PROGRAMMABLE PRECISION SHUNT REGULATOR FEATURES TJ431/A/C TO-92 PKG Programmable Output Voltage to 28V Guaranteed 0.5% Reference Voltage Tolerance Cathode Current Range(Continuous) 100 mA Temperature Compensated For Operation Over Full Rate Operating Temperature Range Low Output Noise Voltage Fast Turn-on Response TO-92, SOT-89 or SOT-23 3L Package 3 T O P 2 1 SOT-23 PKG APPLICATION 2 Shunt Regulator Precision High-Current Series Regulator High-Current Shunt Regulator Crowbar Circuit PWM Converter With Reference Voltage Monitor Precision Current Limiter TOP 1 3 SOT-89 PKG DESCRIPSION The TJ431 is a three-terminal adjustable shunt regulator with specified thermal stability over applicable temperature VREF (Approx. 2.5V) and 28V with two external resistors. This device has a typical dynamic output impedance of 0.25Ω. Active output circuitry provides a very sharp turn-on characteristic, making this device excellent replacement for zener diodes in many applications. The TJ431 is characterized for operation from -40℃ to +125℃. TOP 1 PIN 1. Reference 2 2. Anode 3 3. Cathode ORDERING INFORMATION Device Package TJ431 TO-92(Bulk) TJ431TA TO-92(Taping) TJ431SF SOT-23 3L TJ431F SOT-89 3L * Refer to the page 2 for detailed ordering Information, Absolute Maximum Ratings (Operating temperature range applies unless otherwise specified) CHARACTERISTIC SYMBOL MIN. MAX. UNIT VKA - 37 V IK -100 150 mA IREF -0.05 10 mA TJ -40 150 ℃ Operating Temperature Range TOPR -40 125 ℃ Storage Temperature Range TSTG -65 150 ℃ Cathode Voltage Cathode Current Range(Continuous) Reference Input Current Range Junction Temperature Range July 2014 – R1.1 -1- HTC PROGRAMMABLE PRECISION SHUNT REGULATOR TJ431/A/C RECOMMENDED OPERATING CONDITIONS CHARACTERISTIC SYMBOL MIN. MAX. UNIT Cathode Voltage VKA VREF 28 V Cathode Current IK 1.0 100 mA Ordering Information VREF Package Tolerance Order No. Package Marking Supplied As TJ431C - TJ431GC - TJ431CTA - TJ431GCTA - TJ431A - TJ431GA - TJ431ATA - TJ431GATA - TJ431 - TJ431G - TJ431TA - TJ431GTA - TJ431CSF - TJ431GCSF - TJ431ASF - TJ431GASF - TJ431SF - TJ431GSF - 0.5% TJ431CF - Reel 1% TJ431AF - Reel 2% TJ431F - Reel Bulk 0.5% Tape Bulk TO-92 1% Tape Bulk 2% 2.495V Tape 0.5% SOT-23 Reel 1% Reel 2% SOT-89 July 2014 – R1.1 Reel -2- HTC PROGRAMMABLE PRECISION SHUNT REGULATOR TJ431/A/C Ordering Information (continued) TJ 431 Package Type Tolerance Green Mode TA : TO-92 SF : SOT-23 F : SOT-89 C : 0.5% A : 1% Blank : 2% G : Halogen Free H : Halogen Free Blank : Pb Free Root Name Product Code July 2014 – R1.1 -3- HTC PROGRAMMABLE PRECISION SHUNT REGULATOR TJ431/A/C PIN CONFIGURATION 2 Marking Side TOP 1 1 2 TOP 3 1 2 3 3 TO-92 PKG SOT-23 PKG SOT-89 PKG PIN DESCRIPTION TO-92 / SOT-23 / SOT-89 Pin No. Name Function 1 Reference Reference Voltage 2 Anode Ground 3 Cathode Input Supply Voltage TJ431 ELECTRICAL CHARACTERISTICS (TA=25℃, unless otherwise specified) CHARACTERISTIC Reference Input Voltage Deviation of Reference Input Voltage Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage Reference Input Current Deviation of Reference Input Current SYMBOL VREF ΔVREF/ΔT ΔVREF/ΔVKA TEST CONDITION VKA =VREF, IK =10mA MIN. TYP. MAX. TJ431C 2.483 2.495 2.507 TJ431A 2.470 2.495 2.520 TJ431 2.440 2.495 2.550 VKA = VREF, IK =10mA TA =Full Range -2.7 -1.0 ΔVKA=28V to 10V -2 -0.4 V mV 24 ΔVKA=10V to VREF UNIT mV/V IK =10mA IREF IKA=10mA, R1=10㏀, R2=∞ 0.5 1.2 uA ΔIREF/ΔT IK =10mA, R1=10㏀, R2=∞ TA =Full Range 0.4 1.2 uA Minimum Cathode Current for Regulation IK(MIN) VKA= VREF 0.4 1.0 mA Off-State Cathode Current IK(OFF) VKA=28V, VREF=0 0.1 1.0 uA VKA= VREF, IK =1mA~100mA f ≤ 1kHz 0.25 0.50 Ω Dynamic Impedance July 2014 – R1.1 ZKA -4- HTC PROGRAMMABLE PRECISION SHUNT REGULATOR TJ431/A/C TEST CIRCUITS < Fig 2. Test circuit for VKA ≥ VREF > < Fig 1. Test circuit for VKA = VREF > < Fig 3. Test circuit for IKA(OFF) > July 2014 – R1.1 -5- HTC