TLVH432A是TI公司的一款并联电压基准产品,TLVH432A是低电压可调节精度并联稳压器,本页介绍了TLVH432A的产品说明、应用、特性等,并给出了与TLVH432A相关的TI元器件型号供参考。
TLVH432A - 低电压可调节精度并联稳压器 - 并联电压基准 - 电压基准 - TI公司(Texas Instruments,德州仪器)
- 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
- Adjustable Voltage and Current Referencing
- Secondary Side Regulation in Flyback SMPSs
- Zener Replacement
- Voltage Monitoring
- Comparator with Integrated Reference
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.
PART NUMBER | PACKAGE (PIN) | BODY SIZE (NOM) |
---|---|---|
TLVH43xx | SOT-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 |