ZXRE250AW5-7

NOT RECOMMENDED FOR NEW DESIGN USE AP431SHA(B)N1TR-G1 FOR ZXRE250B(A)SA-7 USE AP431SHA(B)NTR-G1FOR ZXRE252B(A)SA-7 ZXRE250 / ZXRE252 VERY LOW CATHODE CURRENT ADJUSTABLE PRECISION SHUNT REGULATOR Description Pin Assignments 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 (Top View) ANODE 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. 3 REF 2 CATHODE 1 SOT23 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. Features • • • • • • • • • (Top View) NC 1 Leave floating or connect to pin 5 2 CATHODE 3 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 (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) 5 ANODE 4 REF SOT25 ZXRE252 (Top View) ANODE 3 CATHODE 2 REF 1 Applications • • • • SOT23 Optocoupler Linearisers Shunt Regulators Improved Zener Variable Reference Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain