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TLVH431B - 产品图解：
TLVH431B-低电压可调节精密并联稳压器
TLVH431B-并联电压基准-电压基准-电源管理
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TI产品 - TLVH431B介绍

TLVH431B - 低电压可调节精密并联稳压器

TLVH431B是TI德州仪器公司的一款并联电压基准产品，TLVH431B是低电压可调节精密并联稳压器，本站介绍了TLVH431B的封装应用图解、特点和优点、功能等，并给出了与TLVH431B相关的TI元器件型号供参考。

TLVH431B - 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: Down to 1.24 V
  • Reference Voltage Tolerances at 25°C
    • 0.5% for B Grade
    • 1% for A Grade
    • 1.5% for Standard Grade
  • Adjustable Output Voltage, VO = VREF to 18 V
  • Wide Operating Cathode Current Range: 100 μA to 70 mA
  • 0.25-Ω Typical Output Impedance
  • –40°C to 125°C Specifications
  • TLVH432 Provides Alternative Pinouts for SOT-23-3 and SOT-89 Packages
  • Ultra-Small SC-70 Package Offers 40% Smaller Footprint than SOT-23-3
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 TLVH431 and TLVH432 devices are low-voltage 3-terminal adjustable voltage references, 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 18 V with two external resistors (see Figure 19). 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 TLVH431 and TLVH432 devices are ideal voltage references in isolated feedback circuits for 3-V to 3.3-V switching-mode power supplies. They have a typical output impedance of 0.25 Ω. Active output circuitry provides a very sharp turn-on characteristic, making the TLVH431 and TLVH432 devices excellent replacements for low-voltage Zener diodes in many applications, including on-board regulation and adjustable power supplies.

The TLVH432 device is identical to the TLVH431 device, but is offered with different pinouts for the SOT-23-3 and SOT-89 packages.

产品器件信息
PART NUMBERPACKAGE (PIN)BODY SIZE (NOM)
TLVH43xxSOT-23 (5)2.90 mm × 1.60 mm
SOT-23 (3)2.92 mm × 1.30 mm
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
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