SPX2937M3-10 데이터 시트보기 (PDF) - Signal Processing Technologies
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SPX2937M3-10 Datasheet PDF : 4 Pages
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SPX2937
ELECTRICAL CHARACTERISTICS at VIN = VO + 5V, IO = 500mA, CO = 10 µF, unless otherwise specified. Limits in
Boldface type apply over the entire operating temperature range. All other specifications are TA = 25°C.
PARAMETER
CONDITIONS
SPX2937-10
SPX2937-12
SPX2937-15
UNITS
Min Typ Max
Min Typ Max
Min Typ Max
Output Voltage
5mA ≤IO ≤500mA
9.70 10.0 10.3 11.64 12.0 12.36 14.55 15.0 15.45
V
9.50
10.5 11.40
12.60 14.25
15.75
Line Regulation
Load Regulation
VO+2V≤VIN≤ 20V
IO=5mA
5mA≤IO≤ 500mA
30 100
10 100
36 120
12 120
45
150
mV
15
150
mV
Dropout Voltage
Quiescent Current
Output Noise
IL = 50 mA
IL = 500mA
VO + 2V ≤VIN≤20V
IO = 5mA
VIN=VO+5V
IO=500mA
10Hz- 100kHz
0.5 250
1.0
2
10
10
20
300
110 250
0.5
1.0
2
10
10
20
360
110 250
0.5
1.0
2
10
10
20
450
Voltage
IO = 5mA
Long Term
51 63
44
56
Stability
45
Short Circuit
1.0 0.6
1.0
0.6
1.0
0.6
Current
Maximum Line
Transient
RO = 100Ω
T ≤ 100ms
60 75
60 75
60 75
Reverse Polarity
RO = 100Ω
DC Input Voltage
-15 -30
-15 -30
-15 -30
-15 -30
-15 -30
-15 -30
Reverse Polarity
Transient Input
Voltage
RO = 100Ω
T ≤ 100ms
-50 -75
-50 -75
-50 -75
mV
V
mA
mA
µVRMS
mV/ 1000Hr
A
V
V
V
APPLICATION HINTS
EXTERNAL CAPACITORS
The stability of the SPX2937 requires a 10µF or greater capacitor between output and ground. Oscillation could occur without this capacitor. Most
types of tantalum or aluminum electrolytic works fine here. For operations below -25°C solid tantalum is recommended since the many aluminum
types have electrolytes that freeze at about -30°C. The ESR of about 5Ω or less and resonant frequency above 500 kHz are the most important
parameters in the value of the capacitor. The capacitor value may be increased without limit.
At lower values of output current, less output capacitance is required for stability. For the currents below 10mA the value of the capacitor can be
reduced to 22µF and 0.15µF for 1mA.
Rev. 10/30/00
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