spx3940am3-l-5-0-tr Exar Corporation, spx3940am3-l-5-0-tr Datasheet - Page 2

• Manufacturer Part Number: spx3940am3-l-5-0-tr
• Description: 1.0a Low Dropout Voltage Regulator
• Manufacturer: Exar Corporation

At V
The Boldface applies over the junction temperature range. Adjustable versions are set at 5.0V.
Date: 4/14/06 Rev A
NOTES:
Note 1: Dropout voltage is defined as the input to output differential when the output voltage drops to 99% of its normal value.
Note 2: V
Note 3: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current to the ground current.
Note 4: Thermal regulation is defined as the change in the output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation effects.
Note 5: Maximum positive supply voltage of 20V must be of limited duration (<100ms) and duty cycle (<1%). The maximum continuous supply voltage is 16V.
ABSOLUTE MAXIMUM RATINGS
Lead Temperature (soldering, 5 seconds) ................................. 260°C
Storage Temperature Range ..................................... -65°C to +150°C
Operating Junction Temperature Range ................... -40°C to +125°C
Input Voltage (Note 5) ................................................................... 16V
2.5V Version
PARAMETER
1.8V Version
Output Voltage
Output Voltage
3.3V Version
Output Voltage
5.0V Version
Output Voltage
All Voltage Options
Line Regulation
Load Regulation
∆V
∆T
Dropout Voltage (Note 1)
(except 1.8V version)
Ground Current (Note 3)
I
Current at Dropout
Current Limit
Output Noise Voltage
(10Hz to 100kHz)
I
Thermal Resistance
GNDDO
L
=100mA
IN
=V
IN
OUT
Ground Pin
=V
OUT (NOMINAL)
+ 1V and I
OUT
+ 1V. For example, use V
= 10 mA, C
CONDITIONS
I
10mA≤I
I
10mA≤I
I
10mA≤I
I
10mA≤I
I
V
Output Voltage
Temperature Coef.
I
I
I
I
V
I
V
C
C
TO-220 Junction to Case, at Tab
TO-220 Junction to Ambient
TO-263 Junction to Case, at Tab
TO-263 Junction to Ambient
SOT-223 Junction to Case, at Tab
SOT-223 Junction to Ambient
OUT
OUT
OUT
OUT
O
O
O
O
O
OUT
IN
IN
OUT
L
L
=10mA, (V
=100mA
=750mA, V
=1A
=1A
= 10µF
=33µF
=V
=0.1V less than specified V
= 10mA
= 10mA
= 10mA
= 10mA
= 10mA
=0V (Note 2)
OUT
OUT
OUT
OUT
OUT
+1V, 10mA≤I
IN
≤1A, 6V≤V
≤1A, 6V≤V
≤1A, 6V≤V
≤1A, 6V≤V
OUT
= 6.8 µF, C
IN
IN
=V
=4.3V for a 3.3V regulator. Employ pulse-testing procedures to minimize temperature rise.
+1V)≤V
OUT
SPX3940 1A Low Dropout Voltage Regulator
, + 1V
IN
IN
IN
IN
OUT
≤16V
IN
≤16V
≤16V
≤16V
≤16V
≤1A
OUT
= 10µF; T
OUT
2
29.4
31.4
62.3
280
400
260
1.8
1.8
2.5
2.5
3.3
3.3
5.0
5.0
0.2
0.3
1.2
2.2
20
70
12
18
15
TYP
3
3
A
= 25°C, unless otherwise specified.
ELECTRICAL CHARACTERISTICS
SPX3940A (1%)
1.782
1.755
2.475
2.437
3.267
3.217
4.950
4.875
MIN
1.5
1.818
1.845
2.525
2.563
3.333
3.383
5.050
5.125
MAX
100
200
550
1.0
1.5
25
© Copyright 2006 Sipex Corporation
1.764
1.737
2.450
2.412
3.234
3.184
4.900
4.825
MIN
SP3940 (2%)
1.5
1.836
1.863
2.550
2.588
3.366
3.416
5.100
5.175
MAX
100
200
550
1.0
1.5
25
ppm/°C
UNITS
µV
°C/W
°C/W
°C/W
mV
mA
mA
%
%
V
V
V
V
A
RMS