TS431ACX RFG

TS431 Taiwan Semiconductor 2.495V Programmable Shunt Voltage Reference GENERAL DESCRIPTION FEATURES TS431 series integrated circuits are three-terminal ● Precision Reference Voltage programmable shunt regulator diodes. These monolithic TS431A – 2.495V ±1% IC voltage references operate as a low temperature coefficient zener which is programmable from VREF to 36 TS431B – 2.495V ±0.5% ● Equivalent Full Range Temp. Coefficient: volts with two external resistors. These devices exhibit a 50ppm/°C wide operating current range of 0.3 to 100mA with a ● Programmable Output Voltage up to 36V typical dynamic ● Fast Turn-On Response impedance of 0.22. The characteristics of these references make them ● Sink Current Capability of 1~100mA excellent replacements for zener diodes in many ● Low Dynamic Output Impedance: 0.2Ω applications such as digital voltmeters, power supplies, ● Low Output Noise ● RoHS Compliant ● Halogen-free according to IEC 61249-2-21 and op amp circuitry. The 2.495V reference makes it convenient to obtain a stable reference from 5.0V logic supplies, and since The TS431 series operates as a APPLICATION shunt regulator, it can be used as either a positive or ● SMPS negative stage reference. ● Lighting ● Telecommunication ● Home appliance SOT-23 Pin Definition: 1. Reference 2. Cathode 3. Anode SOP-8 Pin Definition 1. Cathode 2. Anode 3. Anode 4. N/C 5. N/C 6. Anode 7. Anode 8. Reference Notes: MSL 3 (Moisture Sensitivity Level) per J-STD-020 TYPICAL APPLICATIN CIRCUIT 1 Version: I2104 TS431 Taiwan Semiconductor ABSOLUTE MAXIMUM RATINGS PARAMETER Cathode Voltage (Note) Continuous Cathode Current Range Reference Input Current Range SOT-23 Power Dissipation SYMBOL LIMIT UNIT VKA 37 V IK -100 ~ +150 mA IREF -0.05 ~ +10 mA 0.30 PD SOP-8 Junction Temperature W 0.50 TJ +150 °C Operating Temperature Range TOPER -40 ~ +85 °C Storage Temperature Range TSTG -65 ~ +150 °C PARAMETER SYMBOL LIMIT UNIT Cathode Voltage VKA VREF ~ 36 V IK 1 ~ 100 mA RECOMMEND OPERATING CONDITION Continuous Cathode Current Range ELECTRICAL CHARACTERISTICS PARAMETER Reference voltage Deviation of reference input voltage Radio of change in Vref to change in cathode Voltage Reference Input current Deviation of reference input current, over temp. Off-state Cathode Current Minimum operating cathode current Dynamic Output Impedance CONDITIONS SYMBOL TS431A VREF TS431B MIN 2.470 2.483 TYP 2.495 MAX 2.520 2.507 UNIT V VKA = VREF, IK =10mA TA= full range ∆VREF -- 8 17 IKA =10mA, ∆VKA = 10V to VREF ∆VKA = 36V to 10V ∆VREF /∆VKA -- -1.4 -2.7 -- -1 -2 R1=10kΩ, R2=  , IREF -- 0.7 4 µA R1=10kΩ, R2=  , IKA =10mA TA= full range ∆IREF -- 0.4 1.2 µA VREF =0V IKA (off) -- -- 1 µA VKA = VREF IKA(min) -- 0.4 0.6 mA f