View SE431D_4507422.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Description
The SE431D is a low voltage three terminal adjustable shunt regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage can be set to any value between VREF (approximately 2.5 V) to 18V with two external resistors. This device has a typical output impedance of 0.08. Active output circuitry provides a very sharp turn on characteristic, making this device excellent replacement for Zener diodes in many applications. The SE431D is characterized for operation from -40oC to 85oC, and five package options (SOT-23-3, SOT-23-5, SOP-8, TO-92 and SOT-89) allow the designer the opportunity to select the proper package for their applications.
Features
Low voltage operation (2.5V) Adjustable output voltage V0 = VREF to 18V Wide operating current range 150A to 80mA Low dynamic output impedance 0.08 (Typ.). Trimmed bandgap design up to + 0.5%. ESD rating is 6KV(Per MIL-STD-883D). RoHS Compliant and 100% Lead (Pb)-Free.
Application
Linear Regulators Adjustable Supplies Switching Power Supplies Battery Operated Computers Instrumentation Computer Disk Drives
Block Diagram
Cathode
Symbol Diagram
Cathode
Ref
+
Ref
Vref Anode
Anode
Revision 12/4/2008 All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 1
Marking Information
Package SOT-23-3 SC59-3L SOT-23-3 SOT-23-5L SOP-8 Marking 431x 431Sx (SE431DS) 431x SE431 XXXX-LF SE431 XXXX-LF SE431 XXXX-LF XXXX is the batch number.
Lead-free package is
Production Batch Number
Lead-Free Package
The last character is the batch number.
Lead-free
package
is
indicated by a dot on top of the last character.
SOT-89
indicated by LF after XXXX.
TO-92
Pin Configuration
SOT-23-3 SOT-23-3L (SC59-3L) SOT-23-3 (Order as SE431DS) SOT-23-5L
TO-92 SOP-8 (Top View) SOT-89
Revision 12/4/2008
All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 2
Absolute Maximum Ratings
Parameter
Cathode Voltage Continuous Cathode Current Reference Current Operating Junction Temperature Range Storage Temperature Range
Symbol
VKA I KA I REF TJ TSTG
Maximum
18 80 1 -40 to 85 -65 to 150 120 (SOT-89) 230 (SOT-23-3)
Units
V mA mA C C
Thermal Resistance
JA
230 (SOT-23-5L) 150 (SOP-8) 220 (TO-92)
C/W
Lead Temperature (Soldering) 10 seconds
TLEAD
260
C
Electrical Characteristics
TA=25, unless otherwise specified.
TEST PARAMETER 0.5% Reference Voltage 1% 2% Deviation of reference voltage over full temperature range Ratio of change in reference voltage to the change in cathode voltage SYMBOL CIRCUIT TEST CONDITIONS MIN TYP MAX UNIT
2483 VREF 1
VKA = VREF, IKA = 10mA
2495 2495 2495 -14
2507 2520 2545 -mV mV
2470 2445
VI(dev)
1
VKA = VREF, IKA = 10mA TA = -40C to 85C IKA = 3mA, VKA = 10 V - VREF IKA = 10mA, R1=10k, R2 = IKA = 10mA, R1=10k, R2 = , TA = -40C to 85C VKA = VREF VKA = 18V, VREF = 0 IKA = 1mA to 80mA,
--
VREF VKA
IREF
2
--
0.2
2.7
mV/V
Reference current Deviation of Reference current over full temperature range Minimum cathode current for regulation
2
--
0.3
4
A A mA A
II(dev) IMIN IOFF ZKA
2 1 3 1
-----
-0.13 0.15 0.4 0.08
-0.3 1 0.7
Off-state cathode current Dynamic impedance
VKA = VREF, f 1kHZ
Revision 12/4/2008
All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 3
Typical Performance Characteristics
CATHODE CURRENT Vs. CATHODE VOLTAGE
1200
Cathode Current VS. Cathode Voltage
VKA=Vref TA=25
Cathode Current (uA)
75 50
VKA = Vref TA = 25oC
1000 800 600 400 200 0
Cathode Current (mA)
25 0 -25 -50 -75
-100 -2 -1 0 1 2 3
-200 -1
Cathode Voltage (V)
Cathode Voltage (V)
0
1
2
3
Reference Voltage VS Junction Temperature
2.6 2.58 2.56 2.54 2.52 2.5 2.48 2.46 2.44 2.42 2.4 -50 -25 0 25 50 75 100
Reference Voltage (V)
Junction Temperature ()
Revision 12/4/2008
All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 4
Test Circuits
Input
V KA
Input
I KA
VKA
Input
VKA
I off
I KA
R1 Iref
Vref
R2
Vref
R1 VKA = Vref (1+ ) + Iref x R1 R2
Test Circuit 1: VKA = VREF
Test Circuit 2: VKA > VREF
Test Circuit 3: Off State Current
Application Diagram
Thermal Consideration
Package Power Rating (TA=25C)
SOT-23-3 (JA=230C/W) SOT-23-5L (JA=230C/W) TO-92 (JA=220C/W)
1. Maximum junction temperature is 125C 2. JA is measured with packages mounted onboard under still-air condition with 1W power applied. 3. Power rating is calculated using PD = (TJ - TA) /JA, where TJ denotes junction temperature and TA denotes ambient temperature.
Power Rating (TA=50C) 326mW 326mW 341mW
Power Rating (TA=70C) 239mW 239mW 250mW
435mW 435mW 455mW
Revision 12/4/2008
All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 5
OUTLINE DRAWING SOT-23-3
C J B H
DIM A B C D E F G H J K L
N
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.110 0.047 0.083 0.035 0.070 0.018 0.015 0.0005 0.034 0.003 0.120 0.055 0.104 0.040 0.080 0.024 0.020 0.004 0.040 0.007 0.027 2.80 1.20 2.10 0.89 1.78 0.45 0.37 0.013 0.887 0.085 3.04 1.40 2.64 1.03 2.05 0.60 0.51 0.10 1.02 0.18 0.69
D A E
F
G
K
L
OUTLINE DRAWING SC59-3L (SOT-23-3L)
H
A
DIM
A1
N
E
B
e1
D
L
Q
SC 59-3L
L1 C
A A1 B C D H E e e1 L1 L Q
DIMENSIONS INCHE MM MIN MAX MIN MAX 0.035 0.043 0.90 1.10 0.0004 0.005 0.01 0.13 0.012 0.020 0.30 0.50 0.004 0.008 0.09 0.20 0.110 0.122 2.80 3.10 0.098 0.122 2.50 3.10 0.059 0.067 1.50 1.70
0.037REF 0.075REF 0.008 0.014 0 0.022 0.031 10 0.95REF 1.90REF 0.20 0.35 0 0.55 0.80 10
OUTLINE DRAWING SOT-23-5L
K B H D
DIMN A B C D E F H J K
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.110 0.059 0.036 0.014 0.0035 0.102 0.120 0.070 0.051 0.020 0.037 0.075 0.006 0.008 0.118 2.80 1.50 0.90 0.35 0.090 2.60 3.05 1.75 1.30 0.50 0.95 1.90 0.15 0.20 3.00
A
F E
C
J
Revision 12/4/2008
All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 6
OUTLINE DRAWING TO-92
A
B D
DIMN A B E F G H J K
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.175 0.170 0.500 0.016 0.045 0.095 0.080 0.125 0.205 0.210 0.610 0.021 0.055 0.105 0.105 0.165 4.445 4.318 12.70 0.407 1.143 2.413 2.032 3.175 5.207 5.334 15.50 0.533 1.397 2.667 2.667 4.191
E
G F H K
J
OUTLINE DRAWING SOP-8
1 2
D
8 7 6
B1
B
DIM A A1 B B1 C D H E
N
3 4
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.0532 0.0688 0.0040 0.0098 0.0130 0.0200 0.050 BSC 0.0075 0.0098 0.1890 0.1968 0.2284 0.2440 0.1497 0.1574 1.35 1.75 0.10 0.25 0.33 0.51 1.27 BSC 0.19 0.25 4.80 5.00 5.80 6.20 3.80 4.00
5
A1 E H A
C
OUTLINE DRAWING SOT-89
N
SOT-89
A C D K L M J
DIM A B C D E F G H I J K L M
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.173 0.181 0.159 0.167 0.067 0.075 0.051 0.059 0.094 0.102 0.035 0.047 0.118REF 0.059REF 0.016 0.020 0.055 0.063 0.014 0.016 10TYP 0.028REF 4.400 4.600 4.050 4.250 1.700 1.900 1.300 1.500 2.400 2.600 0.890 1.200 3.00REF 1.50REF 0.400 0.520 1.400 1.600 0.350 0.410 10TYP 0.70REF
B
F
E
H
G I
Revision 12/4/2008
All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 7
Customer Support
Seaward Electronics Incorporated - China Section B, 2nd Floor, ShangDi Scientific Office Complex, #22 XinXi Road Haidian District, Beijing 100085, China Tel: 86-10-8289-5700/01/05 Fax: 86-10-8289-5706 Seaward Electronics Corporation - Taiwan 2F, #181, Sec. 3, Minquan East Rd, Taipei, Taiwan R.O.C Tel: 886-2-2712-0307 Fax: 886-2-2712-0191 Seaward Electronics Incorporated - North America 1512 Centre Pointe Dr. Milpitas, CA95035, USA Tel: 1-408-821-6600 Last Updated - 12/4/2008
Revision 12/4/2008
All contents are subject to change without prior notice. (c) Seaward Electronics, Inc., 2006. * www.seawardinc.com.cn * Page 8

▲Up To Search▲

Price & Availability of SE431D

	To Download SE431D Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .