SPX432 [SIPEX]
Ultra 1.24V Precision Adjustable Shunt Regulator; 超1.24V精密可调并联稳压器![SPX432](http://pdffile.icpdf.com/pdf1/p00075/img/icpdf/SPX432_396743_icpdf.jpg)
型号: | SPX432 |
厂家: | ![]() |
描述: | Ultra 1.24V Precision Adjustable Shunt Regulator |
文件: | 总9页 (文件大小:168K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
SPX432
Ultra 1.24V Precision Adjustable
Shunt Regulator
FEATURES
APPLICATIONS
•
•
•
•
•
•
•
•
Low Voltage Operation........................................ 1.24V
•
•
•
•
•
•
3.0V to 3.3V Switching Power Supplies
Adjustable Supplies
Trimmed Bandgap to...................................0.5%/ 1%
Wide Operating Current ................... 1mA to 100mA
Extended Temperature Range ...............0°C to 105°C
Adjustable Output Voltage...........................VREF to 18V
Low Temperature Coefficient ....................... 50 ppm/°C
Offered in TO-92, SOIC, SOT-23-3, SOT-23-5
Error Amplifiers
Single Supply Amplifier
Monitors / VCR / TV
Personal Computers
Improved Replacement in Performance for TLV431
PRODUCT DESCRIPTION
The SPX432 is a 3-terminal Adjustable Shunt Voltage Regulator providing a highly accurate 1.24V bandgap reference with 0.5%
tolerance. The SPX432 thermal stability, wide operating current (80mA) and temperature range (0°C to 105°C) makes it suitable for
abroad range of applications. SPX432 tolerance of 0.5% is proven to be sufficient to overcome other errors in the system to
virtually eliminate the need for trimming in the power supply manufactures assembly line and contribute a significant cost
savings.
The SPX432 is an ideal voltage reference in an isolated feedback circuit for 3.0V to 3.3V switching mode power supplies. SPX432
offers many advantages over TLV431, such as, wider output voltage up to 18V vs. 6V, output current of 80mA vs. 15mA, and a wider
temperature range with tighter tolerance down to 0.5%.
PIN CONNECTIONS
8-Pin Surface Mount (S)
TO-92 (N)
2
1
3
CATHODE
ANODE
ANODE
N/C
1
2
3
4
8
7
6
5
REF
ANODE
ANODE
N/C
SPX432
REF
CATHODE
ANODE
Top View
Bottom View
SOT-23-5 (M5)
SOT-23-3 (M)
ANODE
ANODE
REF
SPX432
SPX432
N/C N/C
REF
CATHODE
CATHODE
Top View
Top View
Rev. 11/21/00
SPX432
CATHODE (K)
REFERENCE
(R)
+
-
1.24V
ANODE (A)
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Rating
Units
V
Cathode-Anode Reverse Breakdown
Anode-Cathode Forward Current
Operating Cathode Current
Reference Input Current
Continuous Power at 25°C
TO-92
VDA
IAK
IKA
IREF
PD
18
1
A
80
1
mA
mA
775
750
mW
mW
mW
°C
°C
°C
8L SOIC
200
SOT-23
Junction Temperature
Storage Temperature
Lead Temperature (Soldering 10 sec.)
TJ
TSTG
TL
150
- 65 to +150
300
Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect reliability.
RECOMMENDED CONDITIONS
TYPICAL THERMAL RESISTANCES
Parameter
Symbol
VKA
Rating
VREF to 18
10
Unit
V
mA
Package
TO-92
SOIC
Typical Derating
6.3 mW/°C
θJA
θJC
Cathode Voltage
Cathode Current
160 °C/W
80 °C/W
45 °C/W
IK
175 °C/W
5.7 mW/°C
SOT-23
575°C/W
150°C/W
1.7mW/°C
Rev. 11/21/00
SPX432
ELECTRICAL CHARACTERISTICS are guaranteed over the full junction temperature range (0°C to 105°C). Ambient
temperature must be derated based upon power dissipation and package thermal characteristics. Unless otherwise specified, test
conditions are: VKA = VREF and IK = 10mA.
Test
SPX432A
SPX432
Parameter
Symbol Circuit Test Condition
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage
VREF
1
1
IK = 10mA,
1.2338 1.240
1.2462
1.2276 1.240 1.2524
V
TJ = 25°C,
VK = VREF
Line Regulation
Load Regulation
Temperature Deviation
Reference Input Current
VREF
VREF
VREF
IREF
1
1
1
2
2
VKA = 1.25V to 15V
19
3
2
3
0.3
37
6
6
6
0.6
19
3
2
3
0.3
37
6
6
6
0.6
mV
mV
mV
µA
µA
IK = 1 to 80mA
0 < TJ < 105°C
Reference Input Current
Temperature Coefficient
Minimum Cathode
I REF
0 < TJ < 105°C
IK (MIN)
IK (MIN)
1
3
0.6
1
0.6
1
mA
nA
Current for Regulation
Off State Leakage
VREF = 0V, VKA
18V
=
0.04
500
0.04
500
Calculating Average Temperature Coefficient (TC)
∆
VREF (mV)
0
0
0
TC in mV/°C =
TC in %/°C =
TC in ppm/°C =
∆
TA
∆
VREF
)
∆Τ
∆
VREF
REF at 25°C
∆
TA
x 100
)
V
-10
5000 0.5
)
∆
VREF
x 106
)
VREF at 25°C
-20
-55 -25
0
25 50 75 100 125
Temperature (°C)
0.06 mV/°C
∆
TA
0.002 %/°C
24 ppm/°C
TEST CIRCUITS
VIN
VKA = VREF
VIN
VKA
VIN
VKA
IREF
IK
IK
IK (OFF)
R1
(VREF
R2
IREF
)
Figure 1a. Test Circuit 1
Figure 1b. Test Circuit 2
Figure 1c. Test Circuit 3
Rev. 11/21/00
SPX432
TYPICAL APPLICATIONS
+3.3V
0.1µF
470µF
PHD 3055E
+12V
500Ω
2.7V
140
Ω
0.1µF
0.1µF
0.1µF
INTEL
I 740
AS432
1000µF
120
Ω
*If the output voltage has noise, then please add a 0.1µF in between drain and gate of power
MOSFET to reduce the noise.
Rev. 11/21/00
SPX432
PACKAGE DRAWING
SOIC-8 (S)
4.0 (0.158)
3.8 (0.150)
5.2 (0.205)
4.6 (0.181)
6.2 (0.244)
5.8 (0.228)
Pin 1
1.27 (0.50)
BSC
1.75 (0.069)
1.35 (0.053)
0.78 (0.031)
0.61 (0.024)
0.77 (0.030)
0.64 (0.025)
°
(4 PLCS)
°
45
5.0 (0.197)
4.8 (0.188)
0.37 (0.015)
BSC
7
°
3 -6
°
0.56 (0.022)
0.49 (0.019)
0.22 (0.009)
0.19 (0.007)
°
7
(4 PLCS)
0.45 (0.018)
0.35 (0.014)
0.20 (0.008)
0.10 (0.004)
Rev. 11/21/00
SPX432
PACKAGE DRAWING
SOT-23-3L (M)
0.015 - 0.018
(0.381 - 0.457)
0.047 - 0.055 0.083 - 0.098
(1.194 - 1.397) (2.108 - 2.489)
0.035 - 0.040
(0.889 - 1.016)
0.020 - 0.024
0.070 - 0.080
(0.508 - 0.610)
(1.778 - 2.032)
0.110 - 0.120
0.003 - 0.005
(2.794 - 3.048)
(0.076 - 0.127)
0.030 - 0.041
0.018 - 0.024
(0.457 - 0.610)
0.001 - 0.004
(0.025 - 0.102)
(0.762 - 1.041)
Rev. 11/21/00
SPX432
PACKAGE DRAWING
TO-92 (N)
0.090 (2.286) Radius typ.
2
1
3
0.145 (3.683)
0.135 (3.429)
0.055 (1.397)
0.045 (1.143)
10° typ.
BOTTOM VIEW
0.085 (2.159) Diameter
0.185 (4.699)
0.045 (1.143)
5° typ.
5° typ.
0.185 (4.699)
0.175 (4.445)
0.090 (2.286) typ.
Seating Plane
0.025 (0.635) Max
Uncontrolled
Lead Diameter
0.500 (12.70) Min.
0.016 (0.406)
0.014 (0.356)
0.0155 (0.3937)
0.0145 (0.3683)
0.055 (1.397)
0.045 (1.143)
0.105 (2.667)
0.095 (2.413)
Rev. 11/21/00
SPX432
PACKAGE DRAWING
SOT-23-5L (M5)
D
B (5 PLACES)
H
E
e
e1
A
A2
C
A1
L
INCHES
MILLIMETERS
NOTE:
1. REFER TO APPLICABLE
MIN.
0.90
0
MAX
1.30
0.10
MIN.
MAX.
A
A1
A2
B
.035
0
.051
.004
2. CONTROLLING DIMENTION : MILLIMETER
3. PACKAGE SURFACE FINISHING TO BE SMOOTH
FINISH.
0.80 REF
.0315 REF
0.30
0.10
2.70
1.40
0.50
0.35
3.10
1.80
.012
.004
.106
.055
.019
.0137
.122
C
D
E
.071
e
.037 BSC.
0.95 BSC.
e1
H
L
1.70
2.50
2.10
3.00
.066
.098
.082
.118
MIN 0.2
MIN .0078
Rev. 11/21/00
SPX432
ORDERING INFORMATION
Ordering No. Precision Output Accuracy
Packages
3 Lead SOT-22-3
3 Lead SOT-23-3
5 Lead SOT-22-5
5 Lead SOT-23-5
8 Lead SOIC
1%
0.5%
1%
1.24V
1.24V
1.24V
1.24V
1.24V
1.24V
1.24V
1.24V
SPX432M
SPX432AM
SPX432M5
SPX432AM5
SPX432S
0.5%
1%
0.5%
1%
8 Lead SOIC
SPX432AS
SPX432N
3 Lead TO-92
0.5%
3 Lead TO-92
SPX432AN
MARKING INFORMATION
[For SOT-23 (3 and 5 Pin) and SOT-89 only]
Device
SPX432A
SPX432
Marking
4321
4322
Corporation
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation
Headquarters and Main Offices:
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 935-7600
FAX: (408) 934-7500
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described
hereing; neither does it convey any license under its patent rights nor the rights of others.
Rev. 11/21/00
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