SE432 Datasheet PDF - Seaward

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SE432
Seaward

Part Number SE432
Description ADJUSTABLE PRECISION SHUNT REGULATOR
Page 6 Pages


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SEAWARD
ELECTRONICS
INC.
Adjustable Precision
Shunt Regulator
SE432
Description
The SE432 is a low voltage three terminal
adjustable shunt regulator with a guaranteed
www.datatshheeremt4aul.comstability over applicable temperature
ranges. The output voltage can be set to any value
between VREF (approximately 1.24 V) to 12V with
two external resistors. This device has a typical
output impedance of 0.25. Active output circuitry
provides a very sharp turn on characteristic, making
this device excellent replacement for Zener diodes
in many applications.
The SE432 is characterized for operation from
0oC to 105oC, and four package options (SOT-23-3,
SOT-23-5, TO-92 and SOP-8) allow the designer
the opportunity to select the proper package for
their applications.
Features
¾ Low voltage operation (1.24V)
¾ Adjustable output voltage V0 =VREF to 12V
¾ Wide operating current range 60µA to 100mA
¾ Low dynamic output impedance 0.25(Typ.)
¾ Trimmed bandgap design up to + 0.5%.
¾ ESD rating is 4KV(Per MIL-STD-883D)
Application
¾ Linear Regulators
¾ Adjustable Supplies
¾ Switching Power Supplies
¾ Battery Operated Computers
¾ Instrumentation
¾ Computer Disk Drives
Pin Configuration
SOT-23-3, SC59-3L
(Top View)
SOT-23-5L
(Top View)
SOP-8
(Top View)
TO-92
(Top View)
Anode
3
2 Cathode
1 Reference
NC 1
NC 2
Cathode
3
5 Anode
4 Reference
Cathode
Anode
Anode
NC
1
2
3
4
8 Reference
7 Anode
6 Anode
5 NC
3 Cathode
2 Anode
1 Reference
Marking Information
Package
Marking
SOT-23-3
SC59-3L
SE432W
SOT-23-5L
SE432W
SOP-8
TO-92
SE432
YYWW
SE432
YYWW
Production Year Code
Production Week Code
Starting with S, a bar on top of S is for production year
2001, and underlined S is for year 2002. The next
character is marked on top for 2003, and underlined for
2004. The naming pattern continues with consecutive
A-Z: 1-26
a-z: 27-52
characters for later years.
WW is for the week of
YY is for the year of production. 04 means the production. 26 means the
product is manufactured in year of 2004.
product is manufactured in
the 26th week
© Seaward Electronics, Inc., 2004. • www.seawardinc.com.cn • Tel: 0086-010-82895700 • Fax: 0086-010-82895706
Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China
All contents are subject to change without prior notice.
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SEAWARD
ELECTRONICS
INC.
Absolute Maximum Rating
Parameter
Cathode Voltage
www.datasheet4uC.coonmtinuous Cathode Current
Reference Current
Operating Junction Temperature Range
Storage Temperature Range
Thermal Resistance
Lead Temperature (Soldering) 10 seconds
Adjustable Precision
Shunt Regulator
Symbol
VKA
I KA
I REF
TJ
TSTG
θ JA
TLEAD
Maximum
12
150
3
150
-45 to 150
230 (SOT-23-3)
230 (SOT-23-5)
150 (SOP-8)
220 (TO-92)
260
SE432
Units
V
mA
mA
°C
°C
°C/W
°C
Electrical Characteristics
Parameter
0.5%
Reference
1.0%
Voltage
1.5%
2.0%
Symbol
VREF
Deviation of Reference Voltage over
Full Temperature Range
VI(DEV)
Ratio of Change in Reference Voltage
to the Change in Cathode Voltage
VREF/VKA
Reference Current
IREF
Deviation of Reference Current over
Full Temperature Range
Minimum Cathode Current for
Regulation
Off-state Cathode Current
II(DEV)
IMIN
IOFF
Dynamic Impedance
| ZKA |
Test Conditions & Circuit
Test circuit #1
VKA = VREF, IKA = 10mA
Test circuit #1
VKA = VREF, IKA = 10mA,
TA = 0°C - 105°C
Test circuit #2
IKA = 10mA, VKA = 12V to VREF
Test circuit #2
IKA = 10mA, R1=10k, R2 =
Test circuit #2
IKA = 10mA, R1=10k, R2 =
TA = 0°C - 105°C
Test circuit #1
VKA = VREF
Test circuit #3
VKA = 12V, VREF = 0
Test circuit #1
IKA = 100µA - 80mA,
VKA = VREF, f 1kHZ
Min
1234
1228
1215
1221
Typ
1240
1240
1240
1240
Max
1246
1252
1265
1259
Unit
mV
-- 10 25 mV
-- -1.0 -2.7 mV/V
-- 0.15 2
µA
-- 0.10 0.50 µA
-- 60 100 µA
-- 0.04 0.8 µA
-- 0.25 1
© Seaward Electronics, Inc., 2004. • www.seawardinc.com.cn • Tel: 0086-010-82895700 • Fax: 0086-010-82895706
Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China
All contents are subject to change without prior notice.
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SEAWARD
ELECTRONICS
INC.
Adjustable Precision
Shunt Regulator
SE432
Typical Performance Characteristics
Cathode Current VS Cathode
www.datasheet4u.com
Voltage
150
125
100
75
50
25
0
-25
-50
-75
-100
-2
VKA = Vref
TA = 25C
-1 0
1
Cathode Voltage (V)
2
Cathode Current VS Cathode
Voltage
500
VKA = Vref
400 TA = 25C
300
200
100
0
-100
-200
-1
01
Cathode Voltage (V)
2
Reference Voltage VS Junction
Temperature
1260
1250
1240
Iz=10mA
1230
1220
Iz=60µA
1210
1200
-20
0 20 40 60 80 100 120
Junction Temperature (C)
Reference Input Current VS Junction Temperature
1000
800
R1 = 10k
R2 =
IKA =10mA
600
400
200
0
- 20
0
20 40 60 80 100 120
Junction Temperature (C)
© Seaward Electronics, Inc., 2004. • www.seawardinc.com.cn • Tel: 0086-010-82895700 • Fax: 0086-010-82895706
Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China
All contents are subject to change without prior notice.
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SEAWARD
ELECTRONICS
INC.
Symbol Diagram
Adjustable Precision
Shunt Regulator
Block Diagram
www.datasheet4u.com
Cathode
Ref
Test Circuits
Input
Anode
V KA
I KA
Input
Cathode
Ref
+
-
Vref
Anode
VKA
I KA
Input
R1
Iref
Vref
R2 Vref
VKA = Vref (1+RR12) + Iref x R1
SE432
VKA
I off
Test Circuit 1:
VKA = VREF
Application Circuit
VIN R
Test Circuit 2:
VKA > VREF
Test Circuit 3:
Off State Current
VOUT
R1
Vref
R2
SE432
VOUT = Vref (1+RR12 )
GND
© Seaward Electronics, Inc., 2004. • www.seawardinc.com.cn • Tel: 0086-010-82895700 • Fax: 0086-010-82895706
Room 1605, Building 1, International Pioneering Park, #1 Shangdi XinXi Road • Haidian District, Beijing 100085, China
All contents are subject to change without prior notice.
4



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