TAIWAN SEMICONDUCTOR 2.495V Programmable Shunt Voltage Reference DESCRIPTION TS431 integrated circuits are three-terminal programmable shunt regulator diodes. These monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from VREF to 36V with two external resistors. These devices exhibit a wide operating current range to 250mA with a typical dynamic impedance of 0.2Q. The characteristics of these references make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies, 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 operates as a shunt regulator, it can be used as either a positive or negative stage reference. FEATURES • Programmable Output Voltage up to 36V • TS431A - Vref 2.495V ±1 % tolerance • Fast Turn-On Response • Sink Current Capability: 120mA • Low Dynamic Output Impedance: 0.2Q (Typ.) • Min. Operating Cathode Current: 0.2mA (Typ.) • Compliant to RoHS Directive 2011/65/EU and in accordance to WEEE 2002/96/EC • Halogen-free according to IEC 61249-2-21 APPLICATION • SMPS • Lighting • Telecommunication • Home appliance RoHS h£logen COMPLIANT FREE Notes: MSL 3 (Moisture Sensitivity Level) per J-STD-020 SIMPLIFIED SCHEMATIC

TAIWAN SEMICONDUCTOR TS431xRIX-Z Taiwan Semiconductor ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise noted) THERMAL PERFORMANCE Note: Consider measured with the PCB copper area of approximately 1 in2 (Multi-Layer) ELECTRICAL SPECIFICATIONS (TA=+25oC, unless otherwise specified) Note: The deviation parameters AVref and AIref are defined as difference between the maximum value and minimum value obtained over the full operating ambient temperature range that applied. ORDERING INFORMATION PART NO.

TAIWAN SEMICONDUCTOR TS431xRIX-ZTaiwan SemiconductorCHARACTERISTICS CURVES (TC = 25°C unless otherwise noted) Figure 1. VREF vs. Ambient Temperature 120 100 ^ 80 < 60 40 20 0 0 £ -20 -40 -60 -80 -100 Ta - Free-Air Temperature(°C) Figure 5. Off-State Cathode current vs. Ambient Temperature Ta - Free-Air Temperature(°C) Figure 6. Ration of delta reference voltage to delta cathode voltage vs. Ambient Temperature Version: B1608

TAIWAN SEMICONDUCTOR TS431xRIX-Z Taiwan Semiconductor TYPICAL PERFORMANCE CHARACTERISTICS Small-Signal Voltage Gain and Phase Shift vs. Frequency Reference Impedance vs. Frequency Pulse Response Test Circuit For Pulse Response^

TS431xRIX-Z Taiwan Semiconductor TYPICAL PERFORMANCE CHARACTERISTICS Stability Boundary Condition

TAIWAN SEMICONDUCTOR TS431xRIX-ZTaiwan Semiconductor PACKAGE OUTLINE DIMENSIONS (Unit: Millimeters) SUGGESTED PAD LAYOUT (Unit: Millimeters) MARKING DIAGRAM xR = Device code A = TS431A B = TS431B Y = Year Code M = Month Code for Halogen Free Product O =Jan P =Feb Q =Mar R =Apr

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