LM285, LM385B Micropower Voltage Reference Diodes

1 LM285, LM385B . Micropower Voltage Reference Diodes The LM285/LM385 series are Micropower two-terminal bandgap Voltage regulator Diodes . Designed to operate over a wide current range of 10 mA 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 MARKING. be used in applications with widely varying supplies with excellent DIAGRAMS. regulation. Extremely low operating current make these devices ideal 8. for Micropower circuitry like portable instrumentation, regulators and SOIC-8 y85-z other analog circuitry where extended battery life is required.

2 8 D SUFFIX ALYW. The LM285/LM385 series are packaged in a low cost TO-226 CASE 751 G. 1. plastic case and are available in two Voltage versions of V and 1. 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 TO-92 LMy85. voltages of V and V. (TO-226) Z-xxx Z SUFFIX ALYWW G. Cathode CASE 29 G. Features Anode Operating Current from 10 mA to 20 mA. , , and Initial Tolerance Grades xxx = or Low Temperature Coefficient y = 2 or 3. z = 1 or 2. W Dynamic Impedance A = Assembly Location Surface Mount Package Available L = Wafer Lot Pb-Free Packages are Available Y = Year W, WW = Work Week G = Pb-Free Package Cathode (Note: Microdot may be in either location).

3 10 k 360 k (Bottom View) 1 8 Cathode Open 1 2 3. 2 7 for V. 3 6 Anode 4 5 600 k k Standard Application k 600 k +. Open V k for V 425 k Battery - V. 600 k 500 W 100 k Anode ORDERING INFORMATION. Figure 1. Representative Schematic Diagram See detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. Semiconductor Components Industries, LLC, 2008 1 Publication Order Number: March, 2008 - Rev. 8 LM285/D. LM285, LM385B . 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 TA C. LM285 -40 to +85. LM385 0 to +70. Operating Junction Temperature TJ +150 C. Storage Temperature Range Tstg -65 to + 150 C.

4 Electrostatic Discharge Sensitivity (ESD) ESD V. Human Body Model (HBM) 4000. Machine Model (MM) 400. Charged Device Model (CDM) 2000. Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. ELECTRICAL CHARACTERISTICS (TA = 25 C, unless otherwise noted). Characteristic Symbol Min Typ Max Min Typ Max Unit Reverse Breakdown Voltage (IRmin v IR v 20 mA) V(BR)R V. TA = Tlow to Thigh (Note 1) - - - - - TA = Tlow to Thigh (Note 1) - - - - Minimum Operating Current IRmin mA. TA = 25 C - 10 15. TA = Tlow to Thigh (Note 1) - - 20 - - 20.

5 Reverse Breakdown Voltage Change with Current DV(BR)R mV. IRmin v IR v mA, TA = +25 C - - - - TA = Tlow to Thigh (Note 1) - - - - mA v IR v 20 mA, TA = +25 C - - 10 - - 20. TA = Tlow to Thigh (Note 1) - - 20 - - 25. Reverse Dynamic Impedance Z W. IR = 100 mA, TA = +25 C - - - - Average Temperature Coefficient DV(BR)/DT ppm/ C. 10 mA v IR v 20 mA, TA = Tlow to Thigh (Note 1) - 80 - - 80 - Wideband Noise (RMS) n mV. IR = 100 mA, 10 Hz v f v 10 kHz - 60 - - 60 - Long Term Stability S ppm/kHR. IR = 100 mA, TA = +25 C C - 20 - - 20 - Reverse Breakdown Voltage (IRmin v IR v 20 mA) V(BR)R V. TA = Tlow to Thigh (Note 1) - - - - - TA = Tlow to Thigh (Note 1) - - - - Minimum Operating Current IRmin mA. TA = 25 C - 13 20 - 13 20. TA = Tlow to Thigh (Note 1) - - 30 - - 30.

6 1. Tlow = -40 C for , Thigh = +85 C for , Tlow = 0 C for , , , Thigh = +70 C for , , , 2. LM285, LM385B . ELECTRICAL CHARACTERISTICS (TA = 25 C, unless otherwise noted). Characteristic Symbol Min Typ Max Min Typ Max Unit Reverse Breakdown Voltage Change with Current DV(BR)R mV. IRmin v IR v mA, TA = +25 C - - - - TA = Tlow to Thigh (Note 2) - - - - mA v IR v 20 mA, TA = +25 C - - 10 - - 20. TA = Tlow to Thigh (Note 2) - - 20 - - 25. Reverse Dynamic Impedance Z W. IR = 100 mA, TA = +25 C - - - - Average Temperature Coefficient DV(BR)/DT ppm/ C. 20 mA v IR v 20 mA, TA = Tlow to Thigh (Note 2) - 80 - - 80 - Wideband Noise (RMS) n mV. IR = 100 mA, 10 Hz v f v 10 kHz - 120 - - 120 - Long Term Stability S ppm/kHR. IR = 100 mA, TA = +25 C C - 20 - - 20 - 2.

7 Tlow = -40 C for , Thigh = +85 C for , Tlow = 0 C for , , , Thigh = +70 C for , , , 3. LM285, LM385B . TYPICAL PERFORMANCE CURVES FOR V(BR)R, REVERSE Voltage CHANGE (mV). 100. 10. IR, REVERSE CURRENT ( A).. TA = + 85 C. 10. + 25 C. TA = + 85 C - 40 C. + 25 C 0. - 40 C. 0 10 100. V(BR), REVERSE Voltage (V) IR, REVERSE CURRENT (mA). Figure 2. Reverse Characteristics Figure 3. Reverse Characteristics V(BR)R, REVERSE Voltage (V). IR = 100 mA. VF, FORWARD Voltage (V). TA = - 40 C. + 25 C. + 85 C. 0 10 100 -50 -25 0 25 50 75 100 125. IF , FORWARD CURRENT (mA) TA , AMBIENT TEMPERATURE ( C). Figure 4. Forward Characteristics Figure 5. Temperature Drift 875 750 Input 100 k OUTPUT (V). Hz). 625 Output e n , NOISE (nV/. DUT. 500. 375 0. 250.

8 INPUT (V). 10. 125. 0 0. 10 100 K 10 K 100 k 0 f, FREQUENCY (Hz) t, TIME (ms). Figure 6. Noise Voltage Figure 7. Response Time 4. LM285, LM385B . TYPICAL PERFORMANCE CURVES FOR V(BR)R, REVERSE Voltage CHANGE (mV). 100. 10. IR, REVERSE CURRENT ( A).. TA = + 85 C. 10. TA = + 85 C + 25 C - 40 C. + 25 C - 40 C. 0. 0 10 100. V(BR), REVERSE Voltage (V) IR, REVERSE CURRENT (mA). Figure 8. Reverse Characteristics Figure 9. Reverse Characteristics V(BR)R, REVERSE Voltage (V). IR = 100 mA. VF, FORWARD Voltage (V). TA = - 40 C + 85 C. + 25 C. 0 10 100 -50 -25 0 25 50 75 100 125. IF , FORWARD CURRENT (mA) TA , AMBIENT TEMPERATURE ( C). Figure 10. Forward Characteristics Figure 11. Temperature Drift 1500 Input 100 k OUTPUT (V). Hz). 1250 Output e n , NOISE (nV/.

9 DUT. 1000. 750 0. 500. INPUT (V). 10. 250. 0 0. 10 100 K 10 K 100 k 0 f, FREQUENCY (Hz) t, TIME (ms). Figure 12. Noise Voltage Figure 13. Response Time 5. LM285, LM385B . ORDERING INFORMATION. Reverse Break-Down Device Operating Temperature Range Voltage Package Shipping . SOIC-8 98 Units / Rail SOIC-8 98 Units / Rail (Pb-Free). V. SOIC-8 2500 / Tape & Reel SOIC-8 2500 / Tape & Reel (Pb-Free). SOIC-8 98 Units / Rail SOIC-8 98 Units / Rail (Pb-Free). V. SOIC-8 2500 / Tape & Reel SOIC-8 2500 / Tape & Reel (Pb-Free). TO-92 2000 Units / Bag TA = -40 C to +85 C V TO-92 2000 Units / Bag (Pb-Free). TO-92 2000 Units / Bag V TO-92 2000 Units / Bag (Pb-Free). TO-92 2000 / Tape & Reel V TO-92 2000 / Tape & Reel (Pb-Free). TO-92 2000 / Tape & Reel TO-92 2000 / Tape & Reel (Pb-Free).

10 V. TO-92 2000 Units / Fan-Fold TO-92 2000 Units / Fan-Fold (Pb-Free). SOIC-8 98 Units / Rail SOIC-8 98 Units / Rail (Pb-Free). V. SOIC-8 2500 / Tape & Reel SOIC-8 2500 / Tape & Reel (Pb-Free). SOIC-8 98 Units / Rail SOIC-8 98 Units / Rail (Pb-Free). TA = 0 C to +70 C V. SOIC-8 2500 / Tape & Reel SOIC-8 2500 / Tape & Reel (Pb-Free). TO-92 2000 Units / Bag TO-92 2000 Units / Bag (Pb-Free). V. TO-92 2000 / Tape & Reel TO-92 2000 / Tape & Reel (Pb-Free). For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. 6. LM285, LM385B . ORDERING INFORMATION. Reverse Break-Down Device Operating Temperature Range Voltage Package Shipping.