SPX3940AM3-L-5-0 Exar Corporation, SPX3940AM3-L-5-0 Datasheet - Page 3

• Manufacturer Part Number: SPX3940AM3-L-5-0
• Description: IC REG LDO 5.0V 1A SOT223-3
• Manufacturer: Exar Corporation
• Series: -r

Specifications of SPX3940AM3-L-5-0

• Package / Case: TO-261-4, TO-261AA, SOT-223-4
• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: Up to 16V
• Voltage - Dropout (typical): 0.28V @ 1A
• Number Of Regulators: 1
• Current - Output: 1A
• Current - Limit (min): 1.5A
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Number Of Outputs: 1
• Polarity: Positive, Negative, Reverse
• Input Voltage Max: 16 V
• Output Voltage: 5 V
• Output Type: Fixed
• Dropout Voltage (max): 280 mV
• Output Current: 1 A
• Load Regulation: 1.5 %
• Voltage Regulation Accuracy: 1 %
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Date: 4/14/06 Rev A
Figure 4. Ground Current vs Load Current
Figure 2. Line Regulation
3.320
3.315
3.310
3.305
3.300
3.295
3.290
3.285
3.280
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
0
4
IN
0.25
6
Ibias
0.5
8
V
Reference
IN
0.75
10
(V)
1.240V
12
1
3.3V Device
IL = 10mA
CL = 10µF
+
-
3.3V Device
V
CL = 10µF
1.25
14
IN
SPX3940 1A Low Dropout Voltage Regulator
= 4.3V
16
TYPICAL PERFORMANCE CHARACTERISTICS
Shutdown
Thermal
1.5
3
Figure 5. Ground Current vs Input Voltage
Figure 3. Load Regulation
100
3.310
3.305
3.300
3.295
3.290
3.285
3.280
95
90
85
80
75
70
-40
28V
O.V
I
LIMIT
0
-20
0.25
0
20
0.5
V
© Copyright 2006 Sipex Corporation
40
BLOCK DIAGRAM
R1
R2
IN
(V)
0.75
60
IL (A)
OUT
GND
1
80
3.3V Device
IL = 10 mA
CL = 10µF
3.3V Device
IL=4.3mA
CL=10µF
100
1.25
120
1.5