Datenblatt-pdf.com

ZXRE252 Schematic ( Datenblatt PDF ) - Diodes

Teilenummer ZXRE252
Beschreibung VERY LOW CATHODE CURRENT ADJUSTABLE PRECISION SHUNT REGULATOR
Hersteller Diodes
Logo Diodes Logo 



Gesamt 14 Seiten
		
ZXRE252 Datasheet, Funktion
ZXRE250/ZXRE252
VERY LOW CATHODE CURRENT ADJUSTABLE
PRECISION SHUNT REGULATOR
Description
The ZXRE250 and ZXRE252 are three terminal adjustable
shunt regulators offering excellent temperature stability and
output current handling capability up to 100mA. The output
voltage may be set to any chosen voltage between 2.5 and
36 volts by selection of two external divider resistors.
ZXRE250 has the same electrical specifications as the
industry standard ‘431 except that 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 2 grades with
initial tolerances of 1% and 0.5% for the A and B grades
respectively.
Features
Minimum cathode current for regulation: 40μA (typ)
Temperature range -40 to 125ºC
Reference Voltage Tolerance at 25°C
o ZXRE250A: 2.495V ± 1.0%.
o ZXRE250B: 2.495V ± 0.5%
Low Output Noise
0.2Typical Output Impedance
Sink Current Capability: 0.065mA to 100mA
Adjustable Output Voltage: VREF to 36V
SOT23 and SOT25: Available in “Green” Molding
Compound (No Br, Sb) and Lead Free Finish/ RoHS
Compliant (Note 1)
Applications
Opto-Coupler Linearisers
Shunt Regulators
Improved Zener
Variable Reference
Pin Assignments
ZXRE250
(Top View)
ANODE 1
3 REF
2 CATHODE
SOT23
(Top View)
NC 1
Leave floating or
connect to pin 5
2
CATHODE 3
5 ANODE
4 REF
SOT25
ZXRE252
(Top View)
ANODE 1
3 CATHODE
2 REF
SOT23
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
ZXRE250/ZXRE252
Document number: DS35228 Rev. 3 - 2
1 of 14
www.diodes.com
May 2011
© Diodes Incorporated






ZXRE252 Datasheet, Funktion
ZXRE250/ZXRE252
VERY LOW CATHODE CURRENT ADJUSTABLE
PRECISION SHUNT REGULATOR
Typical Performance Characteristics (cont.)
0.5 0
0.4 5
0.4 0
VKA = 36V
VREF = 0
0.3 5
0.3 0
0.2 5
0.2 0
0.1 5
0.1 0
0.0 5
0.0 0
-75 -50 -25 0 25 50 75 100 125
TA Free Air Temperature (°C)
Off-State Cathode Current vs. Free Air Temperature
40 0
38 0
36 0
IKA = 10mA
VKA = VREF
TA = 25°C
34 0
32 0
30 0
28 0
26 0
24 0
22 0
20 0
10
100 1K 10K 100K
f- Frequency (Hz)
Equivalent Input Noise Voltage vs. Frequency
-0.2
-0.3
-0.4
VKA = 3V t o 36V
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
-50 -25 0 25 50 75 100 125
TA Free Air Temperature (C)
Ratio of Delta Reference Voltage to Delta Cathode
Voltage vs. Free Air Temperature
ZXRE250/ZXRE252
Document number: DS35228 Rev. 3 - 2
6 of 14
www.diodes.com
May 2011
© Diodes Incorporated

6 Page







ZXRE252 pdf, datenblatt
ZXRE250/ZXRE252
VERY LOW CATHODE CURRENT ADJUSTABLE
PRECISION SHUNT REGULATOR
Marking Information
(1) SOT23
( Top View )
3
XX Y W X
12
XX : Identification code
Y : Year 0~9
W : Week : A~Z : 1~26 week;
a~z : 27~52 week; z represents
52 and 53 week
X : A~Z : Green
Device
ZXRE250ASA
ZXRE250BSA
ZXRE252ASA
ZXRE252BSA
Package
SOT23
SOT23
SOT23
SOT23
Identification Code
DA
DB
FA
FB
(2) SOT25
( Top View )
54
XX Y W X
123
XX : Identification code
Y : Year 0~9
W : Week : A~Z : 1~26 week;
a~z : 27~52 week; z represents
52 and 53 week
X : A~Z : Green
Device
ZXRE250AW5
ZXRE250BW5
Package
SOT25
SOT25
Identification Code
DA
DB
ZXRE250/ZXRE252
Document number: DS35228 Rev. 3 - 2
12 of 14
www.diodes.com
May 2011
© Diodes Incorporated

12 Page


SeitenGesamt 14 Seiten
PDF Download[ ZXRE252.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
ZXRE250VERY LOW CATHODE CURRENT ADJUSTABLE PRECISION SHUNT REGULATORDiodes
Diodes
ZXRE252VERY LOW CATHODE CURRENT ADJUSTABLE PRECISION SHUNT REGULATORDiodes
Diodes

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com    |   2019   |  Kontakt  |   Suche