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 NUMBER	PACKAGE (PIN)	BODY SIZE (NOM)
TLV431x	SOT-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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