Maker : STMicroelectronics
Part No. : LM336DT

  Datasheet PDF : LM336DT.pdf
  Cross Reference : LM336DT Cross Reference
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Shortcut : LM336D-2.5  LM336DT 

Product Information

LM236 LM336,B 2.5V VOLTAGE REFERENCES . . . . . LOW TEMPERATURE COEFFICIENT WIDE OPERATING CURRENT OF 400µA TO 10mA 0.2Ω DYNAMIC IMPEDANCE GUARANTEED TEMPERATURE STABILITY 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 TO92 (Bottom view) ADJ V+ V- ORDER CODES Part numTemperature Range ber LM236 LM336,B –25 C, +85 C 0 C, +70 C o o o o Package Z • • D • • SO8 (Top view) V+ 8 NC 7 NC 6 ADJ 5 1 NC 2 NC 3 NC 4 V October 1997 1/9 LM236 - LM336,B SCHEMATIC DIAGRAM V 50k Ω 24kΩ 24kΩ 6.6kΩ 3pF 10kΩ 6pF 600Ω 30kΩ ADJ 6.6kΩ 2k Ω 1.1kΩ V ABSOLUTE MAXIMUM RATINGS Symbol IR IF Toper Tstg Current Reverse Forward Operating Free-air Temperature Range Storage Temperature Range Parameter LM236 15 10 –25 to +85 –65 to +150 LM336,B 15 10 0 to +70 o o Unit mA C C ELECTRICAL CHARACTERISTICS LM236 -25oC ≤ Tamb ≤ +85oC LM336,B 0oC ≤ Tamb ≤ +70oC (unless otherwise specified) Symbol VR Parameter Reverse Breakdown Voltage o (Tamb = +25 C, IR = 1mA) LM236, LM336 LM336B ∆VR Reverse Breakdown Voltage Change with Current (400µA ≤ IR ≤ 10mA) o Tamb = +25 C Tmin. ≤ Tamb ≤ Tmax. Reverse Dynamic Impedance (I R = 1mA) Tamb = +25oC Tmin. ≤ Tamb ≤ Tmax. Temperature Stability (VR = 2.49V, IR = 1mA) Long Term Stability (Tamb = +25 C ±0.1 C, IR = 1mA) o o LM236 Min. Typ. Max. Min. LM336,B Typ. Max. Unit V 2.44 2.49 2.54 2.39 2.44 2.49 2.49 2.59 2.54 mV 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 Ω ZD KVT KVH mV ppm 2/9 LM236 - LM336,B 3/9 LM236 - LM336,B APPLICATION HINTS The LM236, LM336 voltage references are easierto 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 adjustedso as to optimize the performance of the circuit. Figure 1 represents a LM336 with a 10kΩ potentiometer to adjust the reverse breakdown voltage can be adjusted without altering the temperature coeffiFigure 1 : The LM336 with Pot for Adjustment of Breakdown Voltage cient 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 temperaturecoefficienttwo 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). Figure 2 : Temperature Coefficient Adjustment V RS V RS 1N4148 LM336 R1 10kΩ 1N4148 LM336 R1 10kΩ 4/9 LM236 - LM336,B TYPICAL APPLICATIONS Figure 3 : 2.5V Reference Figure 4 : Wide Input Range Reference Vi +3.5V to +40V +5V 2.5kΩ +2.5V LM336 LM334 68Ω VO = +2.5V LM336 Figure 5 : Precision Power Regulator with Low Temperature Coefficient LM317 Vi Input ADJ Output V O 1 .2 kΩ 1 N457 LM336 10 kΩ 1 N457 R1 375 Ω R2 2kΩ Output a djus t Figure 6 : Adjustable Shunt Regulator RS VO +5V to +40V 20kΩ 560Ω 2N2905 100kΩ 100pF +6V to +40V LM308A 20kΩ LM336 5/9 LM236 - LM336,B Figure 7 : Linear Ohmmeter V LM334 35Ω 2.5kΩ 1% 25 kΩ 1% 10kΩ/V 250 kΩ 1% 2.5 MΩ 1% 100kΩ/V 1MΩ/V LM336 10kΩ calibrate 1kΩ/V 100pF 2 1 8 6 LM308A 3 VO Rx Figure 8 : Bipolar Output Reference +5V 5kΩ 2kΩ +2V LM336 10kΩ 1% 1.25V 10kΩ 1% 5kΩ -5V 6/9 LM236 - LM336,B Figure 9 : 5V Buffered Reference Vi +7V to +36V 20kΩ 1% 5.1kΩ 2 7 LM308 3 4 8 6 5V 10kΩ CAL LM336 20kΩ 1% 100pF Figure 10 : Low Noise Buff...

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