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2022-09-24 23:16:53
WSL431-Adjustable Precision Shunt Regulator...
GENERAL DESCRIPTION The WSL431 is a 3-terminal, commercial thermally stable adjustable voltage reference applicable over the specified operating temperature range. The output voltage can be set to any voltage between Vref (2.505V) and 20V with two external resistor values (see Figure 2). When used with an optocoupler, the WSL431 is an ideal reference switch-mode power supply in isolated feedback circuits from 2.505V to 12V. The typical output impedance of this device is o.1Ω. The active output circuit provides a very sharp turn-on characteristic, making the WSL431 an excellent replacement for Zener diodes in many applications, including board regulation and adjustable power supplies.
Features • Accurate reference voltage 2.505V
• Guaranteed 0.5%, 1% and 2% reference voltage tolerance • Sink current capability from 1mA to 100mA
• Fast turn-on • Adjustable output voltage VO = Vref to 20V
• Low service cathode current, 150µA typical • 0.1Ω typical output impedance • Available in SOT-89, TO-92 and SOT-23 packages
Application • Linear Regulator • Adjustable Regulated Power Supply • Switching Power Supply