DIODES ZXRE252ASA-7

The ZXRE250 and ZXRE252 are three-terminal adjustable shunt regulators that offer excellent temperature stability and output current handling capability up to 100mA. The output voltage may be set to any chosen voltage between 2.5V and 36V by selection of two external divider resistors. ZXRE250 has the same electrical specifications as the industry standard ‘431 except it features a very-low minimum cathode current for regulation. The typical value of 40μA makes the parts ideal for very low-power applications. The devices can be used as a replacement for zener diodes in many applications requiring an improvement in zener performance. The ZXRE250/2 is available in two grades with initial tolerances of 1% and 0.5% for the A and B grades respectively.

• Minimum Cathode Current for Regulation: 40μA (typ)
• Temperature Range: -40°C to +125°C
• Reference Voltage Tolerance at +25°C: ZXRE250A: 2.495V ±1.0%; ZXRE250B: 2.495V ±0.5%
• Low Output Noise
• 0.2Ω Typical Output Impedance
• Sink Current Capability: 0.065mA to 100mA
• Adjustable Output Voltage: VREF to 36V
• Totally Lead-Free & Fully RoHS Compliant
• Halogen and Antimony Free. “Green” Device

• Optocoupler Linearisers
• Shunt Regulators
• Improved Zener
• Variable Reference