CL88031T-E/MF

CL88030/31 Sequential Linear LED Driver with Four or Six Taps Features Description • Suitable for 120VAC/230VAC/277VAC Nominal Input Voltage - ± 15% input voltage tolerance recommended • Targeted for 2W and Greater Output Power • Programmable Overtemperature Protection - Provides gradual reduction in light output with increasing temperature • Active Line Regulation - Provides fairly constant output power over variations in AC line voltage - Adjustable “knee” of regulation • 4 Taps(CL88030) or 6 Taps(CL88031) with Two Current Set Resistors - Allows optimization of THD • Optional Reduced Flicker Index - Provides near-continuous power to the LEDs - Reduces strobing - Uses an external capacitor • Compatible with Phase-cut Dimming, both Leading-edge and Trailing-edge • Uses a Thermally Enhanced DFN-10 Package with Bottom Heatslug - No high voltage Pins - Shunt regulator input - Power dissipation is in the external FETs and LEDs, not in the IC The CL88030T and CL88031T LED Driver Integrated Circuits (ICs) are intended offline sequential linear LED drivers designed to provide LED power from a utility voltage input. The CL88030/31 devices are designed to drive a long string of inexpensive, low-current LEDs directly from the AC mains. A basic driver circuit consists of Microchip’s CL88030/31 LED driver IC, four power FETs (six if using the CL88031), four resistors, two capacitors, and a bridge rectifier. Additional components are optional for various levels of transient protection. Adding an inexpensive NTC-thermistor assures over temperature protection (OTP). No EMI filters or power factor correction circuits are needed (unless the optional flicker-reduction feature is desired). A string of series/parallel LEDs is tapped at four (or six) locations, called “taps”. Linear current regulators sink current at each tap through a single control point and are sequentially turned on and off. High efficiency is achieved by shutting off upstream regulators when downstream regulators achieve regulation. This makes controlling overall input current easier than trying to control multiple current paths by tracking the input sine wave voltage. The CL88030/31 uses a self-commutation technique using only the tap currents themselves; this technique inherently provides smooth transitions from one regulator to the next, without relying on tap voltages or the rectified AC to coordinate the transitions. Applications • LED lamps • LED lighting fixtures Pin Diagram CL88030T 3 x 3 DFN* GT1 1 GT2 2 GT3 3 GT4 4 NC 5 EP 11 CL88031T 3 x 3 DFN* 10 ALR GT1 1 9 BIAS GT2 2 8 OTP 7 CS GT3 3 6 NC GT4 4 GT5 5 10 ALR EP 11 9 BIAS 8 OTP 7 CS 6 GT6 * Includes Exposed Thermal Pad (EP); see Table 2-1  2018 Microchip Technology Inc. DS20006049A-page 1 CL88030/31 TYPICAL CL88030T APPLICATION CIRCUIT 573 %5 029 573 5%,$6 5$/5 &$/5 *7 $/5 5$/5 *7 *7 *7 &/ %,$6 &%,$6 273 *1' &6 527 5&6 52: 517& CL88030 INTERNAL BLOCK DIAGRAM %,$6 *7 *7 *7 *7 9%,$6 9$5() .7$3 >Z 5$6 5$) NŸ NŸ KdW .7$3 9%,$6 528 9/,0 .7$3 NŸ 52/ NŸ 52) NŸ *1' DS20006049A-page 2 &6  2018 Microchip Technology Inc. CL88030/31 TYPICAL CL88031T APPLICATION CIRCUIT AND BLOCK DIAGRAM (Note) 573 %5 029 573 5%,$6 %,$6 &%,$6 &/ &$/5 5$/5 5$/5 *7 *7 *7 *7 *7 9%,$6 9$5() >Z 5$6 5$)  NŸ NŸ 527 *7 KdW 9%,$6 528 9/,0 NŸ 52: 517& 52/ NŸ 52) NŸ &6 *1' Note: With optional ripple reduction circuit.  2018 Microchip Technology Inc. DS20006049A-page 3 CL88030/31 1.0 ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS GT1-4 (and GT5-6 on CL88031T)...................–0.5V to (BIAS + 0.5V) OTP, ALR, CS......................................... –0.3V to 5.5V BIAS ....................................................... –0.3V to 13V Maximum Current into BIAS pin .........................10 mA Operating Junction Temperature ....... –40°C to +125°C Lead Soldering Temperature for 10s ...................... 300 Storage Temperature......................... –65°C to +150°C ESD Voltage in any pin ........................... 2000V(HBM) 1.1 Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions, above those indicated in the operational listings of this specification, is not intended. Exposure to maximum rating conditions for extended periods may affect device reliability. ELECTRICAL SPECIFICATIONS TABLE 1-1: ELECTRICAL CHARACTERISTICS Electrical Specifications: Unless otherwise specified, all specifications are for TA = TJ = +25°C. IBIAS = 1.5 mA. ALR pin open, OTP = 5V unless otherwise noted. Boldface specifications apply over the full temperature range TA = TJ = –15°C to +95°C. Parameters Gate Output Low (all GTx), VCS = 2.0V Gate Output High (all GTx), VCS =0V Sym. Min. Typ. Max. Units 0.100 V V 12 V Conditions VGT,low VGT,high VBIAS- 1.0 VBIAS 10 IGT,high 10 Quiescent Current Consumption IBIAS,Q — Reference Voltage for Tap 4 GT3 to GT4 Current Ratio VGT4 KTAP3 1.210 0.883 1.275 0.929 1.339 0.975 V CL88030, (Note 2) CL88030, (Note 2) GT2 to GT4 Current Ratio GT1 to GT4 Current Ratio KTAP2 KTAP1 0.747 0.542 0.786 0.571 0.825 0.600 ratio CL88030, (Note 2) CL88030, (Note 2) Reference Voltage for Tap 6 GT5 to GT6 Current Ratio VGT6 KTAP5 1.210 0.912 1.275 0.960 1.339 1.008 V ratio CL88031, (Note 2) CL88031, (Note 2) GT4 to GT6 Current Ratio GT3 to GT6 Current Ratio KTAP4 KTAP3 0.893 0.846 0.940 0.890 0.987 0.935 CL88031, (Note 2) CL88031, (Note 2) GT2 to GT6 Current Ratio GT1 to GT6 Current Ratio KTAP2 KTAP1 0.741 0.494 0.780 0.520 0.819 0.546 CL88031, (Note 2) CL88031, (Note 2) Limiting Voltage from OTP, VALR= 0V,100 pF CS to GND, GT4/GT6 to CS VLIM 1.296 1.525 1.754 Voltage at BIAS pin IBIAS = 0.8,5 mA,VCS= 0V, CL88030 Voltage at BIAS pin IBIAS = 1.0,5 mA,VCS= 0V, CL88031 Gate Output High Current (all GTx) 100k GTx to GND, VCS = 0V Nominal ALR Voltage Reference, ALR pin open, VALR,nom GT4/GT6 to CS, 100 pF CS to GND ALR Voltage Ratio at GT4/GT6 ALR Voltage Ratio at GT4/GT6 KALR,HI KALR,LO 11 μA 900 1300 1.275 0.801 1.073 0.843 1.129 μA Characterization Only, Note 1 V V 0.885 1.186 ratio ratio Note 3 Note 4 OTP Response Voltage OTP 0.90 1.10 1.32 V Note 5 Note 1: Does not include GATE current, or current into ALR or OTP divider. 900μA=CL88030, 1300μA=CL88031 2: GTx connected to CS, with 100pF from CS to GND. 3: VALR = 1.776V, GT4/GT6 to CS, 100 pf CS to GND. 4: VALR = 0.863V, GT4/GT6 to CS, 100 pf CS to GND. 5: GT4/GT6 to CS (unity gain), OTP=1.658V, 100pF CS to GND measure CS/GTx, see Equation 3-3. DS20006049A-page 4  2018 Microchip Technology Inc. CL88030/31 TABLE 1-2: TEMPERATURE SPECIFICATIONS Parameters Sym Min. Typ. Max. Units Operating Temperature Range TJ -40°C — +125°C °C Storage Temperature Range TA -65°C — +150°C °C JC — +8°C — °C/W Conditions Temperature Ranges Note 1 Package Thermal Resistances Thermal Resistance, 10LD-DFN Note 1: 2: Note 2 The Operating Temperature Range is specified at the junction. The junction temperature must be computed using the thermal resistance (TR) from junction-to-case, and the case-to-ambient TR of the PCB design. Thermal resistance is measured from junction to bottom metal slug.  2018 Microchip Technology Inc. DS20006049A-page 5 CL88030/31 2.0 PIN DESCRIPTION The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN DESCRIPTION CL88030T CL88031T Pin Name 1 1 GT1 Drives the FET for the most upstream LED string 2 2 GT2 Drives the FET for the top 2 LED strings 3 3 GT3 Drives the FET for the top 3 LED strings 4 4 GT4 Drives the FET for the top 4 LED strings 5 — NC Not Connected. To be left floating. 6 — NC Not Connected. To be left floating. 7 7 CS Used to set the currents in the taps 8 8 OTP Provides remote Overtemperature Protection. 2.1 Description 9 9 BIAS Provides power to the IC using an internal shunt regulator. It is recommended to be bypassed with a low ESR ceramic capacitor (at least 1 μF) 10 10 ALR An external resistive voltage divider and capacitor provide line regulation for the tap currents 11 11 GND Circuit common electrical connection (ground) — 5 GT5 Drives the FET for the top 5 LED strings — 6 GT6 Drives the FET for the top 6 LED strings GT1 Pin Gate drive voltage connection for external power FET for the first/top LED string. 2.2 GT2 Pin 2.8 Overtemperature Protection Pin (OTP) This input is connected to a resistor/NTC-thermistor combination to reduce the LED current when the temperature becomes too high. Gate drive voltage connection for external power FET for the second LED string. 2.9 2.3 An input pin to provide voltage to the chip. The BIAS pin is the input to a shunt regulator and must be fed by a current source, not a fixed voltage. GT3 Pin Gate drive voltage connection for external power FET for the third LED string. 2.4 GT4 Pin Gate drive voltage connection for external power FET for the fourth LED string. 2.5 GT5 Pin Gate drive voltage connection for external power FET for the fifth LED string. 2.6 2.10 BIAS Pin Active Line Regulation Pin (ALR) This input pin is connected to an RC network to sense the input main voltage and regulate the LED string current against variations in AC input voltage. 2.11 Ground Terminal (GND) Reference ground for all input voltages. GT6 Pin Gate drive voltage connection for external power FET for the sixth LED string. 2.7 Current Set Pin (CS) A resistor from this pin to ground sets the LED string current. DS20006049A-page 6  2018 Microchip Technology Inc. CL88030/31 3.0 FUNCTIONAL DESCRIPTION 3.1 Introduction The CL88030/31 LED driver ICs are designed to drive a long string of inexpensive, low-current LEDs directly from the AC mains. A string of series/parallel LEDs is tapped at four (or six) locations. Linear current regulators sink current at each tap through a single control point and are sequentially turned on and off. This IC is targeted to drive a string of LEDs from a nominal utility mains input voltage and provide >2W of output power. It has an internal line regulation circuit to regulate the output power as the line voltage changes from minimum to maximum. It also includes a remote Overtemperature Protection which allows thermal de-rating of the output power using a remote NTC to sense the LED or lamp temperature. 3.2 Principle of Operation The CL88030 employs a very simple method of implementing single-point control and self-commutation, as shown in Figure 3-1. The single current sense resistor to ground (RCS) comprises single-point control. Each tap’s error amplifier shares this single control point, although only one err amp is active at any one time. Initially, VCS is at 0V, causing all the current regulators to be turned on but not conducting. Once the rectified AC rises high enough to forward bias the first LED string segment, the first current regulator begins conducting. Eventually it achieves regulation. At this point VREF1 and VCS are in equilibrium. As the rectified AC continues to rise, the next LED segment becomes forward biased. Since the second regulator’s reference voltage (VREF2) is higher than VCS, the second regulator is already on and begins conducting (although not regulating), injecting current (ITAP2) into the single control point, raising the VCS voltage. The first regulator responds to the increase in VCS by reducing ITAP1 such that VCS remains equal to VREF1. EQUATION 3-1: V REF1 I TAP1 = --------------- – ITAP2 RCS ITAP1 continues to decrease as ITAP2 increases. When the rectified AC rises sufficiently for the second regulator to achieve regulation, VCS increases to be equal with VREF2. With VCS now greater than VREF1, the first regulator is effectively shut off and the second regulator takes over. This repeats for the other taps and also works in reverse as the rectified AC passes the peak and begins decreasing. This simple self-commutating mechanism and single-point control automatically sequences the current regulators and assures smooth tap-to-tap transitions. 3.2.1 *7 *7 *7 *7 95() 95() 95() 95() &6 5&6 FIGURE 3-1: ACTIVE LINE REGULATION (ALR) Without compensating for line voltage variations, as the AC voltage increases, downstream LED segments become active. In addition, the dwell time at the higher tap currents increases as AC voltage goes up. This causes brightness to increase with AC voltage, resulting in poor line regulation. The ALR circuit maintains fairly constant output power over variations in AC line voltage. It is not a closed loop system that directly monitors and corrects output power. Instead, it monitors the voltage applied to the LED string and uses it to adjust the reference voltage provided by the OTP circuit. The circuit used for achieving the active line regulation is shown in Figure 3-2. Tap Commutation. Each current regulator has its own reference voltage, derived from a resistive voltage divider such that: VREF4 > VREF3 > VREF2 > VREF1 9$5() 9 95() 5$/5 5$/5 FIGURE 3-2:  2018 Microchip Technology Inc. $/5 5$) 5$6 NŸ NŸ ALR Circuit. DS20006049A-page 7 CL88030/31 Under normal operation (OTP not activated) the OTP limiting voltage is essentially the reference voltage used to set the tap currents. The ALR circuit adjusts this voltage up or down to compensate for variations in the AC line voltage as represented by the voltage at the ALR pin. EQUATION 3-2: V REF4 VALR – 1.275V = 1.275V –  ------------------------------------  120k  300k  The external resistor divider at the ALR pin is usually chosen such that the average voltage at the pin is 1.275V at nominal 120 VAC input. The ALR divider is connected after the first LED segment to increase its sensitivity to changes in the AC line voltage. The function of the limiter circuit is three-fold. Except during OTP, the limiting voltage is fixed. First, during the initial application of power, the ALR filter capacitor (CALR) is at 0V. This would result in high LED current until CALR charges up. Without a limiter, this would cause a bright flash at turn-on. The second purpose of the limiter is during dimming, where the average ALR voltage will be low, causing the LED drive current to be high. This defeats the dimmer and could result in excessive currents. Lastly, during an overtemperature condition, the OTP circuit gradually lowers the limiting voltage from its fixed value. This reduces the power applied to the LEDs, lowering their temperature until an equilibrium is established. 3.2.2 OVERTEMPERATURE PROTECTION (OTP) OTP uses an inexpensive, external NTC thermistor to remotely sense LED temperature. The thermistor can be located in close proximity to the LEDs, providing near-direct LED temperature monitoring. The OTP temperature is adjustable via selection of NTC resistance. It is essential that OTP operate linearly, gradually reducing output power as temperature increases. The thermistor is arranged in a full-bridge configuration with the active arm consisting of the NTC and a discrete resistor to VBIAS (Figure 3-3). The passive arm consists of internal resistors. The thermistors’ resistance versus temperature curve asymptotically approaches 0 as temperature rises. To provide a well-defined window between the threshold temperature and the extinguishing temperature, a small segment of the thermistors’ resistance-temperature curve must be used. 9%,$6 527 273 7R$/5 DPS 9%,$6 52: 517& FIGURE 3-3: 528 NŸ 9/,0 52) 52/ NŸ NŸ OTP Equivalent Circuit. ROF and the parallel combination of ROU and ROL determine OTP gain and set the width of the OTP window — the higher the gain, the narrower the window. Offset is determined by the passive arm of the bridge and sets the location of the OTP window along the temperature axis. If OTP is unused, the OTP pin should be connected to 5V, by making a resistor divider through the BIAS pin. The output of the OTP amplifier (which is used as a limit for the ALR amplifier) can be expressed as: EQUATION 3-3: V BIAS 1 1 1 V REF4 = ROF  VOTP   ---------- + ----------- + ---------- – ------------- R OF ROU R OL ROU =  2.993  VOTP –  0.3521  VBIAS   Note that in the above equation, it is assumed that the input voltage is at nominal value and there is no adjustment to the reference due to the ALR circuit. The output of the OTP amplifier is internally clamped to 1.575V, which corresponds to a voltage of 1.77V at the OTP pin. As the voltage at the OTP pin decreases to 1.686V, the output of the OTP amplifier falls to 1.275V. It is at this point, the OTP circuit starts modifying the tap currents and causes thermal derating. Using two fixed resistors and one NTC, both the breakpoint and the slope of the derating curve can be set independently. For example, consider a case with a breakpoint of 85°C with a derating curve such that the LED driver is at 20% of full power at 110°C. The NTC thermistor used is a 470 kΩ, with a Bvalue of 4500K. The NTC resistance at a given temperature (TC, expressed in °C) can be expressed as: EQUATION 3-4: R NTC Tc = R NTC 25C  e DS20006049A-page 8 1 1 – B   ------------- – ---------------------- 298K Tc + 273  2018 Microchip Technology Inc. CL88030/31 Using Equation 3-4, the corresponding NTC resistances at 85°C and 110°C are 33.4 kΩ and 14.2 kΩ. Using these NTC resistance values, ROW and ROT can then be computed assuming 11 volts VBIAS. The final set of values are provided in the Table 3-1. TABLE 3-1: OVERTEMPERATURE PROTECTION Parameter 25°C 85°C 110°C ROT 511 kΩ 511 kΩ 511 kΩ ROW 57.6 kΩ 57.6 kΩ 57.6 kΩ RNTC 470 kΩ 33.4 kΩ 14.2 kΩ VOTP 5.580V* 1.661V VOTPAMP 1.575V 1.102V *Refer to Application Notes, Section 3.2.5 FIGURE 3-4: 1.135V 3.2.3 RIPPLE REDUCTION (OPTIONAL) Low output ripple is achieved using a capacitor and four diodes. The capacitor may be one or more paralleled ceramic capacitors or a single electrolytic. Multiple ceramic capacitors may be needed due to their poor voltage coefficient. The four diodes may be obtained in a single small package.The LED and rectifier arrangement is shown in Figure 3-4. With this method, all currents, including ripple capacitor charging and discharging currents, are controlled, passing through the same single control point. This allows the input current wave-shape to be maintained and avoids peak-charging the ripple-reduction capacitor. 0.183V Ripple Reduction Circuit.  2018 Microchip Technology Inc. DS20006049A-page 9 CL88030/31 The CL88030/31 with the ripple reduction circuit operates in four phases: recharge, hold-up, direct and under certain conditions, idle. Note that all active current paths include Segment 1, assuring uninterrupted light output during all phases of operation, excluding the idle phase. When the rectified AC falls below VCRPL, the capacitor takes over, supplying the LEDs. The discharge path flows through RSET1 only. Since this is lesser sense resistance than for the other current paths, the current for the hold-up phase will be higher. This allows for normal currents to be drawn from the AC line to better track the input voltage sine wave while allowing a higher current during the hold-up interval. Complicating the voltage requirements are lightning induced transients on the AC line. Depending on where the lamp is used, transient survivability requirements can range from 500V for protected indoor locations up to 10 kV for unprotected outdoor locations. Since high-brightness lamps will be mainly used outdoors, transient survivability requirements will be on the high end of the range. Transient protection can absorb the transients, but there is a rather large gap between the normal peak line voltage and the clamping voltage provided by the protection circuits, which can be hundreds of volts. The low-voltage controller will be powered by a shunt regulator. This avoids any high voltage on the controller, enabling it to be a strictly low voltage (~11V) chip. Due to the LED voltage drops, each tap has, theoretically, a different voltage requirement. And FET 1 sees higher current than FET 4. However, in practice one common FET is used to handle all taps. And from a BOM perspective, using a common FET can keep costs lower. For these be a strictly low voltage (~11V) chip. Due to the LED voltage drops, each tap has, theoretically, a different voltage requirement. And FET 1 sees higher current than FET 4. However, in practice one common FET is used to handle all taps. And from a BOM perspective, using a common FET can keep costs lower. For these reasons, a common FET is mentioned for every tap. Light output is estimated at 100 lm/watt. Direct (purple paths) 3.2.5 When VCRPL< VRAC < (VCRPL + VSEG1), the LEDs are supplied directly from the AC line. The window when the direct phase is active is determined by VSEG1. To prevent the OTP pin from going too high in voltage at cold temperatures, a 5.1 volt zener clamp to GND may be needed. Idle (no path) Because FET gate capacitance can vary considerably, it may be necessary to add a small GTx to GND capacitor for stability. Recharge (red path) Recharging of the ripple capacitor (CRPL) occurs when (VRAC – VSEG1) > VCRPL. The maximum voltage that CRPL can be charged to is: VCRP(max) = VSEG2 + VSEG3 + VSEG4 The numbers of LEDs for each segment must be chosen carefully so as not to exceed CRPL’s voltage rating while at the same time allowing CRPL to charge up to a voltage sufficient to drive at least SEG1. To provide continuous light output, the recharge path must include LEDs. Hold-Up (green path) At low AC line voltages, there is not enough voltage to charge CRPL sufficiently to power SEG1 and strobing will occur. Also, strobing will occur if CRPL is too small. 3.2.4 APPLICATION NOTES FET SELECTION The advantage of external FETs is three-fold. First, external FETs allow the LED driver to be scaled in both power and voltage. This allows us to produce one chip that can meet the needs of many different markets. Secondly, the heat can be spread over multiple devices, allowing for cooler overall operation. Thirdly, without the high real estate used by integrated FETs, nor the high voltage requirements, the die can be made very small. The scalability plus small die results in a low cost chip that can address a multitude of high-brightness markets. Common AC line voltages used in lighting are 90VAC, 120VAC, 208VAC, 230VAC, 277VAC, 347VAC, and 480VAC. A sequential linear driver can only be designed to handle one of these voltages – no multi-range, universal inputs can be realized. DS20006049A-page 10  2018 Microchip Technology Inc. CL88030/31 4.0 PACKAGING INFORMATION 4.1 Package Marking Information 10-Lead DFN (3x3x0.9 mm) Example XXXX YYWW NNN 3011 1824 256 PIN 1 PIN 1 Part Number Legend: XX...X Y YY WW NNN e3 * Note: Code CL88030T-E/MF 3011 CL88031T-E/MF 3111 Product Code or Customer-specific information Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code Pb-free JEDEC® designator for Matte Tin (Sn) This package is Pb-free. The Pb-free JEDEC designator ( e3 ) can be found on the outer packaging for this package. In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for product code or customer-specific information. Package may or may not include the corporate logo.  2018 Microchip Technology Inc. DS20006049A-page 11 CL88030/31 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS20006049A-page 12  2018 Microchip Technology Inc. CL88030/31 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging  2018 Microchip Technology Inc. DS20006049A-page 13 CL88030/31 Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS20006049A-page 14  2018 Microchip Technology Inc. CL88030/31 APPENDIX A: REVISION HISTORY Revision A (July 2018) • Original Release of this Document.  2018 Microchip Technology Inc. DS20006049A-page 15 CL88030/31 NOTES: DS20006049A-page 16  2018 Microchip Technology Inc. CL88030/31 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. Device Device: X (1) - X - Tape and Temperature Range Reel XX Package CL88030= Sequential Linear LED Driver with 4 Taps Examples: a) CL88030T-E/MF: Sequential Linear LED Driver with 4 Taps; Tape and Reel; 10LD DFN package b) CL88031T-E/MF: Sequential Linear LED Driver with 6 Taps; Tape and Reel; 10LD DFN package CL88031= Sequential Linear LED Driver with 6 Taps Tape and Reel Option T = Tape and Reel Temperature Range E = -40C to +125C (Extended) Package: MF = Plastic Dual Flat, No Lead Package (DFN), 8-lead Note 1:  2018 Microchip Technology Inc. Tape and Reel identifier only appears in the catalog part number description. This identifier is used for ordering purposes and is not printed on the device package. Check with your Microchip Sales Office for package availability with the Tape and Reel option. DS20006049A-page 17 CL88030/31 NOTES: page 18  2018 Microchip Technology Inc. Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. • There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. • Microchip is willing to work with the customer who is concerned about the integrity of their code. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.” Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights unless otherwise stated. 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Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, BodyCom, CodeGuard, CryptoAuthentication, CryptoAutomotive, CryptoCompanion, CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial Programming, ICSP, INICnet, Inter-Chip Connectivity, JitterBlocker, KleerNet, KleerNet logo, memBrain, Mindi, MiWi, motorBench, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE, Ripple Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI, SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries. GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. © 2018, Microchip Technology Incorporated, All Rights Reserved. ISBN: 978-1-5224-3354-5 == ISO/TS 16949 ==  2018 Microchip Technology Inc. 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