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ZXRE250ASA-7

CategoryPower/power management    Voltage reference chip   
File Size716KB,12 Pages
ManufacturerDiodes
Websitehttp://www.diodes.com/
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ZXRE250ASA-7 - - View Buy Now
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
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.
Pin Assignments
ZXRE250
(Top View)
3
ANODE
1
2
CATHODE
REF
SOT23
(Top View)
NC
Leave floating or
connect to pin 5
CATHODE
1
2
3
4 REF
5
ANODE
Features
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: V
REF
to 36V
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
SOT25
ZXRE252
(Top View)
3
ANODE
1
2
REF
CATHODE
Applications
Optocoupler Linearisers
Shunt Regulators
Improved Zener
Variable Reference
SOT23
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
Document number: DS35228 Rev. 7 - 3
1 of 12
www.diodes.com
June 2018
© Diodes Incorporated

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