LT1634

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Technical content

FEATURES

APPLICATIONS

DESCRIPTION

2.5V Reference The L T®1009 is a precision trimmed 2.5V shunt regula- tor 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. Even though no adjustments are needed with the L T1009, a third terminal allows the reference voltage to be adjusted ±5% to calibrate out system errors. In many applications, the L T1009 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 L T1019 data sheet. 2.5V Reference n Reference for 5V Systems n 8-Bit A/D and D/A Reference n Digital Voltmeters n Current Loop Measurement and Control Systems n Power Supply Monitor L, L T , L TC and L TM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Maximum Initial Tolerance: 0.2% n Guaranteed Temperature Stability n Maximum 0.6Ω Dynamic Impedance n Wide Operating Current Range n Directly Interchangeable with LM136 for Improved Performance n No Adjustments Needed for Minimum Temperature Coeffi cient n Available in 8-Lead SO and MSOP Packages and 3-Lead TO-92 Package L T1009 OUTPUT 3.6k 5V TO 35V 10k* TRIM

1009 TA01

*DOES NOT AFFECT TEMPERATURE COEFFICIENT . ±5% TRIM RANGE Output Voltage TEMPERATURE (°C) –50 REFERENCE VOLTAGE (V) 2.53 2.52 2.51 2.50 2.49 2.48 2.47 25 75

1009 TA02

–25 0 50 100 125 TYPICAL GUARANTEED MAXIMUM GUARANTEED MINIMUM

(Note 1) BOTTOM VIEW ADJ + H PACKAGE 3-LEAD TO-46 METAL CAN TJMAX = 150°C, θJA = 440°C/W , θJC = 80°C/W OBSOLETE PACKAGE Consider the MS8, S8 or Z Packages for Alternate Source NC NC NC (–) (+) NC (+) ADJ TOP VIEW MS8 PACKAGE 8-LEAD PLASTIC MSOP TJMAX = 150°C, θJA = 250°C/W TOP VIEW (+) NC (+) ADJ NC NC NC (–) S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 150°C, θJA = 190°C/W BOTTOM VIEW Z PACKAGE 3-LEAD PLASTIC TO-92 –+ADJ TJMAX = 100°C, θJA = 160°C/W PIN CONFIGURATION ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE L T1009MH#PBF L T1009MH#TRPBF 3-Lead TO-46 Metal Can –55°C to 125°C L T1009CH#PBF L T1009CH#TRPBF 3-Lead TO-46 Metal Can 0°C to 70°C L T1009CMS8#PBF L T1009CMS8#TRPBF L TQZ 8-Lead Plastic MSOP 0°C to 70°C L T1009S8#PBF L T1009S8#TRPBF 1009 8-Lead Plastic SO 0°C to 70°C L T1009IS8#PBF L T1009IS8#TRPBF 1009I 8-Lead Plastic SO –40°C to 85°C L T1009CZ#PBF L T1009CZ#TRPBF 3-Lead Plastic TO-92 0°C to 70°C L T1009IZ#PBF L T1009IZ#TRPBF 3-Lead Plastic TO-92 –40°C to 85°C Operating Temperature Range

ELECTRICAL CHARACTERISTICS The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE L T1009MH L T1009MH#TR 3-Lead TO-46 Metal Can –55°C to 125°C L T1009CH L T1009CH#TR 3-Lead TO-46 Metal Can 0°C to 70°C L T1009CMS8 L T1009CMS8#TR L TQZ 8-Lead Plastic MSOP 0°C to 70°C L T1009S8 L T1009S8#TR 1009 8-Lead Plastic SO 0°C to 70°C L T1009IS8 L T1009IS8#TR 1009I 8-Lead Plastic SO –40°C to 85°C L T1009CZ L T1009CZ#TR 3-Lead Plastic TO-92 0°C to 70°C L T1009IZ L T1009IZ#TR 3-Lead Plastic TO-92 –40°C to 85°C Consult L TC Marketing for parts specifi ed 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 specifi cations, go to: http://www.linear .com/tapeandreel/ ORDER INFORMATION TEMPERATURE PACKAGE STYLE TEMPERATURE ACCURACY (%) COEFFICIENT (ppm/°C) TO-46 (H) OBSOLETE MSOP-8 (MS8) SO-8 (S8) TO-92 (Z) 0°C to 70°C 0.20 0.40 L T1009CH L T1009CMS8 L T1009S8 L T1009CZ –40°C to 85°C 0.20 0.40

35 L T1009IS8

–55°C to 125°C 0.20 35 L T1009MH AVAILABLE OPTIONS SYMBOL PARAM ETER CONDITIONS L T100M L T1009I L T1009/L T1009C UNITSMIN TYP MAX MIN TYP MAX MIN TYP MAX VZ Reverse Breakdown Voltage TA = 25°C, IR = 1mA H, Z Pkg MS, S Pkg 2.495 2.500 2.505 2.495 2.49 2.500 2.50 2.505 2.51 2.495 2.49 2.500 2.50 2.505 2.51 V V ΔVZ ΔIR Reverse Breakdown Change with Current 400μA ≤ IR ≤ 10mA l 2.6 3.0 2.6 3.0 2.6 3.0 mV mV rZ Reverse Dynamic Impedance IR = 1mA 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 Ω Ω Temperature Stability T MIN ≤ TA ≤ TMAX l 15 15 1.8 4 mV ΔVZ ΔTemp Average Temperature Coeffi cient (Notes 2, 3) 0°C ≤ TA ≤ 70°C –40°C ≤ TA ≤ 85°C –55°C ≤ TA ≤ 125°C 15 25 15 25 ppm/°C ppm/°C ppm/°C ΔV Z ΔTime Long-Term Stability T A = 25°C ±0.1°C, IR = 1mA 20 20 20 ppm/kHr 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. Note 2: Guaranteed by Design. Note 3: Average temperature coeffi cient is defi ned as the total voltage change divided by the specifi ed temperature change.

TYPICAL PERFORMANCE CHARACTERISTICS Reverse Characteristics Forward Characteristics Reverse Voltage Change Dynamic Impedance Output Noise Voltage Response Time REVERSE VOLTAGE (V) 0.5 REVERSE CURRENT (A) 10–1 10–2 10–3 10–4 10–5 2.2

1009 G01

1.0 1.4 1.8 2.6 TJ = 125°C TJ = –55°C TJ = 25°C FORWARD CURRENT (mA) 0.001 FORWARD VOLTAGE (V) 1.2 1.0 0.8 0.6 0.4 0.2 0.01 0.1 1 10

1009 G02

TJ = 25°C REVERSE CURRENT (mA) REVERSE VOLTAGE CHANGE (mV)

1009 G03

FREQUENCY (Hz) DYNAMIC IMPEDANCE (Ω) 100 0.1 100 1k 10k 100k

1009 G04

IR = 1mA –55°C ≤ TJ ≤ 125°C FREQUENCY (Hz) 10 100k

1009 G05

NOISE (nV/√Hz) IR = 1mA TJ = 25°C TIME (μs) VOLTAGE SWING (V) 3.5 3.0 2.5 2.0 1.5 1.0 0.5

1009 G06

720Ω 6.6k 6.6k 500Ω ADJ 30k 1009 SD Q10 Q12 Q13 TYPICAL APPLICATIONS Wide Supply Range, Adjustable Reference Low Temperature Coeffi cient Power Regulator L T1009 62Ω V– R 3.6V TO 40V 10k

1009 TA03

375Ω 1.2k VIN VOUT

1009 TA04

Switchable ±1.25V Bipolar Reference L T1009 OUT 5k5V –5V –5V 10k 9.76k 500Ω

1009 TA05

(Reference L TC DWG # 05-08-1660) PACKAGE DESCRIPTION H Package 2-Lead and 3-Lead TO-46 Metal Can (Reference L TC DWG # 05-08-1340) OBSOLETE PACKAGE .016 – .019** (0.406 – 0.483) DIA .025 (0.635) MAX .085 – .105 (2.159 – 2.667) .500 (12.700) MIN .178 – .195 (4.521 – 4.953) .209 – .219 (5.309 – 5.537) .100 (2.540) TYP 45o H02/03(TO-46) 0801 .050 (1.270) TYP .050 (1.270) TYP .028 – .048 (0.711 – 1.219) .036 – .046 (0.914 – 1.168) FOR 3-LEAD PACKAGE ONL Y REFERENCE PLANE SEATING* PLANE LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND .050" BELOW THE REFERENCE PLANE FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS .016 – .024 (0.406 – 0.610) PIN 1 MSOP (MS8) 0307 REV F 0.53 p 0.152 (.021 p .006) SEATING PLANE 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 0.18 (.007) 0.254 (.010) 1.10 (.043) MAX 0.22 – 0.38 (.009 – .015) TYP 0.1016 p 0.0508 (.004 p .002) 0.86 (.034) REF 0.65 (.0256) BSC 0o – 6o TYP DETAIL “A” DETAIL “A” GAUGE PLANE 12 3 4 4.90 p 0.152 (.193 p .006) 8 7 6 5 3.00 p 0.102 (.118 p .004) (NOTE 3) 3.00 p 0.102 (.118 p .004) (NOTE 4) 0.52 (.0205) REF 5.23 (.206) MIN 3.20 – 3.45 (.126 – .136) 0.889 p 0.127 (.035 p .005) RECOMMENDED SOLDER PAD LAYOUT 0.42 p 0.038 (.0165 p .0015) TYP 0.65 (.0256) BSC

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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. PACKAGE DESCRIPTION 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference L TC DWG # 05-08-1610) Z Package 3-Lead Plastic TO-92 (Similar to TO-226) (Reference L TC DWG # 05-08-1410) .016 – .050 (0.406 – 1.270) .010 – .020 0°– 8° TYP .008 – .010 (0.203 – 0.254) SO8 0303 .053 – .069 (1.346 – 1.752) .014 – .019 (0.355 – 0.483) TYP .004 – .010 (0.101 – 0.254) .050 (1.270) BSC 1 2 3 4 .150 – .157 (3.810 – 3.988) NOTE 3 8 7 6 5 .189 – .197 (4.801 – 5.004) NOTE 3 .228 – .244 (5.791 – 6.197) .245 MIN .160 ±.005 RECOMMENDED SOLDER PAD LAYOUT .045 ±.005 .050 BSC .030 ±.005 TYP INCHES (MILLIMETERS) NOTE: 1. DIMENSIONS IN 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) .050 (1.27) BSC .060 p .005 (1.524p 0.127) DIA .90 (2.286) NOM .180 p .005 (4.572 p 0.127) .180 p .005 (4.572 p 0.127) .500 (12.70) MIN .050 (1.270) MAX UNCONTROLLED LEAD DIMENSION .016 p .003 (0.406 p 0.076) NOM BULK PACK .015 p .002 (0.381 p 0.051) .060 p .010 (1.524 p 0.254) 10oNOM .140 p .010 (3.556 p 0.127) Z3 (TO-92) 1008 REV C 321 .098 +.016/–.04 (2.5 +0.4/–0.1)

2 PLCS

REFER TO TAPE AND REEL SECTION OF LTC DATA BOOK FOR ADDITIONAL INFORMATION

Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear .com © LINEAR TECHNOLOGY CORPORATION 1985 LT 0109 REV F • PRINTED IN USA RELATED PARTS TYPICAL APPLICATION Low Noise 2.5V Buffered Reference L T1009 VIN ≥ 6V 20μF 2.5V 10k 1k10k 100k 1μF

1009 TA06

20μF PART NUMBER DESCRIPTION COMMENTS L T1019 Precision Series Reference Bandgap, 0.05%, 5ppm/°C L T1236 Precision Series Reference 5V and 10V Zener-Based 5ppm/°C, SO-8 Package LT C 1798 Micropower Low Dropout Series Reference 0.15% Max, 6.5μA Supply Current L T1460 Micropower Precision Series Reference Bandgap, 130μA Supply Current 10ppm/°C, Available in SOT-23 L T1634 Micropower Precision Shunt Voltage Reference Bandgap 0.05%, 10ppm/°C, 10μA Supply Current L T1461 Micropower Precision Series Reference 0.04% Max, 3ppm/°C Max, 35μA Supply Current