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TLVH431BQDBVR Datasheet(PDF) 1 Page - Texas Instruments |
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TLVH431BQDBVR Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 50 page  VREF Input V I O K Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TLVH431, TLVH431A, TLVH431B TLVH432, TLVH432A, TLVH432B SLVS555J – NOVEMBER 2004 – REVISED JANUARY 2015 TLVH43xx Low-Voltage Adjustable Precision Shunt Regulators 1 Features 3 Description The TLVH431 and TLVH432 devices are low-voltage 1 • Low-Voltage Operation: Down to 1.24 V 3-terminal adjustable voltage references, with • Reference Voltage Tolerances at 25°C specified thermal stability over applicable industrial – 0.5% for B Grade and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24 V) and – 1% for A Grade 18 V with two external resistors (see Figure 19). – 1.5% for Standard Grade These devices operate from a lower voltage (1.24 V) • Adjustable Output Voltage, VO = VREF to 18 V than the widely used TL431 and TL1431 shunt- regulator references. • Wide Operating Cathode Current Range: 100 μA to 70 mA When used with an optocoupler, the TLVH431 and • 0.25- Ω Typical Output Impedance TLVH432 devices are ideal voltage references in isolated feedback circuits for 3-V to 3.3-V switching- • –40°C to 125°C Specifications mode power supplies. They have a typical output • TLVH432 Provides Alternative Pinouts for impedance of 0.25 Ω. Active output circuitry provides SOT-23-3 and SOT-89 Packages a very sharp turn-on characteristic, making the • Ultra-Small SC-70 Package Offers 40% TLVH431 and TLVH432 devices excellent Smaller Footprint than SOT-23-3 replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies. 2 Applications The TLVH432 device is identical to the TLVH431 • Adjustable Voltage and Current Referencing device, but is offered with different pinouts for the • Secondary Side Regulation in Flyback SMPSs SOT-23-3 and SOT-89 packages. • Zener Replacement • Voltage Monitoring Device Information(1) PART NUMBER PACKAGE (PIN) BODY SIZE (NOM) • Comparator with Integrated Reference SOT-23 (5) 2.90 mm × 1.60 mm SOT-23 (3) 2.92 mm × 1.30 mm TLVH43xx SC70 (6) 2.00 mm × 1.25 mm TO-92 (3) 4.30 mm × 4.30 mm SOT-89 (3) 4.50 mm × 2.50 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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