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 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

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