Datasheet · 2016

Diodes Inc. AL5809 60 V Two-Terminal Constant-Current LED Driver — Datasheet

Two-pin linear constant-current regulator in fixed current versions; a candidate driver for the IR emitter bars.

Author: Diodes Incorporated
Year: 2016
Type: Datasheet
Credit: Diodes Incorporated (diodes.com)

led driver
constant current
ir emitter

AL5809 60V Two Terminal Constant Current LED Driver PowerDI Pin Assignments The AL5809 is a constant current linear LED driver and it provides a cost-effective two pin solution. It has an excellent temperature stability of 20ppm/°C and the current accuracy ±5% regulated over a wide voltage and temperature range. The AL5809 comes in various fixed output current versions removing the need for external current setting resistors creating a simple solution for the linear driving of LEDs. It supports both the high-side and low-side driving of LED chains. 1 IN AL5809 XX Y W X Description The AL5809 turns on when the voltage between IN and OUT swings OUT 2 from 2.5V up to 60V enabling it drive long LED chains. The floating ground, 60V Voltage rating between Input and Output pins designed to withstand the high peak voltage incurred in offline applications. The AL5809 is available in either thermally robust package PowerDI123 or SOD-123 package. Features  Applications 2.5V to 60V Operating Voltage Between Two Terminals  Offline LED Lamps  Robust Power Package Up to 1.2W for PowerDI -123  LED Power Supplies  -40°C to +125°C Temperature Range  White Goods  ±5% LED Current Tolerance Over-Temperature  LED Signs  Instrumentation Illumination ®  15mA, 20mA, 25mA, 30mA, 40mA, 50mA, 60mA, 90mA, 100mA, 120mA, and 150mA Available in PowerDI123 Package  15mA, 20mA, 25mA, 30mA, 40mA and 50mA available in SOD123 Package, Other Current Options Available by Request  Constant Current with Low Temperature Drift and High Power Supply Rejection Ratio   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. POWERDI is a registered trademark of Diodes Incorporated. AL5809 Document number: DS36625 Rev. 5 - 2 1 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Typical Applications Circuit VIN VIN Low Side LED String AL5809 1 IN OUT 2 XX Y W X AL5809 XX Y W X 1 IN High Side LED String OUT 2 Pin Descriptions Pin Name Pin Number (PowerDI123) In 1 Out 2 Function LED Current Input Terminal. For low side LED string application, connect the LED cathode terminal to the “In” terminal. For high side LED string application, connect the LED anode terminal to the “Out” terminal. LED Current Output Terminal. For low side LED string application, connect the LED anode terminal to the “Out” terminal. For high side LED string application, connect the LED cathode terminal to the “Out” terminal. Functional Block Diagram AL5809 Document number: DS36625 Rev. 5 - 2 2 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Absolute Maximum Ratings Symbol Parameters “In” Voltage Relative to “Out” Pin -0.3 to +80 V LED Current from “In” to “Out” 180 mA 4 400 kV V TJ Human Body Model ESD Protection Machine Model ESD Protection Operating Junction Temperature -40 to +175 °C TST Storage Temperature -55 to +150 °C VInOut IInOut ESD HBM ESD MM Caution: Ratings Unit 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. AL5809 Document number: DS36625 Rev. 5 - 2 3 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Package Thermal Data Package θJC Thermal Resistance Junction-to-Case PowerDI123 PowerDI123 27.15°C/W 17.81°C/W SOD-123 69.56°C/W θJA Thermal Resistance Junction-to-Ambient 148.61°C/W (Note 4) PDIS TA = +25°C, TJ = +125°C 0.68W 81.39°C/W (Note 5) 1.24W 278.42°C/W (Note 6) 0.36W Recommended Operating Conditions Symbol VInOut IInOut TA Parameter “In” Voltage Range Relative to “Out” Pin LED Current (Note 7) Operating Ambient Temperature Range (Note 8) Min 2.5 15 -40 Max 60 150 +125 Unit V mA °C Electrical Characteristics (VInOut = 3.5V) (Note 9) Symbol Parameter VInOut In-Out Supply Voltage IInOut Conditions IINOut Current Accuracy (±5% for over temperature) Min Typ Max Unit - TA = -40°C to +125°C 2.5 - 60 V AL5809-15S1-7 AL5809-15P1-7 TA = -40°C to +125°C 14.25 15 15.75 AL5809-20S1-7 AL5809-20P1-7 TA = -40°C to +125°C 19 20 21 AL5809-25S1-7 AL5809-25P1-7 TA = -40°C to +125°C 23.75 25 26.25 AL5809-30S1-7 AL5809-30P1-7 TA = -40°C to +125°C 28.5 30 31.5 AL5809-40S1-7 AL5809-40P1-7 TA = -40°C to +125°C 38 40 42 AL5809-50S1-7 AL5809-50P1-7 TA = -40°C to +125°C 47.5 50 52.5 AL5809-60P1-7 TA = -40°C to +125°C 57 60 63 AL5809-90P1-7 TA = -40°C to +125°C 85.5 90 94.5 AL5809-100P1-7 TA = -40°C to +125°C 95 100 105 AL5809-120P1-7 TA = -40°C to +125°C 114 120 126 AL5809-150P1-7 TA = -40°C to +125°C 142.5 150 157.5 mA ILINE IInOut Current Line Regulation VInOut = 2.5V to 60V (Note 10) TA = +25°C - 1 - % VMIN Minimum Power Up Voltage Increase VInOut (Note 11) TA = -40°C to +125°C - 1.5 - V - µS tON_MIN Minimum On pulse width (Note 12, 13) - 500 - tOFF_MIN Minimum Off pulse width (Note 12, 13) - 500 - - µS Thermal Shutdown Junction Temperature (Note 14) - - +165 - °C Thermal Shutdown Hysteresis - - - +30 - °C TSHDN THYS Notes: 4. Test condition for PowerDI-123: Device mounted on 25.4mm x 25.4mm FR-4 PCB (10mm x 10mm 1oz copper, minimum recommended pad layout on top layer and thermal vias to bottom layer ground plane). For better thermal performance, larger copper pad for heat-sink is needed. 5. When mounted on 50.8mm x 50.8mm GETEK PCB with 25.4mm x 25.4mm copper pads. 6. Test condition for SOD-123: Device mounted on FR-4 PCB with 50.8mm x 50.8mm 2oz copper, minimum recommended pad layout on top layer and thermal vias to bottom layer with maximum area ground plane. For better thermal performance, larger copper pad for heat-sink is needed. 7. The LED operating current is determined by the AL5809 current option index XXX, AL5809-XXXS/P1-7. 8. The Maximum LED current is also limited by ambient temperature and power dissipation such that junction temperature should be kept less than or equal to +125°C. 9. All voltages unless otherwise stated are measured with respect to OUT pin. 10. Measured by the percentage degree of LED current variation when VInOut varies from 2.5V to 60V each current option. 11. Apply the power linearly to the chip until the device starts to turn on. 12. tON_MIN time includes the delay and the rise time needed for IOUT to reach 90% of its final value. tOFF_MIN time is the time needed for IOUT to drop below 10% of its final value. 13. This parameter only guaranteed by design, not tested in production. 14. Ambient temperature at which OTP is triggered may vary depending on application, PCB layout and material used. AL5809 Document number: DS36625 Rev. 5 - 2 4 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Application Information Description The AL5809 is a constant current Linear LED driver and can be placed in series with LEDs as a High Side or a Low Side constant current regulator. The AL5809 offers various current settings from 15mA up to 150mA and different current settings available upon request (contact Diodes local sales office at http://www.diodes.com). The AL5809 contains a Low-Dropout regulator which provides power to the internal Current regulation control block. A fixed preset LED current setting resistor sets the reference current of the Current regulation block. The LED current setting resistor varies with each variant of the AL5809. An accurate current mirror within the Current regulation control block increases the reference current to the preset LED current of the AL5809. Simple LED String The AL5809 can be placed in series with LEDs as a Low Side/High Side constant current regulator. The number of the LEDs can vary from one to as many as can be supported by the input supply voltage. The designer needs to calculate the maximum voltage between In and Out by taking the maximum input voltage minus the voltage across the LED string (Figures 1 & 2). VIN VIN AL5809 1 IN OUT 2 XX Y W X AL5809 XX Y W X 1 IN Low Side LED String High Side LED String OUT 2 Figure 2 High Side LED String Tapping Figure 1 Low Side LED String Tapping The AL5809 can also be used on the high side of the LEDs, see Figure 2. The minimum system input voltage can be calculated by: VIN(min) = VLED_CHAIN + 2.5V Where VLED_CHAIN is the LED chain voltage. The LED current can be increased by connecting two or more AL5809 in parallel in Figure 3. VIN 1 IN IN ... XX Y W X AL5809 XX Y W X 1 OUT OUT 2 2 AL5809 AL5809 (a) Low Side Configuration XX Y W X 1 IN 1 IN ... OUT 2 XX Y W X VIN AL5809 OUT 2 (b) High Side Configuration Figure 3 Higher LED Current by Parallel Configuration of AL5809 AL5809 Document number: DS36625 Rev. 5 - 2 5 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Application Information (continued) PWM Dimming The AL5809 can be used to provide LED current dimming driving the Out pin via the MOSFET switch to ground (Figure 4a) applying a PWM signal with a frequency range between 100Hz and 200Hz. The Out pin current is then effectively switched on and off to modulate the output LED current. The dimming effect can be achieved by varying the PWM signal duty cycle. VIN VIN ON/OFF Switch 1 XX Y W X IN AL5809 XX Y W X 1 IN AL5809 OUT 2 OUT 2 PWM_DIM (ZXMN6A11Z) a) PWM Dimming by External MOSFET b) PWM Dimming by Power Supply VIN ON/OFF Figure 4 PWM Dimming Recommended PWM Frequency and Dimming Range PWM Frequency (Hz) 100 200 Duty Cycle (%) Min 5 10 Max 95 90 Test conditions (Figure 4a): PWM frequency 100Hz–200Hz Square wave, 0-4V gate voltage, VIN = 6V, 1 LED, AL5809-30mA Use the following formula to calculate the Min and Max duty cycle: Min. Duty cycle (%) = (tON_MIN) / (time period of the PWM signal) Max. Duty cycle (%) = 100% - ((tOFF_MIN) / (time period of the PWM signal)) Notes: tON_MIN = 0.5mS (Min. value), and tOFF_MIN = 0.5mS (Min. value) are listed in the Electrical Characteristics table on page 4. AL5809 Document number: DS36625 Rev. 5 - 2 6 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Application Information (continued) Dimming Curves Figure 5 PWM Dimming 30mA vs. Duty Cycle Figure 6 Area Zoom In within Duty Cycle 30% of Figure 5 Recommended Minimum On/Off Pulse Width Figure 7 Minimum On Pulse Width (tON_MIN) AL5809 Document number: DS36625 Rev. 5 - 2 Figure 8 Minimum Off Pulse Width (tOFF_MIN) 7 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Application Information (cont.) Power Dissipation The maximum ambient temperature range of the AL5809 is determined by its power dissipation and thermal impedance of the PCB onto which it is mounted. Its junction temperature must be kept equal to or less than +125°C. The power dissipated is determined by the LED current version that has been selected (15, 20, 25 30, 40, 50, 60, 90, 100, 120 or 150mA) and the difference between the input voltage and LED chain voltage. VINOUT * ILED In a typical 12V system, the input voltage can vary between 11.4V and 12.6V. The recommended minimum V INOUT voltage of 2.5V enables the AL5809 to drive 2 LED in series from the 12V rail (assuming VLED <3.25V). The AL5809’s power dissipation under minimum input voltage conditions will be: So for the 20mA AL5809-20PI under these conditions this equals: VINOUT * ILED = (11.4-6.5) * ILED 4.9V * 20mA = 98mW Under maximum input conditions (12.6V) the AL5809’s power dissipation will be: So for the 20mA AL5809-20QPI this equals: VINOUT * ILED = (12.6-6.5) * ILED 6.1V * 20mA = 122mW So there is a large difference in power dissipation of the Linear LED driver between minimum and maximum battery voltages. And care must be taken to calculate expected power dissipations and then determine the suitable PCB material and layout. See Figures 9, 10 and 11 for graphs showing power dissipation and maximum VINOUT, for different currents and PCB material. Maximizing the area and mass of the ground plane and additional vias between the pad of the OUT pin will improve the thermal impedance (JA) of the AL5809. Maximum VInOut [V] vs. Ambient Temperature [⁰C] for PDI on FR4 Current Options (referred by Apps board FR4, 2-layer, 0.69"x0.76") Power Dissipation [W] vs. Ambient Temperature [⁰C] for PDI-123,SOD-123 on FR4, and PDI-123 on Getek 1.50 60 PDI on Getek (max Tj=145) PDI on FR4 15mA PDI on FR4 20mA PDI on FR4 25mA PDI on FR4 50mA PDI on FR4 90mA PDI on FR4 150mA PDI on FR4 40mA PDI on FR4 60mA 50 1.00 40 Maximum VInOut [V] Power Dissipation (W) 1.25 PDI on FR4 (max Tj=145) 0.75 0.50 30 20 10 0.25 SOD on FR4 (max Tj=145) 0 0.00 0 25 50 75 100 125 0 25 50 Ambient Temperature (°C) 75 100 125 150 Ambient Temperature [°C] Figure 9 Power Dissipation vs. Ambient Temperature @TJ = +145°C Figure 10 Maximum VInOut vs. Temperature Maximum VInOut [V] vs. Ambient Temperature [⁰C] for Current Option on PDI FR4 Board (referred by Apps board FR4, 2-layer, 0.69"x0.76" size) 40 SOD on FR4 15mA 35 Maximum VInOut [V] SOD on FR4 20mA 30 SOD on FR4 30mA SOD on FR4 40mA 25 SOD on FR4 50mA 20 15 10 5 0 0 25 50 75 100 125 Ambient Temperature [°C] Figure 11 Maximum VInOut vs. Temperature AL5809 Document number: DS36625 Rev. 5 - 2 8 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Application Information (cont.) Figure 12 Power Dissipation vs. Ambient Temperature AL5809 Document number: DS36625 Rev. 5 - 2 Figure 13 Power Dissipation vs. Junction Temperature 9 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Typical Performance Characteristics (15mA, 20mA, 25mA, 30mA, 40mA, 50mA PowerDI options) 15mA 20mA 25mA 30mA 40mA 50mA 60 20mA 25mA 30mA 40mA 50mA 1.5 2 60 LED Current [mA] 50 LED Current [mA] 15mA 40 30 20 10 TA=25 50 TA = 25°C 40 30 20 10 0 0 0 5 10 15 20 25 30 0 0.5 1 VInOut [V] Figure 14 LED Current vs. VInOut 15mA 20mA 25mA 30mA 40mA 50mA 15mA_25C LED Current Accuracy [%] LED Current [mA] 50 40 30 20 10 0 -25 -10 5 20 35 50 65 80 95 15mA_125C 110 125 0 5 10 15 20 25 T_Recovery T_Recovery 20 15 10 VInOut=3.5V 20mA 0 35 40 45 50 55 60 Figure 17 LED Current Accuracy (%) vs. VInOut across Temperature 25 5 30 VInOut [V] Figure 16 LED Current vs. Ambient Temperature LED Current [mA] 15mA_-40C 10 8 6 4 2 0 -2 -4 -6 -8 -10 Temperature [⁰C] T_Shut Down 3 Figure 15 Startup Minimum Operating Voltage 60 -40 2.5 VInOut [V] T_Shut Down 45 40 35 30 25 20 15 VInOut= 10 3.5V, 40mA 5 0 -5 100 105 110 115 120 125 130 135 140 145 150 155 160 LED Current [mA] -5 100 105 110 115 120 125 130 135 140 145 150 155 160 Ambient Temperature [⁰C] Ambient Temperature [⁰C] Figure 19 THSD of 40mA Current Option Figure 18 THSD of 20mA Current Option AL5809 Document number: DS36625 Rev. 5 - 2 10 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Typical Performance Characteristics (continued) (60mA, 90mA, 150mA PowerDI options) 60mA 90mA 60mA 150mA 160 140 140 120 120 LED Current [mA] 160 100 80 60 40 LED Current [mA] TA=25⁰C C 20 0 0 5 10 15 20 90mA 150mA 100 80 60 40 TA=25⁰C 20 0 25 0 30 0.5 1 1.5 2 2.5 3 VInOut [V] VInOut[V] Figure 21 Startup Minimum Operating Voltage Figure 20 LED Current vs. VInOut VInOut=3.5 Temperature[⁰C] Figure 23 LED Current Accuracy (%) vs. VInOut across Temperature Figure 22 LED Current across Temperature T_Shut Down T_Recovery T_Recovery 70 60 VInOut=3.5V 60mA 50 40 30 20 10 VInOut=3.5V 150mA LED Current [mA] LED Current [mA] 0 -10 100 160 140 120 100 80 60 40 20 0 -20 100 T_Shut Down 110 120 130 140 150 160 AL5809 Document number: DS36625 Rev. 5 - 2 120 130 140 150 160 Temperature [⁰C] Ambient Tempature [⁰C] Figure 24 THSD of 60mA Current Option 110 Figure 25 THSD of 150mA Current Option 11 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Ordering Information Part Number LED Current Opion AL5809-15P1-7 7” Tape and Reel Quantity Part Number Suffix Package Code Packaging P1 PowerDI123 3,000/ Tape & Reel -7 15mA AL5809-15S1-7 S1 SOD-123 3,000/ Tape & Reel -7 AL5809-20P1-7 P1 PowerDI123 3,000/ Tape & Reel -7 S1 SOD-123 3,000/ Tape & Reel -7 P1 PowerDI123 3,000/ Tape & Reel -7 S1 SOD-123 3,000/ Tape & Reel -7 P1 PowerDI123 3,000/ Tape & Reel -7 S1 SOD-123 3,000/ Tape & Reel -7 P1 PowerDI123 3,000/ Tape & Reel -7 S1 SOD-123 3,000/ Tape & Reel -7 P1 PowerDI123 3,000/ Tape & Reel -7 S1 SOD-123 3,000/ Tape & Reel -7 20mA AL5809-20S1-7 AL5809-25P1-7 25mA AL5809-25S1-7 AL5809-30P1-7 30mA AL5809-30S1-7 AL5809-40P1-7 40mA AL5809-40S1-7 AL5809-50P1-7 50mA AL5809-50S1-7 AL5809-60P1-7 60mA P1 PowerDI123 3,000/ Tape & Reel -7 AL5809-90P1-7 90mA P1 PowerDI123 3,000/ Tape & Reel -7 AL5809-100P1-7 100mA P1 PowerDI123 3,000/ Tape & Reel -7 AL5809-120P1-7 120mA P1 PowerDI123 3,000/ Tape & Reel -7 AL5809-150P1-7 150mA P1 PowerDI123 3,000/ Tape & Reel -7 AL5809 Document number: DS36625 Rev. 5 - 2 12 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Marking Information Part Number Package Identification Code AL5809-15P1-7 PowerDI123 C1 AL5809-20P1-7 PowerDI123 C2 AL5809-25P1-7 PowerDI123 CA AL5809-30P1-7 PowerDI123 C3 AL5809-40P1-7 PowerDI123 C4 AL5809-50P1-7 PowerDI123 C5 AL5809-60P1-7 PowerDI123 C6 AL5809-90P1-7 PowerDI123 C7 AL5809-100P1-7 PowerDI123 CB AL5809-120P1-7 PowerDI123 C8 AL5809-150P1-7 PowerDI123 C9 AL5809-15S1-7 SOD-123 D1 AL5809-20S1-7 SOD-123 D2 AL5809-25S1-7 SOD-123 DA AL5809-30S1-7 SOD-123 D3 AL5809-40S1-7 SOD-123 D4 AL5809-50S1-7 SOD-123 D5 Package Outline Dimensions Please see http://www.diodes.com/package-outlines.html for the latest version. PowerDI123 (Type B) C PowerDI123 Type B Dim Min Max Typ A 3.50 3.90 3.70 B 2.60 3.00 2.80 C 1.63 1.93 1.78 D 0.93 1.00 0.98 E 0.85 1.25 1.00 H 0.15 0.25 0.20 L 0.50 0.80 0.65 All Dimensions in mm E B H D L E A AL5809 Document number: DS36625 Rev. 5 - 2 13 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Package Outline Dimensions (continued) Please see http://www.diodes.com/package-outlines.html for the latest version. SOD123 A 0 .10 100 R0. l l A 0 ll R ° ll 7 A a A c All 7 ° L A1 He E b D SOD123 Dim Min Max Typ A 1.00 1.35 1.05 A1 0.00 0.10 0.05 b 0.52 0.62 0.57 c 0.10 0.15 0.11 D 1.40 1.70 1.55 E 2.55 2.85 2.65 He 3.55 3.85 3.65 L 0.25 0.40 0.30 a 0º 8º -All Dimensions in mm Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. PowerDI123 (Type B) X Dimensions Y G X X1 Y G Value (in mm) 2.000 1.050 4.100 1.500 X1 SOD123 X1 Dimensions Value (in mm) X 0.900 X1 4.050 Y 0.950 Y X AL5809 Document number: DS36625 Rev. 5 - 2 14 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 Taping Orientation The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf. PowerDI123 (Type B) SOD123 AL5809 Document number: DS36625 Rev. 5 - 2 15 of 16 www.diodes.com December 2016 © Diodes Incorporated AL5809 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). 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