SPX3940AM3-L-1-8/TR Exar Corporation, SPX3940AM3-L-1-8/TR Datasheet - Page 5

• 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

Figure 12. Ground Current vs Temperature at I
Figure 16. Enable Current vs Temperature for V
Date: 4/14/06 Rev A
Figure 14. Dropout Voltage vs Temperature at
I
LOAD
350
330
310
290
270
250
230
210
190
170
150
= 750mA
52.0
50.0
48.0
46.0
44.0
42.0
40.0
38.0
36.0
-40
35
30
25
20
15
10
5
0
-40
-40
-20
-20
-20
0
0
0
20
20
Temperature (°C)
20
Temperature (°C)
40
40
40
60
60
60
80
80
80
3.3V Device
V
IL = 750mA
CL = 10µF
3.3V Device
IL = 750mA
CL = 10µF
3.3V Device
V
IL=1.5A
CL = 10µF
IN
IN
= 3.2V
100
= 4.3V
100
LOAD
SPX3940 1A Low Dropout Voltage Regulator
100
EN
= 16V
120
= 1.5A
120
120
TYPICAL PERFORMANCE CHARACTERISTICS
5
Figure 13. Ground Current vs Temperature in Dropout
at I
Figure 17. Enable Threshold vs Temperature
Figure 15. Dropout Voltage vs Temperature at
I
LOAD
LOAD
= 1.5mA
100
2.00
1.90
1.80
1.70
1.60
1.50
1.40
1.30
1.20
1.10
1.00
500
480
460
440
420
400
380
360
340
320
95
90
85
80
75
70
=1.5A
-40
-40
-40
-20
-20
-20
0
0
0
20
20
20
Temperature (°C)
Temperature (°C)
© Copyright 2006 Sipex Corporation
Temperature (°C)
40
40
40
60
60
60
80
80
80
3.3V Device
V
IL = 750mA
CL = 10µF
3.3V Device
IL = 1.5A
CL = 10µF
IN
3.3V Device
V
IL = 1.5A
CL = 10µF
IN
100
= 3.2V
100
= 3.2V
100
120
120
120