BD92111F-GE2 ROHM

Datasheet PFC Direct current resonance type White LED Driver for Large LCD BD92111F General Description Key Specifications BD92111F is a current resonance type LED Driver with Operating Power Supply Voltage Range: frequency-controlled LED current. It can connect to PFC 8.0V to 18.0V directly and can use half-bridge structure reducing the Minimum Oscillator Frequency: 65.8kHz number of external components. (RRT=22k,RADJ=36k,VFB=3.2V) It incorporates some protection functions against fault Operating Current: 2.3mA (Typ) conditions such as Over-Voltage Protection and LED Operating Temperature Range: -40C to +85C Open Detection (IS Low Detection). Package W(Typ) x D(Typ) x H(Max) Features SOP18 11.20mm x 7.80mm x 2.01mm 20V High Rating Process Pin pitch 1.27mm 1 Channel Push-pull Control Current and Voltage Feedback by Driving Frequency Adjustable Soft Start Adjustable Timer Latch Under-Voltage Detection for ICs Power Line Output Over-Voltage Protection Output Error Signal from FAIL Terminal Shift to Save Mode by STB Terminal Burst Control by External PWM Signal Applications TV, Computer Display, LCD Backlighting. Figure. 1 SOP18 Typical Application Circuit < Primary Side > VCC VCC GND GND PDIM PDIM PVIN STB ON/OFF GND PWM PWMIN ERR FAIL T1 CSS CSDON CFBVS RFBVS RADJ CFBIS RFBIS RS CCP RRT < Secondary Side > Figure. 2 Typical Application Circuit(s) Product structure : Silicon monolithic integrated circuit This product has no designed protection against radioactive rays . www.rohm.com TSZ02201-0F5F0C100090-1-2 2016 ROHM Co., Ltd. All rights reserved. 1/24 TSZ22111 14 001 31.Jan.2016 Rev.001 BD92111F Contents General Description .................................................................................................................................................... 1 Features ....................................................................................................................................................................... 1 Applications ................................................................................................................................................................ 1 Key Specifications ...................................................................................................................................................... 1 Package ....................................................................................................................................................................... 1 Typical Application Circuit ......................................................................................................................................... 1 Absolute Maximum Ratings ....................................................................................................................................... 3 Recommended Operating Conditions ...................................................................................................................... 3 External Components Recommended Range .......................................................................................................... 3 Pin Configuration ........................................................................................................................................................ 3 Physical Dimension and Marking Diagram .............................................................................................................. 3 Electrical Characteristics ........................................................................................................................................... 4 Pin Description............................................................................................................................................................ 6 I/O Equivalent Circuits................................................................................................................................................ 7 Block Diagram ............................................................................................................................................................. 8 Typical Performance Curves ..................................................................................................................................... 9 Pin Function Description ......................................................................................................................................... 10 Detection Condition List of the Protection Functions .......................................................................................... 15 Behavior List of the Protect Function .................................................................................................................... 15 Application Example ................................................................................................................................................ 16 Timing Chart .............................................................................................................................................................. 17 Operational Notes ..................................................................................................................................................... 20 Ordering Information ................................................................................................................................................ 22 Marking Diagrams ..................................................................................................................................................... 22 Physical Dimension, Tape and Reel Information ................................................................................................... 23 Revision History ....................................................................................................................................................... 24 www.rohm.com TSZ02201-0F5F0C100090-1-2 2016 ROHM Co., Ltd. All rights reserved. 2/24 TSZ22111 15 001 31.Jan.2016 Rev.001