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SPX2931CM1-L-3.0 [EXAR]

Fixed Positive LDO Regulator, 3V, 0.6V Dropout, PSSO3, SOT-89, 3 PIN;
SPX2931CM1-L-3.0
型号： SPX2931CM1-L-3.0
厂家： EXAR CORPORATION    EXAR CORPORATION
描述：

Fixed Positive LDO Regulator, 3V, 0.6V Dropout, PSSO3, SOT-89, 3 PIN

输出元件 调节器
文件： 总7页 (文件大小：149K)
中文：  中文翻译
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SPX2931  
100mA Low Dropout Voltage Regulator  
FEATURES  
•
•
•
•
•
3.5V, 3.3V, and 3.0V Versions are Available  
•
•
•
•
Reverse Battery Protection  
Short Circuit Protection  
Output Current in Excess of 100 mA  
Input-Output Differential is Less Than 0.6V  
Mirror-Image Insertion Protection  
60V Load Dump Protection  
-20V Reverse Transient Protection  
Internal Thermal Overload Protection  
APPLICATION  
•
•
•
Available in TO-220, TO-92, SOT-89, and SO-8 Package Types  
Available as Adjustable with TTL Compatible Switch  
Similar Improved to Industry Standard LM2931  
•
•
•
Portable Instrumentation  
Radio Control Systems  
Cordless Telephones  
PRODUCT DESCRIPTION  
The SPX2931 is a low power 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 (typ. 50 mV at light load and 300 mV at 100 mA). Other features include the logic-  
compatible On/Off input which enables the regulator to be switched on and off. The SPX2931 is offered in a 3-pin TO-92/TO-220  
package and SOT-89/SO-8 package.  
PIN CONNECTIONS  
TO-92 (N)  
SOT-89 (M1)  
SPX2931  
8-Pin Surface Mount (S)  
Fixed Output  
TO-220-3 (U)  
Fixed  
1
2
3
VOUT  
GND  
GND  
BYP  
1
2
3
4
8
7
6
5
VIN  
1
GND  
GND  
3
2
SPX2931  
Top View  
VOUT  
VIN  
SPX2931  
GND  
VIN  
GND VOUT  
1
2
3
1. V  
ON/OFF  
IN  
2. GND  
3. VOUT  
Top View  
Bottom View  
Front View  
Rev. 10/24/00  
SPX2931  
ABSOLUTE MAXIMUM RATINGS  
Power Dissipation...........................................Internally limited  
Lead Temp. (soldering, 5 Seconds)................................. 260°C  
Storage Temperature Range ........................... -65°C to +150°C  
Operating Junction Temperature Range ........... -40°C to +85°C  
Input Supply Voltage.............................................-0.3 to +26V  
ESD Rating.........................................................................2KV  
ELECTRICAL CHARACTERISTICS at V = 14V, T = 25°C, I = 10 mA, C2 = 100 F, unless otherwise specified.  
µ
S
A
O
( Note 1)  
Parameter  
Conditions  
SPX2931A  
Typ  
SPX2931  
Typ  
Units  
Min  
Max  
Min  
Max  
3.0 Volt Version  
SPX2931A-3  
SPX2931-3  
Output Voltage  
2.94  
3.00  
3.06  
2.91  
3.00  
3.09  
V
V
6V<VIN< 26V,  
IO = 100 mA Over Temp.  
3.00  
3.00  
SPX2931-3.3  
2.88  
3.12  
2.85  
3.15  
3.3 Volt Version  
SPX2931A-3.3  
Output Voltage  
3.23  
3.30  
3.36  
3.20  
3.30  
3.39  
V
V
6V < VIN< 26V,  
IO = 100 mA Over Temp.  
3.30  
3.30  
SPX2931-5  
3.20  
3.39  
3.16  
3.43  
5 Volt Version  
SPX2931A-5  
Output Voltage  
4.81  
5.00  
5.19  
4.75  
5.00  
5.25  
V
V
6V <VIN< 26V,  
IO =100 mA Over Temp.  
4.75  
5.25  
4.5  
5.5  
All Voltage Options  
Long Term Stability  
Line Regulation  
20  
20  
4.0  
mV/1000  
mV  
9V < VIN < 16V  
2.0  
4.0  
14  
10  
30  
50  
0.2  
0.1  
0.6  
1.0  
30  
50  
0.2  
0.1  
0.6  
1.0  
6V < VIN < 26V,  
5 mA < IO < 100 mA  
Load Regulation  
Dropout Voltage  
14  
mV  
IO=10 mA  
0.05  
0.07  
0.3  
0.05  
0.07  
0.3  
V
IO=50 mA  
V
IO=100 mA  
V
Quiescent Current  
IO < 10 mA, 6V < VIN < 26V  
-40°C < Tj < 85°C  
IO = 100 mA, VIN = 14V,  
TJ = 25°C  
0.4  
0.4  
mA  
15  
15  
mA  
Maximum Operational Input  
Voltage  
Maximum Line Transient  
26  
60  
33  
70  
26  
50  
33  
70  
V
V
RL= 500Ω, VO<5.5V, 100ms  
VO > -0.3V, RL = 500Ω  
Reverse Polarity Input  
-15  
-50  
-30  
-80  
-15  
-50  
30  
V
V
Voltage, DC  
Reverse Polarity Input  
Voltage, Transient  
1% Duty Cycle, τ < 100ms,  
RL = 500Ω  
10Hz-100kHz, COUT=100µF  
-80  
Output Noise Voltage  
Ripple Rejection  
500  
80  
500  
80  
µVrms  
dB  
FO = 120Hz  
Note 1: See TYPICAL APPLICATIONS notes to ensure constant junction temperature, low duty cycle pulse testing used.  
Note 2: All limits are at 25°C or over the full operating temperature junction range of -40°C to +85°C.  
Note 3: The maximum power dissipation is a function of maximum junction temperature, total thermal resistance, and ambient temperature.  
Note 4: Human body model, 100 µF discharged through 1.5 KΩ.  
Rev. 10/24/00  
SPX2931  
factor of two over the value needed for the entire  
temperature range.  
Application Hints  
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 only bench  
testing is the only means to determine the proper capacitor  
Other points with linear regulators is that the twitch higher  
output current stability decreases. In most applications the  
SPX2931 is operating at few milliamps. In these  
applications the output capacitance can be further reduced.  
For example, when the regulator is running at 10mA output  
current the output capacitance value is half compared to the  
same regulator that is running at 100 mA.  
type and value.  
The high quality 100 µF aluminum  
electrolytic covers all general application circuits, this stability  
can be obtained with a tantalum electrolytic value of 47 µF.  
With the SPX2931 adjustable regulator, the minimum value  
of output capacitance is a function of the output voltage.  
The value decreases with higher output voltages, since the  
internal loop gain is reduced.  
Another critical point of electrolytic characteristics 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  
The worst case occurs at the lower temperature and  
maximum operating currents, the entire circuit and the  
electrolytic, should be cooled down to the minimum  
temperature. The minimum of 0.6 volts required at the input  
of regulator above the output to keep the power dissipation  
and die heating to its minimum. After the value for the  
capacitor has been determined for actual use, the value  
should be doubled.  
Rev. 10/24/00  
SPX2931  
TYPICAL CHARACTERISTICS  
QUIESCENT CURRENT  
VIN = 14V  
REFERENCE VOLTAGE  
LM2931CT ADJUSTABLE  
QUIESCENT CURRENT  
25  
30  
25  
20  
15  
10  
1.30  
1.28  
1.26  
20  
15  
1.24  
1.22  
1.20  
1.18  
1.16  
10  
~
~
~
~
3
2
IO = 50mA  
IO = 0mA  
1.14  
1.12  
1.10  
5
0
1
0
-40  
0
40  
80  
120  
0
30  
60  
90  
0
3
6
9
12 15 18 21 24  
JUNCTION TEMPERATURE (ºC)  
OUTPUT CURRENT (mA)  
OUTPUT VOLTAGE (V)  
PEAK OUTPUT CURRENT  
DROPOUT VOLTAGE  
DROPOUT VOLTAGE  
800  
500  
0.6  
0.5  
0.6  
0.5  
TJ = 25ºC  
0.4  
0.3  
IO = 100mA  
0.4  
0.3  
0.2  
400  
300  
200  
100  
TJ = 85ºC  
TJ = -40ºC  
IO = 50mA  
IO = 10mA  
0.2  
0.1  
0.1  
0
0
0
0
40  
80  
120  
0
50  
100  
0
10  
20  
30  
JUNCTION TEMPERATURE (ºC)  
OUTPUT CURRENT (mA)  
INPUT VOLTAGE (V)  
MAXIMUM POWER DISSIPATION (TO-220)  
MAXIMUM POWER DISSIPATION (TO-92)  
LOW VOLTAGE BEHAVIOR  
6.0  
5.0  
4.0  
22  
20  
18  
16  
14  
12  
1.0  
INFINITE HEAT SINK  
LM2931 5.0  
IO = 100 mA  
0.9  
0.8  
0.7  
0.125" LEAD LENGTH  
FROM PC BOARD  
0.6  
0.5  
10 ºC/W HEAT SINK  
NO HEAT SINK  
10  
3.0  
2.0  
0.4  
0.3  
8
6
0.4" LENGTH  
FROMPC BOARD  
0.2  
0.1  
4
2
0
1.0  
0
2.0  
3.0  
4.0  
5.0  
6.0  
0
10 20 30 40 50 60 70 80 90  
0
10 20 30 40 50 60 70 80 90 100  
INPUT VOLTAGE (V)  
AMBIENT TEMPERATURE (ºC)  
AMBIENT TEMPERATURE (ºC)  
MAXIMUM POWER DISSIPATION (SO-  
8)  
MAXIMUM POWER DISSIPATION  
OPERATION DURING LOAD DUMP  
1.0  
0.9  
0.8  
0.7  
0.6  
0.5  
0.4  
10  
70  
60  
50  
40  
30  
20  
LM2931-  
5.0  
I
O = 10mA  
1
10  
0
~
~
~
~
CO = 100µF  
L = 500W  
R
6
4
2
0
0.3  
0.2  
0.1  
0
0.1  
0.01  
-2  
-100  
0
5
10  
15  
20  
25  
30  
0
100  
300 400  
500  
200  
0
30  
60  
90  
120  
150  
AMBIENT TEMPERATURE (ºC)  
FREQUENCY (Hz)  
TIME (ms)  
Rev. 10/24/00  
SPX2931  
TYPICAL APPLICATIONS  
SPX2931 Fixed Output  
SPX2931  
SCHEMATIC DIAGRAM  
Rev. 10/24/00  
SPX2931  
ORDERING INFORMATION  
Ordering No.  
SPX2931N  
Precision  
3%  
3%  
3%  
3%  
2%  
2%  
2%  
2%  
5%  
5%  
5%  
5%  
3%  
3%  
3%  
3%  
2%  
2%  
2%  
2%  
5%  
5%  
5%  
5%  
3%  
3%  
3%  
3%  
2%  
2%  
2%  
2%  
5%  
5%  
5%  
5%  
3%  
3%  
3%  
3%  
2%  
2%  
2%  
2%  
5%  
5%  
5%  
5%  
Output Voltage  
Adj  
Packages  
3 Lead TO-92  
3 Lead TO-92  
3 Lead TO-92  
3 Lead TO-92  
3 Lead TO-92  
3 Lead TO-92  
3 Lead TO-92  
3 Lead TO-92  
3 Lead TO-92  
3 Lead TO-92  
3 Lead TO-92  
3 Lead TO-92  
8 Lead SOIC  
3.0V  
3.3V  
3.5V  
Adj  
SPX2931N-3.0  
SPX2931N-3.3  
SPX2931N-3.5  
SPX2931AN  
3.0V  
3.3V  
3.5V  
Adj  
SPX2931AN-3.0  
SPX2931AN-3.3  
SPX2931AN-3.5  
SPX2931CN  
3.0V  
3.3V  
3.5V  
Adj  
SPX2931CN-3.0  
SPX2931CN-3.3  
SPX2931CN-3.5  
SPX2931S  
3.0V  
3.3V  
3.5V  
Adj  
8 Lead SOIC  
SPX2931S-3.0  
SPX2931S-3.3  
SPX2931S-3.5  
SPX2391AS  
8 Lead SOIC  
8 Lead SOIC  
8 Lead SOIC  
3.0V  
3.3V  
3.5V  
Adj  
8 Lead SOIC  
SPX2391AS-3.0  
SPX2391AS-3.3  
SPX2391AS-3.5  
SPX2931CS  
8 Lead SOIC  
8 Lead SOIC  
8 Lead SOIC  
3.0V  
3.3V  
3.5V  
Adj  
8 Lead SOIC  
SPX2931CS-3.0  
SPX2931CS-3.3  
SPX2931CS-3.5  
SPX2931U  
8 Lead SOIC  
8 Lead SOIC  
3 Lead TO-220  
3 Lead TO-220  
3 Lead TO-220  
3 Lead TO-220  
3 Lead TO-220  
3 Lead TO-220  
3 Lead TO-220  
3 Lead TO-220  
3 Lead TO-220  
3 Lead TO-220  
3 Lead TO-220  
3 Lead TO-220  
3 Lead SOT-89  
3 Lead SOT-89  
3 Lead SOT-89  
3 Lead SOT-89  
3 Lead SOT-89  
3 Lead SOT-89  
3 Lead SOT-89  
3 Lead SOT-89  
3 Lead SOT-89  
3 Lead SOT-89  
3 Lead SOT-89  
3 Lead SOT-89  
3.0V  
3.3V  
3.5V  
Adj  
SPX2931U-3.0  
SPX2931U-3.3  
SPX2931U-3.5  
SPX2931AU  
3.0V  
3.3V  
3.5V  
Adj  
SPX2931AU-3.0  
SPX2931AU-3.3  
SPX2931AU-3.5  
SPX2931CU  
3.0V  
3.3V  
3.5V  
Adj  
SPX2931CU-3.0  
SPX2931CU-3.3  
SPX2931CU-3.5  
SPX2931M1  
3.0V  
3.3V  
3.5V  
Adj  
SPX2931M1-3.0  
SPX2931M1-3.3  
SPX2931M1-3.5  
SPX2931AM1  
SPX2931AM1-3.0  
SPX2931AM1-3.3  
SPX2931AM1-3.5  
SPX2931CM1  
SPX2931CM1-3.0  
SPX2931CM1-3.3  
SPX2931CM1-3.5  
3.0V  
3.3V  
3.5V  
Adj  
3.0V  
3.3V  
3.5V  
Rev. 10/24/00  
SPX2931  
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. 10/24/00  

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