TL431

Part: TL431A-MS — MSKSEMI Semiconductor

Type: Adjustable Shunt Regulator

Description: Three-terminal adjustable shunt regulator with Vref trimming to ±0.3% (on-wafer) and ±0.5% (packaged), adjustable output voltage from Vref (approx. 2.5V) to 36V, and sink current capability of 0.1mA to 100mA.

Operating Conditions:

• Supply voltage: Vref–36 V
• Operating temperature: -25 to 85 °C
• Cathode current: 0.3–100 mA

Absolute Maximum Ratings:

• Max cathode voltage: 40 V
• Max continuous cathode current: 150 mA
• Max lead temperature: 260 °C (1.6mm aside from the case, 10 seconds)

Key Specs:

• Reference voltage (Vref): 2.475 V to 2.525 V (Typ 2.5 V) at VKA = Vref, IK = 10mA
• Reference voltage accuracy: ±0.5% (packaged dice)
• Dynamic output impedance: 0.1 Ω (Typ) at VKA = Vref, IK = 0.2mA to 100mA, f<1kHz
• Minimum cathode current for regulation: 0.08 mA (Typ) to 0.5 mA (Max) at VKA = Vref
• Off-state cathode current: 0.01 μA (Typ) to 0.9 μA (Max) at VKA = 36V, Vref = 0
• REF input current: 0.5 μA (Typ) to 1.2 μA (Max) at IK = 10mA
• Turn-on response time (Ton): 1.8 μs

Features:

• On-wafer Vref trimming ± 0.3%
• Low Dynamic output impedance 0.1Ω (Typ)
• Adjustable output voltage
• Fast turn-on response
• Sink current capability of 0.1mA to 100mA
• Low output noise
• Industrial temperature range
• Improved temperature compensation
• Excellent temperature coefficient 25ppm/°C
• Electrostatic discharge voltage 1.6kV

Package:

• SOT-23

(Over operating free-air temperature range, unless otherwise noted)

Note 1: The voltage values are with respect to the anode terminal unless otherwise noted.

• Low output noise
• Industrial temperature range
• Improved temperature compensation
• Excellent temperature coefficient 25ppm/°C
• Electrostatic discharge voltage 1.6kV