVLO), limited current condition (LCC) protection, thermal shutdown protection (TSD). A soft-start feature is provided to minimize in-rush current during start-up. The OCP8122A is available in SSOP-24L and SOP-24L package, and it is RoHS compliant and 100% lead Pb-free. Operating temperature range of the OCP8122A is from -40°C to 85°C. ◼ Features ⚫ Wide Supply Voltage Range: 8.0V ~ 25V ⚫ Dual Channel DC-DC Controller ⚫ Drives One String of High Power LEDs per Channel ⚫ Number of LEDs in series limited by external MOSFETs rating ⚫ 180 degree phase shift drive output between the two channel ⚫ Independent PWM dimming control for each channel ⚫ Common Analog Dimming for two channel ⚫ Constant Operation Frequency ⚫ Operation Frequency Synchronization ⚫ External Power MOSFET Over-Current Protection ⚫ External enable control ⚫ Integrated high frequency oscillator ⚫ Over-voltage protection ⚫ Output to Return Short-circuit Protection ⚫ Output to Ground Short-circuit Protection ⚫ Output Over-Load Protection ⚫ Limited Current Condition Protection ⚫ Low in-rush current soft-start function ⚫ Under-voltage lock-out ⚫ Thermal shutdown ⚫ Fault Status Output ⚫ Low Standby current ⚫ TA= -40 ~ 85 ℃ ⚫ Available in SSOP-24L and SOP-24L Package ◼ Applications ⚫ LCD White LED Backlighting ⚫ LCD TVs ⚫ Automotive and Infotainment Displays ⚫ 3D Mode Display LCD Panel |
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