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SPX2931 데이터시트 PDF




Sipex Corporation에서 제조한 전자 부품 SPX2931은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 SPX2931 기능
기능 100mA Low Dropout Voltage Regulator
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SPX2931 데이터시트, 핀배열, 회로
® SPX2931
100mA Low Dropout Voltage Regulator
FEATURES
3.3V and 3.5V Versions
Output Current in Excess of 100 mA
Input-Output Differential is 0.3 at 100mA
Mirror-Image Insertion Protection
Internal Thermal Protection
Available in TO-92 and SOT-89 Packages
Improved Version of the Industry
Standard LM2931
Reverse Battery, Internal Short Circuit,
20V Reverse Transient and 60V Load
Dump Protection
Availiable with either 2% or 3% Output
Accurancy at 25°C
TO-92 (N)
1 23
SOT-89 (M1)
VOUT
GND
VIN
123
VIN GND VOUT
Bottom View
Top View
Now Available in Lead Free Packaging
APPLICATIONS
Portable Instrumentation
Cordless Telephones
Radio Control Systems
DESCRIPTION
The SPX2931 is a low power, positive voltage regulator. This device is an excellent choice for
use in battery-powered applications such as cordless telephones, radio control systems, and
portable computers. The SPX2931 features offers very low quiescent currents (0.4 mA), and very
low drop output voltage (50 mV at light load and 300 mV at 100 mA). The SPX2931 is offered
in a 3-pin TO-92, and SOT-89 package.
TYPICAL APPLICATIONS CIRCUIT
VIN
1µF C 1
SPX2931
Gnd
VOUT
100µF,
ESR 0.05 to 0.6
ohms
Date: 05/25/04
SPX2931 100mA Low Dropout Voltage Regulator
1
© Copyright 2004 Sipex Corporation




SPX2931 pdf, 반도체, 판매, 대치품
2.0
1.6
1.2
0.8
0.4
0.0
0 10 20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE (ºC)
Figure 7. Maximum Power Dissipation (SOT89)
TYPICAL PERFORMANCE CHARACTERISTICS
1.0
0.9
0.8
0.7
0.6 0.125" LEAD LENGTH
FROM PC BOARD
0.5
0.4
0.4" LENGTH
0.3 FROM PC BOARD
0.2
0.1
0
0 10 20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE (ºC)
Figure 8. Maximum Power Dissipation (TO-92)
10 LM2931-
5.0
IO = 10mA
1
0.1
0.01
0
30 60 90
FREQUENCY (Hz)
120 150
Figure 9. Output Impedance
OPERATION DURING LOAD DUMP
70
60
50
40
30
20
10
0 ~~
6
C O = 100µF
RL = 500
4
2
0
-2
-100 0
100 200 300 400
TIME (ms)
~~
500
Figure 10. Operation During Load Dump
APPLICATION INFORMATION
The SPX2931 requires an output capacitor for
device stability. The value required varies greatly
depending upon the application circuit and other
factors. The high frequency characteristics of
electrolytic capacitors depend greatly on the
type and also on the manufacturer. Sometimes
bench testing is the only means to determine the
proper capacitor type and value. The high qual-
ity 100°F aluminum electrolytic covers all gen-
eral application circuits, this stability can be
obtained with a tantalum electrolytic value of
47°F.
Another critical point of electrolytic character-
istics is its performance over temperature. The
SPX2931 is designed to operate starting at -
40°C which may not be true in the case of
electrolytic. Higher temperatures generally no
problem. The electrolytic. type in aluminum
will freeze around -30°C. This could cause an
oscillation at output of regulator. At a lower
temperature requirement by many applications
the capacitor should maintain its performance.
So as a result, for an application which regulator
junction temperature does not exceed 25°C, the
output capacitor can be reduced by the factor of
two over the value needed for the entire tem-
perature range.
Date: 05/25/04
SPX2931 100mA Low Dropout Voltage Regulator
4
© Copyright 2004 Sipex Corporation

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SPX2931 전자부품, 판매, 대치품
PACKAGE: 3PIN SOT-89
D
D1
3
Ø1.0
E
H
1
e
e1
2
L
5º(2x)
3 PIN SOT-89
A
b
L
b1
C
D
D1
H
E
e
e1
Dimensions in (mm)
MIN NOM MAX
1.40 1.50 1.60
0.36 0.42 0.48
0.80
- 1.20
0.41 0.47 0.53
0.38
4.40
0.40
4.50
0.43
4.60
1.40 1.60 1.75
3.94 -
2.40 2.50
4.25
2.60
1.45 1.50 1.55
2.90 3.00 3.10
C
8º(2x)
Ro.15
b b1 b
Date: 05/25/04
3 PIN SOT-89
SPX2931 100mA Low Dropout Voltage Regulator
7
© Copyright 2004 Sipex Corporation

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