SPX1432 반도체 회로 부품 판매점
1.24V Precision Adjustable Shunt Regulator
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 Sipex |
® SPX1432
1.24V Precision Adjustable Shunt Regulator
FEATURES
■ Reference Voltage: 1.24V
■ 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
■ Upgrade to LMV431, TLV431, SC431L
ANODE
3
3
SPX1432
12
1
REF
2
CATHODE
Now Available in Lead Free Packaging
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)
Date: 5/6/04
Reference
(R)
1.24V
+
-
Anode (A)
SPX1432 1.24V Precision Adjustable Shunt Regulator
1
© Copyright 2004 Sipex Corporation
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.
RECOMMENDED CONDITIONS
TYPICAL THERMAL RESISTANCES
PARAMETER SYMBOL
Cathode Voltage
Cathode Current
VKA
IK
RATING
VREF to 20
10
UNIT
V
mA
PACKAGE
SOT-23
θJA θJC
575°C/W 150°C/W
TYPICAL
DERATING
1.7 mW/°C
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
Temperature Deviation
Line Regulation
Load Regulation
Reference Input Current
Reference Input Current
Temperature Coefficient
Minimim Cathode
Current for Regulation
VREF
VREF
VREF
VREF
IREF
IREF
IK(MIN)
2 TJ = 25°C
2 0 < TJ < 105°C
3 VKA = 1.25V to 15V
2 IK = 100µA to 100mA
3 TJ = 25°C, R1 = 10KΩ, R2 = ∞
3 0 < TJ < 105°C,
R1 = 10KΩ, R2 = ∞
2 TJ = 25°C
1.234
1.240
6
15
10
0.1
0.05
1.246
12
37
30
0.3
0.2
60 80
V
mV
mV
mV
µA
µA
µA
Off State Leakage
IK(MIN)
4 VREF = 0V, VKA = 18V, TJ = 25°C
0.01 500
nA
PARAMETER
Accuracy 1.0%
Output Voltage
Temperature Deviation
Line Regulation
Load Regulation
Reference Input Current
Reference Input Current
Temperature Coefficient
Minimim Cathode
Current for Regulation
Off State Leakage
SYMBOL FIGURE CONDITIONS
VREF
VREF
VREF
VREF
IREF
IREF
IK(MIN)
2 TJ = 25°C
2 0 < TJ < 105°C
3 VKA = 1.25V to 15V
2 IK = 100µA to 100mA
3 TJ = 25°C, R1 = 10KΩ, R2 = ∞
3 0 < TJ < 105°C,
R1 = 10KΩ, R2 = ∞
2 TJ = 25°C
MIN
1.228
TYP
SPX1432
1.240
9
15
10
0.1
0.05
MAX
1.252
18
37
30
0.5
0.4
UNITS
V
mV
mV
mV
µA
µA
60 100 µA
IK(MIN)
4 VREF = 0V, VKA = 18V, TJ = 25°C
0.01 500
nA
Date: 5/6/04
SPX1432 1.24V Precision Adjustable Shunt Regulator
2
© Copyright 2004 Sipex Corporation
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SPX1432 regulator
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
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전력반도체 문의 : 010-3582-2743
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