FAN431_11 FAIRCHILD | Alldatasheet

Document overview

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Technical content

Features

  • Programmable Output V oltage to 36 V olts
  • Low Dynamic Output Impedance 0.2 Ω Typical
  • Sink Current Capability of 1.0 to 100mA
  • Equivalent Full-Range Te mperature Coefficient of 50ppm/°C Typical
  • Temperature Compensated for Operation Over Full Rated Operating Temperature Range
  • Low Output Noise V oltage
  • Fast Turn-on Response

Description

The FAN431/FAN431A/FAN431L are three terminal output adjustable regulators with thermal stability over operating temperature range. The output voltage can be set any value between V REF (approximately 2.5 volts) and 36 volts with two external resistors. These devices have a typical dynamic output impedance of 0.2 Ω. Active output circuit provides a sharp turn-o n characteristic, making these devices excellent replacement for Zener Diodes in many applications. 1. Ref 2. Anode 3. Cathode TO-92 Internal Block Diagram

2.5 Vref

ANODE(A) REFERENCE (R) CATHODE (K) FAN431/FAN431A/FAN431L Programmable Shunt Regulator

(Operating temperature range applies unless otherwise specified.) Note: 1. Thermal resistance test board Size: 76.2mm * 114.3mm * 1.6mm (1S0P) JEDEC Standard: JESD51-3, JESD51-7 2. Assume no ambient airflow. 3. TJMAX = 150°C, Ratings apply to ambient temperature at 25°C 4. Power dissipation calculation: PD = (TJ - TA)/RθJA Recommended Operating Conditions Parameter Symbol Value Unit Cathode Voltage V KA 37 V Cathode current Range (Continuous) I KA -100 ~ +150 mA Reference Input Current Range I REF -0.05 ~ +10 mA Thermal Resistance Junction-Air (Note1,2) Z Suffix Package RθJA 132 °C/W Power Dissipation (Note3,4) Z Suffix Package PD 940 mW Junction Temperature T J 150 °C Operating Temperature Range T OPR -25 ~ +85 °C Storage Temperature Range T STG -65 ~ +150 °C Parameter Symbol Min. Typ. Max. Unit Cathode Voltage V KA VREF -3 6 V Cathode Current I KA 1.0 - 100 mA

Electrical Characteristics

(TA = +25°C, unless otherwise specified) Note1 TMIN = -25°C, TMAX = +85°C Parameter Symbol Conditions FAN431 FAN431A FAN431L Unit Reference Deviation of Reference Input Voltage Over- Temperature ΔV REF/ ΔT VKA=VREF, IKA=10mA TMIN≤TA≤TMAX - 4.5 17 - 4.5 17 - 4.5 17 mV Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage ΔV REF/ ΔVKA IKA =10mA ΔVKA=10V- mV/V ΔVKA=36V- Reference Input Current IREF IKA=10mA, Deviation of Reference Input Current Over Full Temperature Range ΔI REF/ΔT IKA=10mA, R1=10kΩ,R2=∞ TA =Full Range Minimum Cathode Current for Regulation I Off -Stage Cathode Current Dynamic Impedance ZKA VKA=VREF,

0.46 ±0.10 1.27TYP (R2.29) 3.86MAX [1.27 ±0.20] 1.27TYP [1.27 ±0.20] 3.60 ±0.20 14.47 ±0.40 1.02 ±0.10 (0.25) 4.58 ±0.20 4.58 +0.25 –0.15 0.38 +0.10 –0.05 0.38 +0.10 –0.05

Mechanical Dimensions (Continued) Package Dimensions in millimeters TO-92 Ammo Type & Tape And Reel Type

2/22/11 0.0m 001 Stock#DSxxxxxxxx © 2011 Fairchild Semiconductor Corporation LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in an y component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

Ordering Information

  • For information on tape & reel and ammo pack specificat ions, including part orientation and tape sizes, please refer to our tape and reel data, www.fairchildsemi.com/products/discrete/pdf/to92_tr.pdf. Product Number Output Voltage Tolerance Package Operating Temperature Shipping FAN431ZXA 2% TO-92 -25 ~ +85 °CA m m o P a c kFAN431AZXA 1% FAN431LZXA 0.5%