Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 Features General Description E522.84/85/86/87 family devices provide triple linear current controller for LED driving (standalone driver or LED cluster). Diagnostic features are provided to meet automotive requirements, together with a communication interface “RUN” to link ICs to generate more than three channels, supporting common current configuration per IC and including digital PWM dimming via fast ENA. Three integrated Linear Current Drivers (3*60mA) Parallel Output Operation for up to 180mA Low Power Standby / Sleep Mode Operating Input Voltage Range 5V to 25V, max. 40V External Reference Voltage / Derating Supported Common PWM Dimming (All channels in parallel) Diagnostic Functionalities (LED Driver Open/Short, IR Config Open/Short, Junction Temperature, Supply Voltage) Diagnostic Bus to link ICs “Single Lamp Behaviour” implemented AEC-Q100 Qualification Internal derating for reference voltage and overtemperature shutdown for extreme temperatures >180°C protect E522.8x in case of abnormal operation conditions. Applications Automotive LED Lighting, Rear Lighting Turn Indicator Driver Low Current Interior Lighting Industrial LED Applications or simple RGB Drivers A high voltage capable input ENA can be used to digitally enable or disable E522.8x. In addition, this input may be used as analog reference voltage input, e.g. to realize thermal derating. Ordering Information Ordering-No.: TempJunc Range Package E52284A80D -40°C to +150°C SOIC8EP E52285A80D -40°C to +150°C SOIC8EP E52286A80D -40°C to +150°C SOIC8EP E52287A80D -40°C to +150°C SOIC8EP “Single Lamp Mode” allows to simulate the fail-behaviour of a single bulb to e.g. meet legal restrictions regarding lighting. Typical Application Circuit VS RUNx ENA Supply Reference OVT ENA ENA Dimm and Derating - High VS - High Temp - Ext. Derating IR RUNy HV DIAG Open Drain I/O with Pullup Open / Short Detection @ LEDx RUNz E522.8x Switched Supply RUN 3x Current Source LEDx OFF up to 60mA per Channel Current Reference for LEDx Resistor Driver for External R Current Reference for LEDx E522.84/85/86/87 GND This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 1/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 Version ‘OPEN’ Diagnostic Package & Current E522.84 Open Diagnostic at V VS > 7.5V SOIC8EP ILED = 20mA...60mA E522.85 Open Diagnostic at V VS > 9.0V SOIC8EP ILED = 20mA...60mA E522.86 Open Diagnostic at V VS > 10.0V SOIC8EP ILED = 20mA...60mA E522.87 Open Diagnostic at V VS > 15.0V SOIC8EP ILED = 20mA...60mA Functional Diagram VS RUNx ENA Supply Reference OVT ENA ENA Dimm and Derating Open / Short Detection @ LEDx - High VS - High Temp - Ext. Derating IR RUNy HV DIAG Open Drain I/O with Pullup RUNz E522.8x Switched Supply RUN 3x Current Source LEDx OFF up to 60mA per Channel Current Reference for LEDx Resistor Driver for External R Current Reference for LEDx E522.84/85/86/87 GND Pin Configuration Top View RUN 1 VS 2 GND 3 ENA 4 Note: E522.8x exposed die pad (bottom side) 8 LED1 7 LED2 6 LED3 5 IR Not to scale This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 2/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 Pin Description Pin 1 2 3 4 5 6 7 8 - Name RUN VS GND ENA IR LED3 LED2 LED1 Exposed Pad Type 1) HV_A_IO HV_S S HV_A_I A_IO HV_A_O HV_A_O HV_A_O Description RUN Diagnostic Bus Interface to link 522.8x Products High-Voltage Supply Input Ground Connection High-Voltage Enable and optional analog Referencevoltage Input Current Configuration Interface Output Channel 3, connect to LED directly Output Channel 2, connect to LED directly Output Channel 1, connect to LED directly Exposed Pad, Connect to GND for thermal connection 1) A = Analog, D = Digital, S = Supply, I = Input, O = Output, B = Bidirectional, HV = High Voltage This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 3/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 1 Absolute Maximum Ratings Stresses beyond these absolute maximum ratings listed below may cause permanent damage to the device. These are stress ratings only; operation of the device at these or any other conditions beyond those listed in the operational sections of this document is not implied. Exposure to absolute maximum rated conditions for extended periods may affect device reliability. All voltages referred to VGND. Currents flowing into terminals are positive, those drawn out of a terminal are negative. No. Description Condition Symbol Min Max Unit 1 VS Pin Voltage V VS -0.3 40 V 2 ENA Pin Voltage VENA -0.3 40 V 3 IR Pin Voltage VIR -0.3 5.5 V 4 IR Pin Current IIR -1 1 mA 5 LEDx Current ILED.x -100 100 mA 6 LEDx Pin Voltage VLED,x -1 V VS V 7 RUN Pin Voltage VRUN -0.3 V VS V 8 RUN Pin Current IRUN -5 5 mA 9 Junction Temperature Continuous TJ -40 150 °C 10 Ambient Temperature Info Parameter TA -40 125 °C 11 Storage Temperature Unsoldered Device TST -40 125 °C 12 Power Dissipation PV 1.8 W 13 Thermal Resistance Junction to Exposed Die Pad RTH,J-C 8 K/W 1) 1) consider maximum junction temperature and cooling measures to define ambient operating range 2 ESD No. Description Condition Symbol Min Max Unit 1 ESD HBM Protection at all Pins 1) VESD,HBM -2 2 kV 2 ESD CDM Protection at Corner Pins 2) VESD,CDM,1 -750 750 V 3 ESD CDM Protection at all other Pins 2) VESD,CDM,2 -500 500 V 1) According to AEC-Q 100-002, Human Body Model, 1.5kΩ resistance, 100pF capacitance. 2) According to AEC-Q 100-011, Charged Device Model, pulse rise time (10% to 90%) <400ps, 1Ω resistance. This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 4/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 3 Recommended Operating Conditions No. Description Condition Symbol Min Typ Max Unit 25 V 1 Recommended Operating Voltage Range V VS,OP 5 14 2 VS Capacitance per E522.8x CVS,OP 220 330 3 Nominal Value of Current Selection Resistor at IR to GND RIR 9.53 4 Capacitance at IR Pin to drive RIR 5 Typ. configured Operating Current per Channel 1) ILED,x 19 6 Dimming Frequency at ENA 2) fPWM 50 7 Minimum High / Low Pulsewidth in case of PWM Dimming TPULSE,PWM 90 8 Total Capacitance for RUN Bus 9 Capacitance at LEDx Driver Outputs CLED,x 10 Inductance at LEDx Driver Outputs LLED,x LED Channel operating 1) CIR 200 30 kΩ 100 pF 60.5 mA 1000 Hz µs CRUN 3) nF 6.8 1 nF 22 nF 1 µH 1) If selection interface IR is used with higher resistive values take a reduced accuracy into account. Pay attention to the ‘open’ state detection limit „IIR,OPEN“ for IRx configuration 2) High PWM frequencies need to take into account, that there is an inherent startup delay between rising edge at IRx and current flow, which may influence PWM linearity 3) High capacitance values lead to additional delay between rising edge at ENA and startup of LEDx Drivers This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 5/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 4 Electrical Characteristics (V VS = 5V to 25V, TJ= -40°C to +150°C and recommended operating range, unless otherwise noted. Typical values are at V VS = 14V and TJ = 25°C. Positive currents flow into the device pins.) Description Condition Symbol Min Typ Max Unit Enable threshold at ENA VENA rising VENA,ON 1.2 V Disable threshold at ENA VENA falling VENA,OFF 1.06 V RENA,PD 500 kΩ Supply and Bias ENA internal Pulldown Resistor VS Undervoltage Release Threshold VS rising edge V VS,ERR VS Undervoltage Hysteresis VS falling edge V VS,ERR,HYST 3.8 4.1 440 VS Standby Current in "Single Lamp Mode, Counting" V VS = 14V VENA = 0V IVS,SLEEP TJ ≤ +125°C VENA > 3V VRUN < 2V No error detected IVS,STBY,NOM in device 1) VENA > 3V “IR Open” error de- IVS,STBY,ERR tected by device 2) Overtemperature Shutdown TJ rising TJ,OT TJ falling TJ,OT,HYST 20 Initial delay after V VS > V VS,ERR VENA > VENA,ON tSTART 30 AI,LEDx/I,IR 385 VS Sleepmode Current VS Current in "Standby Mode" Overtemperature Recovery Hysteresis *) Initial Startup Delay of E552.8x after first Power-Up *) 4.4 mV 12.5 165 V 28 µA 80 µA 100 µA 185 °C °C 80 µs LED Driver Current Amplification factor between IR Input and LEDx Outputs LED Current Tolerance (maximum) LED Current Tolerance (High) LED Current Tolerance (Low) RIR = 9.53kOhm V VS = VENA = 14V V VS,LEDx > 1V RIR = 12kOhm V VS = VENA = 14V V VS,LEDx > 1V RIR = 30kOhm V VS = VENA = 14V V VS,LEDx > 1V ILED,MAX -64 -60.5 -57 mA ILED,HIGH -51 -48 -45 mA ILED,LOW -21.5 -19 -16.5 mA 450 mV Drop-Voltage of LEDx Outputs for 50mA ILEDx = 50mA VLEDx,DROP 250 Pulldown Resistor in case of LEDx being turned ‘off’ V VS = 14V VENA = 0V RLED,PD,OFF 10 kΩ *) Not tested in production Notes on table section Supply and Bias 1) See state diagram in chapter „5.4 State Diagram“ for details 2) Please note, that in case of LED or IR shortcircuit the average input current also depends on the configured current and the re-diagnostic dutycycle. Example: In case of a single LED short to GND the current at VS in SLM is typ. approx. 100µA plus 64/5900*ILEDx This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 6/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 Electrical Characteristics (continued) (V VS = 5V to 25V, TJ= -40°C to +150°C and recommended operating range, unless otherwise noted. Typical values are at V VS = 14V and TJ = 25°C. Positive currents flow into the device pins.) Description Condition Symbol Min Typ Max Unit Internal Nominal Reference to drive RIRx VENA > 3.3V TJ < TJ,DERATE VREF,NOM 1.44 1.5 1.56 V Internal Reference Derating in case of high V VS V VS > 29V VREF,HV Recommended Operating Range for External Reference at ENA 1) Condition VREF,EXT Internal Divider Ratio between ENA and IR in case of external Reference Voltage 1.2V < VENA < 3V NENA,DIV Internal Reference Derating Threshold for high V VS V VS rising V VS,DERATE Hysteresis for Voltage Derating Threshold V VS falling V VS,DERATE,HYST 1 V Starting Junction Temperature for internal Reference Voltage Derating*) VENA > 3.3V TJ,DERATE 138 °C Internal Reference Voltage Derating Slope*) VENA > 3.3V TJ > TJ,DERATE dVJ,DERATE -26.7 mV/K V VS = 14V VRUN = 0V IRUN,PU -40 µA RUN Bus Comparator, High Threshold VRUN,ENA 3 V RUN Bus Comparator, Low Threshold VRUN,STBY 2.5 V µs IR Driver 0.9 0.6 V VREF,NOM V 29 V 2 25 27 RUN Interface and Diagnostics RUN Pin Pullup Current to VS RUN State Change Debouncing *) Rising and falling edge tRUN,DEL 4 RUN Low Level, Nominal V VS = 14V IRUN = 2mA VS Pin ‘open’ IRUN = 2mA TJ < 125°C VRUN,DRV1 0.2 0.8 V VRUN,DRV2 1.4 2 V Current Limitation for RUN driving 'low' VRUN = 5V IRUN,LIM 10 22 LEDx Short Circuit Detection Threshold Relative to VGND VLEDx,SHORT 0.9 1 1.1 V Open Detection Threshold at LEDx, relative to nominal configured current RIRx = 12kΩ VENA > 3V 1) ILEDx,OPEN 27.5 37.5 47.5 % Open Diagnostic Enable Threshold at VS for E522.84 E522.84 1) V VS rising V VS,DIAG1 7.05 7.5 7.95 V Open Diagnostic Enable Threshold at VS for E522.85 E522.85 V VS rising V VS,DIAG2 8.5 9.0 9.5 V Open Diagnostic Enable Threshold at VS for E522.86 E522.86 1) V VS rising V VS,DIAG3 9.45 10 10.55 V Open Diagnostic Enable Threshold at VS for E522.87 E522.87 1) V VS rising V VS,DIAG4 14.2 15 15.8 Open Diagnostic Enable Threshold at VS, Hysteresis V VS falling V VS,DIAG,HYST RUN Low Level, low VS or VS Open 1) mA 0.5 V *) Not tested in production Notes on table section IR Driver 1) Take 2:1 divider at ENA into account Notes on table section Run Inrerface and Diagnostics 1) Take 2:1 divider at ENA into account This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 7/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 Electrical Characteristics (continued) (V VS = 5V to 25V, TJ= -40°C to +150°C and recommended operating range, unless otherwise noted. Typical values are at V VS = 14V and TJ = 25°C. Positive currents flow into the device pins.) Description Condition Symbol IRx Pin Open Diagnostic Threshold IIR,OPEN IRx pin short circuit Diagnostic Threshold IIR,SHORT Error Tolerance after Enabling a Channel VENA > VENA,ON VIR < VIR,DIS 2) Additional Debouncing Time in case of Error New Error deDetection during Operation*) tected Re-Diagnosis time out in case of Error Detection Min Max Unit 9 18 µA 380 µA tERR,DEB1 64 µs tERR,DEB2 4 µs ERR present, E522.8x operated 3) tERR,REDIAG 280 Typ 4.1 5.9 9.1 ms *) Not tested in production Notes on table section RUN Interface and Diagnostics 2) start up of a channel is performed within this tolerance time window 3) re-diagnosis is performed on either this timebasis or with each rising edge at ENA This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 8/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 5 Functional Description 5.1 Overview E522.84/85/86/87 family devices provide triple linear current controler for LED driving, which can optionally be operated in parallel for higher current requirements. These family members support common current configuration for all channels with a single resistor plus digital PWM dimming via fast ENA input. Various diagnostic features are provided to meet automotive requirements, together with a communication interface named “RUN” to link ICs. If linked in this way, the ICs can be operated as a combined cluster of drivers, turning ‘on’ and ‘off’ in parallel (e.g. turning all drivers ‘off’ in case of hardware failures). “Single Lamp Mode” operation is implemented to support legal requirements, e.g. regarding automotive lighting. Typical exemplary application topologies are presented in „5.7 Exemplary Application Topologies“. More information on the LEDx drivers can be found in „5.2 LED Driver“. For more details on the configuration via IR interface see „5.3 IR Driver“. A detailed overview of functional states is given in „5.4 State Diagram“. Diagnostic features are described in „5.5 RUN Interface and Diagnostics“. For more advanced features, see family members E522.80/81/82/83, which provide e.g.: - more current per channel - active failure feedback operation - additional powermanagement /-distribution options - independent current configuration per channel - independent digital dimming for each channel 5.2 LED Driver Highside drivers for LEDx provide the current configured by IR pin, reproducing the IIR with a typical amplification factor of 385:1. The LEDx outputs are monitored for short-circuit condition to GND (undervoltage) and open condition (ILEDx smaller than relative threshold ILEDx,OPEN). IR configuration is monitored separately, see diagnostic chapter 5.5 for details. For parallel operation, the total output amplification factor is 1155:1. Monitoring functions (e.g. ‘open’ detection) remain active per channel, thus a loss of a single LEDx output connection will be detected. 5.3 IR Driver ENA + 1.2V VREF,NOM ENABLE / Dimming - VREF,HV VS Overvoltage 250kΩ LEDx Current Reference + + + - 250kΩ IR Internal Temperature Derating Figure 1. IR Reference Generation This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 9/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 The interface IR is used to configure the current for all LEDx channels. The current flow in IR is multiplied to LEDx by a factor of typical 385:1. Digital dimming can be used at ENA by applying VENA > 3V or VENA < 1V. Various factors influence the reference voltage driven to IR as an output. Details are illustrated in „Figure 1. IR Reference Generation“. In nominal case (typical junction temperature, VENA > 3V) the internal reference is used. The lowest reference applied to the amplifier shown in „Figure 1. IR Reference Generation“ is used to regulate VIR. VREF VREF,NOM dVJ,DERATE Operating Range for external VREF = VENA /2 VENA,ON /2 Limited by abs. max. Ratings E522.8x disabled by ENA -40°C TJ,DERATE 150°C TJ,OT TJ Figure 2. Principle of Internal Temperature Derating The internal reference derating function implemented is rather tolerant to allow external configuration of derating by the user. It typically starts to derate the internal reference at TJ = 138°C, falling with typ. -26.7mV/K beyond this temperature. The range of operating E522.8x with external reference or external derating is shown in „Figure 2. Principle of Internal Temperature Derating“. To realize an external derating function and shutdown, it is possible to use e.g. a temperature dependent resistor divider at ENA. In the range of typically 3V down to VENA,OFF the voltage VENA/2 is used to drive VIR. Falling below VENA,OFF disables E522.8x, restarting with VENA,ON. This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 10/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 5.4 State Diagram Global, Prio 1: VVS < VVS,ERR Global, Prio 4: RUN pullup enabled and RUN state 'Low' Standby Mode RUN pullup enabled LED [x] pulldown IR Driver off ERR[2:0] = 000 VS RESET RUN active low LED [x] pulldown IR Driver disabled Overtemperature Recovery Global, Pro 2: ENA Low ENA High No ERR stored Thermal Shutdown Global, Prio 3: Junction OverTemperature VVS < VVS,ERR RUN active low LED Outputs pulldown IR Driver off ERR[2:0] = 000 VVS > VVS,ERR Sleep Mode RUN active low All LED pulldown IR disabled ERR[2:0] unmodified Re-Start Counter reset RUN active low LED, IR [y] enabled for 64us *) other channels in [z] state RUN High After 64us: Channel [y] ok, ERR flag cleared Active, Full Diagnosis ERR at channel [y] RUN pullup enabled LED[x], IR driving 64us Diagnosis Tolerance for starting channels After 64us: No ERR[x] detected Active, Selective Diagnosis ENA High ERR flag stored for channel [y] Re-Start Counter Finished ( 6ms ) ERR[y] still present, Standby „Single Lamp“ Mode, Counting RUN active low All LED Outputs pulldown IR Driver disabled → ERR [y] is set Re-Start Counter running ERR detected at channel [y] Index Usage: x: Active Channel [2:0] y: Faulty Channel [2:0] z: Disabled Channel [2:0] *) „LED Open“ error diagnosis is active only in case VVS > VTST Active Mode. Normal Operation RUN High RUN pullup enabled LEDx,IR driving' Diagnosis active *) Figure 3. State Diagram E522.84/85/86/87 This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 11/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 5.5 RUN Interface and Diagnostics Diagnostic features provided in E522.8x include the monitoring of High impedant IR driver (e.g. in case of ‘open’ connection for the external configuration resistor) Short-circuit at IR driver to GND Short circuit of LEDx to GND for each channel (checking for a static threshold of VLEDx,SHORT) Open LEDx connections for each channel. E522.8x family members provide different thresholds of V VS to enable this monitor, thus avoiding wrong ‘OPEN’ error detection in case VVS is smaller than the forward voltage VLED of the LEDs Internal junction overtemperature (disabling all channels) V VS voltage monitoring for undervoltage (providing defined behavior for slow supply ramping) The LEDx driver ‘open’ detection is relative to the actual current configured at IRx. This detection is active if the supply V VS is higher than V VS,DIAGx, which is a family member specific threshold. If a defect at any of the channels is detected, it is stored for selective re-diagnosis. Dimming at ENA does not delete this information. A diagnosis cycle showing removal of the erroneous conditions or VS undervoltage reset the stored flag to ‘0’. Re-diagnosis in case of continuous operation is performed on a regular time-basis of tERR,REDIAG to allow replacement of defect loads / LEDs for such applications. A loss of VS connection for a single E522.8x is propagated via RUN being set to low, as well as for ENA being ‘low’ (e.g. in case of ‘OPEN’ failure at ENA). This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 12/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 5.6 Typical Performance Figures Figure 4. Fast Supply Step ( Startup ) Figure 5. Slow Supply Ramping Typical Startup from unsupplied to 16V, Delay to deliver current is <40µs. Dark-Blue: VS-Supply, Bright-Blue: LED voltage, Purple: Current Probe for LED current Ramping of Supply in >20ms. Bright-blue channel shows the LED driver output, dark-blue is the supply voltage at VS. Purple Curve is the according current probed. Figure 6. Very fast VS Stepresponse ( 8V to 25V ) Very steep rising and falling VS Supply, 8V to 25V at VS, Risetime approx. 14µs. Purple Channel: LED Current Bright-Blue Channel: LED Voltage Dark-Blue Channel: VS Supply Voltage (Step) This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 13/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 5.7 Exemplary Application Topologies This chapter provides various exemplary Application topologies and use-cases for E522.84/85/86/87. From basic setup to full automotive setup there are typical options given, which of course can be combined to more complex systems. Please make sure, that examples taken from this chapter fulfil your application requirements. 5.7.1 Basic Application Topology RUN LED1 VS LED2 GND ENA E522.84 LED3 IR Figure 7. Basic Topology This is an exemplary basic implementation using E522.84/85/86/87 Family members. The basic features are Permanent operation of all LED strings Common current configuration for all LED strings by single resistor Channels diagnostics are always active, switching all Outputs in common ‘on’ or ‘off’ Capacitors at the LED loads are used to improve PSRR of the circuit 5.7.2 Six Channel Cluster and Supply-Dimming RUN LED1 VS LED2 GND ENA E522.84 LED3 IR RUN LED1 VS LED2 GND ENA E522.84 LED3 IR Figure 8. Six Channel Cluster This Application is a six-channel cluster, that makes use of the following product features: - Digital Dimming via supply line is possible. ICs remain powered by reverse polarity protection and input capacitors, consuming only very low sleep mode currents during supply low phase - RUN connection is used to propagate a potential failure information between ICs, imitating the behaviour of a bulb if necessary (either all ‘on’ or all ‘off’) - Capacitors at LEDs are not drawn, but can improve e.g. power supply rejection ratio or ESD behaviour This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 14/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 5.7.3 Thermal Management and Parallel Operation RUN LED1 VS LED2 GND ENA E522.84 LED3 IR T° Figure 9. Thermal Application Topology In this setup more thermal handling options are presented: Temperature depending divider at ENA provides derating, if the divided voltage falls below the internal reference of E522.8x Parallel operation of two channels to increase output current An optional fail-indicator LED is connected to RUN, which may be useful e.g. to identify defect PCBs. The build in current limitation of the RUN pin defines the current Capacitors parallel to loads improve PSRR and thus the lifetime of the LEDs in case of e.g. ESD events This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 15/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 5.7.4 Automotive Cluster Application RUN LED1 VS LED2 GND ENA E522.84 LED3 IR RUN LED1 VS LED2 GND ENA E522.84 LED3 IR Figure 10. Automotive Cluster Application The application shows additional elements, that are typically useful for an automotive environment. Further elements may be necessary (e.g. input protection or suppressor diodes as required). Features of this setup are: Digital dimming via battery line, e.g. from control modules highside driver RUN diode-Or bus for failure indication, making use of central bus pullup resistor to VS (If the bus has no further connections than E522.8x ICs, it can be omitted. Just leave pins RUN open in this case) RUN bus configured as drawn: Only strings of a single IC will switch ‘off’ in case of a diagnostic event. If the diode is replaced by a direct connection, the complete cluster can be switched ‘off’. The central pullup is not necessary in this case (hint: ENA ‘low’ leads to active low RUN) The lower IC in „Figure 10. Automotive Cluster Application“ uses balancing resistors to equally share its current between Channel 1 and 3, thus less than three channels are possible with one IC. Alternatively, see Elmos datasheet E522.80 for a compatible IC with more sophisticated options to disable channels Various protective devices added for automotive environment, like e.g. damping R-C network for inductive supply line Topology can be extended by further devices of the E522.8x family to build larger clusters This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 16/20 QM-No.: 25DS0137E.00 Date: 26.03.2014 PACKAGE OUTLINE SPECIFICATION Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 8 Lead Small Outline Package (150mil) 6 Package Reference Author: ASto with exposed pad QM-No.: 08SP0641.03 (SO8n - ep) All devices are available in a Pb free, RoHs compliant SOIC8N-EP plastic package according to JEDEC MS-012-F, variant BA. The package is classified to Moisture Sensitivity Level 3 (MSL 3) according to JEDEC J-STD-020 with a soldering peak temperature of (260+5)°C. Package Outline and Dimensions are according JEDEC MS-012-F, variant BA Page 1 of 2 This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 17/20 QM-No.: 25DS0137E.00 8 Lead Small Outline Package (150mil) Author: ASto with exposed pad QM-No.: 08SP0641.03 Triple 60mA Linear LED Controller(SO8n - ep) E522.84/85/86/87 Preliminary Information - Jan 21, 2015 Common dimensions Description Symbol mm inch min typ max min typ max -- -- 0.067 Package height A -- -- 1.70 Stand off A1 0.00 -- 0.15 0.000 -- 0.006 Package body thickness A2 1.25 -- -- 0.049 -- -- Width of terminal leads, inclusive lead finish b 0.31 -- 0.51 0.012 -- 0.020 Thickness of terminal leads, inclusive lead finish c 0.10 -- 0.25 0.004 -- 0.010 Package length D 4.900 BSC 0.193 BSC Package width E 6.000 BSC 0.236 BSC Package body width E1 3.900 BSC 0.154 BSC Lead pitch e Length of terminal for soldering to substrate L 0.4 -- 1.27 0.016 -- 0.050 Body chamfer (45°) h 0.25 -- 0.50 0.010 -- 0.020 Angle of lead mounting area phi [°] 0 -- 8 0 -- 8 Mold release angle phi1 [°] 5 -- 15 5 -- 15 Number of terminal positions 1.270 BSC N 0.050 BSC 8 8 Variable dimensions Assembler C L1 L2 V C L1 L2 V Exposed pad length D1 (BSC) 3,302 2,667 1,651 3,099 0,130 0,105 0,065 0,122 Exposed pad width E2 (BSC) 2,286 1,778 1,651 2,413 0,090 0,070 0,065 0,095 Note: the mm values are valid, the inch values contains rounding errors Note 1: for assembler specific pin1 identification please see QM-document 08SP0363.xx (Pin 1 Specification) 7 Functional Safety The development of this product is based on a process according to an ISO/TS16949 certified quality management system. Functional safety requirements according to ISO 26262 have not been submitted to Elmos and therefore have not been considered for the development of this product. Page 2 of 2 This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 18/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 8 Record of Revision Chapter - Revision .00 Change and Reason for Change Initial revision Date Jan 21, 2015 Released Elmos DHOE/ZOE This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 19/20 QM-No.: 25DS0137E.00 Triple 60mA Linear LED Controller E522.84/85/86/87 Preliminary Information - Jan 21, 2015 WARNING – Life Support Applications Policy Elmos Semiconductor AG is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing Elmos Semiconductor AG products, to observe standards of safety, and to avoid situations in which malfunction or failure of an Elmos Semiconductor AG Product could cause loss of human life, body injury or damage to property. In the development of your design, please ensure that Elmos Semiconductor AG products are used within specified operating ranges as set forth in the most recent product specifications. 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Elmos Semiconductor AG reserves the right to change specifications and information herein without notice. Elmos Semiconductor AG Data Sheet 20/20 QM-No.: 25DS0137E.00