TLV431A-Q1 Datasheet | Texas Instruments

ures - 1 Qualified for Automotive Applications - AEC-Q100 Qualified With the Following Results: - Device Temperature Grade 1: -40°C to 125°C Ambient Operating Temperature Range - Low-Voltage Operation, VREF = 1.24 V - Adjustable Output Voltage, VO = VREF to 6 V - Reference Voltage Tolerances at 25°C - 0.5% for TLV431B - 1% for TLV431A - Typical Temperature Drift - 11 m V (- 40°C to 125°C) - Low Operational Cathode Current, 80 µA Typ - 0.25-Ω Typical Output Impedance - See TLVH431 and TLVH432 for: - Wider VKA (1.24 V to 18 V) and IK (80 m A) - Multiple Pinouts for SOT-23-3 and SOT-89 Packages 2 Applications - Adjustable Voltage and Current Referencing - Secondary Side Regulation in Flyback SMPSs - Zener Replacement - Voltage Monitoring - parator with Integrated Reference 3 Description The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and mercial temperature ranges. Output voltage can be set to 1.24V on stand alone mode or any value between VREF (1.24 V) and 6 V with two external resistors (see Figure 23). These devices operate from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references. When used with an optocoupler, the TLV431 device is an ideal voltage reference in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. These devices have a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turn-on characteristic, making them excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies. Device Information(1) PART NUMBER PACKAGE (PIN) BODY SIZE (NOM) TLV431x-Q1 SOT-23 (3) SOT-23...