OB3671AMP

OB3671A 100/120Hz current ripple removing controller GENERAL DESCRIPTION FEATURES OB3671A is a high performance controller with advanced features to provide high efficiency control for driving external NMOSFET to remove/suppress the 100/120 Hz current ripple for LED lighting application. It controls the NMOSFET drain voltage to minimize power dissipation on the NMOSFET while suppressing current ripple. OB3671A allows user to set up maximum LED current by the sensing resistor between the source of the NMOSFET and ground. It also allows user to set up the maximum cathode voltage of LED string via a resistor between the drain of the NMOSFET and LEDN pin. OB3671A offers comprehensive protection coverage with features including LED open loop protection, LED short circuit protection, current limiting, VCC under voltage lockout (UVLO), comp floating protection, over temperature protection etc. OB3671A supports current dimming from 100% to 5%. OB3671A is offered in SOT23-6 package.  Controller for 100/120Hz current ripple removal/suppress  Programmable maximum LED current  Built in VCC voltage clamping  Supports wide dimming range: 5%-100%  Supports hot-plug  LED short protection with programmable threshold  VCC under voltage lockout (UVLO)  Comp floating protection  Over temperature protection  SOT23-6 Package APPLICATIONS  LED lighting TYPICAL APPLICATION OB3671A + ©On-Bright Electronics VCC LEDN GND CS CMP GT Confidential -1- Preliminary Datasheet OB_DOC_DS_3671A00 OB3671A 100/120Hz current ripple removing controller GENERAL INFORMATION Recommended Operating Condition Symbol Parameter Range VCC VCC Supply Voltage 7V to 14V Pin Configuration Pin Configuration Ordering Information Part Number Description OB3671AMP SOT23-6, Pb-free in T&R Note: All Devices are offered in Pb-free Package if Absolute Maximum Ratings Parameter VCC Voltage GT Voltage CS Input Voltage COMP Input Voltage LEDN Input Voltage Min/Max Operating Junction Temperature TJ Operating Ambient Temperature TA Min/Max Storage Temperature Tstg Lead Temperature (Soldering, 10secs) not Value -0.3 V to 20V -0.3 V to 20V -0.3 V to 7V -0.3 V to 7V -0.3 V to 80V -40 to 150 ℃ -40 to 85 ℃ -55 to 150 ℃ 260 ℃ Note: Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute maximum-rated conditions for extended periods may affect device reliability. otherwise noted. Package Dissipation Rating Package RθJA (℃/W) SOT23-6 200 ‘ OB3671A 100/120Hz current ripple removing controller X Package M:SOT23-6 X Package Pb free P:Pb free Marking Information 671YWW . ZZZA s Y:Year Code WW:Week Code(01-52) ZZZ: Lot code A:Character code s: Internal code ©On-Bright Electronics Confidential -2- Preliminary Datasheet OB_DOC_DS_3671A00 OB3671A 100/120Hz current ripple removing controller Marking Information LEDN VCC GND OB3671A CS GT CMP TERMINAL ASSIGNMENTS Pin Num Pin Name I/O Description 1 VCC P Power Supply Input 2 GND P Ground 3 CMP I/O Loop Compensation Terminal 4 GT O MOSFET Gate Terminal 5 CS I Current Sensing Terminal 6 LEDN I MOSFET Drain Terminal/LED Negative Terminal ©On-Bright Electronics Confidential -3- Preliminary Datasheet OB_DOC_DS_3671A00 OB3671A 100/120Hz current ripple removing controller PACKAGE MECHANICAL DATA 6-Pin Plastic SOT (SOT23-6) Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 1.000 1.450 0.039 0.057 A1 0.000 0.150 0.000 0.006 A2 0.900 1.300 0.035 0.051 b 0.300 0.500 0.012 0.020 c 0.080 0.220 0.003 0.009 D 2.800 3.020 0.110 0.119 E 1.500 1.726 0.059 0.068 E1 2.600 3.000 0.102 0.118 e 0.950 (BSC) 0.037 (BSC) e1 1.800 2.000 0.071 0.079 L 0.300 0.600 0.012 0.024 θ 0º 8º 0º 8º ©On-Bright Electronics Confidential -7- Preliminary Datasheet OB_DOC_DS_3671A00 OB3671A 100/120Hz current ripple removing controller IMPORTANT NOTICE RIGHT TO MAKE CHANGES On-Bright Electronics Corp. reserves the right to make corrections, modifications, enhancements, improvements and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. WARRANTY INFORMATION On-Bright Electronics Corp. warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with its standard warranty. Testing and other quality control techniques are used to the extent it deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. On-Bright Electronics Corp. assumes no liability for application assistance or customer product design. Customers are responsible for their products and applications using On-Bright’s components, data sheet and application notes. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. LIFE SUPPORT On-Bright Electronics Corp.’s products are not designed to be used as components in devices intended to support or sustain human life. On-bright Electronics Corp. will not be held liable for any damages or claims resulting from the use of its products in medical applications. MILITARY On-Bright Electronics Corp.’s products are not designed for use in military applications. On-Bright Electronics Corp. will not be held liable for any damages or claims resulting from the use of its products in military applications. ©On-Bright Electronics Confidential -8- Preliminary Datasheet OB_DOC_DS_3671A00