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TLV431A - 产品图解：
TLV431A-低电压可调节精密并联稳压器
TLV431A-并联电压基准-电压基准-电源管理
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TI产品 - TLV431A介绍

TLV431A - 低电压可调节精密并联稳压器

TLV431A是TI德州仪器公司的一款并联电压基准产品，TLV431A是低电压可调节精密并联稳压器，本站介绍了TLV431A的封装应用图解、特点和优点、功能等，并给出了与TLV431A相关的TI元器件型号供参考。

TLV431A - 低电压可调节精密并联稳压器 - 并联电压基准 - 电压基准 - 德州仪器

产品特性
  • 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
    • 1.5% for TLV431
  • Typical Temperature Drift
    • 4 mV (0°C to 70°C)
    • 6 mV (–40°C to 85°C)
    • 11 mV (–40°C to 125°C)
  • Low Operational Cathode Current, 80 µA Typ
  • 0.25-Ω Typical Output Impedance
  • Ultra-Small SC-70 Package Offers 40% Smaller Footprint Than SOT-23-3
  • See TLVH431 and TLVH432 for:
    • Wider VKA (1.24 V to 18 V) and IK (80 mA)
    • Additional SOT-89 Package
    • Multiple Pinouts for SOT-23-3 and SOT-89 Packages
  • On Products Compliant to MIL-PRF-38535, All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Processing Does Not Necessarily Include Testing of All Parameters.
产品应用
  • Adjustable Voltage and Current Referencing
  • Secondary Side Regulation in Flyback SMPSs
  • Zener Replacement
  • Voltage Monitoring
  • Comparator with Integrated Reference
产品说明

The TLV431 device is a low-voltage 3-terminal adjustable voltage reference with specified thermal stability over applicable industrial and commercial temperature ranges. Output voltage can be set to any value between VREF (1.24 V) and 6 V with two external resistors (see Figure 20). 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.

产品器件信息
PART NUMBERPACKAGE (PIN)BODY SIZE (NOM)
TLV431xSOT-23 (3)2.90 mm x 1.30 mm
SOT-23 (5)2.90 mm x 1.60 mm
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
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