SPX3940AM3-L-1-8/TR Exar Corporation, SPX3940AM3-L-1-8/TR Datasheet - Page 4

• Manufacturer Part Number: SPX3940AM3-L-1-8/TR
• Description: 1.0A Low Dropout Voltage Regulator
• Manufacturer: Exar Corporation

Specifications of SPX3940AM3-L-1-8/TR

• Regulator Topology: Positive Fixed
• Voltage - Output: 1.8V
• Voltage - Input: 3.1 V ~ 16 V
• Number Of Regulators: 1
• Current - Output: 1A
• Current - Limit (min): 1.5A
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: TO-261-4, TO-261AA, SOT-223-4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

I
Date: 4/14/06 Rev A
I
Figure 10. Ground Current vs Temperature at
Figure 6. Ground Current vs Load Current in Dropout
Figure 8. Ground Current vs Temperature at
LOAD
LOAD
=500mA
7.00
6.80
6.60
6.40
6.20
6.00
5.80
5.60
5.40
5.20
5.00
280
270
260
250
240
230
220
210
200
190
180
= 10mA
100
90
80
70
60
50
40
30
20
10
-40
-40
0
0
-20
-20
0.25
0
0
0.5
20
20
Temperature (°C)
Temperature (°C)
IL(A)
40
40
0.75
60
60
1
80
80
3.3V Device
V
IL = 10mA
CL = 10µF
IN
3.3 Device
V
CL = 10µF
= 4.3V
3.3V Device
V
IL = 500mA
CL = 10µF
IN
IN
1.25
100
100
= 3.2V
= 4.3V
SPX3940 1A Low Dropout Voltage Regulator
120
120
1.5
TYPICAL PERFORMANCE CHARACTERISTICS
4
Figure 9. Output Voltage vs Temperature at
I
Figure 11. Ground Current vs Temperature in Dropout
at I
LOAD
LOAD
600
500
400
300
200
100
3.320
3.310
3.300
3.290
3.280
3.270
3.260
3.250
3.240
3.230
3.220
=10mA
30
29
28
27
26
25
24
23
22
21
20
0
-40
-40
=750mA
0
Figure 7. Dropout Voltage vs Load Current
-20
-20
0.25
0
0
0.5
20
20
Temperature (°C)
Temperature (°C)
© Copyright 2006 Sipex Corporation
IL (A)
0.75
40
40
60
60
1
80
80
3.3V Device
CL = 10µF
3.3V Device
V
IL = 10mA
CL = 10µF
IN
3.3V Device
V
IL = 750mA
CL = 10µF
1.25
= 4.3V
IN
100
100
= 3.2V
120
120
1.5