TL431 - 可调节精密并联稳压器

TL431是TI德州仪器公司的一款并联电压基准产品，TL431是可调节精密并联稳压器，本站介绍了TL431的封装应用图解、特点和优点、功能等，并给出了与TL431相关的TI元器件型号供参考。

TL431 - 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

Reference Voltage Tolerance at 25°C
- 0.5% (B Grade)
- 1% (A Grade)
- 2% (Standard Grade)
Adjustable Output Voltage: Vref to 36 V
Operation From −40°C to 125°C
Typical Temperature Drift (TL431B)
- 6 mV (C Temp)
- 14 mV (I Temp, Q Temp)
Low Output Noise
0.2-Ω Typical Output Impedance
Sink-Current Capability: 1 mA to 100 mA

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 TL431 and TL432 devices are three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors. These devices have a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. The TL432 device has exactly the same functionality and electrical specifications as the TL431 device, but has different pinouts for the DBV, DBZ, and PK packages.

Both the TL431 and TL432 devices are offered in three grades, with initial tolerances (at 25°C) of 0.5%, 1%, and 2%, for the B, A, and standard grade, respectively. In addition, low output drift versus temperature ensures good stability over the entire temperature range.

The TL43xxC devices are characterized for operation from 0°C to 70°C, the TL43xxI devices are characterized for operation from –40°C to 85°C, and the TL43xxQ devices are characterized for operation from –40°C to 125°C.

产品器件信息

PART NUMBER	PACKAGE (PIN)	BODY SIZE (NOM)
TL43xx	SOT-23-3 (3)	2.90 mm x 1.30 mm
	SOT-23-5 (5)	2.90 mm x 1.60 mm
	SOIC (8)	4.90 mm x 3.90 mm
	PDIP (8)	9.50 mm x 6.35 mm
	SOP (8)	6.20 mm x 5.30 mm

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