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TLV431ACDBVRG4 Datasheet(PDF) 1 Page - Texas Instruments |
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TLV431ACDBVRG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 46 page VREF Input V I O K Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TLV431, TLV431A, TLV431B SLVS139V – JULY 1996 – REVISED JANUARY 2015 TLV431x Low-Voltage Adjustable Precision Shunt Regulator 1 Features 2 Applications 1 • Low-Voltage Operation, VREF = 1.24 V • Adjustable Voltage and Current Referencing • Adjustable Output Voltage, VO = VREF to 6 V • Secondary Side Regulation in Flyback SMPSs • Reference Voltage Tolerances at 25°C • Zener Replacement • Voltage Monitoring – 0.5% for TLV431B • Comparator with Integrated Reference – 1% for TLV431A – 1.5% for TLV431 3 Description • Typical Temperature Drift The TLV431 device is a low-voltage 3-terminal – 4 mV (0°C to 70°C) adjustable voltage reference with specified thermal – 6 mV (–40°C to 85°C) stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any – 11 mV (–40°C to 125°C) value between VREF (1.24 V) and 6 V with two • Low Operational Cathode Current, 80 µA Typ external resistors (see Figure 20). These devices • 0.25- Ω Typical Output Impedance operate from a lower voltage (1.24 V) than the widely used TL431 and TL1431 shunt-regulator references. • Ultra-Small SC-70 Package Offers 40% Smaller Footprint Than SOT-23-3 When used with an optocoupler, the TLV431 device • See TLVH431 and TLVH432 for: is an ideal voltage reference in isolated feedback circuits for 3-V to 3.3-V switching-mode power – Wider VKA (1.24 V to 18 V) and IK (80 mA) supplies. These devices have a typical output – Additional SOT-89 Package impedance of 0.25 Ω. Active output circuitry provides – Multiple Pinouts for SOT-23-3 and SOT-89 a very sharp turn-on characteristic, making them Packages excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation • On Products Compliant to MIL-PRF-38535, and adjustable power supplies. All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Device Information(1) Processing Does Not Necessarily Include Testing PART NUMBER PACKAGE (PIN) BODY SIZE (NOM) of All Parameters. SOT-23 (3) 2.90 mm x 1.30 mm SOT-23 (5) 2.90 mm x 1.60 mm TLV431x SC70 (6) 2.00 mm x 1.25 mm TO-92 (3) 4.30 mm × 4.30 mm SOIC (8) 4.90 mm x 3.90 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 4 Simplified Schematic 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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