SPX1432AM [EXAR]
Two Terminal Voltage Reference, 1 Output, 1.24V, Trim/Adjustable, BIPolar, PDSO3, TO-236AB, SOT-23, 3 PIN;型号: | SPX1432AM |
厂家: | EXAR CORPORATION |
描述: | Two Terminal Voltage Reference, 1 Output, 1.24V, Trim/Adjustable, BIPolar, PDSO3, TO-236AB, SOT-23, 3 PIN 光电二极管 输出元件 |
文件: | 总7页 (文件大小:99K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
®
SPX1432
1.24V Precision Adjustable Shunt Regulator
FEATURES
■ Reference Voltage: 1.24V
ANODE
3
■ Initial Accuracy: 0.5%
■ Wide Operating Current, 60µA to 100mA
■ Ultra Low Reference Input Current, 100nA
■ Operating Voltage Range: VREF to 20V
■ 0°C to 105°C Guaranteed Operation
■ SOT-23-3 Package
SPX1432
1
2
REF
CATHODE
■ Upgrade to LMV431, TLV431, SC431L
APPLICATIONS
■ Switching Power Supplies
■ Adjustable Supplies
■ Error Amplifiers
■ Single Supply Amplifier
■ Monitors / VCRs / TVs
■ Personal Computers
■ Voltage References
DESCRIPTION
The SPX1432 is a three terminal adjustable shunt voltage regulator that provides a highly accurate 1.24V
bandgap reference with 0.5% accuracy, eliminating the need for trimming in most power supply designs.
Offered in the tiny SOT-23 package, the SPX1432 has an extremely wide operating current range of 60uA
to 100mA, and reference input current of only 100nA (typ). The SPX1432 can regulate outputs from VREF
to 20V, using two external resistors, and is guaranteed over the extended commercial temperature range
of 0°C to 105°C.
The combination of the small size, wide output current capability, flexible voltage range, and stable
performance over the entire extended commercial temperature range, makes the SPX1432 the ideal
candidate a variety of shunt regulator and current source designs in applications such as Portable meters,
Instrumentation, and Industrial Process Control.
FUNCTIONAL DIAGRAM
Cathode (K)
Reference
(R)
+
-
1.24V
Anode (A)
Date: 5/6/04
SPX1432 1.24V Precision Adjustable Shunt Regulator
© Copyright 2004 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
Cathode-Anode Reverse Breakdown VKZ ....................................... 22V
Anode-Cathode Forward Current, (<10ms) IAK ................................. 1A
Operating Cathode Current IKA .................................................. 120mA
Reference Input Current IREF .......................................................... 1mA
Continuos Power Dissipation at 25°C PD
SOT-23 .................................................................. 200 mW
Junction Temperature TJ ........................................................... 150 °C
Storage Temperature TSTG .............................................. -65 to 150 °C
Lead Temperature (Soldering 10 sec.) TL .................................. 300°C
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.
TYPICAL THERMAL RESISTANCES
RECOMMENDED CONDITIONS
PARAMETER
SYMBOL
RATING
VREF to 20
10
UNIT
V
PACKAGE
θJA
θJC
TYPICAL
DERATING
Cathode Voltage
Cathode Current
VKA
IK
SOT-23
575°C/W 150°C/W 1.7 mW/°C
mA
Typical deratings of the thermal resistances are given for ambient
temperature >25°.
ELECTRICAL CHARACTERISTICS
Electrical characteristics are guaranted 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.
PARAMETER
SYMBOL FIGURE CONDITIONS
MIN
TYP
MAX
UNITS
Accuracy 0.5%
SPX1432A
Output Voltage
VREF
VREF
VREF
VREF
IREF
2
2
3
2
3
3
TJ = 25°C
1.234
1.240
6
1.246
12
V
Temperature Deviation
Line Regulation
0 < TJ < 105°C
mV
mV
mV
µA
µA
VKA = 1.25V to 15V
IK = 100µA to 100mA
TJ = 25°C, R1 = 10KΩ, R2 = ∞
15
37
Load Regulation
10
30
Reference Input Current
0.1
0.05
0.3
0.2
Reference Input Current
Temperature Coefficient
IREF
0 < TJ < 105°C,
R1 = 10KΩ, R2 = ∞
Minimim Cathode
Current for Regulation
IK(MIN)
2
4
TJ = 25°C
60
80
µA
Off State Leakage
IK(MIN)
VREF = 0V, VKA = 18V, TJ = 25°C
0.01
500
nA
PARAMETER
SYMBOL FIGURE CONDITIONS
MIN
TYP
MAX
UNITS
Accuracy 1.0%
SPX1432
1.240
9
Output Voltage
VREF
VREF
VREF
VREF
IREF
2
2
3
2
3
3
TJ = 25°C
1.228
1.252
18
V
Temperature Deviation
Line Regulation
0 < TJ < 105°C
mV
mV
mV
µA
µA
VKA = 1.25V to 15V
IK = 100µA to 100mA
TJ = 25°C, R1 = 10KΩ, R2 = ∞
15
37
Load Regulation
10
30
Reference Input Current
0.1
0.5
0.4
Reference Input Current
Temperature Coefficient
IREF
0 < TJ < 105°C,
R1 = 10KΩ, R2 = ∞
0.05
Minimim Cathode
Current for Regulation
IK(MIN)
2
4
TJ = 25°C
60
100
500
µA
Off State Leakage
IK(MIN)
VREF = 0V, VKA = 18V, TJ = 25°C
0.01
nA
Date: 5/6/04
SPX1432 1.24V Precision Adjustable Shunt Regulator
© Copyright 2004 Sipex Corporation
2
CALCULATION AVERAGE TEMPERATURE COEFICIENT (TC)
ppm
%
mV
0
0
0
∆
VREF(mV)
TA
•
•
TC in mV / °C =
TC in % / °C =
∆
∆VREF
∆T
∆
VREF
x 100
(
∆
VREF at 25°C
)
TA
-5
∆
5000
0.5
∆
VREF
x 106
(
∆
VREF at 25°C
)
TA
•
TC in ppm / °C =
0
15
30
45
60
75 90 105
∆
Junction Temperature (°C)
0.0033mV /°C
0.0027% / °C
27ppm/°C
Figure 1. VREF VS Temperature.
TEST CIRCUITS
VIN
VKA
=
VREF
VIN
VKA
VIN
VKA
IK (OFF)
R1
(VREF
R2
IK
IREF
IK
IREF
)
Figure 2. Test Circuit for VKA = VREF
Figure 3. Test Circuit for VKA > VREF
Figure 4. Test Circuit for IKOFF
TYPICAL PERFORMANCE CHARACTERISTICS
15.0
200
12.5
10.0
7.5
V
KA
= V
REF
25°C
160
120
80
5.0
2.5
0
-2.5
-5.0
-7.5
-10.0
40
0
1.24
-60 -40 -20
0
20 40
60 80 100 120
-2
-1
0
1
2
3
T
-Ambient Temperature (°C)
A
V
KA
Cathode Voltage (V)
Reference Input Current VS Ambient Temperature.
High Current Operating Characteristics.
Date: 5/6/04
SPX1432 1.24V Precision Adjustable Shunt Regulator
© Copyright 2004 Sipex Corporation
3
TYPICAL PERFORMANCE CHARACTERISTICS: Continued
1.25
1.245
1.24
1.25
1.245
1.24
1.235
1.23
1.225
1.22
-60
1.235
-30
0
30
60
90
120
0.01
0.1
1
10
100
Ik--cathode Current (mA)
T
-Ambient Temperature (°C)
A
Reference Voltage VS Ambient Temperature.
Reference Voltage Load Regulation.
0
1000.0000
100.0000
10.0000
1.0000
-10
-20
-30
-40
0.1000
0.0100
0.0010
0.0001
-50
0
50
100
150
0
3
6
9
12
15
18
21
Ta Ambient Temperature (C)
V
-Cathode Voltage (V)
KA
Reference Voltage Line Regulation.
Off State Leakage VS Ambient Temperature.
V
IN
R
V
OUT
I
Ch1-VIN
K
f
= 100kHz
50Ω
P
Ch2-VKA
GND
Test Circuit for Pulse Response.
IKA = 0 to 100µA.
Date: 5/6/04
SPX1432 1.24V Precision Adjustable Shunt Regulator
© Copyright 2004 Sipex Corporation
4
TYPICAL PERFORMANCE CHARACTERISTICS: Continued
IKA = 0 to 300µA.
IKA = 0 to 1mA.
IKA = 0 to 10mA.
IKA = 0 to 50mA.
IKA = 0 to 80mA
IKA = 0 to 100mA
Date: 5/6/04
SPX1432 1.24V Precision Adjustable Shunt Regulator
© Copyright 2004 Sipex Corporation
5
PACKAGE: 3 PIN SOT23
D
b
3
B
B
SEE VIEW C
E1
E
1
2
e
Gauge Plane
e1
L2
L
L1
VIEW C
3 PIN SOT-23
JEDEC TO-236
(AB) Variation
Dimensions in (mm)
MIN NOM MAX
A
A2
A
A
0.89
0.01
-
1.12
0.10
Seating Plane
A1
A2
b
-
C
A
A1
SIDE VIEW
0.88 .95 1.02
0.30
0.08
-
0.50
0.20
c
-
D
2.80 2.90 3.04
0.95 BSC
b
e
WITH PLATING
1.90 BSC
e1
E
2.10
-
2.64
c
1.20 1.30 1.40
E1
L
0.30
0º
0.45
0.54 REF
-
0.60
8º
L1
Ø
BASE METAL
3 PIN SOT-23
Date: 5/6/04
SPX1432 1.24V Precision Adjustable Shunt Regulator
© Copyright 2004 Sipex Corporation
6
ORDERING INFORMATION
PART NUMBER
ACC
OUTPUT VOLTAGE
TOP MARK
PACKAGES
SPX1432AM ............ 0.5% .................. 1.24V .......................... W1 ............ 3-Pin SOT-23
SPX1432AM/TR ...... 0.5% .................. 1.24V .......................... W1 ............ 3-Pin SOT-23
SPX1432M............... 1.0% .................. 1.24V ........................... F2 ............ 3-Pin SOT-23
SPX1432M/TR......... 1.0% .................. 1.24V ........................... F2 ............ 3-Pin SOT-23
/TR = Tape and Reel
Pack quantity is 2500 for SOT-23.
Corporation
ANALOGEXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
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 herein; neither does it convey any license under its patent rights nor the rights of others.
Date: 5/6/04
SPX1432 1.24V Precision Adjustable Shunt Regulator
© Copyright 2004 Sipex Corporation
7
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