Datasheet ZXRE250, ZXRE252 (Diodes)

NOT RECOMMENDED FOR NEW DESIGN USE AP431SHA(B)N1TR-G1 FOR ZXRE250B(A)SA-7 USE AP431SHA(B)NTR-G1F OR 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
ZXRE250
regulators that offer excellent temperature stability and output current handling capability up to 100mA. The output voltage may be set to
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any chosen voltage between 2.5V and 36V by selection of two external divider resistors. 3 REF RE ANO A DE NO ZXRE250 has the same electrical specifications as the industry 1 standard ‘431 except it features a very-low minimum cathode current 2 CAT CA HO T DE for regulation. The typical value of 40µA makes the parts ideal for very low-power applications.
SO S T23
The devices can be used as a replacement for zener diodes in many applications requiring an improvement in zener performance. The
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ZXRE250/2 is available in two grades with initial tolerances of 1% and 0.5% for the A and B grades respectively. NC 1 5 ANODE NO Leave f Leav l e f oati oat ng or ng 2 connec on t nec to pi o n 5 n
Features
• Minimum Cathode Current for Regulation: 40μA (typ) CATHO T DE 3 4 REF • Temperature Range: -40°C to +125°C • Reference Voltage Tolerance at +25°C
SO S T25
ZXRE250A: 2.495V ± 1.0% ZXRE250B: 2.495V ± 0.5% •
ZXRE252
Low Output Noise • 0.2Ω Typical Output Impedance
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• Sink Current Capability: 0.065mA to 100mA • Adjustable Output Voltage: VREF to 36V 3 CAT CA HO T DE •
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
•
Halogen and Antimony Free. “Green” Device (Note 3)
ANO A DE NO 1 2 REF RE
Applications
• Optocoupler Linearisers
SO S T23
• 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 <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. ZXRE250 / ZXRE252 1 of 12 June 2018 Document number: DS35228 Rev. 7 - 3
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© Diodes Incorporated Document Outline Pin Assignments Description Features Applications (2) Package Type: SOT23 (2) Package Types: SOT23