EVALUATION KIT AVAILABLE MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection General Description The MAX16823 three-channel LED driver operates from a 5.5V to 40V input voltage range and delivers up to 100mA per channel to one or more strings of highbrightness LEDs (HB LEDs). Each channel’s current is programmable using an external current-sense resistor in series with the LEDs. Three DIM inputs allow a wide range of independent pulsed dimming in addition to providing the on and off control of the outputs. Waveshaping circuitry reduces EMI while providing fast turn-on and turn-off times. The MAX16823 is well suited for automotive applications requiring a high-voltage input and is able to withstand load-dump events up to 45V. On-board pass elements minimize external components while providing ±5% LED current accuracy. Additional features include an active-high, open-drain LEDGOOD output for open LED detection, a +3.4V (±5%) regulated output with 4mA output current capability, short-circuit and thermal protections. The MAX16823 is available in thermally enhanced 5mm x 5mm, 16-pin TQFN-EP and 16–pin TSSOP-EP packages and is specified over the -40°C to +125°C automotive temperature range. Features ●● 5.5V to 40V Operating Range ●● Adjustable Constant Output Current (5mA to 100mA and Up to 2A with External BJT) ●● ±5% Output Current Accuracy ●● Open LED Detection ●● Three Independent High-Voltage DIM Inputs ●● Three Integrated Pass Elements with Low Dropout Voltage (0.7V max) ●● Undervoltage Lockout ●● Output Short-Circuit Protection ●● 3.4V Voltage Regulator with 4mA Capability ●● Accurate, Low 203mV Current Sense ●● Overtemperature Shutdown ●● -40°C to +125°C Operating Temperature Range Ordering Information appears at end of data sheet. Typical Operating Circuit VIN Applications ●● Automotive Exterior: Rear Combination Lights (RCLs), CHMSL CIN ●● Automotive Interior: RGB Ambient Lighting, Cluster Lighting, and LCD Backlighting IN OUT1 IN OUT2 IN OUT3 DIM1 ●● Emergency Vehicle Warning Lights DIM2 ●● Navigation and Marine Indicators REG MAX16823 DIM3 RLEDGOOD ●● Architectural and Industrial Lighting CS1 LEDGOOD CS2 LGC REG CLGC 19-0733; Rev 4; 8/15 CREG CS3 GND CS1 CS2 CS3 MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection Absolute Maximum Ratings IN to GND...............................................................-0.3V to +45V OUT1, OUT2, OUT3, DIM1, DIM2, DIM3 to GND...........................................-0.3V to (VIN + 0.3V) REG, LGC, LEDGOOD to GND...............................-0.3V to +6V CS1, CS2, CS3 to GND........................................-0.3V to +0.5V OUT1, OUT2, OUT3 Short Circuited to GND Duration (VIN + 16V)......................................... 60min Maximum Current into Any Pin (except IN, OUT1, OUT2, OUT3)..................................±20mA Continuous Power Dissipation (TA = +70°C) 16-Pin TQFN 5mm x 5mm (derate 33.3mW/°C above +70°C)..........................2666mW 16-Pin TSSOP (derate 26.1mW/°C above +70°C).. 2088.8mW Operating Temperature Range.......................... -40°C to +125°C Junction Temperature.......................................................+150°C Storage Temperature Range............................. -65°C to +150°C Lead Temperature (soldering, 10s).................................. +300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (VIN = 12V, CREG = 0.1μF, IREG = 0, CLGC = 15nF, VDIM1 = VDIM2 = VDIM3 = 3.4V, RCS_ = 2.85Ω from CS_ to GND, TJ = TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Supply Voltage Range VIN Undervoltage Lockout UVLO Ground Current Guaranteed Output Current IG MIN TYP 5.5 40 V 4.9 5.4 VIN falling 4.0 4.6 5.2 1.5 3 IOUT1 = IOUT2 = IOUT3 = 70mA 100 IOUT_ = 70mA, 6.5V ≤VIN ≤ 40V 0.3 0.7 IOUT_ = 70mA, 5.5V ≤ VIN ≤ 6.5V 0.3 0.8 VOUT_ = 0V V mA mA 5 Output Current Slew Rate Short-Circuit Current UNITS 4.4 5mA ≤ IOUT_ ≤ 70mA ∆VDO MAX VIN rising IOUT LED Current-Sense Accuracy Dropout Voltage (Note 2) CONDITIONS % V 8 mA/µs 180 mA LEDGOOD LEDGOOD Output Logic Low VOL ISINK = 2mA LGC Pullup Resistor 65 100 0.4 V 135 kΩ LGC Input Upper Threshold VUTH 2.53 V LGC Input Lower Threshold VLTH 0.8 V LGC Pulldown Current VLGC > VUTH LGC Clock Period CLGC = 15nF 20 0.77 1.5 mA 2.3 ms -0.1 +0.1 µA 2.4 VIN V 0.6 V 3 kHz DIMMING INPUT (DIM1, DIM2, DIM3) DIM_ Logic-Input Bias Current DIM_ Input-Voltage High IDIM_ DIM_ Input-Voltage Low DIM_ Frequency www.maximintegrated.com 0 Maxim Integrated │ 2 MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection Electrical Characteristics (continued) (VIN = 12V, CREG = 0.1μF, IREG = 0, CLGC = 15nF, VDIM1 = VDIM2 = VDIM3 = 3.4V, RCS_ = 2.85Ω from CS_ to GND, TJ = TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS OUTPUTS (OUT1, OUT2, OUT3) (Note 3) Turn-On Time DIM_ rising edge to 90% of OUT_ current 12 28 µs Turn-Off Time DIM_ falling edge to 10% of OUT_ current 8 18 µs Output Current Rise Time 10% to 90% 7 18 µs Output Current Fall Time 90% to 10% 6 15 µs 203 213 mV +1.2 µA CURRENT SENSE Regulated CS_ Voltage VCS_ 5mA ≤ IOUT_ ≤ 70mA Input Current (CS1, CS2, CS3) 193 Current out of CS_ OVERTEMPERATURE PROTECTION (Note 4) Thermal Shutdown Temperature 155 °C Thermal Shutdown Hysteresis 23 °C 3.4V REGULATOR (REG) Output Voltage VREG REG Short-Circuit Current 0 ≤ IREG ≤ 4mA 3.275 3.41 3.547 3.221 3.38 3.547 VREG = 0V 13 V mA Note 1: All devices 100% production tested at TJ = +25°C. Limits over the operating temperature range are guaranteed by design. Note 2: Dropout is measured as follows: Connect a resistor from OUT_ to CS_. Connect RCS_ = 2.85Ω from CS_ to GND. Set VIN = VOUT + 3V (record VOUT as VOUTA). Reduce VIN until VOUT = 0.97 x VOUTA (record as VINB and VOUTB). VDO = VINB - VOUTB. Note 3: Output current rise and fall times are measured with a 62Ω series resistor from OUT_ to CS_. Note 4: Overtemperature protection does not function if the output of the 3.4V reference (REG) is shorted to ground. Typical Operating Characteristics (VIN = 12V, CREG = 0.1μF, IREG = 0, VLGC = unconnected, connect RCS_ = 2.85Ω from CS_ to GND. Connect OUT_ to CS_ through a resistor, TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) 60 50 40 ILOAD = 35mA 0.209 0.208 0.207 0.206 0.205 0.204 30 0.203 20 0.202 10 0 ILOAD = 5mA -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C ) www.maximintegrated.com 0.201 0.200 OUTPUT CURRENT vs. INPUT VOLTAGE 90 OUTPUT CURRENT (mA) 70 ILOAD = 70mA 100 MAX16823 toc02 80 VCS_ (V) OUTPUT CURRENT (mA) 90 VCS_ vs. OUTPUT CURRENT 0.210 80 IOUT = 70mA 70 60 50 40 30 20 IOUT = 5mA 10 0 10 20 30 40 50 OUTPUT CURRENT (mA) 60 70 MAX16823 toc03 OUTPUT CURRENT vs. TEMPERATURE MAX16823 toc01 100 0 0 5 10 15 20 25 30 INPUT VOLTAGE (V) 35 40 Maxim Integrated │ 3 MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection Typical Operating Characteristics (continued) (VIN = 12V, CREG = 0.1μF, IREG = 0, VLGC = unconnected, connect RCS_ = 2.85Ω from CS_ to GND. Connect OUT_ to CS_ through a resistor, TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) 0.7 0.6 0.5 0.4 ILOAD = 70mA 0.3 0.2 1.0 0.9 0.8 VCS_ vs. IREG VIN = 12V MAX16823 toc06 ILOAD = 0 3.3 ILOAD = 4mA ILOAD = 1mA 3.2 3.1 VIN = 5.5V 3.0 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) 330Hz DIMMED OPERATION VREG vs. VIN MAX16823 toc08 MAX16823 toc09 3.44 3.43 3.42 ILOAD = 70mA VREG vs. TEMPERATURE 3.4 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) 3.45 MAX16823 toc07 0.210 0.209 0.208 0.207 0.206 0.205 0.204 0.203 0.202 0.201 0.200 0.199 0.198 0.197 0.196 0.195 3.5 VIN = 40V VIN = 20V 1.1 0.6 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) VREG (V) VCS_ (V) 1.2 0.7 0.1 0 VDIM1 = VDIM2 = VDIM3 = 0V 1.3 SUPPLY CURRENT (mA) 0.8 SUPPLY CURRENT vs. TEMPERATURE MAX16823 toc05 MAX16823 toc04 0.9 DROPOUT VOLTAGE (mV) 1.4 VREG (V) DROPOUT VOLTAGE vs. TEMPERATURE 1.0 ILOAD = 70mA VIN = 12V, DIM PULSED AT 33Hz VDIM (1% DUTY CYCLE) 2V/div IREG = 0 3.41 0V ILED 50mA/div 3.40 3.39 IREG = 1mA 3.38 IREG = 4mA 3.37 0A 3.36 0 1 2 3 4 5 6 IREG (mA) 7 8 9 10 200Hz DIMMED OPERATION (EXPANDED) MAX16823 toc10 VDIM 2V/div 3.35 0 5 10 15 20 25 VIN (V) 20µs/div 40 MAX16823 toc11 ILOAD = 70mA VIN = 12V, DIM PULSED AT 200Hz (50% DUTY CYCLE) LEDGOOD RESPONSE TIMES MAX16823 toc12 VIN = 12V CLGC = 15nF VDIM 2V/div VLGC 5V/div 0V 0A 10µs/div VDIM 5V/div 0V VLEDGOOD 5V/div 0V 0V ILOAD 50mA/div ILOAD = 70mA 0A VIN = 12V, DIM PULSED AT 200Hz (50% DUTY CYCLE) www.maximintegrated.com 35 200Hz DIMMED OPERATION (EXPANDED) 0V ILOAD 50mA/div 10µs/div 30 2ms/div Maxim Integrated │ 4 MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection CS3 GND REG TOP VIEW CS2 Pin Configurations 12 11 10 9 OUT2 1 8 CS1 13 OUT3 14 MAX16823 OUT2 15 OUT1 16 TOP VIEW *EP + LGC 7 IN 6 IN 5 IN 2 3 4 DIM1 DIM2 DIM3 LEDGOOD TQFN 16 OUT3 OUT1 2 DIM1 3 DIM2 4 15 CS1 MAX16823 14 CS2 13 CS3 DIM3 5 12 GND LEDGOOD 6 11 REG IN 7 IN 8 1 + *EP = EXPOSED PAD. 10 LGC *EP 9 IN TSSOP Pin Description PIN NAME FUNCTION 3 DIM1 Dimming Input 1. DIM1 is a low-frequency dimming input for channel 1. A logic-low turns off OUT1 and a logic-high turns on OUT1. 2 4 DIM2 Dimming Input 2. DIM2 is a low-frequency dimming input for channel 2. A logic-low turns off OUT2 and a logic-high turns on OUT2. 3 5 DIM3 Dimming Input 3. DIM3 is a low-frequency dimming input for channel 3. A logic-low turns off OUT3 and a logic-high turns on OUT3. 4 6 LEDGOOD Open LED Output. LEDGOOD is an open-drain output. A logic-high indicates the LED connection is good in all three channels. A logic-low indicates an open LED connection. See the LEDGOOD section. 5, 6, 7 7, 8, 9 IN 8 10 LGC LED Detection-Timing Setting. Connect a capacitor from LGC to ground to set the delay time for LEDGOOD. TQFN TSSOP 1 Positive Input Supply. Bypass with a 0.1µF (min) capacitor to GND. Connect all IN pins together. 9 11 REG 3.4V Voltage Regulator. Connect a 0.1µF capacitor from REG to GND. 10 12 GND Ground 11 13 CS3 Channel 3 Sense Amplifier Positive Input. Connect the current-sense resistor between CS3 and GND to program the output current level for channel 3. 12 14 CS2 Channel 2 Sense Amplifier Positive Input. Connect the current-sense resistor between CS2 and GND to program the output current level for channel 2. 13 15 CS1 Channel 1 Sense Amplifier Positive Input. Connect the current-sense resistor between CS1 and GND to program the output current level for channel 1. 14 16 OUT3 Current Regulator Output 3 15 1 OUT2 Current Regulator Output 2 16 2 OUT1 Current Regulator Output 1 — — EP www.maximintegrated.com Exposed Pad. Connect EP to a large-area ground plane for effective power dissipation. Do not use as the IC ground connection. Maxim Integrated │ 5 MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection Detailed Description of Hardware The MAX16823 three-channel current regulator operates from a 5.5V to 40V input voltage range and delivers up to 100mA per channel to one or more strings of HB LEDs. The output currents are programmable using external current-sense resistors in series with the LEDs. Three DIM inputs allow a wide range of independent pulsed dimming in addition to providing the on and off control of the outputs. The MAX16823 offers an LED-GOOD output that indicates an open-circuit condition when one or more LED channels are open. Integrated pass elements minimize external components while providing ±5% output current accuracy. Additional features include a 3.4V (±5%) voltage regulator with 4mA output current capability, short-circuit and thermal protection. The MAX16823 uses a feedback loop to linearly control the current from each output. The voltage across each sense resistor is compared to a fixed reference voltage and the error is amplified to drive the internal power pass device for a particular channel. See the Block Diagram. The regulation point is factory-set at 203mV. The regulated current is adjusted by the value of RCS_. The MAX16823 is a constant-current LED driver internally optimized for driving the impedance range expected from one or more HB LEDs. 3.4V Regulator (REG) The MAX16823 includes a fixed 3.4V voltage regulator that delivers up to 4mA of load current for auxiliary applications throughout the 5.5V to 40V input voltage range. Connect a 0.1μF compensation capacitor from REG to ground. Shorting REG to ground disables the thermal shutdown. Thermal Protection The MAX16823 enters a thermal-shutdown mode in the event of overheating. This typically occurs in overload or output short-circuit conditions. When the junction temperature exceeds TJ = +155°C, the internal thermal protection circuitry turns off the series pass elements. The MAX16823 recovers from thermal-shutdown mode once the junction temperature drops by 23°C. The part will therefore protect itself by low-frequency thermal cycling in the event of a short-circuit or overload condition. www.maximintegrated.com Applications Information Programming the LED Current The MAX16823 uses sense resistors to set the output current for each channel. To set the LED current for a particular channel, connect a sense resistor across the corresponding current-sense input (CS_) and GND. For optimal accuracy, connect the low-side of the currentsense resistors to the IC’s ground pin with short traces. The value needed for the sense resistor for a given current can be calculated with the equation below: VCS_ (V) R CS_ (Ω ) = I OUT_ (A) where VCS_ is 203mV and IOUT_ is the desired LED current (ILED). Input-Voltage Considerations For proper operation, the minimum input voltage must always be: VIN(MIN) ≥ VCS_(MAX) + VFT(MAX) + VDO(MAX) where VFT(MAX) is the total forward voltage of all seriesconnected LEDs. The minimum operating voltage of the device is 5.5V. LEDGOOD The MAX16823 features an active-low, open-drain LEDGOOD output that goes low either when one or more LED channels are open or when a signal at any of the dimming inputs remains low for a period greater than the programmed LEDGOOD delay time tDELAY. Program tDELAY with a capacitor connected between LGC and ground. The LEDGOOD output goes low after the programmed delay period tDELAY has elapsed. Use the following formula to set the delay period: tCK = 112,000 x CLGC (F) 4 x tCK < tDELAY < 6 x tCK where CLGC is the capacitor connected between LGC and ground. The LEDGOOD output goes low during the thermal shutdown. The minimum recommended value of the capacitance that can be used on the LGC pin is 100pF. Maxim Integrated │ 6 MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection Block Diagram REG UVLO IN IN I_REG IN IN OUT1 BANDGAP CS1 GND DIM1 IN MAX16823 THERMAL SHUTDOWN I_REG OUT2 DIM2 CS2 IN I_REG OUT3 DIM3 LEDGGOOD LGC CS3 LEDGOOD DETECTOR Pulse-Dimming Inputs (DIM_) The MAX16823 features pulsed or chopped-current dimming inputs (DIM_) to chop the LED current and to adjust the brightness. DIM_ also serves as an active-high enable input. A logic-low at DIM_ turns off OUT_ and a logic-high turns on OUT_. If the signal at DIM stays low more than the programmed LEDGOOD delay time, LEDGOOD goes low (Figure 1). www.maximintegrated.com Two Brightness Levels for TAIL/STOP Lights Figure 2 shows the PWM dimming operation for the MAX16823 with an ICM7555 timer. The ICM7555 provides an adjustable duty cycle using two external resistors and a capacitor. In TAIL operation, the output of the ICM7555 feeds into DIM and lights up the LEDs. The LED’s brightness depends on the duty cycle of the ICM7555. When VSTOP is present, DIM is pulled up to VSTOP. The Maxim Integrated │ 7 MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection PWM dimming operation is disabled and the LEDs light up to full brightness. See the ICM7555 data sheet for formulas to calculate the dimming frequency and the duty cycle. Outputs Latch-Off Figure 3 shows a circuit with DIM1, DIM2, DIM3, and LEDGOOD connected through a resistor to VREG. This circuit is useful for applications that require all outputs to latch off when one of the LEDs opens. The MAX16823 resumes current regulation again through power cycling, once the fault condition is removed. Other Applications The application circuit in Figure 4 implements a two-level brightness current for TAIL/STOP lights. In TAIL operation, Q1 is off and RCS1 sets the output current. In STOP operation, Q1 turns on and the output current is set by a parallel combination of RCS1 and R2. Figure 5 shows an application circuit with the MAX16823 using a single BJT to provide high output current. For proper operation: VIN(MIN) > VBE(MAX) + VFT(MAX) + VCS_ + VDO(MAX) For minimized dropout, the LEDs can be placed in the collector. tON DIM tOFF LEDGOOD GOES LOW WHEN tOFF > tDELAY LEDGOOD Figure 1. LEDGOOD Timing Delay STOP D1 TAIL OUT3 OUT2 IN D4 OUT1 C1 R1 REG 0.1µF MAX16823 R2 D2 DIS TH TRG CS1 IN OUT R3 DIM1 GND RCS1 DIM2 D3 100kΩ CS2 DIM3 RCS2 C2 ICM7555 LEDs CS3 GND RCS3 Figure 2. PWM Dimming Operation with ICM7555 www.maximintegrated.com Maxim Integrated │ 8 MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection VIN OUT3 OUT2 IN CIN VREG OUT1 R1 MAX16823 DIM1 LEDs LEDs CS1 DIM2 LEDs RCS1 DIM3 CS2 LEDGOOD RCS2 REG CS3 GND CREG RCS3 Figure 3. Output_ Latch-Off STOP D1 D2 OUT3 OUT2 IN TAIL TAIL STOP/TAIL OUT1 MAX16823 DIM1 LEDs CS1 DIM2 R2 DIM3 CIN TAIL LEDs R3 LEDs RCS1 Q1 R1* CS2 REG CREG RCS2 GND CS3 RCS3 *R1 = 100kΩ Figure 4. Two-Brightness Level with Current Level Switch for TAIL/STOP Lights www.maximintegrated.com Maxim Integrated │ 9 MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection Preload Current Figure 6 shows the MAX16823 with a preload circuit. In the circuit, the BJT, RPRELOAD, and REG generate a preset load current. The preset load current IPRESET is determined with the following formula: VIN Q1 OUT_ IN CIN IPRESET = REG C2 LEDs MAX16823 This circuit is used with older body controllers that monitor minimum RCL current to detect failures. PWM DIMMING CS_ DIM_ VREG − 0.7V R PRELOAD RCS_ GND Figure 5. Increased LED Current (Amper Range) with a Single BJT STOP TAIL CIN IN OUT1 IN OUT2 IN OUT3 TAIL TAIL STOP DIM1 DIM2 100kΩ MAX16823 DIM3 CS1 100kΩ LGC CS2 REG CLGC RPRELOAD CS3 CREG GND RCS1 RCS2 RCS3 Figure 6. Preload Current Setting www.maximintegrated.com Maxim Integrated │ 10 MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection Chip Information Ordering Information PROCESS: BiCMOS-DMOS PART Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 16 TQFN-EP T1655+3 21-0140 90-0072 16 TSSOP U16E+3 21-0108 90-0120 www.maximintegrated.com TEMP RANGE PIN-PACKAGE MAX16823ATE+ -40°C to +125°C 16 TQFN-EP* MAX16823ATE/V+ -40°C to +125°C 16 TQFN-EP* MAX16823AUE+ -40°C to +125°C 16 TSSOP-EP* MAX16823AUE/V+ -40°C to +125°C 16 TSSOP-EP* +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. /V denotes an automotive qualified part. Maxim Integrated │ 11 MAX16823 High-Voltage, 3-Channel Linear High-Brightness LED Driver with Open LED Detection Revision History REVISION NUMBER REVISION DATE PAGES CHANGED 0 1/07 Initial release — 1 3/07 Released TQFN package 1 2 10/08 Updated General Description, Features, EC table, and Detailed Description 3 9/09 Added automotive packages 4 8/15 Updated LEDGOOD and Package Information sections DESCRIPTION 1, 2, 6 1 6, 11 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2015 Maxim Integrated Products, Inc. │ 12