PATL431LIAIDBZR

ATL431LI TI1 | Alldatasheet

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ADVANCE□INFORMATION Vref Input VKA IKA Product Folder Order Now T echnical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. ADVANCE INFORMATION for pre-production products; subject to change without notice. ATL431LI ATL432LI SLVSDU6 – JULY 2017 ATL43xLIxHighBandwidthLow-IqProgrammableShuntRegulator

1 Features

1• Reference Voltage Tolerance at 25°C – 0.5% (B Grade) – 1% (A Grade)

• Minimum Typical Output Voltage: 2.5 V
• Adjustable Output Voltage: Vref to 36 V
• Operation From −40°C to +125°C
• Maximum Temperature Drift (ATL431LIB) – 34 mV
• Low Output Noise
• 0.3-Ω Typical Output Impedance
• Sink-Current Capability – Imin = 0.1 mA (max) – IKA = 15 mA (max)
• Reference Input Current IREF: 0.8 μA (max)
• Deviation of Reference Input Current over Temperature, II(dev): 0.4 μA (max)

2 Applications

• Adjustable Voltage and Current Referencing
• Secondary Side Regulation in Flyback SMPS
• Zener Diode Replacement
• Voltage Monitoring
• Precision Constant Current Sink/Source
• Comparator with Integrated Reference

3 Description

The ATL431LI device is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors. These devices have a typical output impedance of 0.3 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. This device is a pin-to-pin alternative to the TL431LI and TL432LI, with lower minimum operating current to help reduce system power consumption. The ATL432LI device has exactly the same functionality and electrical specifications as the ATL431LI device, but has a different pinout for the DBZ package. The ATL431LI device is offered in two grades, with initial tolerances (at 25°C) of 0.5%, and 1%, for the B and A grade, respectively. In addition, low output drift versus temperature ensures good stability over the entire temperature range. The ATL43xLIxQ devices are characterized for operation from –40°C to +125°C. Device Information(1) PART NUMBER PACKAGE (PIN) BODY SIZE (NOM) ATL43xLIx SOT-23 (3) 2.90 mm x 1.30 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Schematic

ADVANCE□INFORMATION ATL431LI ATL432LI SLVSDU6 – JULY 2017 www.ti.com Product Folder Links: ATL431LI ATL432LI Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated Table of Contents

6.5 Electrical Characteristics, ATL431LIAx,

6.6 Electrical Characteristics, ATL431LIBx,

12.3 Receiving Notification of Documentation Updates 25

13 Mechanical, Packaging, and Orderable

4 Revision History

July 2018 * Initial release.

ADVANCE□INFORMATION REF CA THODE ANODE CA THODE REF ANODE ATL431LI ATL432LI www.ti.com SLVSDU6 – JULY 2017 Product Folder Links: ATL431LI ATL432LI Submit Documentation FeedbackCopyright © 2017, Texas Instruments Incorporated

5 Pin Configuration and Functions

TYPE DESCRIPTIONATL431LIx ATL432LIx DBZ DBZ ANODE 3 3 O Common pin, normally connected to ground CATHODE 1 2 I/O Shunt Current/Voltage input REF 2 1 I Threshold relative to common anode

ADVANCE□INFORMATION ATL431LI ATL432LI SLVSDU6 – JULY 2017 www.ti.com Product Folder Links: ATL431LI ATL432LI Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) 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 under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. (2) All voltage values are with respect to ANODE, unless otherwise noted.

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1) MIN MAX UNIT VKA Cathode voltage(2) 37 V IKA Continuous cathode current range –10 18 mA II(ref) Reference input current range –5 10 mA TJ Operating virtual junction temperature 150 °C Tstg Storage temperature range –65 150 °C (1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. Manufacturing with less than 500-V HBM is possible with the necessary precautions. (2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Manufacturing with less than 250-V CDM is possible with the necessary precautions.

6.2 ESD Ratings

V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2000 VCharged-device model (CDM), per JEDEC specification JESD22- C101(2) ±1000 (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report.

6.3 Thermal Information

THERMAL METRIC(1) ATL43xLI UNIT DBZ RθJA Junction-to-ambient thermal resistance 371.7 °C/W RθJC(top) Junction-to-case (top) thermal resistance 145.9 (1) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability.

6.4 Recommended Operating Conditions

See(1) MIN MAX UNIT VKA Cathode voltage Vref 36 V IKA Cathode current 0.1 15 mA TA Operating free-air temperature ATL43xLIxI –40 85 ATL43xLIxQ –40 125

ADVANCE□INFORMATION R1|z |KA (1 + ( ∆V|z'| = ∆IKA ∆VKA |z | =KA ATL431LI ATL432LI www.ti.com SLVSDU6 – JULY 2017 Product Folder Links: ATL431LI ATL432LI Submit Documentation FeedbackCopyright © 2017, Texas Instruments Incorporated (1) The deviation parameters VI(dev) and II(dev) are defined as the differences between the maximum and minimum values obtained over the rated temperature range. The average full-range temperature coefficient of the reference input voltage αVref is defined as: αVref is positive or negative, depending on whether minimum Vref or maximum Vref, respectively, occurs at the lower temperature. (2) The dynamic impedance is defined as: When the device is operating with two external resistors (see Figure 16), the total dynamic impedance of the circuit is given by: which is approximately equal to .

6.5 Electrical Characteristics, ATL431LIAx, ATL432LIAx

over recommended operating conditions, TA = 25°C (unless otherwise noted) PARAMETER TEST CIRCUIT TEST CONDITIONS ATL431LIAx, ATL432LIAx UNIT MIN TYP MAX Vref Reference voltage See Figure 15 VKA = Vref, IKA = 1 mA 2475 2500 2525 mV VI(dev) Deviation of reference input voltage over full temperature range(1) See Figure 15 VKA = Vref, IKA = 1 mA, ATL43xLIAI devices 4 34 mVATL43xLIAQ devices 6 34 ΔVref / ΔVKA Ratio of change in reference voltage to the change in cathode voltage See Figure 16 IKA = 1 mA ΔVKA = 10 V – Vref –1.4 –2.7 mV/V ΔVKA = 36 V – 10 V –1 –2 Iref Reference input current See Figure 16 IKA = 1 mA, R1 = 10 kΩ, R2 = ∞ 0.4 0.8 µA II(dev) Deviation of reference input current over full temperature range(1) See Figure 16 IKA = 1 mA, R1 = 10 kΩ, R2 = ∞ 0.2 0.4 µA Imin Minimum cathode current for regulation See Figure 15 VKA = Vref 80 100 µA Ioff Off-state cathode current See Figure 17 VKA = 36 V, Vref = 0 0.1 1 µA |zKA| Dynamic impedance(2) See Figure 15 VKA = Vref, IKA = 1 mA to 15 mA 0.3 0.75 Ω

ADVANCE□INFORMATION ATL431LI ATL432LI SLVSDU6 – JULY 2017 www.ti.com Product Folder Links: ATL431LI ATL432LI Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) View footnote (1) in section 6.5. (2) View footnote (2) in section 6.5.

6.6 Electrical Characteristics, ATL431LIBx, ATL432LIBx

over recommended operating conditions, TA = 25°C (unless otherwise noted) PARAMETER TEST CIRCUIT TEST CONDITIONS ATL431LIBx, ATL432LIBx UNIT MIN TYP MAX Vref Reference voltage See Figure 15 VKA = Vref, IKA = 1 mA 2487 2500 2512 mV VI(dev) Deviation of reference input voltage over full temperature range(1) See Figure 15 VKA = Vref, IKA = 1 mA, ATL43xLIBI devices 4 34 mVATL43xLIBQ devices 6 34 ΔVref / ΔVKA Ratio of change in reference voltage to the change in cathode voltage See Figure 16 IKA = 1 mA ΔVKA = 10 V – Vref –1.4 –2.7 mV/V ΔVKA = 36 V – 10 V –1 –2 Iref Reference input current See Figure 16 IKA = 1 mA, R1 = 10 kΩ, R2 = ∞ 0.4 0.8 µA II(dev) Deviation of reference input current over full temperature range(1) See Figure 16 IKA = 1 mA, R1 = 10 kΩ, R2 = ∞ 0.2 0.4 µA Imin Minimum cathode current for regulation See Figure 15 VKA = Vref 80 100 µA Ioff Off-state cathode current See Figure 17 VKA = 36 V, Vref = 0 0.1 1 µA |zKA| Dynamic impedance(2) See Figure 15 VKA = Vref, IKA = 1 mA to 15 mA 0.3 0.75 Ω

6.7 Typical Characteristics

ranges of the various devices. Figure 1. Reference Voltage vs Free-Air Temperature Figure 2. Reference Current vs Free-Air Temperature Figure 3. Cathode Current vs Cathode Voltage Figure 4. Cathode Current vs Cathode Voltage Figure 5. Off-State Cathode Current Figure 6. Ratio of Delta Reference Voltage to Delta Cathode

CL then are adjusted to determine the ranges of stability. Figure 13. Stability Boundary Conditions for All ATL431B,

7 Parameter Measurement Information

Figure 15. Test Circuit for VKA = Vref Figure 16. Test Circuit for VKA > Vref Figure 17. Test Circuit for Ioff

8 Detailed Description

8.1 Overview

a single voltage reference, error amplifier, voltage clamp or comparator with integrated reference. ATL432LI are both functionally, but have separate pinout options. The ATL43xLIxQ devices are characterized for operation from –40°C to +125°C.

8.2 Functional Block Diagram

Figure 18. Equivalent Schematic

ADVANCE□INFORMATION ATL431LI ATL432LI SLVSDU6 – JULY 2017 www.ti.com Product Folder Links: ATL431LI ATL432LI Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated

8.3 Feature Description

ATL431LI consists of an internal reference and amplifier that outputs a sink current based on the difference between the reference pin and the virtual internal pin. The sink current is produced by the internal Darlington pair, shown in the above schematic (Figure 18). A Darlington pair is used in order for this device to be able to sink a maximum current of 15 mA. When operated with enough voltage headroom (≥ 2.5 V) and cathode current (IKA), ATL431LI forces the reference pin to 2.5 V. However, the reference pin can not be left floating, as it needs IREF ≥ 0.8 µA ( see Specifications). This is because the reference pin is driven into an npn, which needs base current in order operate properly. When feedback is applied from the Cathode and Reference pins, ATL431LI behaves as a Zener diode, regulating to a constant voltage dependent on current being supplied into the cathode. This is due to the internal amplifier and reference entering the proper operating regions. The same amount of current needed in the above feedback situation must be applied to this device in open loop, servo or error amplifying implementations in order for it to be in the proper linear region giving ATL431LI enough gain. Unlike many linear regulators, ATL431LI is internally compensated to be stable without an output capacitor between the cathode and anode. However, if it is desired to use an output capacitor Specifications can be used as a guide to assist in choosing the correct capacitor to maintain stability.

8.4 Device Functional Modes

8.4.1 Open Loop (Comparator)

When the cathode/output voltage or current of ATL431LI is not being fed back to the reference/input pin in any form, this device is operating in open loop. With proper cathode current (Ika) applied to this device, ATL431LI will have the characteristics shown in Figure 18. With such high gain in this configuration, ATL431LI is typically used as a comparator. With the reference integrated makes ATL431LI the preferred choice when users are trying to monitor a certain level of a single signal.

8.4.2 Closed Loop

When the cathode/output voltage or current of ATL431LI is being fed back to the reference/input pin in any form, this device is operating in closed loop. The majority of applications involving ATL431LI use it in this manner to regulate a fixed voltage or current. The feedback enables this device to behave as an error amplifier, computing a portion of the output voltage and adjusting it to maintain the desired regulation. This is done by relating the output voltage back to the reference pin in a manner to make it equal to the internal reference voltage, which can be accomplished via resistive or direct feedback.

ADVANCE□INFORMATION ATL431LI ATL432LI www.ti.com SLVSDU6 – JULY 2017 Product Folder Links: ATL431LI ATL432LI Submit Documentation FeedbackCopyright © 2017, Texas Instruments Incorporated

9 Applications and Implementation

Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.

9.1 Application Information

As this device has many applications and setups, there are many situations that this datasheet can not characterize in detail. The linked application notes will help the designer make the best choices when using this part. provides a deeper understanding of this device's stability characteristics and aid the user in making the right choices when choosing a load capacitor. Application note Setting the Shunt Voltage on an Adjustable Shunt Regulator, SLVA445 assists with setting the shunt voltage to achieve optimum accuracy for this device.

9.2 Typical Applications

9.2.1 Comparator With Integrated Reference

Figure 19. Comparator Application Schematic

9.2.1.1 Design Requirements

For this design example, use the parameters listed in Table 1 as the input parameters. Table 1. Design Parameters

9.2.1.2 Detailed Design Procedure

• Input Voltage Range
• Reference Voltage Accuracy
• Output logic input high and low level thresholds
• Current Source resistance

9.2.1.2.1 Basic Operation

being 1 mA, operation below that could result in low gain, leading to a slow response. Slow or inaccurate responses can also occur when the reference pin is not provided enough overdrive voltage. overdrive voltage provided, the faster the ATL431LI will respond. internal VREF should suffice.

9.2.1.2.2 Output Voltage and Logic Input Level

to the receiving low voltage logic device. outgoing logic's reliability. that will mitigate the error that IREF creates from VIN. Figure 20. Output Response With Various Cathode Currents

9.2.2 Precision Constant Current Sink

Figure 21. Precision Constant Current Sink Application Schematic

9.2.2.1 Design Requirements

For this design example, use the parameters listed in Table 1 as the input parameters. Table 2. Design Parameters

9.2.2.2 Detailed Design Procedure

• Output Current Range
• Output Current Accuracy
• Power Consumption for ATL43xLI

9.2.2.2.1 Basic Operation

with accuracy set by itself and the sense resistor RS. This circuit can also be used as LED driving circuit. voltage reference devices such as TLV43x or TLVH43x. specification of these parameters.

9.2.2.2.2 Power Consumption

needs to be reached. This is accomplished by setting the external biasing resistor in series with the ATL43xLI.

9.2.3 Shunt Regulator/Reference

Figure 22. Shunt Regulator Schematic

9.2.3.1 Design Requirements

For this design example, use the parameters listed in Table 1 as the input parameters. Table 3. Design Parameters

9.2.3.2 Detailed Design Procedure

• Input Voltage Range
• Temperature Range
• Total Accuracy
• Cathode Current
• Reference Initial Accuracy
• Output Capacitance

9.2.3.2.1 Programming Output/Cathode Voltage

mitigate any gain error. This can be done by meeting the Imin spec denoted in Specifications.

9.2.3.2.2 Total Accuracy

• R1 and R2 accuracies
• VI(dev) - Change in reference voltage over temperature
• ΔVREF / ΔVKA - Change in reference voltage to the change in cathode voltage
• |zKA| - Dynamic impedance, causing a change in cathode voltage with cathode current Worst case cathode voltage can be determined taking all of the variables in to account. Application note Setting the Shunt Voltage on an Adjustable Shunt Regulator, SLVA445 assists designers in setting the shunt voltage to achieve optimum accuracy for this device.

9.2.3.2.3 Stability

9.2.3.2.4 Start-up Time

Figure 23. ATL43xLIx Start-up Response

9.3 System Examples

A. R should provide cathode current ≥ 0.1 mA to the ATL431LI at minimum V(BATT). Figure 24. Precision High-Current Series Regulator Figure 25. Output Control of a Three-Terminal Fixed Regulator Figure 26. High-Current Shunt Regulator

12 VDelay = R × C × I 12 V – V

Figure 30. PWM Converter With Reference Figure 31. Voltage Monitor Figure 32. Delay Timer

Figure 33. Precision Current Limiter Figure 34. Precision Constant-Current Sink

10 Power Supply Recommendations

limit the current being driven into the Ref pin, as not to exceed its absolute maximum rating. of the traces to have the proper current density.

11 Layout

11.1 Layout Guidelines

appropriate for the amount of current they are carrying; in the case of the ATL43xLIx, these currents will be low.

11.2 Layout Example

Figure 35. DBZ Layout example

12 Device and Documentation Support

12.1 Related Links

resources, tools and software, and quick access to order now. Table 4. Related Links

12.2 Documentation Support

12.2.1 Related Documentation

• Understanding Stability Boundary Conditions Charts in TL431, TL432 Data Sheet, SLVA482
• Setting the Shunt Voltage on an Adjustable Shunt Regulator, SLVA445

12.3 Receiving Notification of Documentation Updates

changed. For change details, review the revision history included in any revised document.

12.4 Community Resources

solve problems with fellow engineers. contact information for technical support.

12.5 Trademarks

E2E is a trademark of Texas Instruments.

12.6 Electrostatic Discharge Caution

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

12.7 Glossary

This glossary lists and explains terms, acronyms, and definitions.

13 Mechanical, Packaging, and Orderable Information

this document. For browser-based versions of this data sheet, refer to the left-hand navigation.

www.ti.com 24-Aug-2018 Addendum-Page 1 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/Ball Finish (6) MSL Peak Temp (3) Op Temp (°C) Device Marking (4/5) Samples PATL431LIAIDBZR ACTIVE SOT-23 DBZ 3 3000 TBD Call TI Call TI -40 to 85 PATL431LIAQDBZR ACTIVE SOT-23 DBZ 3 3000 TBD Call TI Call TI -40 to 125 PATL431LIBIDBZR ACTIVE SOT-23 DBZ 3 3000 TBD Call TI Call TI -40 to 85 PATL431LIBQDBZR ACTIVE SOT-23 DBZ 3 3000 TBD Call TI Call TI -40 to 125 PATL432LIAIDBZR ACTIVE SOT-23 DBZ 3 3000 TBD Call TI Call TI -40 to 85 PATL432LIAQDBZR ACTIVE SOT-23 DBZ 3 3000 TBD Call TI Call TI -40 to 125 PATL432LIBIDBZR ACTIVE SOT-23 DBZ 3 3000 TBD Call TI Call TI -40 to 85 PATL432LIBQDBZR ACTIVE SOT-23 DBZ 3 3000 TBD Call TI Call TI -40 to 125 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device.

www.ti.com 24-Aug-2018 Addendum-Page 2 (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

www.ti.com PACKAGE OUTLINE C TYP0.20 0.08 0.25 2.64 2.10

1.12 MAX

TYP0.10 0.01 3X 0.5 0.3 TYP0.6 0.2 1.9 0.95 TYP -80 A 3.04 2.80 B1.4 1.2 (0.95) SOT-23 - 1.12 mm max heightDBZ0003A SMALL OUTLINE TRANSISTOR 4214838/C 04/2017 NOTES: 1. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. Reference JEDEC registration TO-236, except minimum foot length.

0.2 C A B

0.1 C SCALE 4.000

www.ti.com EXAMPLE BOARD LAYOUT

0.07 MAX

0.07 MIN

3X (1.3) 3X (0.6) (2.1) 2X (0.95) (R0.05) TYP 4214838/C 04/2017 SOT-23 - 1.12 mm max heightDBZ0003A SMALL OUTLINE TRANSISTOR NOTES: (continued) 4. Publication IPC-7351 may have alternate designs. 5. Solder mask tolerances between and around signal pads can vary based on board fabrication site. SYMM LAND PATTERN EXAMPLE SCALE:15X PKG SOLDER MASK OPENING METAL UNDER SOLDER MASK SOLDER MASK DEFINED METALSOLDER MASK OPENING NON SOLDER MASK DEFINED (PREFERRED) SOLDER MASK DETAILS

www.ti.com EXAMPLE STENCIL DESIGN (2.1) 2X(0.95) 3X (1.3) 3X (0.6) (R0.05) TYP SOT-23 - 1.12 mm max heightDBZ0003A SMALL OUTLINE TRANSISTOR 4214838/C 04/2017 NOTES: (continued) 6. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 7. Board assembly site may have different recommendations for stencil design. SOLDER PASTE EXAMPLE BASED ON 0.125 THICK STENCIL SCALE:15X SYMM PKG

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