LT1009 Series 2.5V Reference FEATURES DESCRIPTION n The LT(R)1009 is a precision trimmed 2.5V shunt regulator diode featuring a maximum initial tolerance of only 5mV. The low dynamic impedance and wide operating current range enhances its versatility. The 0.2% reference tolerance is achieved by on-chip trimming which not only minimizes the initial voltage tolerance but also minimizes the temperature drift. n n n n n n Maximum Initial Tolerance: 0.2% Guaranteed Temperature Stability Maximum 0.6 Dynamic Impedance Wide Operating Current Range Directly Interchangeable with LM136 for Improved Performance No Adjustments Needed for Minimum Temperature Coefficient Available in 8-Lead SO and MSOP Packages and 3-Lead TO-92 Package APPLICATIONS n n n n n Reference for 5V Systems 8-Bit A/D and D/A Reference Digital Voltmeters Current Loop Measurement and Control Systems Power Supply Monitor Even though no adjustments are needed with the LT1009, a third terminal allows the reference voltage to be adjusted 5% to calibrate out system errors. In many applications, the LT1009 can be used as a pin-to-pin replacement of the LM136 and the external trim network eliminated. For a lower drift 2.5V reference, see the LT1019 data sheet. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 2.5V Reference Output Voltage 5V TO 35V 2.53 3.6k LT1009 10k* TRIM *DOES NOT AFFECT TEMPERATURE COEFFICIENT. 5% TRIM RANGE 1009 TA01 REFERENCE VOLTAGE (V) 2.52 OUTPUT 2.51 GUARANTEED MAXIMUM TYPICAL 2.50 2.49 GUARANTEED MINIMUM 2.48 2.47 -50 -25 50 25 75 0 TEMPERATURE (C) 100 125 1009 TA02 1009ff 1 LT1009 Series ABSOLUTE MAXIMUM RATINGS (Note 1) Reverse Current .....................................................20mA Forward Current .....................................................10mA Storage Temperature Range...................-65C to 150C Lead Temperature (Soldering, 10 sec) .................. 300C Operating Temperature Range LT1009/LT1009C ...................................... 0C to 70C LT1009I .............................................. -40C to 85C LT1009M (OBSOLETE) ..................... -55C to 125C PIN CONFIGURATION BOTTOM VIEW ADJ + TOP VIEW - NC NC NC (-) H PACKAGE 3-LEAD TO-46 METAL CAN 8 7 6 5 1 2 3 4 (+) NC (+) ADJ MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 150C, JA = 440C/W, JC = 80C/W TJMAX = 150C, JA = 250C/W OBSOLETE PACKAGE Consider the MS8, S8 or Z Packages for Alternate Source TOP VIEW BOTTOM VIEW NC 1 8 (+) NC 2 7 NC NC 3 6 (+) (-) 4 5 ADJ ADJ + - Z PACKAGE 3-LEAD PLASTIC TO-92 S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 100C, JA = 160C/W TJMAX = 150C, JA = 190C/W ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT1009MH#PBF LT1009CH#PBF LT1009CMS8#PBF LT1009CMS8#TRPBF LT1009S8#PBF PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT1009MH#TRPBF 3-Lead TO-46 Metal Can -55C to 125C LT1009CH#TRPBF 3-Lead TO-46 Metal Can 0C to 70C LTQZ 8-Lead Plastic MSOP 0C to 70C LT1009S8#TRPBF 1009 8-Lead Plastic SO 0C to 70C LT1009IS8#PBF LT1009IS8#TRPBF 1009I 8-Lead Plastic SO -40C to 85C LT1009CZ#PBF LT1009CZ#TRPBF 3-Lead Plastic TO-92 0C to 70C LT1009IZ#PBF LT1009IZ#TRPBF 3-Lead Plastic TO-92 -40C to 85C 1009ff 2 LT1009 Series ORDER INFORMATION LEAD BASED FINISH TAPE AND REEL LT1009MH PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LT1009MH#TR 3-Lead TO-46 Metal Can -55C to 125C LT1009CH LT1009CH#TR 3-Lead TO-46 Metal Can 0C to 70C LT1009CMS8 LT1009CMS8#TR LTQZ 8-Lead Plastic MSOP 0C to 70C LT1009S8 LT1009S8#TR 1009 8-Lead Plastic SO 0C to 70C LT1009IS8 LT1009IS8#TR 1009I 8-Lead Plastic SO -40C to 85C LT1009CZ LT1009CZ#TR 3-Lead Plastic TO-92 0C to 70C LT1009IZ LT1009IZ#TR 3-Lead Plastic TO-92 -40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ AVAILABLE OPTIONS TEMPERATURE 0C to 70C -40C to 85C -55C to 125C ACCURACY (%) 0.20 0.40 0.20 0.40 0.20 TEMPERATURE COEFFICIENT (ppm/C) 25 25 35 35 35 PACKAGE STYLE MSOP-8 SO-8 (MS8) (S8) TO-46 (H) OBSOLETE LT1009CH LT1009CMS8 TO-92 (Z) LT1009CZ LT1009S8 LT1009IZ LT1009IS8 LT1009MH ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25C. SYMBOL PARAMETER CONDITIONS MIN LT1009/LT1009C MIN TYP MAX UNITS 2.495 2.500 2.505 2.495 2.500 2.505 2.495 2.500 2.505 2.49 2.50 2.51 2.49 2.50 2.51 V V VZ Reverse Breakdown Voltage TA = 25C, IR = 1mA H, Z Pkg MS, S Pkg VZ IR Reverse Breakdown Change with Current 400A IR 10mA rZ Reverse Dynamic Impedance IR = 1mA Temperature Stability TMIN TA TMAX LT100M TYP MAX MIN LT1009I TYP MAX l 2.6 3.0 6 10 2.6 3.0 10 12 2.6 3.0 10 12 mV mV l 0.2 0.4 0.6 1.0 0.2 0.4 1.0 1.4 0.2 0.4 1.0 1.4 15 1.8 4 mV 25 35 15 25 ppm/C ppm/C ppm/C l 15 VZ Temp Average Temperature 0C TA 70C Coefficient (Notes 2, 3) -40C TA 85C -55C TA 125C 15 25 25 35 VZ Time Long-Term Stability 20 TA = 25C 0.1C, IR = 1mA Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. 15 20 20 ppm/kHr Note 2: Guaranteed by Design. Note 3: Average temperature coefficient is defined as the total voltage change divided by the specified temperature change. 1009ff 3 LT1009 Series TYPICAL PERFORMANCE CHARACTERISTICS Reverse Characteristics Forward Characteristics 10-1 1.2 Reverse Voltage Change 5 REVERSE VOLTAGE CHANGE (mV) TJ = 25C FORWARD VOLTAGE (V) REVERSE CURRENT (A) 1.0 10-2 10-3 TJ = 25C TJ = 125C 10-4 0.8 0.6 0.4 0.2 4 3 2 1 TJ = -55C 10-5 0.5 1.0 1.8 2.2 1.4 REVERSE VOLTAGE (V) 0 0.001 2.6 0 0.01 0.1 1 4 0 10 FORWARD CURRENT (mA) 12 16 8 REVERSE CURRENT (mA) 20 1009 G02 1009 G03 1009 G01 Dynamic Impedance Output Noise Voltage 100 250 DYNAMIC IMPEDANCE () IR = 1mA -55C TJ 125C Response Time IR = 1mA TJ = 25C NOISE (nV/Hz) 1 3.0 150 100 OUTPUT 2.5 VOLTAGE SWING (V) 200 10 3.5 2.0 1.5 5k 1.0 0.5 INPUT OUTPUT 0 10 INPUT 4 0.1 10 100 1k 10k FREQUENCY (Hz) 100k 50 0 10 100 1k 10k 100k FREQUENCY (Hz) 1009 G04 1009 G05 0 1 TIME (s) 20 1009 G06 1009ff 4 LT1009 Series SCHEMATIC DIAGRAM + Q11 Q7 24k 24k 6.6k Q8 Q7 20pF 30pF 10k Q10 500 Q9 Q2 ADJ 30k 6.6k Q4 Q1 Q12 Q6 Q3 Q13 720 Q5 - 1009 SD TYPICAL APPLICATIONS Wide Supply Range, Adjustable Reference Low Temperature Coefficient Power Regulator 3.6V TO 40V VIN V+ LM334 V- R IN LT317A OUT ADJ 62 VOUT 1.2k 375 LT1009 LT1009 10k 2k 1009 TA03 1009 TA04 Switchable 1.25V Bipolar Reference 5V 5k 5V 5k LT1009 -5V 10k 1% OUT 9.76k 1% 500 1009 TA05 5k -5V 1009ff 5 LT1009 Series PACKAGE DESCRIPTION H Package 2-Lead and 3-Lead TO-46 Metal Can (Reference LTC DWG # 05-08-1340) .209 - .219 (5.309 - 5.537) .178 - .195 (4.521 - 4.953) REFERENCE PLANE .085 - .105 (2.159 - 2.667) .050 (1.270) TYP .500 (12.700) MIN .100 (2.540) TYP .050 (1.270) TYP PIN 1 FOR 3-LEAD PACKAGE ONLY SEATING* PLANE .025 (0.635) MAX 45o .028 - .048 (0.711 - 1.219) .036 - .046 (0.914 - 1.168) .016 - .019** (0.406 - 0.483) DIA H02/03(TO-46) 0801 *LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND .050" BELOW THE REFERENCE PLANE .016 - .024 **FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS (0.406 - 0.610) OBSOLETE PACKAGE MS8 Package 8-Lead Plastic MSOP (Reference LTC DWG # 05-08-1660) 3.00 p 0.102 (.118 p .004) (NOTE 3) 0.889 p 0.127 (.035 p .005) 0.254 (.010) 8 7 6 5 3.00 p 0.102 (.118 p .004) (NOTE 4) 4.90 p 0.152 (.193 p .006) DETAIL "A" 0.52 (.0205) REF 0o - 6o TYP GAUGE PLANE 5.23 (.206) MIN 1 0.53 p 0.152 (.021 p .006) 3.20 - 3.45 (.126 - .136) DETAIL "A" 0.42 p 0.038 (.0165 p .0015) TYP 0.65 (.0256) BSC RECOMMENDED SOLDER PAD LAYOUT 2 3 4 1.10 (.043) MAX 0.86 (.034) REF 0.18 (.007) SEATING PLANE 0.22 - 0.38 (.009 - .015) TYP 0.65 (.0256) BSC 0.1016 p 0.0508 (.004 p .002) MSOP (MS8) 0307 REV F NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE 5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX 1009ff 6 LT1009 Series PACKAGE DESCRIPTION S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .189 - .197 (4.801 - 5.004) NOTE 3 .045 .005 .050 BSC 8 .245 MIN 7 6 5 .160 .005 .150 - .157 (3.810 - 3.988) NOTE 3 .228 - .244 (5.791 - 6.197) .030 .005 TYP 1 RECOMMENDED SOLDER PAD LAYOUT .010 - .020 x 45 (0.254 - 0.508) .008 - .010 (0.203 - 0.254) 2 3 .053 - .069 (1.346 - 1.752) .004 - .010 (0.101 - 0.254) 0- 8 TYP .016 - .050 (0.406 - 1.270) NOTE: 1. DIMENSIONS IN 4 .050 (1.270) BSC .014 - .019 (0.355 - 0.483) TYP INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) SO8 0303 Z Package 3-Lead Plastic TO-92 (Similar to TO-226) (Reference LTC DWG # 05-08-1410) .180 p .005 (4.572 p 0.127) .060 p .005 (1.524p 0.127) DIA .90 (2.286) NOM .180 p .005 (4.572 p 0.127) .500 (12.70) MIN .050 UNCONTROLLED (1.270) LEAD DIMENSION MAX .016 p .003 (0.406 p 0.076) .050 (1.27) BSC BULK PACK .060 p .010 (1.524 p 0.254) 3 2 1 5o NOM .015 p .002 (0.381 p 0.051) Z3 (TO-92) 1008 REV C .098 +.016/-.04 (2.5 +0.4/-0.1) 2 PLCS TO-92 TAPE AND REEL REFER TO TAPE AND REEL SECTION OF LTC DATA BOOK FOR ADDITIONAL INFORMATION .140 p .010 (3.556 p 0.127) 10o NOM 1009ff Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 7 LT1009 Series TYPICAL APPLICATION Low Noise 2.5V Buffered Reference 1F VIN 6V 10k 2 1k 10k 1k + 7 LT1001C 3 + 6 2.5V 4 20F 100k LT1009 - + 20F 1009 TA06 RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1019 Precision Series Reference Bandgap, 0.05%, 5ppm/C LT1236 Precision Series Reference 5V and 10V Zener-Based 5ppm/C, SO-8 Package LTC(R)1798 Micropower Low Dropout Series Reference 0.15% Max, 6.5A Supply Current LT1460 Micropower Precision Series Reference Bandgap, 130A Supply Current 10ppm/C, Available in SOT-23 LT1634 Micropower Precision Shunt Voltage Reference Bandgap 0.05%, 10ppm/C, 10A Supply Current LT1461 Micropower Precision Series Reference 0.04% Max, 3ppm/C Max, 35A Supply Current 1009ff 8 Linear Technology Corporation LT 0109 REV F * PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear.com (c) LINEAR TECHNOLOGY CORPORATION 1985