LM336B

LM236 LM336,B 2.5V VOLTAGE REFERENCES s LOW TEMPERATURE COEFFICIENT s WIDE OPERATING CURRENT OF 400µA TO 10mA s 0.2Ω DYNAMIC IMPEDANCE s GUARANTEED TEMPERATURE STABILITY s FAST TURN-ON Z TO92 (Plastic Package) D SO8 (Plastic Micropackage) DESCRIPTION The LM236 and LM336 are precision 2.5V regulator diodes. These voltage reference monolithic ICs operate like 2.5V zener diodes with a low temperature coefficient and a dynamic impedance of 0.2Ω. A third pin enables adjusting the reference voltage and the temperature coefficient. PIN CONNECTIONS (top view) TO92 (Top view) ORDER CODE Part Number LM236 LM336,B Temperature Range -25°C, +85°C 0°C, +70°C Package Z • • D • • Z = T O92 Plastic package - also available in Bulk (Z), Tape & Reel (ZT) and Ammo Pack (AP) D = Small Outline Package (SO) - also available in Tape & Reel (DT) SO8 (Top view) V+ NC NC ADJ ADJ v+ v- 8 7 6 5 12345678- NC NC NC VADJ NC NC V+ 1 NC 2 NC 3 NC 4 V+ May 2003 1/10 LM236 - LM336,B SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol IR IF Toper TStg Current Reverse Forward Operating Free-air Temperature Range Storage Temperature Range -25 to +85 -65 to +150 Parameter LM236 15 10 0 to +70 LM336,B Unit mA °C °C ELECTRICAL CHARACTERISTICS LM236 Symbol Parameter Min. Reference Breakdown Voltage Tamb = +25°C, IR = 1mA LM236, LM336 LM336B Reverse Breakdown Voltage Change with Current 400µA ≤ IR ≤ 10mA Tamb = +25°C Tmin. ≤ Tamb ≤ Tmax. Reverse Dynamic Impedance (IR = 1mA) Tamb = +25°C Tmin. ≤ Tamb ≤ Tmax. Temperature Stability (VR = 2.49V, IR = 1mA) Long Term Stability (Tamb = +25°C ±0.1°C, IR= 1mA) Typ. Max. Min. Typ. Max. LM336,B Unit VR 2.44 2.49 2.54 2.39 2.44 2.49 2.49 2.59 2.54 V ∆VR 2.6 3 0.2 0.4 3.5 20 6 10 0.6 1 9 2.6 3 0.2 0.4 1.8 20 10 12 1 1.4 6 mV ZD KVT KVH Ω mV ppm 2/10 LM236 - LM336,B 3/10 LM236 - LM336,B APPLICATION HINTS The LM236, LM336 voltage references are easier to use than zener diodes. Their low impedance and wide current range facilitate biasing in any circuits. Besides, the breakdown voltage or the temperature coefficient can be adjusted so as to optimize the performance of the circuit. Figure 1 represents a LM336 with a 10kΩ potentiometer to adjust the reverse breakdown voltage which can be adjusted without altering the temperature coefficient of the circuit. The adjustment range is generally sufficient to adjust the initial tolerance of the circuit and the inaccuracy of the amplifier circuit. To obtain a lower temperature coefficient two diodes can be connected in series as indicated in Figure 2. When the circuit is adjusted to 2.49V the temperature coefficient is minimized. For a correct temperature coefficient, the diodes should be at the same ambient temperature as the LM336. The value of R1 is not critical (2-20kΩ). 4/10 LM236 - LM336,B 5/10 LM236 - LM336,B 6/10 LM236 - LM336,B 7/10 LM236 - LM336,B PACKAGE MECHANICAL DATA SO-8 MECHANICAL DATA DIM. A A1 A2 B C D E e H h L k ddd 0.1 5.80 0.25 0.40 mm. MIN. 1.35 0.10 1.10 0.33 0.19 4.80 3.80 1.27 6.20 0.50 1.27 8˚ (max.) 0.04 0.228 0.010 0.016 TYP MAX. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 MIN. 0.053 0.04 0.043 0.013 0.007 0.189 0.150 0.050 0.244 0.020 0.050 inch TYP. MAX. 0.069 0.010 0.065 0.020 0.010 0.197 0.157 0016023/C 8/10 LM236 - LM336,B PACKAGE MECHANICAL DATA - TO92 TAPE AMMO PACK & TO92 TAPE & REEL TO-92 MECHANICAL DATA mm. TYP inches TYP. DIM. AL A T d I1 P PO P2 F1/F2 Dh DP W W0 W1 W2 H H0 H1 DO L1 MIN. MAX. 5.0 5.0 4.0 MIN. MAX. 0.197 0.197 0.157 0.45 2.5 11.7 12.4 5.95 2.4 -1 -1 17.5 5.7 8.5 12.7 12.7 6.35 2.5 0 0 18.0 6 9 13.7 13 6.75 2.8 1 1 19.0 6.3 9.75 0.5 20 16.5 25 4.2 11 0.098 0.461 0.488 0.234 0.094 -0.039 -0.039 0.689 0.224 0.335 0.018 0.500 0.500 0.250 0.098 0 0 0.709 0.236 0.354 0.539 0.512 0.266 0.110 0.039 0.039 0.748 0.248 0.384 0.020 0.787 0.650 0.984 0.165 0.433 15.5 3.8 16 4.0 0.610 0.150 0.630 0.157 Packing information are available at: http://www.st.com/stonline/prodpres/packages/stdlin.htm 9/10 LM236 - LM336,B PACKAGE MECHANICAL DATA - TO92 BULK TO-92 MECHANICA DATA mm. DIM. MIN. A b D E e e1 L R S1 W 4.32 0.36 4.45 3.30 2.41 1.14 12.7 2.16 0.92 0.41 TYP MAX. 4.95 0.51 4.95 3.94 2.67 1.40 15.49 2.41 1.52 0.56 MIN. 170.1 14.2 175.2 129.9 94.9 44.9 500.0 85.0 36.2 16.1 TYP. MAX. 194.9 20.1 194.9 155.1 105.1 55.1 609.8 94.9 59.8 22.0 mils 0102782/C Packing information are available at: http://www.st.com/stonline/prodpres/packages/stdlin.htm Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. 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