AL8806 HIGH EFFICIENCY 36V 1.5A BUCK LED DRIVER Description Pin Assignments The AL8806 is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive up to 8 LEDs, depending on the forward voltage of the LEDs, in series from a SET GND GND CTRL voltage source of 6V to 36V. The AL8806 switches at frequencies up to 1MHz. This allows the use of small size external components, hence minimizing the PCB area needed. 1 2 3 4 Maximum output current of AL8806 is set via an external resistor connected between the VIN and SET input pins. Dimming is achieved AL8806 8 7 6 5 VIN N/C SW SW MSOP-8EP by applying either a DC voltage or a PWM signal at the CTRL input pin. An input voltage of 0.4V or lower at CTRL switches off the output MOSFET simplifying PWM dimming. Features Applications LED driving current up to 1.5A High Power MR16 Lamps Better than 5% accuracy General Illumination Lamps High efficiency up to 98% Multi-Die LED Driver Operating input voltage from 6V to 36V High switching frequency up to 1MHz PWM/DC input for dimming control Built-in output open-circuit protection MSOP-8EP: Available in “Green” Molding Compound (No Br, Sb) with lead Free Finish/ RoHS Compliant Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. Typical Applications Circuit DFLS230LH D1 RSET 0R089 Document number: DS35144 Rev. 5 - 2 SET VIN 450µF D4 AL8806 C1 C2 AL8806 SW 12VAC DFLS230LH x4 GND ~ D3 CTRL D2 Multidie LED 1µF 33µH L1 D5 1 of 15 www.diodes.com July 2013 © Diodes Incorporated AL8806 Pin Descriptions Pin Name SW GND Pin Number Function MSOP-8EP 5, 6 Switch Pin. Connect inductor/freewheeling diode here, minimizing track length at this pin to reduce EMI. 2, 3 GND Pin CTRL 4 SET 1 VIN 8 EP EP N/C 7 Dimming and On/Off Control Input. Leave floating for normal operation. (VCTRL = VREF = 2.5V giving nominal average output current IOUTnom = 0.1/RS) Drive to voltage below 0.4V to turn off output current Drive with DC voltage (0.5V < VCTRL < 2.5V) to adjust output current from 20% to 100% of IOUTnom A PWM signal (low level ≤ 0.4V and high level > 2.6; transition times less than 1us) allows the output current to be adjusted below the level set by the resistor connected to SET input pin. Set Nominal Output Current Pin. Configure the output current of the device. Input Supply Pin. Must be locally decoupled to GND with > 2.2µF X7R ceramic capacitor – see applications section for more information. Exposed pad: Connect to GND and thermal mass for enhanced thermal impedance. It should not be used as electrical ground conduction path. no connection Functional Block Diagram AL8806 Document number: DS35144 Rev. 5 - 2 2 of 15 www.diodes.com July 2013 © Diodes Incorporated AL8806 Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) Symbol ESD HBM ESD MM Parameter Human Body Model ESD Protection Machine Model ESD Protection Ratings 2.5 200 Unit kV V VIN Continuous VIN pin voltage relative to GND -0.3 to +40 V VSW SW voltage relative to GND -0.3 to +40 V CTRL pin input voltage -0.3 to +6 V VCTRL ISW-RMS ISW-PK DC or RMS switch current Peak switch current (<10%) 1.65 A 3 A Junction Temperature 150 °C TLEAD Lead Temperature Soldering 300 °C TST Storage Temperature Range -65 to +150 °C TJ Caution: Stresses greater than the 'Absolute Maximum Ratings' specified above, may cause permanent damage to the device. These are stress ratings only; functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be affected by exposure to absolute maximum rating conditions for extended periods of time. Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling and transporting these devices. Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.) Symbol Min Max Operating Input Voltage relative to GND 6.0 36 V VCTRLH Voltage High for PWM dimming relative to GND 2.6 5.5 V VCTRLDC Voltage range for 20% to 100% DC dimming relative to GND 0.5 2.5 V 0 0.4 V VIN VCTRLL Parameter Voltage Low for PWM dimming relative to GND ISW DC or RMS switch current fOSC Switching Frequency Junction Temperature Range TJ -40 Unit 1.5 A 1 MHz +125 °C Electrical Characteristics (@VIN = 12V, TA = +25°C, unless otherwise specified.) Symbol Parameter Conditions VINSU Internal regulator start up threshold VIN rising VINSH Internal regulator hysteresis threshold VIN falling IQ Quiescent current Output not switching (Note 4) IS Input supply Current CTRL pin floating f = 250kHz Set current Threshold Voltage VCTRL ≥ 2.6V or floating. VTH Set threshold hysteresis VTH-H Min Typ 100 95 mV µA mA 100 105 ±20 VSET = VIN-0.1 16 RCTRL 50 VREF Internal Reference Voltage ISW = 1A Switch leakage current VIN =36V 0.18 JA Thermal Resistance Junction-to-Ambient (Note 5) MSOP-8EP (Note 6) 69 Thermal Resistance Junction-to-Case (Note 5) MSOP-8EP (Note 6) 4.3 mV mV 22 µA kΩ 2.5 On Resistance of SW MOSFET JC Notes: 300 5 Referred to internal reference ISW_Leakage V 1.8 SET pin input current RDS(on) Unit 5.9 350 CTRL pin input resistance ISET Max V 0.35 Ω 0.5 μA C/W 4. AL8806 does not have a low power standby mode but current consumption is reduced when output switch is inhibited: VSENSE = 0V. Parameter is tested with VCTRL ≤ 2.5V 5. Dominant conduction path via exposed pad. Refer to figure 5 for the device derating curve. 6. Measured on an FR4 51x51mm PCB with 2oz copper standing in still air with minimum recommended pad layout on top layer and thermal vias to bottom layer maximum area ground plane. For better thermal performance, larger copper pad for heat-sink is needed. AL8806 Document number: DS35144 Rev. 5 - 2 3 of 15 www.diodes.com July 2013 © Diodes Incorporated AL8806 Typical Performance Characteristics 900 400 L = 33µH V CTRL = 0V V SET = V IN TA = 25 °C 350 Frequency (kHz) 250 TA = 25°C 700 300 IIN (µA) V IN = 12V 1 LED RSET = 150m 800 200 150 100 600 L = 68µH 500 400 300 200 L = 100µH 50 0 100 0 1.6 1.4 5 0 10 15 20 25 30 VI N (V) Supply Current (not switching) vs. Input Current 60 3 4 VCTR L (V) Switching Frequency vs. VCT RL 5 TA = 25 C 40 RSET = 100m ICT RL (µA) LED CURRENT (A) 1.2 0.8 2 V SET = V IN = 12V L =68µH 1 1 80 RSET = 68m TA = 25°C 0 RSET = 150m 20 0 0.6 -20 0.4 -40 0.2 0 -60 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 V CTRL (V) ICTRL vs VCTRL 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 CTRL VOLTAGE (V) LED Current vs. VCTRL 2.52 3 V CTRL = Open V SET = V IN = 12V 2.5 2.51 V CTRL (V) V CTRL (V) 2 1.5 1 V CTRL = Open V SET = V IN 2.49 TA = 25 C 0.5 2.50 0 0 5 10 15 20 VIN (V) V CTRL vs. Input Voltage (CTRL pin open circuit) AL8806 Document number: DS35144 Rev. 5 - 2 25 30 2.48 -40 4 of 15 www.diodes.com -15 10 35 60 85 Ambient Temperature (°C) V CTRL vs. Temperature 110 July 2013 © Diodes Incorporated AL8806 Typical Performance Characteristics (cont.) 0.9 180 0.8 160 3.5 0.7 140 3.0 0.6 4.5 1 LED R SET = 150m LED Current Error (%) 4.0 L = 68µH 0.5 2.5 LED Current Error 0.4 2.0 ILED 1.5 1.0 RDS(ON) (m) 200 V IN = 12V LED Current (A) 1 5.0 120 100 0.3 60 0.2 40 0.0 0% 0 0 100% 20% 40% 60% 80% PWM Duty Cycle ILED vs. PWM Duty Cycle VCTRL = Open VSET = VIN 12V 20 0.1 0.5 80 260 130 240 125 TA = 25C 0 5 10 15 20 25 VIN (V) RDS(ON) vs. Input Voltage 30 18 16 V SENSE 120 14 220 V SENSE (mV) RDS(ON) (m) V SW 180 160 110 10 105 8 100 6 4 95 140 RSET = 150m L = 68µH V IN = 12V 1 LED Load 90 120 VCTRL = Open VSET = VIN 12V 100 -40 -15 10 35 60 85 AMBIENT TEMPERATURE (°C) SW RDS(ON) vs. Temperature 100% 85 110 80 V SW 12 115 200 2 0 -2 0 2 4 6 Time (µs) SW Output Switching Characteristics 8 L = 33µH RSET = 150m 90% TA = 25 C 2 LED 80% Duty Cycle 70% 60% 50% 40% 30% 20% 10% 0% 6 9 12 15 18 21 24 Input Voltage (V) Duty Cycle vs. Input Voltage AL8806 Document number: DS35144 Rev. 5 - 2 27 30 5 of 15 www.diodes.com July 2013 © Diodes Incorporated AL8806 Typical Operating Performance Characteristics (cont.) 1.5A Nominal LED Current 1.0A Nominal LED Current 10% 10% 8% 2 LEDs 6% 6 LEDs 7 LEDs 7 LEDs 8 LEDs 3 LEDs 6% 2 LEDs 5 LEDs 4% DEVIATION 4% % ERROR 8% 6 LEDs 4 LEDs 2% 0% 1 LED -2% -4% 3 LEDs 2% 1 LED 0% -2% -4% -6% -6% TA = 25°C L = 33µH RS = 66.67m -8% -10% 6 9 12 15 18 21 24 INPUT VOLTAGE (V) 27 30 -8% TA = 25°C L = 33µH RS = 100m -10% 6 9 12 15 18 21 24 INPUT VOLTAGE (V) 27 30 700 700 TA = 25°C L = 33µH RS = 66.67m 600 SWITCHING FREQUENCY (kHz) SWITCHING FREQUENCY (kHZ) 8 LEDs 5 LEDs 4 LEDs 500 400 300 200 1 LED 100 6 9 12 15 18 21 24 INPUT VOLTAGE (V) 27 400 300 200 1 LED 100 0 6 30 100% 500 2 LEDs 3 LEDs 4 LEDs 5 LEDs 6 LEDs 2 LEDs 3 LEDs 4 LEDs 5 LEDs 6 LEDs 7 LEDs 8 LEDs 0 T A = 25°C L = 33µH RS = 100m 600 9 8 LEDs 7 LEDs 12 15 18 21 24 INPUT VOLTAGE (V) 100% 4 LEDs 5 LEDs 6 LEDs 7 LEDs 8 LEDs 4 LEDs 7 LEDs 5 LEDs 6 LEDs 27 30 8 LEDs 3 LEDs 95% 95% 2 LEDs 90% EFFICIENCY 3 LEDs 2 LEDs 85% 90% 1 LED 85% 1 LED 80% 80% TA = 25°C L = 33µH RS = 100m TA = 25°C L = 33µH RS = 66.67m 75% 6 9 12 15 18 21 24 INPUT VOLTAGE (V) AL8806 Document number: DS35144 Rev. 5 - 2 75% 27 30 6 of 15 www.diodes.com 6 9 12 15 18 21 24 INPUT VOLTAGE (V) 27 30 July 2013 © Diodes Incorporated AL8806 Application Information AL8806 Operation In normal operation, when voltage is applied at VIN, the AL8806 internal switch is turned on. Current starts to flow through sense resistor RSET, inductor L1, and the LEDs. The current ramps up linearly, and the ramp rate is determined by the input voltage VIN and the inductor L1. DFLS230LH D1 RSET 12V Multidie LED 1µF SW 4.7µF 100nF C3 AL8806 GND C2 CTRL C1 SET VIN 0R082 33µH GND L1 Figure 1 Typical Application Circuit This rising current produces a voltage ramp across RSET. The internal circuit of the AL8806 senses the voltage across RSET and applies a proportional voltage to the input of the internal comparator. When this voltage reaches an internally set upper threshold, the internal switch is turned off. The inductor current continues to flow through RSET, L1, the LEDs and the schottky diode D1, and back to the supply rail, but it decays, with the rate of decay determined by the forward voltage drop of the LEDs and the schottky diode. This decaying current produces a falling voltage at R1, which is sensed by the AL8806. A voltage proportional to the sense voltage across RSET is applied at the input of the internal comparator. When this voltage falls to the internally set lower threshold, the internal switch is turned on again. This switch-on-and-off cycle continues to provide the average LED current set by the sense resistor RSET. LED Current Control The LED current is controlled by the resistor RSET in Figure 1. Connected between VIN and SET the nominal average output current in the LED(s) is defined as: ILED VTHD RSET If the CTRL pin is driven by an external voltage (higher than 0.4V and lower than 2.5V), the average LED current is: ILED VCTRL VTHD VREF R SET For example for a desired LED current of 1.33A and a default voltage VCTRL=2.5V the resulting resistor is: R SET VTHD VCTRL 0 . 1 2 .5 75m ILED VREF 1.33 2.5 DC Dimming The CTRL pin can be driven by an external DC voltage (VCTRL), to adjust the output current to a value below the nominal average value defined by RSET. The LED current decreases linearly with the CTRL voltage when 0.5V ≤ VCTRL ≤ 2.5V, as shown on page 4 for 4 different current levels. Note that 100% brightness setting corresponds to VCTRL = VREF, nominally 2.5V. For any voltage applied on the CTRL pin that is higher than VREF, the device will not overdrive the LED current and will still set the current according to the equation VCTRL = VREF. When the CTRL voltage falls below the threshold, 0.4V, the output switch is turned off which allows PWM dimming. AL8806 Document number: DS35144 Rev. 5 - 2 7 of 15 www.diodes.com July 2013 © Diodes Incorporated AL8806 Application Information (cont.) PWM Dimming LED current can be adjusted digitally, by applying a low frequency Pulse Width Modulated (PWM) logic signal to the CTRL pin to turn the device on and off. This will produce an average output current proportional to the duty cycle of the control signal. In particular, a PWM signal with a max resolution of 10bit can be applied to the CTRL pin to change the output current to a value below the nominal average value set by resistor RSET. To achieve this resolution the PWM frequency has to be lower than 500Hz, however higher dimming frequencies can be used - at the expense of dimming dynamic range and accuracy. Typically, for a PWM frequency of 500Hz the accuracy is better than 1% for PWM ranging from 1% to 100%. 700 LED current [mA] 600 500 400 300 200 100 0 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 7% 8% 9% 10% PWM dimming [%] Figure 2 PWM Dimming at 500Hz 70 LED current [mA] 60 50 40 30 20 10 0 0% 1% 2% 3% 4% 5% 6% PWM dimming [%] Figure 3 Low Duty Cycle PWM Dimming at 500Hz The PWM pin is designed to be driven by both 3.3V and 5V logic levels directly from a logic output with either an open drain output or push-pull output stage. AL8806 Document number: DS35144 Rev. 5 - 2 8 of 15 www.diodes.com July 2013 © Diodes Incorporated AL8806 Application Information (cont.) Soft Start The AL8806 does not have in-built soft-start action – this provides very fast turn off of the output the stage improving PWM dimming accuracy; nonetheless, adding an external capacitor from the CTRL pin to ground will provide a soft-start delay. This is achieved by increasing the time taken for the CTRL voltage to rise to the turn-on threshold and by slowing down the rate of rise of the control voltage at the input of the comparator. Adding a capacitor increases the time taken for the output to reach 90% of its final value, this delay is 0.1ms/nF, but will impact on the PWM dimming accuracy depending on the delay introduced. Figure 4 Soft Start with 22nF Capacitor on CTRL Pin (VIN = 36V, ILED = 667mA, 1 LED) Reducing Output Ripple Peak to peak ripple current in the LED(s) can be reduced, if required, by shunting a capacitor C2 across the LED(s) as shown already in the circuit schematic. A value of 1μF will reduce the supply ripple current by a factor three (approx.). Proportionally lower ripple can be achieved with higher capacitor values. Note that the capacitor will not affect operating frequency or efficiency, but it will increase start-up delay, by reducing the rate of rise of LED voltage. By adding this capacitor the current waveform through the LED(s) changes from a triangular ramp to a more sinusoidal version without altering the mean current value. AL8806 Document number: DS35144 Rev. 5 - 2 9 of 15 www.diodes.com July 2013 © Diodes Incorporated AL8806 Application Information (cont.) Capacitor Selection The small size of ceramic capacitors makes them ideal for AL8806 applications. X5R and X7R types are recommended because they retain their capacitance over wider voltage and temperature ranges than other types such as Z5U. A 2.2μF input capacitor is sufficient for most intended applications of AL8806; however a 4.7μF input capacitor is suggested for input voltages approaching 30V. Diode Selection For maximum efficiency and performance, the rectifier (D1) should be a fast low capacitance Schottky diode with low reverse leakage at the maximum operating voltage and temperature. The Schottky diode also provides better efficiency than silicon PN diodes, due to a combination of lower forward voltage and reduced recovery time. It is important to select parts with a peak current rating above the peak coil current and a continuous current rating higher than the maximum output load current. In particular, it is recommended to have a diode voltage rating at least 15% higher than the operating voltage to ensure safe operation during the switching and a current rating at least 10% higher than the average diode current. The power rating is verified by calculating the power loss through the diode. Schottky diodes, e.g. B240 or B140, with their low forward voltage drop and fast reverse recovery, are the ideal choice for AL8806 applications. Thermal and Layout Considerations For continuous conduction mode of operation, the absolute maximum junction temperature must not be exceeded. The maximum power dissipation depends on several factors: the thermal resistance of the IC package JA, PCB layout, airflow surrounding the IC, and difference between junction and ambient temperature. The maximum power dissipation can be calculated using the following formula: where TJ(MAX) is the maximum operating junction temperature, TA is the ambient temperature, and JA is the junction to ambient thermal resistance. The recommended maximum operating junction temperature, TJ, is 125°C and so maximum ambient temperature is determined by the AL8806’s junction to ambient thermal resistance, JA. To support high LED drive at higher ambient temperatures the AL8806 has been packaged in thermally enhanced MSOP-8EP package. JA, is layout dependent and the AL8806’s JA in MSOP-8EP on a 1600 approximately 69°C/W. Therefore the maximum power dissipation at TA = +25°C is: PD(MAX ) 125C 25C 1.45 W 69C / W Figure 5, shows the power derating of the AL8806 on an FR4 Power dissipation (mW) 51 x 51mm double layer PCB with 2oz copper standing in still air is 1400 MSOP-8EP 1200 1000 800 600 400 200 51x51mm PCB with 2oz copper standing in still air. 0 As the ambient temperature increases and/or the PCB area reduces the maximum allowable power dissipated by the AL8806 will decrease. AL8806 Document number: DS35144 Rev. 5 - 2 10 of 15 www.diodes.com -40 -25 -10 5 20 35 50 65 80 Ambient temperature (°C) 95 110 125 Figure 5 Derating Curve July 2013 © Diodes Incorporated AL8806 Application Information (cont.) PCB Layout When laying out the PCB for the AL8806 the following should be observed: 1. The decoupling capacitor C1 has to be placed as close as possible to VIN 2. The sense resistor, RSET, has to be placed as close as possible to VIN and SET 3. The anode of the freewheel diode (D1), the SW pin and the inductor have to be placed as close as possible to each other to avoid ringing. SET D1 C2 SW GND C1 AL8806 CTRL To avoid radiated EMI keep dashed tracks as short as possible VIN RSET L1 Figure 6 PCB Layout The AL8806 has two evaluation boards available on request (AL8806EV4 and AL8806EV6). Information can be found on the Diodes website and from a Diodes’ sales representative. Application Example A typical application example for the AL8806 is the MR16 lamp; which normally operate from 12VDC or 12VAC supplies, using conventional electromagnetic transformers or electronic transformers. As a replacement for MR16 halogen lamps, LED lamps offer a more energy efficient solution - radiating no heat and no Ultra Violet light. The low thermal impedance of the AL8806 and its 1.5A switch capability allows it drive some of the latest multi-die LEDs; which increases the lamp’s luminance. This application example is intended to fit into the base connector space of an MR16 style LED lamp. The design has been optimized for part count and thermal performance for a multi-die LED in the Lens section as well as EMI conformance. Figure 7 MR16 Schematic AL8806 Document number: DS35144 Rev. 5 - 2 11 of 15 www.diodes.com July 2013 © Diodes Incorporated AL8806 Application Information (cont.) Application Example (cont.) The output of the 12V transformer is fed into the bridge rectifier, comprising of D2, D3, D4 and D5. C10 offers an optional EMI filtering at the input. (see figure 9) Capacitor, CBULK, (capacitors C1 and C2 on the PCB and BOM are multiple components to reduce size) forms the bulk reservoir capacitance used to sustain operation of the device during the low part of the rectified AC wave. In the case of a system driving two LEDs at 1.1A, one 470µF plus 47µF capacitors are required. Capacitors C3 and C9 provide local decoupling for the AL8806 and for the schottky freewheeling diode, D1. It is important that C3 is as close as possible to the AL8806’s VIN pin and that C9 is as close to the VIN and shottky diode as possible, as reflected in the layout shown below in figure 8. The LED current is determined by the total resistance between the VIN and SET pins (R1 and R2 in figures 7 (schematic) and 8 (top PCB) and BOM). C4 decouples the LED connections, again to minimize EMI, as well as smoothing the current. D1 operates as the freewheeling diode, providing a current path for the LED current when the power switch at SW pin is off. Capacitors C5 to C9, 1.5nF have been added to improve the overall EMI performance. C5 is connected across the Supply pins to reduce radiation via the wiring. C6 and C7 also assist the reduction of EMI via the wiring. C8 snubs high frequency radiation from the harmonics in the switching regulator. A large number of vias have been used to improve the grounding effect throughout the PCB to improve the evaluation board’s EMI performance. Figure 8 AL8806EV6 evaluation board (Top) AL8806 Document number: DS35144 Rev. 5 - 2 Figure 9 AL8806EV6 evaluation board (Bottom) 12 of 15 www.diodes.com July 2013 © Diodes Incorporated AL8806 Application Information (cont.) AL8806EV6 BOM Count Designator Description Package Manufacturer Part Number Radial, 10 x 12.5mm Rubycon 25ZLH470M 1 C1 Capacitor, 470uF, 25V Aluminium Electrolytic 1 C2 Capacitor, 4.7µF 10% 50V X7R 1210 Kemet C1210X475K5RAC 3 C3, C9, C10 Capacitor, 100nF 10% 50V X7R 0805 Kemet NIC C1210X475K5RAC NMC0805X7R104K50TRPF 1 C4 Capacitor, 100nF 10% 50V X7R 1206 Kemet NIC C1206104K5RAC7800 NMC1206X7R104K50TRPF 4 C5 to C8 Capacitor, 1.5nF 10% 50V or 100V, COG 0805 generic 1 L1 Inductor, shielded, 15µH 20% 6.6 x 6.6mm Coilcraft NIC Würth MSS7341-153ML NPIS64D150MTRF 744777115 1 L2 Inductor, ferrite bead, 6A, 30ohms @100MHz 0805 TDK MPZ2012S300A 1 R1 Resistor, 0.15ohms 1% 250ppm 125mW 0805 generic 1 R2 Resistor, 0.2ohms 1% 250ppm 125mW 0805 generic 1 D1 Diode, schottky, 36V 2A DFLS230 (alternatives: DFLS230L or LH) PowerDi123 Diodes Inc DFLS230-7 4 D2 to D5 Diode, Super Barrier Rectifier, 36V 2A SBR2U30 PowerDi123 Diodes Inc SBR2U30P1-7 1 U1 IC, LED Driver, AL8806 MSOP-8EP Diodes Inc AL8806MP8-13 The AL8806 guarantees high level of performance both with 12VAC and 12VDC power supply. Ordering Information AL8806 XXX - XX Package Packing MP8 : MSOP-8EP 13 : 13” Tape & Reel Part Number Package Code Packaging AL8806MP8-13 MP8 MSOP-8EP AL8806 Document number: DS35144 Rev. 5 - 2 Tape and Reel Quantity 2500/Tape & Reel 13 of 15 www.diodes.com Part Number Suffix -13 July 2013 © Diodes Incorporated AL8806 Marking Information MSOP-8EP Part Number AL8806MP8-13 Package MSOP-8EP Package Outline Dimensions (All dimensions in mm.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. MSOP-8EP Dim Min Max Typ A 1.10 A1 0.05 0.15 0.10 A2 0.75 0.95 0.86 A3 0.29 0.49 0.39 b 0.22 0.38 0.30 c 0.08 0.23 0.15 D 2.90 3.10 3.00 D1 1.60 2.00 1.80 E 4.70 5.10 4.90 E1 2.90 3.10 3.00 E2 1.30 1.70 1.50 E3 2.85 3.05 2.95 e 0.65 L 0.40 0.80 0.60 a 0° 8° 4° x 0.750 y 0.750 All Dimensions in mm D 4X 10 ° 0.25 D1 x E E2 Gauge Plane Seating Plane a y 1 4X 10 ° 8Xb e Detail C E3 A1 L A3 c A2 A D E1 See Detail C Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. X C Y G Y2 Dimensions C G X X1 Y Y1 Y2 Y1 X1 AL8806 Document number: DS35144 Rev. 5 - 2 14 of 15 www.diodes.com Value (in mm) 0.650 0.450 0.450 2.000 1.350 1.700 5.300 July 2013 © Diodes Incorporated AL8806 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. 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Copyright © 2013, Diodes Incorporated www.diodes.com AL8806 Document number: DS35144 Rev. 5 - 2 15 of 15 www.diodes.com July 2013 © Diodes Incorporated