OB3652YCPA

OB3652x Series High Precision Offline LED Power Switch FEATURES OB3652x is primary side control offline LED lighting power switch with very low operation current which can achieve accurate LED current for an isolated lighting application in a single stage converter. It significantly simplifies the LED lighting system design by eliminating the secondary side feedback components and the opto-coupler, and also the auxiliary winding inductance. A HV 600V power switch is also integrated into the device. The LED current can be adjusted externally by the sense resistor Rs at CS pin and high precision constant current regulation is realized. OB3652x offers comprehensive protection coverage with auto-recovery features including open loop protection, short circuit protection, cycle-by-cycle current limiting, built-in leading edge blanking, VDD under voltage lockout (UVLO), latched over temperature protection (OTP), etc.  High precision Constant Current Regulation at Universal AC input  Primary-side Sensing and Regulation Without TL431 and Opto-coupler  Sense and supply without auxiliary winding inductance  Low System Cost and High Efficiency  Low operation current  Programmable CC Regulation  Built-in Primary winding inductance compensation  Built-in line compensation  Short Circuit Protection  Open Loop Protection  Cycle-by-Cycle Current Limiting  Built-in Leading Edge Blanking (LEB)  VDD Under Voltage Lockout with Hysteresis  Latched over temperature protection (OTP) ia l to 宝 利 金 GENERAL DESCRIPTION APPLICATIONS OB3652x is offered in SOP-8 or DIP8 packages. on fid en t  LED lighting TYPICAL APPLICATION ~ AC VLED NP NS + CO O n- Br ig h tc + ©On-Bright Electronics CS GND NC GND VDD Drain SW Drain OB3652x Confidential -1- Datasheet OB_DOC_DS_3652XA4 OB3652x Series High Precision Offline LED Power Switch GENERAL INFORMATION Pin Configuration 1 8 GND CS 1 8 GND NC 2 7 GND NC 2 7 GND VDD 3 6 Drain VDD 3 6 SW 4 5 Drain SW 4 宝 利 5 Drain Pin map for DIP-8 package Absolute Maximum Ratings Parameter Value VDD Voltage -0.3 to 20V OB3652M/S -0.3 to 650V DRAIN OB3652N/Y/P -0.3 to 600V Voltage OB3652NCP-V -0.3 to 700V CS Input Voltage -0.3 to 7V SW Input Voltage -0.3 to 20V Min/Max Operating Junction -40 to 150 ℃ Temperature TJ Operating Ambient -40 to 85 ℃ Temperature TA Min/Max Storage -55 to 150 ℃ Temperature Tstg Lead Temperature 260 ℃ (Soldering, 10secs) Note: Stresses beyond those listed under “absolute tc on fid en t ia l Ordering Information Part Number Description OB3652SCP-H 8 Pin SOP, Pb free in Tube OB3652SCPA-H 8 Pin SOP, Pb free in T&R OB3652MCP-H 8 Pin SOP, Pb free in Tube OB3652MCPA-H 8 Pin SOP, Pb free in T&R OB3652NAP 8 Pin DIP, Pb free in Tube OB3652NCP 8 Pin SOP, Pb free in Tube OB3652NCPA 8 Pin SOP, Pb free in T&R OB3652YCP 8 Pin SOP, Pb free in Tube OB3652YCPA 8 Pin SOP, Pb free in T&R OB3652PAP 8 Pin DIP, Pb free in Tube OB3652NCP-V 8 Pin SOP, Pb free in Tube OB3652NCPA-V 8 Pin SOP, Pb free in T&R Note: All Devices are offered in Pb-free Package if not otherwise noted. Drain to Pin map for SOP-8 package 金 CS Package Dissipation Rating Package RθJA (℃/W) SOP-8 90 DIP-8 75 ig h 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. O n- Br Recommended Operating Condition Symbol Parameter Range VDD VDD Supply Voltage 8 to 10.5V OB3652x High Precision Offline LED Power Switch ©On-Bright Electronics X X X - X Package Package Pb free C:SOP8 A:DIP8 P:Pb-free Confidential -2- Packing BVdss Blank:Tube H: 650V A: Tape/Reel V: 700V Datasheet OB_DOC_DS_3652XA4 OB3652x Series High Precision Offline LED Power Switch Marking Information 金 YWWZZZ OB3652MCP 宝 利 s Y: Year Code WW: Week Code (01-52) ZZZ:Lot Code C: SOP8 to P:Pb-free Package Br ig h tc on fid en t ia l S: Internal Code(Optional) O n- YWWZZZ OB3652SCP s Y: Year Code WW: Week Code (01-52) ZZZ:Lot Code C: SOP8 P:Pb-free Package S: Internal Code(Optional) ©On-Bright Electronics Confidential -3- Datasheet OB_DOC_DS_3652XA4 OB3652x Series High Precision Offline LED Power Switch TERMINAL ASSIGNMENTS Pin Num. Pin Name I/O Description 1 CS I 2 NC 3 VDD P Power supply Input 4 SW I MOSFET Source Terminal 5,6 DRAIN I MOSFET Drain Terminal 7 GND P Power Ground, suggest to be left floating with no pad in PCB layout. 8 GND P Power Ground Current sensing terminal 90Vac~264Vac Input 220Vac±20% Input 3.1W 3.5W on fid en t OB3652MCP OB3652NAP OB3652NCP OB3652YCP OB3652PAP OB3652NCP-V 宝 利 to Product ia l Output Power Table OB3652SCP 金 No Connection 5.5W 5.8W 9W 13W 6.7W 7.3W 9W 12W 12.5W 18W 8W 12W O n- Br ig h tc Notes: Maximum practical continuous power in an open frame design with sufficient drain pattern as a heat sink, at 50℃ ambient and 60℃ temperature rise. Higher output power is possible with extra added heat sink or air circulation to reduce thermal resistance. ©On-Bright Electronics Confidential -4- Datasheet OB_DOC_DS_3652XA4 OB3652x Series High Precision Offline LED Power Switch O n- Br ig h tc on fid en t ia l to 宝 利 金 BLOCK DIAGRAM ©On-Bright Electronics Confidential -5- Datasheet OB_DOC_DS_3652XA4 OB3652x Series High Precision Offline LED Power Switch ELECTRICAL CHARACTERISTICS (TA = 25℃, VDD=7.5V, if not otherwise noted) Symbol Parameter Test Conditions Min Typ. Max Unit Supply Voltage (VDD) Section Start up current VDD=UVLO(OFF)-1V 100 150 I op Operation current VDD=7.5V, no loading 190 250 UVLO(OFF) VDD under voltage lockout exit UVLO(ON) VDD under voltage lockout enter VDD_CLAMP VDD CLAMP VDD current 1mA Current Sense Input Section LEB time Vth_ocp Over current threshold Td_oc OCP propagation delay Toff_max Maximum off time Toff_min Minimum off time Ton_max 0.3 us From OCP comparator to gate drive 515 mV 5.5 us Maximum on time 75 us Over temperature protection 150 ℃ on fid en t ia l us BVdss(V) MOSFET Drain-Source Breakdown Voltage Typ. Max tc Min ig h OB3652NAP V 600 Product OB3652MCP 10.5 ns Parameter OB3652SCP V 100 OTP Section OTP 6.5 485 500 to TLEB uA V 宝 利 9 uA 金 I start-up 650 650 600 600 OB3652YCP 600 Br OB3652NCP 600 OB3652NCP-V 700 O n- OB3652PAP ©On-Bright Electronics Confidential -6- Datasheet OB_DOC_DS_3652XA4 OB3652x Series High Precision Offline LED Power Switch CHARACTERIZATION PLOTS UVLO(ON) vs Temperature UVLO(OFF) vs Temperature 10.0 6.7 6.3 5.9 5.5 9.6 9.2 8.8 金 7.1 8.4 8.0 -40 -10 20 50 80 -40 110 140 -10 Ivdd_startup(uA) vs Tem perature 50 80 110 140 250 130 110 230 Iop(uA) 150 210 190 ia l 90 70 to Iop(uA) vs Tem perature 170 150 50 -40 -10 20 50 80 110 -40 140 on fid en t Ivdd_startup(uA) 20 Temperature(℃) Temperature(℃) -10 Vth_oc vs Temperature 50 80 110 140 110 140 Toff_time vs Temperature 6.0 530 510 tc 490 Toff_time(us) 550 20 Temperature(℃) Temperature(℃) Vth_oc(mv) 宝 利 UVLO(OFF) (V) UVLO(ON)(V) 7.5 470 ig h 450 -40 -10 20 50 80 110 5.8 5.6 5.4 5.2 5.0 140 -40 20 50 80 Temperature(℃) Br Temperature(℃) -10 Vdd(V) vs Ivdd(uA) O n- 300.00 Ivdd(uA) 240.00 180.00 120.00 60.00 0.00 5.5 6.3 7.1 7.9 8.7 9.5 VDD(V) ©On-Bright Electronics Confidential -7- Datasheet OB_DOC_DS_3652XA4 OB3652x Series High Precision Offline LED Power Switch OPERATION DESCRIPTION FSW  宝 利  Start up Control Startup process is realized by charging VDD capacitor. When VDD voltage reaches up to UVLO(OFF), the inner circuit works. An 10.5V (typical) clamp circuit is designed to clamp VDD voltage. At work state, no auxiliary winding inductance is necessary. Figure.1 Drain voltage waveform to Since TDemag is inversely proportional to the inductance, as a result, the product Lp and fsw is constant, thus output current will not change as primary winding inductance changes. Up to ± 10% variation of the primary winding inductance can be compensated. The output LED current is (3) 1 Vthoc Iout  N 4 Rs Where N is the ratio of transformer between primary-side winding and secondary winding. on fid en t ia l  Adjustable CC point In OB3652x, the CC point can be externally adjusted by external current sense resistor Rs at CS pin as illustrated in typical application diagram. The larger Rs is, the smaller CC point is, and vice versa.  Principle of CC Operation For flyback operating in DCM, the output current Iout is given by (1) 1 Iout  L F I  / Vout 2 Where Lp indicates the inductance of primary winding and Ip is the peak current of primary winding. Refer to the equation 1, the change of the primary winding inductance results in the change of the constant output current. To compensate the change from variations of primary winding inductance, the switching frequency is locked by an internal loop such that the switching frequency is 2 SW p Current Sensing and Leading Edge Blanking Cycle-by-Cycle current limiting is offered in OB3652x. The switch current is detected by a sense resistor into the CS pin. An internal leading edge blanking circuit chops off the sensed voltage spike at initial power MOSFET on state.  tc P (2) 2TDemag 金 OB3652x is a primary side control offline LED lighting controller with very low operation current which can achieve accurate LED current for an isolated lighting application in a single stage converter. It significantly simplifies the LED lighting system design by eliminating the secondary side feedback components and the opto-coupler, and also the auxiliary winding inductance. A HV 600V power switch is also integrated into the device. 1 O n- Br ig h  Latched Over Temperature Protection Over temperature protection is offered in OB3652x. When temperature of the device rises over 150℃ (typical), the switching frequency will decrease to half. And the state will be kept until the device restarts. ©On-Bright Electronics Confidential -8- Datasheet OB_DOC_DS_3652XA4 OB3652x Series High Precision Offline LED Power Switch Dimensions In Millimeters Min Max 1.350 1.750 0.050 0.250 1.250 1.650 0.310 0.510 0.100 0.250 4.700 5.150 3.800 4.000 5.800 6.200 1.270 (BSC) 0.400 1.270 0º 8º ig h Symbol tc on fid en t ia l to 宝 利 金 PACKAGE MECHANICAL DATA O n- Br A A1 A2 b c D E E1 e L θ ©On-Bright Electronics Confidential -9- Dimensions In Inches Min Max 0.053 0.069 0.002 0.010 0.049 0.065 0.012 0.020 0.004 0.010 0.185 0.203 0.150 0.157 0.228 0.244 0.050 (BSC) 0.016 0.050 0º 8º Datasheet OB_DOC_DS_3652XA4 OB3652x Series tc on fid en t ia l to 宝 利 金 High Precision Offline LED Power Switch Dimensions In Millimeters Min Max 3.710 5.334 0.381 2.921 4.953 0.350 0.650 1.524 (BSC) 0.200 0.360 9.000 10.160 6.096 7.112 7.320 8.255 2.540 (BSC) 2.921 3.810 7.620 10.920 ig h Symbol O n- Br A A1 A2 B B1 C D E E1 e L E2 ©On-Bright Electronics Confidential - 10 - Dimensions In Inches Min Max 0.146 0.210 0.015 0.115 0.195 0.014 0.026 0.06 (BSC) 0.008 0.014 0.354 0.400 0.240 0.280 0.288 0.325 0.1 (BSC) 0.115 0.150 0.300 0.430 Datasheet OB_DOC_DS_3652XA4 OB3652x Series High Precision Offline LED Power Switch IMPORTANT NOTICE 金 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. to 宝 利 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. ia l 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. O n- Br ig h tc on fid en t 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 - 11 - Datasheet OB_DOC_DS_3652XA4