AL5817
Document overview
- Manufacturer or author: Diodes Incorporated
- PDF pages: 13
Technical content
Features
Wide Input Voltage Range from 4.5V to 60V Configurable LED Current Setting 4% Reference Voltage Tolerance Low Temperature Drift 15mA Output Drive Capability for MOSFET or Bipolar Transistor LED Open Protection Detected by VFAULT Pin LED Thermal Fold-back Configured by VSET Over Temperature Protection (OTP) Input Under Voltage Lock-Out PWM Dimming Realized Through VFAULT Pin or ENB Pin Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Pin Assignments (Top View) 3 6 8VCC REF VSET OUT VFAULT ENB7 4GND 5 FB EP MSOP-8EP
Applications
Automotive Rear Combination Light LED Signs Instrumentation Illumination Refrigerator Lights Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC ( RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ 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.
Document number: DS40391 Rev. 3 - 2 2 of 13 www.diodes.com August 2018 © Diodes Incorporated NEW PRODUCT AL5817 Typical Application Circuit AL5817 VCC REF FB VFAULT OUTVSET GND ENB VIN R5 R1 AL5817 VCC REF FB VFAULT OUTVSET GND ENB VIN R5 R1 Figure 1 Pin Descriptions Pin Number Pin Name Function
1 VCC Supply input
2 REF
Internal reference voltage. The maximum recommended output current is 50µ A and the maximum recommended capacitor connected from this pin to GND is less than 100pF. A potential divider from REF to VSET can be used to accurately set the output LED current.
3 VSET
LED current setting threshold. The voltage on VSET sets the reference voltage for the FB pin. This pin is pulled down internally if left floating. The capacitance if needed between VSET and GND is recommended to be less than 1nF.
4 GND Ground
Feedback input. When control loop is operating in linear mode the FB pin will be regulated to the level set by VSET. This pin is pulled up internally if left floating. A capacitor may be added between FB and GND to improve noise rejection . Value needs to be limited 100pF or less.
6 OUT Driving output
7 ENB
An input voltage >2V disables the device and external transistor drive. This pin can be used for low frequency PWM dimming of the LED current.
8 VFAULT
Input for LED-open detection. When LED -open detection function is active, if VFAULT is brought lower than approximately 2.5V the device output wi ll be turned off and will auto -retry driving the output to see if the fault still exists. A PWM dimming function will be realized by adding an open collector/drain signal on this pin. EP EP Exposed Pad (bottom). Recommended to be connected to a large -area contiguous copper GND plane for effective thermal dissipation. Do not use as the IC’s only electrical GND connection.
Document number: DS40391 Rev. 3 - 2 3 of 13 www.diodes.com August 2018 © Diodes Incorporated NEW PRODUCT AL5817 Functional Block Diagram Figure 2 Absolute Maximum Ratings (Note 4) Symbol Parameter Rating Unit VVCC Supply Voltage Relative to GND -0.3 to 65 V IVCC IC Supply Current 18 mA VVFAULT Input Voltage Relative to GND -0.3 to VCC V VREF, VVSET, VENB, VOUT, VFB Input Voltage of REF, VSET, ENB, OUT, FB Relative to GND -0.3 to 6 V TJ Operating Junction Temperature -40 to +150 °C TST Storage Temperature -55 to +150 °C Note: 4. Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stres s ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “Recommend ed Operating Conditions” is not implied. Exposure to Absolute Maximum Ratings for extended periods may affect device reliability.
Document number: DS40391 Rev. 3 - 2 4 of 13 www.diodes.com August 2018 © Diodes Incorporated NEW PRODUCT AL5817 ESD Ratings Symbol Parameter Rating Unit VESD Human-Body Model (HBM) 2000 V Charged-Device Model (CDM) 1000 Recommended Operating Conditions Symbol Parameter Min Max Unit VVCC Supply Voltage Range Relative to GND Pin 4.5 60 V VOUT OUT Voltage Range 0 4 V IOUT OUT Pin Current 0 15 mA VVSET VSET Pin Operating Input Voltage Range 0 0.6 V TJ Operating Junction Temperature Range -40 +125 °C TA Operating Ambient Temperature -40 +105 °C Thermal Information (Notes 5 and 6) Symbol Parameter Rating Unit θJA Junction-To-Ambient Thermal Resistance 90 °C/W θJC Junction-To-Case (Top) Thermal Resistance 39 °C/W Note: 5. Dominant conduction path via exposed pad. 6. Test condition for MSOP-8EP: Device mounted on FR-4 PCB (51mm x 51mm 2oz 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.
Document number: DS40391 Rev. 3 - 2 5 of 13 www.diodes.com August 2018 © Diodes Incorporated NEW PRODUCT AL5817 Electrical Characteristics (VCC = 12V and TA = +25° C, unless otherwise specified.) Symbol Parameter Conditions Min Typ Max Unit Power Supply VUVLO Under-Voltage Lockout Voltage VIN Rising - 4.2 4.4 V VIN Falling 3.6 3.85 - ICC Supply Current VCC = 4.5V to 60V, IOUT =10mA - 10.25 11 mA IQ No Load Quiescent Current VCC = 4.5V to 60V, IOUT =0 - 0.25 1 mA ISHDN Shutdown Supply Current VENB > 2.5V, VCC = 4.5V to 60V - 3 20 µA VENB_TH ENB Threshold Voltage - 0.4 1.3 2 V REN ENB Pin Internal Pull-down Resistor - 1.3 2 2.7 MΩ Reference and Feedback loop VREF Reference Voltage VCC = 4.5V to 60V, IOUT =0, IREF = 20µ A 0.384 0.4 0.416 V VREF_LINE Reference Voltage Line Regulation VCC = 4.5V to 19V - 0.2 3 mV VREF_LOAD Reference Voltage Load Regulation IREF = 0 to -50µ A - 1.4 6 mV IFB FB Input Bias Current VFB = 0.2V -200 -125 -80 nA ISET SET Input Bias Current VSET = 0.6V - 25 45 nA VOFFSET VSET to VFB Offset VSET = 0.2V, VFB = VOUT - - 7 mV Fault Detection and Protection IVFAULT Source Current from VFAULT Pin VCC = 4.5V to 60V -20 -15 -10 µA VVFAULT VFAULT Pin Threshold Voltage VCC = 4.5V to 60V, VVFAULT Falling 2.37 2.5 2.63 V VVFAULT_HYS VVFAULT Hysteresis - - 100 - mV tVF_OUTR VFAULT to OUT Rising Delay - - 2 - µs tVF_OUTF VFAULT to OUT Falling Delay - - 1 - TSHDN Thermal Shutdown - - +160 - °C THYS Thermal Shutdown Hysteresis - - +30 - Output Driver Error Amplifier IOUTSOURCE Maximum Source Current VSET – VFB = 10mV VOUT = 0V, VCC = 4.5V to 60V - - -15 mA VOUT = 1V, VCC = 4.5V to 60V - - -15 VOUT = 2V, VCC = 4.5V to 60V - - -11 VOUT = 4V, VCC = 6.0V to 60V - - -5 IOUTSINK Maximum Sink Current VCC =12V, VOUT = 4V, VVFAULT > 2.7V, VSET – VFB = -50mV 20 - - µA VCC =12V, VOUT = 4V, VSET – VFB = -50mV, VVFAULT < 2.3V 0.3 - - mA Gm Trans-Conductance of Error Amplifier VSET – VFB = 5mV, Sourcing Current - 4 - A/V BW Bandwidth - 50 - kHz VOUTMAX Maximum Output Voltage VCC ≥6V, IOUT = -1mA 4 - - V VOUTMIN Minimum Output Voltage VCC =12V, IOUT = 0.1mA, VFB =250mV - - 300 mV tON Turn On Delay Time ENB Active Low - 85 - µs tOFF Turn Off Delay Time ENB Active High - 1 - µs
Document number: DS40391 Rev. 3 - 2 6 of 13 www.diodes.com August 2018 © Diodes Incorporated NEW PRODUCT AL5817 Performance Characteristics (VCC = 12V, TA = +25° C, unless otherwise specified.) Supply Current vs. Temperature Quiescent Current vs. Temperature VUVLO vs. Temperature Shutdown Current vs. Temperature VREF vs. Temperature IVFAULT vs. Temperature -40 -20 0 20 40 60 80 100 120 9.6 9.7 9.8 9.9 10.0 10.1 10.2 10.3 10.4 10.5 10.6 Supply Current (mA) Temperature ( o -40 -20 0 20 40 60 80 100 120 0.10 0.12 0.14 0.16 0.18 0.20 0.22 0.24 0.26 0.28 0.30 0.32 0.34 Quiescent Current (mA) Temperature ( o -40 -20 0 20 40 60 80 100 120 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2 4.3 4.4 4.5 VUVLO(V) Temperature ( o VUVLO_H VUVLO_L -40 -20 0 20 40 60 80 100 120 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 Shutdown Current (A) Temperature( o -40 -20 0 20 40 60 80 100 120 -15.0 -14.8 -14.6 -14.4 -14.2 -14.0 -13.8 -13.6 -13.4 Source Current from VFAULT Pin (A) Temperature ( o -40 -20 0 20 40 60 80 100 120 0.392 0.394 0.396 0.398 0.400 0.402 0.404 0.406 VREF (V) Temperature ( o
Document number: DS40391 Rev. 3 - 2 7 of 13 www.diodes.com August 2018 © Diodes Incorporated NEW PRODUCT AL5817 Typical Performance Characteristics (Cont.) (VCC = 12V, TA = +25° C, unless otherwise specified.) VVFAULT vs. Temperature Source Current vs. Temperature -40 -20 0 20 40 60 80 100 120 2.40 2.43 2.46 2.49 2.52 2.55 2.58 2.61 2.64 VFAULT Pin Threshold Voltage (V) Temperature ( o VVFAULT_H VVFAULT_L -40 -20 0 20 40 60 80 100 120 -25 -24 -23 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 Source Current(mA) Temperature( o VOUT=0V VOUT=1V VOUT=2V VOUT=3V VOUT=4V
Document number: DS40391 Rev. 3 - 2 11 of 13 www.diodes.com August 2018 © Diodes Incorporated NEW PRODUCT AL5817 Ordering Information (Note 7) AL5817 X - X Package MP: MSOP-8EP 13: Tape & Reel Product Name Packing Part Number Package Code Packaging 13” Tape and Reel Quantity Part Number Suffix AL5817MP-13 MP MSOP-8EP 2500 -13 Note: 7. For packaging details, go to our website at https://www.diodes.com/design/support/packaging/diodes -packaging/. Marking Information AL5817 ( Top view ) Y W X E Marking ID Logo Y : Year : 0~9 X : Internal Code 8 7 6 5 1 2 3 4 a~z : 27~52 week; z represents W : Week : A~Z : 1~26 week; 52 and 53 week MSOP-8EP Device Package AL5817MP-13 MSOP-8EP
Document number: DS40391 Rev. 3 - 2 12 of 13 www.diodes.com August 2018 © Diodes Incorporated NEW PRODUCT AL5817 Package Outline Dimensions Please see http://www.diodes.com/package-outlines.html for the latest version. MSOP-8EP 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 Suggested Pad Layout Please see http://www.diodes.com/package-outlines.html for the latest version. MSOP-8EP Dimensions Value (in mm) C 0.650 G 0.450 X 0.450 X1 2.000 Y 1.350 Y1 1.700 Y2 5.300 D A E e y x Seating Plane Gauge Plane 0.25 L4X10° 4X10° D 8Xb See Detail C Detail C c a X C Y Y2 Y1 G
Document number: DS40391 Rev. 3 - 2 13 of 13 www.diodes.com August 2018 © Diodes Incorporated NEW PRODUCT AL5817 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD S 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 m ake 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 a rising out of the application or use of this document o r any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Inco rporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives ha rmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or m ore United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. This document is written in English but may be translated into mult iple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided i n the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety -critical, life support devices or systems, notwithstanding any devices - or systems -related information or support that may be provided by Diodes Incorporated. Further, Customer s must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2018, Diodes Incorporated www.diodes.com