LT4-.2, LT4-2.5 Initial Accuracy ±4 mv for LT4-.2 ±2 mv for LT4-2.5 Micropower Operation Operates up to 2 ma Very Low Reference Impedance Applications: Portable Meter Reference Portable Test Instruments Battery-Operated Systems Current-Loop Instrumentation NC NC NC ANODE SLVS22M JANUARY 989 REVISED MAY 28 D OR PW PACKAGE (TOP VIEW) LP PACKAGE (TOP VIEW) description/ordering information ANODE The LT4 micropower voltage reference is a CATHODE two-terminal band-gap reference diode designed NC to provide high accuracy and excellent temperature characteristics at very low operating NC No internal connection currents. Optimizing the key parameters in the design, processing, and testing of the device results in specifications previously attainable only with selected units. The LT4 is a pin-for-pin replacement for the LM285 and LM385 series of references, with improved specifications. It is an excellent device for use in systems in which accuracy previously was attained at the expense of power consumption and trimming. The LT4C is characterized for operation from C to 7 C. The LT4I is characterized for operation from 4 C to 85 C. 2 3 4 8 7 6 5 CATHODE NC CATHODE NC NC No internal connection Terminals 6 and 8 are internally connected. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright 28, Texas Instruments Incorporated POST OFFICE BOX 65533 DALLAS, TEXAS 75265
LT4-.2, LT4-2.5 SLVS22M JANUARY 989 REVISED MAY 28 description/ordering information (continued) symbol T A C to7 C 4 C to85 C V Z TYP 2V.2 25V 2.5 2V.2 25V 2.5 SOIC (D) TSSOP (PW) SOIC (D) TSSOP (PW) SOIC (D) TSSOP (PW) SOIC (D) TSSOP (PW) ORDERING INFORMATION PACKAGE Tube of 75 Reel of 25 Tube of 5 Reel of 2 Tube of 75 Reel of 25 Tube of 5 Reel of 2 Tube of 75 Reel of 25 Tube of 5 Reel of 2 Tube of 75 Reel of 25 Tube of 5 Reel of 2 ORDERABLE PART NUMBER LT4CD--2 LT4CDR--2 LT4CPW--2 LT4CPWR--2 LT4CD-2-5 LT4CDR-2-5 LT4CPW-2-5 LT4CPWR-2-5 LT4ID--2 LT4IDR--2 LT4IPW--2 LT4IPWR--2 LT4ID-2-5 LT4IDR-2-5 LT4IPW-2-5 LT4IPWR-2-5 4C-2 4C-2 4C-25 4C-25 4I-2 4I-2 4I-25 4I-25 TOP-SIDE MARKING For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at http://www.ti.com. Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging. ANODE (A) CATHODE (K) 2 POST OFFICE BOX 65533 DALLAS, TEXAS 75265
LT4-.2, LT4-2.5 SLVS22M JANUARY 989 REVISED MAY 28 schematic LT4-.2 CATHODE 7.5 kω Q2 Q3 Q 2 kω Q4 Q2 Q Q 2 pf 2 pf 5 kω 6 kω Q9 5 kω Q5 Q8 3 kω 5 Ω Q6 Q7 Q3 6 kω ANODE LT4-2.5 CATHODE 7.5 kω Q2 Q3 Q 2 kω Q4 Q2 Q 5 kω Q 2 pf 2 pf 5 kω 6 kω Q9 5 kω Q5 Q8 3 kω 5 Ω Q6 Q7 Q3 6 kω 5 kω ANODE NOTE A: All component values shown are nominal. POST OFFICE BOX 65533 DALLAS, TEXAS 75265 3
LT4-.2, LT4-2.5 SLVS22M JANUARY 989 REVISED MAY 28 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Reverse current, I R....................................................................... 3 ma Forward current, I F....................................................................... ma Package thermal impedance, θ JA (see Notes and 2): D package............................ 97 C/W PW package......................... 49 C/W Operating virtual junction temperature, T J................................................... 5 C Lead temperature,6 mm (/6 inch) from case for seconds............................... 26 C Storage temperature range, T stg................................................... 65 C to 5 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 under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES:. Maximum power dissipation is a function of T J (max), θ JA, and T A. The maximum allowable power dissipation at any allowable ambient temperature is P D = (T J (max) T A )/θ JA. Operating at the absolute maximum T J of 5 C can affect reliability. 2. The package thermal impedance is calculated in accordance with JESD 5-7. recommended operating conditions T A Operating free-air temperature MIN MAX UNIT LT4C 7 C LT4I 4 85 electrical characteristics at specified free-air temperature PARAMETER TEST CONDITIONS LT4-.2 LT4-2.5 T A MIN TYP MAX MIN TYP MAX 25 C.23.235.239 2.48 2.5 2.52 V Z Reference voltage I Z = µa Full LT4C.225.245 2.47 2.53 V range LT4I.225.245 2.47 2.53 VZ V Z V Z / t I Z (min) Average I Z = µa temperature coefficient of reference voltage I Z = 2 µa Change in reference voltage with current Long-term change in reference voltage Minimum reference current I Z = I Z (min) to ma I Z = mato2ma z z Reference impedance I Z = µaa V n Broadband noise voltage 25 C 2 25 C Full range.5.5 25 C Full range 2 2 2 UNIT ppm/ C I Z = µa 25 C 2 2 ppm/khr I Z = µa, f = Hz to khz mv Full range 8 2 2 µa 25 C.2.6.2.6 Full range.5.5 25 C 6 2 µv Full range is C to 7 C for the LT4C and 4 C to 85 C for the LT4I. The average temperature coefficient of reference voltage is defined as the total change in reference voltage divided by the specified temperature range. Ω 4 POST OFFICE BOX 65533 DALLAS, TEXAS 75265
LT4-.2, LT4-2.5 TYPICAL CHARACTERISTICS SLVS22M JANUARY 989 REVISED MAY 28 Table of Graphs GRAPH TITLE FIGURE LT4x-.2 Reverse current Reverse voltage Reference-voltage change Reverse current 2 Forward voltage Forward current 3 Reference voltage Free-air temperature 4 Reference impedance Reference current 5 Noise voltage Frequency 6 Filtered output noise voltage Cutoff frequency 7 LT4x-2.5 Transient response 8 Reverse current Reverse voltage 9 Forward voltage Forward current Reference voltage Free-air temperature Reference impedance Reference current 2 Noise voltage Frequency 3 Filtered output noise voltage Cutoff frequency 4 Transient response 5 POST OFFICE BOX 65533 DALLAS, TEXAS 75265 5
LT4-.2, LT4-2.5 SLVS22M JANUARY 989 REVISED MAY 28 TYPICAL CHARACTERISTICS LT4x-.2 REVERSE CURRENT REVERSE VOLTAGE ÎÎÎÎÎÎÎ T A = 55 C to 25 C 6 LT4x-.2 REFERENCE-VOLTAGE CHANGE REVERSE CURRENT ÎÎÎÎÎÎ T A = 55 C to 25 C I R Reverse Current µ A Reference Voltage Change mv V Z 2 8 4..2.4.6.8.2.4 4.. V R Reverse Voltage V I R Reverse Current ma Figure Figure 2.2 T A = 25 C LT4x-.2 FORWARD VOLTAGE FORWARD CURRENT.245 ÎÎÎÎÎ I Z = µa LT4x-.2 REFERENCE VOLTAGE FREE-AIR TEMPERATURE Forward Voltage V V F.8.6.4 Reference Voltage V V Z.24.235.23.2.225.. I F Forward Current ma 55 35 5 5 25 45 65 85 T A Free-Air Temperature C 5 25 Figure 3 Figure 4 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. 6 POST OFFICE BOX 65533 DALLAS, TEXAS 75265
LT4-.2, LT4-2.5 TYPICAL CHARACTERISTICS SLVS22M JANUARY 989 REVISED MAY 28 LT4x-.2 REFERENCE IMPEDANCE REFERENCE CURRENT ÎÎÎÎÎÎÎ f = 25 Hz T A = 55 C to 25 C 7 6 ÎÎÎÎ I Z = µa T A = 25 C LT4x-.2 NOISE VOLTAGE FREQUENCY Ω Reference Impedance z z V n Noise Voltage nv/ Hz 5 4 3 2... k k k I Z Reference Current ma f Frequency Hz Figure 5 Figure 6 7 TL4x-.2 FILTERED OUTPUT NOISE VOLTAGE CUTOFF FREQUENCY LT4x-.2 TRANSIENT RESPONSE µv Filtered Output Noise Voltage 6 5 4 3 2 I Z = µa ÎÎÎÎÎ T A = 25 C µa R C ÎÎÎÎÎ RC Low Pass Input and Output Voltages V 2.5.5 5 V I Output 36 kω Input V O. 5 6 Cutoff Frequency khz t Time µs Figure 7 Figure 8 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. POST OFFICE BOX 65533 DALLAS, TEXAS 75265 7
LT4-.2, LT4-2.5 SLVS22M JANUARY 989 REVISED MAY 28 TYPICAL CHARACTERISTICS T A = 55 C to 25 C LT4x-2.5 REVERSE CURRENT REVERSE VOLTAGE.2 ÎÎÎÎ T A = 25 C LT4x-2.5 FORWARD VOLTAGE FORWARD CURRENT I R Reverse Current µ A Forward Voltage V V F.8.6.4.2..5.5 2 V R Reverse Voltage V 2.5 3.. I F Forward Current ma Figure 9 Figure 2.52 2.55 ÎÎÎÎÎ I Z = µa LT4x-2.5 REFERENCE VOLTAGE FREE-AIR TEMPERATURE Reference Voltage V V Z 2.5 2.55 2.5 2.495 2.49 2.485 2.48 2.475 55 35 5 5 25 45 65 85 T A Free-Air Temperature C 5 25 Figure Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. 8 POST OFFICE BOX 65533 DALLAS, TEXAS 75265
LT4-.2, LT4-2.5 TYPICAL CHARACTERISTICS SLVS22M JANUARY 989 REVISED MAY 28 LT4x-2.5 REFERENCE IMPEDANCE REFERENCE CURRENT ÎÎÎÎÎÎ f = 25 Hz ÎÎÎÎÎÎ T A = 55 C to 25 C 4 2 ÎÎÎÎ I Z = µa T A = 25 C LT4x-2.5 NOISE VOLTAGE FREQUENCY Reference Impedance Ω z z V n Noise Voltage nv/ Hz 8 6 4 2... k k k I Z Reference Current ma f Frequency Hz Figure 2 Figure 3 Filtered Output Noise Voltage µv 2 8 6 4 2 TL4x-2.5 FILTERED OUTPUT NOISE VOLTAGE CUTOFF FREQUENCY I Z = µa ÎÎÎÎ T A = 25 C µa R C ÎÎÎÎÎ RC Low Pass Input and Output Voltages V 4 3 2 5 LT4x-2.5 TRANSIENT RESPONSE V I Output 24 kω Input V O. 5 Cutoff Frequency khz t Time µs Figure 4 Figure 5 Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. POST OFFICE BOX 65533 DALLAS, TEXAS 75265 9
LT4-.2, LT4-2.5 SLVS22M JANUARY 989 REVISED MAY 28 APPLICATION INFORMATION pf 22 kω LT4-.2 24 V 2 kω 24 V + LM3A 5 V Output 6.9 kω 6 µs RC 2 V.5 µf.5 kω TTL Input kω 2N394 56 kω % metal-film resistors 5 V Figure 6. V I(PP) Generator for EPROMs (No Trim Required) Network Detail YSI 442 5 V RT Network YSI 442 Green 625 Ω Brown 2.7 kω 5% LT4-.2 kω.% /2 TLE222 + 2765 Ω.% + /2 TLE222 32 kω V C C Red kω.% 68.3 Ω.% kω.% Figure 7. C-to- C Linear-Output Thermometer POST OFFICE BOX 65533 DALLAS, TEXAS 75265
LT4-.2, LT4-2.5 APPLICATION INFORMATION SLVS22M JANUARY 989 REVISED MAY 28 V+ LM334 R V I = 6.5 V to 5 V V 5.6 kω 3 2 7 + 8 TLC27 6 V O = 5 V LT4-.2 4 5 pf 3. MΩ % MΩ % Figure 8. Micropower 5-V Reference µa LT4-.2 V I 5 V 22 Ω + Output 5 µf 9 V 5 kω LT4-.2.235 V Figure 9. Low-Noise Reference Figure 2. Micropower Reference From 9-V Battery kω R 3 V Lithium LT4-.2 87 Ω 684 Ω 5 kω at 25 C 8 Ω + THERMOCOUPLE TYPE J K T S R 232 kω 298 kω 3 kω 2. MΩ + Quiescent current 5 µa Yellow Springs Inst. Co., Part #447 NOTE A: This application compensates within ± C from C to 6 C. Figure 2. Micropower Cold-Junction Compensation for Thermocouples POST OFFICE BOX 65533 DALLAS, TEXAS 75265
LT4-.2, LT4-2.5 SLVS22M JANUARY 989 REVISED MAY 28 APPLICATION INFORMATION 5 V 5 kω 2.5 V V I 8 V µf + IN LT84 OUT ADJ + LT4-2.5 µf 3 Ω % 5 V LT4-2.5 Ω % Figure 22. 2.5-V Reference Figure 23. High-Stability 5-V Regulator V CC+ 5 V 5 V 25 kω 25 kω 2 kω Output LT4-.2 Input R (see Note A) TLE227 + 2N394 I O (see Note A) 5 V May be increased for small output currents 2 V NOTE A: R I O + µa, I O =.235 V R Figure 24. Ground-Referenced Current Source 2 kω LT4-.2 6 kω V CC 5 V Figure 25. Amplifier With Constant Gain Over Temperature.5 V (see Note A) V+ LM334 R 3 kω.235 V LT4-.2 NOTE A: Output regulates down to.285 V for I O =. Figure 26..2-V Reference From.5-V Battery 6.8 kω LT4-.2 I O R 5 kω.3 V R Figure 27. Terminal Current Source With Low Temperature Coefficient 2 POST OFFICE BOX 65533 DALLAS, TEXAS 75265
LT4-.2, LT4-2.5 APPLICATION INFORMATION SLVS22M JANUARY 989 REVISED MAY 28 Battery Output R % MΩ 2 V + 33 kω % TLC27 LO = Battery Low LT4-.2 R sets trip point, 6.4 kω per cell for.8 V per cell. Figure 28. Lead-Acid Low-Battery-Voltage Detector LT84 V I V I V O V O + ADJ µf 2 Ω + µf LT4-.2 R V CC V.5 R 2 kω V CC Figure 29. Variable-Voltage Supply POST OFFICE BOX 65533 DALLAS, TEXAS 75265 3
PACKAGE OPTION ADDENDUM www.ti.com 8-Jun-27 PACKAGING INFORMATION Orderable Device Status () Package Type Package Drawing Pins Package Qty Eco Plan LT4CD--2 ACTIVE SOIC D 8 75 Green (RoHS LT4CD-2-5 ACTIVE SOIC D 8 75 Green (RoHS LT4CDG4--2 ACTIVE SOIC D 8 75 Green (RoHS LT4CDR--2 ACTIVE SOIC D 8 25 Green (RoHS LT4CDR-2-5 ACTIVE SOIC D 8 25 Green (RoHS LT4CDRG4-2-5 ACTIVE SOIC D 8 25 Green (RoHS LT4CPW--2 ACTIVE TSSOP PW 8 5 Green (RoHS LT4CPWR--2 ACTIVE TSSOP PW 8 2 Green (RoHS LT4CPWR-2-5 ACTIVE TSSOP PW 8 2 Green (RoHS LT4ID--2 ACTIVE SOIC D 8 75 Green (RoHS LT4ID-2-5 ACTIVE SOIC D 8 75 Green (RoHS LT4IDG4--2 ACTIVE SOIC D 8 75 Green (RoHS LT4IDG4-2-5 ACTIVE SOIC D 8 75 Green (RoHS LT4IDR--2 ACTIVE SOIC D 8 25 Green (RoHS LT4IDR-2-5 ACTIVE SOIC D 8 25 Green (RoHS LT4IDRE4-2-5 ACTIVE SOIC D 8 25 Green (RoHS LT4IDRG4--2 ACTIVE SOIC D 8 25 Green (RoHS (2) Lead/Ball Finish (6) MSL Peak Temp (3) Op Temp ( C) Device Marking (4/5) CU NIPDAU Level--26C-UNLIM 4C-2 CU NIPDAU Level--26C-UNLIM 4C-25 CU NIPDAU Level--26C-UNLIM to 7 4C-2 CU NIPDAU Level--26C-UNLIM 4C-2 CU NIPDAU Level--26C-UNLIM 4C-25 CU NIPDAU Level--26C-UNLIM to 7 4C-25 CU NIPDAU Level--26C-UNLIM -4 to 85 4C-2 CU NIPDAU Level--26C-UNLIM to 7 4C-2 CU NIPDAU Level--26C-UNLIM to 7 4C-25 CU NIPDAU Level--26C-UNLIM 4I-2 CU NIPDAU Level--26C-UNLIM 4I-25 CU NIPDAU Level--26C-UNLIM -4 to 85 4I-2 CU NIPDAU Level--26C-UNLIM -4 to 85 4I-25 CU NIPDAU Level--26C-UNLIM -4 to 85 4I-2 CU NIPDAU Level--26C-UNLIM 4I-25 CU NIPDAU Level--26C-UNLIM -4 to 85 4I-25 CU NIPDAU Level--26C-UNLIM -4 to 85 4I-2 Samples Addendum-Page
PACKAGE OPTION ADDENDUM www.ti.com 8-Jun-27 Orderable Device Status () Package Type Package Drawing Pins Package Qty Eco Plan LT4IPW--2 ACTIVE TSSOP PW 8 5 Green (RoHS LT4IPW-2-5 ACTIVE TSSOP PW 8 5 Green (RoHS LT4IPWR--2 ACTIVE TSSOP PW 8 2 Green (RoHS LT4IPWR-2-5 ACTIVE TSSOP PW 8 2 Green (RoHS (2) Lead/Ball Finish (6) MSL Peak Temp (3) Op Temp ( C) Device Marking (4/5) CU NIPDAU Level--26C-UNLIM -4 to 85 4I-2 CU NIPDAU Level--26C-UNLIM -4 to 85 4I-25 CU NIPDAU Level--26C-UNLIM -4 to 85 4I-2 CU NIPDAU Level--26C-UNLIM -4 to 85 4I-25 Samples () 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 RoHS substances, including the requirement that RoHS substance do not exceed.% 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 JS79B low halogen requirements of <=ppm threshold. Antimony trioxide based flame retardants must also meet the <=ppm 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. (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. Addendum-Page 2
PACKAGE OPTION ADDENDUM www.ti.com 8-Jun-27 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. Addendum-Page 3
PACKAGE MATERIALS INFORMATION www.ti.com 5-Feb-26 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W (mm) A (mm) B (mm) K (mm) P (mm) W (mm) Pin Quadrant LT4CDR--2 SOIC D 8 25 33. 2.4 6.4 5.2 2. 8. 2. Q LT4CDR--2 SOIC D 8 25 33. 2.4 6.4 5.2 2. 8. 2. Q LT4CDR-2-5 SOIC D 8 25 33. 2.4 6.4 5.2 2. 8. 2. Q LT4CPWR--2 TSSOP PW 8 2 33. 2.4 7. 3.6.6 8. 2. Q LT4CPWR-2-5 TSSOP PW 8 2 33. 2.4 7. 3.6.6 8. 2. Q LT4IDR--2 SOIC D 8 25 33. 2.4 6.4 5.2 2. 8. 2. Q LT4IDR-2-5 SOIC D 8 25 33. 2.4 6.4 5.2 2. 8. 2. Q LT4IPWR--2 TSSOP PW 8 2 33. 2.4 7. 3.6.6 8. 2. Q LT4IPWR-2-5 TSSOP PW 8 2 33. 2.4 7. 3.6.6 8. 2. Q Pack Materials-Page
PACKAGE MATERIALS INFORMATION www.ti.com 5-Feb-26 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LT4CDR--2 SOIC D 8 25 367. 367. 35. LT4CDR--2 SOIC D 8 25 34.5 338. 2.6 LT4CDR-2-5 SOIC D 8 25 34.5 338. 2.6 LT4CPWR--2 TSSOP PW 8 2 367. 367. 35. LT4CPWR-2-5 TSSOP PW 8 2 367. 367. 35. LT4IDR--2 SOIC D 8 25 34.5 338. 2.6 LT4IDR-2-5 SOIC D 8 25 34.5 338. 2.6 LT4IPWR--2 TSSOP PW 8 2 367. 367. 35. LT4IPWR-2-5 TSSOP PW 8 2 367. 367. 35. Pack Materials-Page 2
SCALE 2.8 PW8A PACKAGE OUTLINE TSSOP -.2 mm max height SMALL OUTLINE PACKAGE 6.6 TYP 6.2 SEATING PLANE C A PIN ID AREA. C 8 6X.65 3. 2.9 NOTE 3 2X.95 4 B 4.5 4.3 NOTE 4 5 8X.3.9. C A B.2 MAX SEE DETAIL A (.5) TYP.25 GAGE PLANE - 8.75.5 DETAIL A TYPICAL.5.5 422848/A 2/25 NOTES:. All linear dimensions are in millimeters. Any dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y4.5M. 2. This drawing is subject to change without notice. 3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed.5 mm per side. 4. This dimension does not include interlead flash. Interlead flash shall not exceed.25 mm per side. 5. Reference JEDEC registration MO-53, variation AA. www.ti.com
PW8A EXAMPLE BOARD LAYOUT TSSOP -.2 mm max height SMALL OUTLINE PACKAGE 8X (.45) 8X (.5) SYMM 8 (R.5) TYP SYMM 6X (.65) 4 5 (5.8) LAND PATTERN EXAMPLE SCALE:X SOLDER MASK OPENING METAL METAL UNDER SOLDER MASK SOLDER MASK OPENING.5 MAX ALL AROUND.5 MIN ALL AROUND NON SOLDER MASK DEFINED SOLDER MASK DEFINED SOLDER MASK DETAILS NOT TO SCALE 422848/A 2/25 NOTES: (continued) 6. Publication IPC-735 may have alternate designs. 7. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com
PW8A EXAMPLE STENCIL DESIGN TSSOP -.2 mm max height SMALL OUTLINE PACKAGE 8X (.45) 8X (.5) SYMM 8 (R.5) TYP SYMM 6X (.65) 4 5 (5.8) SOLDER PASTE EXAMPLE BASED ON.25 mm THICK STENCIL SCALE:X 422848/A 2/25 NOTES: (continued) 8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 9. Board assembly site may have different recommendations for stencil design. www.ti.com
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