POWER LED DRIVER CONTROLLER TYPICAL APPLICATION L R Z D F C V REF PVDD VDD AMC7160 GATE D Z C R OSC GND ORDER INFORMATION

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1 DESCRIPTION AMC7160 is a PWM power ED driver control IC. The driving current from few milliamps up to more than 2A that depend on external power MOSFET select. It allows high brightness power ED operating at high efficiency for 85~265V AC power source. Up to 300KHz precision operation frequency that controlled by external Resistor and capacitor. Current sense resistor decides the maximum output current to single ED or a ED string. POWER ED DRIVER CONTROER FEATURES > 90% Efficiency. Controller for Constant Current Power ED Driver Application From a Few ma to >2A ED Driving Current ED String From One to Hundred Diodes. Precision Operation Frequency. SO-8 Package. APPICATIONS PACKAGE PIN OUT AC/DC ED driver ighting P SO-8 (Top View) TYPICA APPICATION 85~265VAC rectified R Z D F C V C IN R T AMC7160 D Z C R C T R ORDER INFORMATION DM SO 8-pin AMC7160DMF (ead Free) Note: 1. All surface-mount packages are available in Tape & Reel. Append the letter T to part number (i.e. AMC7160DMFT). 2. The letter F is marked for ead Free process. Copyright 2005 ADD Microtech Corp. 1 AMC7160_A (F) June 2005

2 Package θ JA ( O C /W ) Derating factor ( mw/ O C ) T A 25 O C POWER DISSIPATION TABE T A 25 O C Power rating (mw) T A =70 O C Power rating (mw) SO Note : Junction Temperature Calculation: T J = T A + (P D x θ JA ). P D : Power Dissipation, T A : Ambient temperature, θ JA : Thermal Resistance-Junction to Ambient The θ JA numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow. BOCK DIAGRAM PIN DESCRIPTION Pin Number Pin Name Pin Function 6 Driver output pin, Connect to power MOSFET gate. 2 Current senses pin. Threshold voltage 450mV V reference voltage. Oscillator timing pin, Connect to via timing resistor and connect to ground via timing capacitor. 8 Input supply Voltage 9V ~ 20V 7 Supply voltage for output stage. 3 Ground 5 P Ground for output stage. Copyright 2005 ADD Microtech Corp. 2 AMC7160_A (F) June 2005

3 ABSOUTE MAXIMUM RATINGS Input Voltage,, Output Voltage, Maximum Junction Temperature, T J Storage Temperature Range ead Temperature (soldering, 10 seconds) -0.3V to 20V -0.3V to 20V 150 O C -40 O C to 150 O C 260 O C Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. RECOMMENDED OPERATING CONDITIONS Parameter Symbol Min Typ Max Unit Supply Voltage VCC 9 20 V Operating free-air temperature range Ta EECTRICA CHARACTERISTI VCC=15V, Ta=25 C. ( Unless otherwise noted) Parameter Symbol Condition Min Typ Max Unit Supply Current I DD VCC=9~20V 4 6 ma Under Voltage ockout V Reference Voltage V I O =1mA V Output Short Circuit Current I RS ma Current Sense Threshold Voltage V VCC- V mv Current Sense Input Bias Current I B ua Delay from Current Sense to Output T O ns Output Rise Time C =500pF ns Output Fall Time C =500pF ns Oscillator Frequency f R=16K, C=1nF KHz Maximum Output Duty Cycle % Discharge Current =2V ma Copyright 2005 ADD Microtech Corp. 3 AMC7160_A (F) June 2005

4 APPICATION INFORMATION In order to reach best performance, following application circuit was suggested. Some components value is adjusted at different AC supply voltage range. Also the inductor valune higly depends on the ED numbers and ED driving current. R Z1 D F AC-IN R Z2 D P1 C V C IN 85~135V AC or 190~265V AC BR Dz C R R T AMC7160 R F MOS C P D P2 C T C F R Bill of Material C.R. No. Q TY Description IC 1 AMC7160 BR 1 Mini Surface Mount Bridge Rectifier (0.8A) C IN 1 E.C Cap:10uF / 450V / -40 ~ 105 R Z1 R Z KΩ/ 0.25W D Z 1 V Z = 20V / 0.5W (1N5250B) C V 1 E.C Cap:10uF / 50V / -40 ~ 105 C R nf/ 50V R T 1 47 KΩ / 0.125W C T pf/ 50V R F Ω/ 0.125W C F 1 1 nf/ 50V D F 1 Super Fast Rectifiers (Reverse Voltage=400V, Forward Current=1.0A) C P 1 AC-IN = 85 ~135 VAC 1500 pf / 500V AC-IN = 190 ~265 VAC 560 pf / 1KV D P1 D P2 2 1N > 2 mh / 400mA 3 ~ 5 EDs 2 mh 6 ~ 8 EDs 3 mh 9 ~ 11 EDs 4 mh 12 ~ 14 EDs 5 mh 15 ~ 17 EDs 6 mh Power MOSFET 1 Power NMOS (IRF840/TO-220) / Need Heat-Sink (Thermal Resistance<6 /W) R 1 AC-IN = 85 ~135 VAC 1.1 Ω / 0.25W AC-IN = 190 ~265 VAC 1.2 Ω / 0.25W I ED = 350 ma Copyright 2005 ADD Microtech Corp. 4 AMC7160_A (F) June 2005

5 PACKAGE 8-Pin Plastic S.O.I.C. A F D SEATING PANE G K B C P J M INCHES MIIMETERS MIN TYP MAX MIN TYP MAX A B C D F G BSC 1.27 BSC J K M - - 8º - - 8º P Copyright 2005 ADD Microtech Corp. 5 AMC7160_A (F) June 2005