2024/6/12 10:02:18
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1 Features
• 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
2 Applications
• Adjustable voltage reference for data Converters
• Secondary side regulation in flyback SMPSs
• Zener replacement with low leakage current
• Voltage monitoring for power rails
• Comparator with integrated reference
3 Description
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 shuntregulator 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 switchingmode 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 3-pin SOT-23 and SOT-89 packages.
热门型号
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20万现货SKU
品类不断扩充
科技智能大仓储
4小时快速交货
仅从原厂和代理商进货
每一颗料均可原厂追溯
明码标价节省时间成本
一站式采购正品元器件
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