Order this document by LM285/D The LM285/LM385 series are micropower two–terminal bandgap voltage regulator diodes. Designed to operate over a wide current range of 10 µA to 20 mA, these devices feature exceptionally low dynamic impedance, low noise and stable operation over time and temperature. Tight voltage tolerances are achieved by on–chip trimming. The large dynamic operating range enables these devices to be used in applications with widely varying supplies with excellent regulation. Extremely low operating current make these devices ideal for micropower circuitry like portable instrumentation, regulators and other analog circuitry where extended battery life is required. The LM285/LM385 series are packaged in a low cost TO–226AA plastic case and are available in two voltage versions of 1.235 and 2.500 V as denoted by the device suffix (see Ordering Information table). The LM285 is specified over a –40°C to +85°C temperature range while the LM385 is rated from 0°C to +70°C. The LM385 is also available in a surface mount plastic package in voltages of 1.235 and 2.500 V. • Operating Current from 10 µA to 20 mA • • • • 1.0%, 1.5%, 2.0% and 3.0% Initial Tolerance Grades MICROPOWER VOLTAGE REFERENCE DIODES SEMICONDUCTOR TECHNICAL DATA Z SUFFIX PLASTIC PACKAGE CASE 29 (Bottom View) 3 2 1 N.C. Cathode Anode D SUFFIX PLASTIC PACKAGE CASE 751 (SO–8) N.C. 1 Low Temperature Coefficient 1.0 Ω Dynamic Impedance 8 Cathode N.C. 2 7 N.C. N.C. 3 6 N.C. Anode 4 5 N.C. Surface Mount Package Available Standard Application + 1.5 V Battery 3.3 k – 1.235 V Representative Schematic Diagram LM385–1.2 Cathode 10 k 360 k Open for 1.235 V 600 k ORDERING INFORMATION Device 8.45 k LM285D–1.2 LM285Z–1.2 LM285D–2.5 LM285Z–2.5 74.3 k Open for 2.5 V 600 k Reverse Break– Operating Temperature down Voltage Tolerance Range TA = – 40° to +85°C LM385BD–1.2 LM385BZ–1.2 425 k LM385D–1.2 LM385Z–1.2 500 Ω 600 k 100 k LM385BD–2.5 LM385BZ–2.5 LM385D–2.5 LM385Z–2.5 TA = 0° to +70°C 1.235 V ± 1.0% 2.500 V ± 1.5% 1.235 V ± 1.0% 1.235 V ± 2.0% 2.500 V ± 1.5% 2.500 V ± 3.0% Anode Motorola, Inc. 1996 MOTOROLA ANALOG IC DEVICE DATA Rev 2 1 LM285 LM385, B MAXIMUM RATINGS (TA = 25°C, unless otherwise noted) Rating Symbol Value Unit Reverse Current IR 30 mA Forward Current IF 10 mA Operating Ambient Temperature Range LM285 LM385 TA Operating Junction Temperature Storage Temperature Range °C – 40 to + 85 0 to +70 TJ + 150 °C Tstg – 65 to + 150 °C ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted) LM285–1.2 Characteristic Reverse Breakdown Voltage (IRmin LM285–1.2/LM385B–1.2 TA = Tlow to Thigh (Note 1) LM385–1.2 TA = Tlow to Thigh (Note 1) p IR p 20 mA) Minimum Operating Current TA = 25°C TA = Tlow to Thigh (Note 1) Reverse Breakdown Voltage Change with Current IRmin IR 1.0 mA, TA = +25°C TA = Tlow to Thigh (Note 1) 1.0 mA IR 20 mA, TA = +25°C TA = Tlow to Thigh (Note 1) p p p p Reverse Dynamic Impedance IR = 100 µA, TA = +25°C Symbol LM385–1.2/LM385B–1.2 Min Typ Max Min Typ Max 1.223 1.200 – – 1.235 – – – 1.247 1.270 – – 1.223 1.210 1.205 1.192 1.235 – 1.235 – 1.247 1.260 1.260 1.273 – – 8.0 – 10 20 – – 8.0 – 15 20 – – – – – – – – 1.0 1.5 10 20 – – – – – – – – 1.0 1.5 20 25 0.6 – – 0.6 – W V(BR)R Unit V µA IRmin ∆V(BR)R mV Z ∆V(BR)/∆T – 80 – – 80 – ppm/°C Wideband Noise (RMS) IR = 100 µA, 10 Hz f n – 60 – – 60 – µV Long Term Stability IR = 100 µA, TA = +25°C ± 0.1°C S – 20 – – 20 – ppm/ kHR Average Temperature Coefficient 10 µA IR 20 mA, TA = Tlow to Thigh (Note 1) p p p p 10 kHz 2 MOTOROLA ANALOG IC DEVICE DATA LM285 LM385, B ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted) LM285–2.5 Characteristic Reverse Breakdown Voltage (IRmin LM285–2.5/LM385B–2.5 TA = Tlow to Thigh (Note 1) LM385–2.5 TA = Tlow to Thigh (Note 1) p IR p 20 mA) Minimum Operating Current TA = 25°C TA = Tlow to Thigh (Note 1) Reverse Breakdown Voltage Change with Current IRmin IR 1.0 mA, TA = +25°C TA = Tlow to Thigh (Note 1) 1.0 mA IR 20 mA, TA = +25°C TA = Tlow to Thigh (Note 1) p p p p Reverse Dynamic Impedance IR = 100 µA, TA = +25°C Symbol LM385–2.5/LM385B–2.5 Min Typ Max Min Typ Max 2.462 2.415 – – 2.5 – – – 2.538 2.585 – – 2.462 2.436 2.425 2.400 2.5 – 2.5 – 2.538 2.564 2.575 2.600 – – 13 – 20 30 – – 13 – 20 30 – – – – – – – – 1.0 1.5 10 20 – – – – – – – – 2.0 2.5 20 25 0.6 – – 0.6 – W V(BR)R Unit V µA IRmin ∆V(BR)R mV Z ∆V(BR)/∆T – 80 – – 80 – ppm/°C Wideband Noise (RMS) IR = 100 µA, 10 Hz f n – 120 – – 120 – µV Long Term Stability IR = 100 µA, TA = +25°C ± 0.1°C S – 20 – – 20 – ppm/ kHR Average Temperature Coefficient 20 µA IR 20 mA, TA = Tlow to Thigh (Note 1) p p p p 10 kHz NOTES: 1. Tlow = – 40°C for LM285–1.2, LM285–2.5 = 0°C for LM385–1.2, LM385B–1.2, LM385–2.5, LM385B–2.5 MOTOROLA ANALOG IC DEVICE DATA Thigh = +85°C for LM285–1.2, LM285–2.5 Thigh = +70°C for LM385–1.2, LM385B–1.2, LM385–2.5, LM385B–2.5 3 LM285 LM385, B TYPICAL PERFORMANCE CURVES FOR LM285–1.2/385–1.2/385B–1.2 Figure 2. Reverse Characteristics IR, REVERSE CURRENT ( µ A) 10 TA = + 85°C 1.0 + 25°C 0.1 0 0.2 – 40°C 0.4 0.6 0.8 1.0 V(BR), REVERSE VOLTAGE (V) 1.2 1.4 ∆V(BR)R, REVERSE VOLTAGE CHANGE (mV) Figure 1. Reverse Characteristics 100 10 8.0 TA = + 85°C 6.0 + 25°C 4.0 – 40°C 2.0 0 –2.0 0.01 0.1 Figure 3. Forward Characteristics 1.0 10 IR, REVERSE CURRENT (mA) 100 Figure 4. Temperature Drift 1.2 V(BR)R, REVERSE VOLTAGE (V) VF, FORWARD VOLTAGE (V) 1.250 1.0 TA = – 40°C 0.8 0.6 + 25°C + 85°C 0.4 0.2 0 0.01 1.230 1.220 1.210 0.1 1.0 10 IF , FORWARD CURRENT (mA) IR = 100 µA 1.240 100 –50 –25 0 25 50 75 TA , AMBIENT TEMPERATURE (°C) Figure 5. Noise Voltage 1.50 1.25 OUTPUT (V) √Hz) 750 e n , NOISE (nV/ 125 Figure 6. Response Time 875 625 500 Input 100 k 1.00 0.75 Output 0.50 DUT 0.25 375 0 INPUT (V) 250 125 0 4 100 10 100 1.0 K f, FREQUENCY (Hz) 10 K 100 k 10 5.0 0 0 0.1 0.2 0.3 0.6 0.7 t, TIME (ms) 0.8 0.9 1.0 1.1 MOTOROLA ANALOG IC DEVICE DATA LM285 LM385, B TYPICAL PERFORMANCE CURVES FOR LM285–2.5/385–2.5/385B–2.5 Figure 8. Reverse Characteristics IR, REVERSE CURRENT ( µ A) 10 TA = + 85°C + 25°C 1.0 – 40°C 0.1 0 0.5 1.0 1.5 2.0 2.5 V(BR), REVERSE VOLTAGE (V) 3.0 3.5 ∆V(BR)R, REVERSE VOLTAGE CHANGE (mV) Figure 7. Reverse Characteristics 100 10 TA = + 85°C 8.0 6.0 + 25°C 2.0 0 –2.0 0.01 0.1 Figure 9. Forward Characteristics V(BR)R, REVERSE VOLTAGE (V) VF, FORWARD VOLTAGE (V) 1.0 TA = – 40°C 0.8 0.6 0.2 0 0.01 + 85°C + 25°C 2.520 2.500 2.490 2.480 2.470 2.460 100 –50 –25 0 25 50 75 TA , AMBIENT TEMPERATURE (°C) Figure 11. Noise Voltage 100 125 Figure 12. Response Time 3.00 2.50 √Hz) OUTPUT (V) 1500 1250 e n , NOISE (nV/ 100 IR = 100 µA 2.510 2.450 0.1 1.0 10 IF , FORWARD CURRENT (mA) 1.0 10 IR, REVERSE CURRENT (mA) Figure 10. Temperature Drift 1.2 0.4 – 40°C 4.0 1000 Input 100 k 2.00 1.50 Output 1.00 DUT 0.50 750 0 INPUT (V) 500 250 0 10 100 1.0 K f, FREQUENCY (Hz) 10 K MOTOROLA ANALOG IC DEVICE DATA 100 k 10 5.0 0 0 0.1 0.2 0.3 0.6 0.7 t, TIME (ms) 0.8 0.9 1.0 1.1 5 LM285 LM385, B OUTLINE DIMENSIONS Z SUFFIX PLASTIC PACKAGE CASE 29–04 ISSUE AD A NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. CONTOUR OF PACKAGE BEYOND DIMENSION R IS UNCONTROLLED. 4. DIMENSION F APPLIES BETWEEN P AND L. DIMENSION D AND J APPLY BETWEEN L AND K MINIMUM. LEAD DIMENSION IS UNCONTROLLED IN P AND BEYOND DIMENSION K MINIMUM. B R P L F SEATING PLANE K DIM A B C D F G H J K L N P R V D X X G J H V C SECTION X–X 1 N N D SUFFIX PLASTIC PACKAGE CASE 751–05 (SO–8) ISSUE N –A– 8 1 4X P 0.25 (0.010) 4 M B M G R C –T– 8X D 0.25 (0.010) 6 K M T B SEATING PLANE S A M_ S X 45 _ F J MILLIMETERS MIN MAX 4.45 5.20 4.32 5.33 3.18 4.19 0.41 0.55 0.41 0.48 1.15 1.39 2.42 2.66 0.39 0.50 12.70 ––– 6.35 ––– 2.04 2.66 ––– 2.54 2.93 ––– 3.43 ––– NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. 5 –B– INCHES MIN MAX 0.175 0.205 0.170 0.210 0.125 0.165 0.016 0.022 0.016 0.019 0.045 0.055 0.095 0.105 0.015 0.020 0.500 ––– 0.250 ––– 0.080 0.105 ––– 0.100 0.115 ––– 0.135 ––– DIM A B C D F G J K M P R MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.18 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 INCHES MIN MAX 0.189 0.196 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.007 0.009 0.004 0.009 0_ 7_ 0.229 0.244 0.010 0.019 MOTOROLA ANALOG IC DEVICE DATA LM285 LM385, B Motorola reserves the right to make changes without further notice to any products herein. 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How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 or 602–303–5454 JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315 MFAX: [email protected] – TOUCHTONE 602–244–6609 INTERNET: http://Design–NET.com ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 MOTOROLA ANALOG IC DEVICE DATA ◊ LM285/D7 *LM285/D*