SPX1587T-L-1-5 Exar Corporation, SPX1587T-L-1-5 Datasheet - Page 3

• Manufacturer Part Number: SPX1587T-L-1-5
• Description: 3A Low Dropout Voltage Regulator
• Manufacturer: Exar Corporation

Specifications of SPX1587T-L-1-5

• Regulator Topology: Positive Fixed
• Voltage - Output: 1.5V
• Voltage - Input: Up to 10V
• Voltage - Dropout (typical): 1.1V @ 3A
• Number Of Regulators: 1
• Current - Output: 3A
• Current - Limit (min): 3.2A
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: TO-263-4, D²Pak (3 leads + Tab), TO-263AA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Note 1: Output temperature coefficient is defined as the worst case voltage change divided by the total temperature range
Note 2: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its
nominal value measured at 1V differential at very low values of programmed output voltage, the minimum input supply
voltage of 2V (2.3V over temperature) must be taken into account.
Note 3: Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is
applied. Excluding load or line regulation effect.
Note 4: Adjustable Version Only.
BLOCK DIAGRAM
© 2010 Exar Corporation
Dropout Voltage (note 2)
Minimum Load Current
(note 4)
Quiescent Current
Adjust Pin Current
Current Limit
Thermal Regulation
Ripple Rejection
Long Term Stability
RMS Output Noise
Parameter
Min.
3.2
60
Typ.
1.00
1.05
1.10
0.01
0.03
0.03
50
75
Fig. 2: SPX1587 Block Diagram
4
4
5
Max.
120
1.2
0.1
10
10
3/11
Units
%/W
3
3
mA
mA
µA
µA
dB
%
%
V
A
A
A
L
L
o
o
•
w
w
I
I
I
Fixed Voltage Versions
V
25°C, 30ms pulse
F
125°C, 1000 hours
% of V
OUT
OUT
OUT
D
D
RIPPLE
IN
-V
r
=1A
=2A
=3A
r
o
o
OUT
=120Hz, V
p
OUT
p
=2V
o
o
, 10Hz ≤ f ≤ 10kHz
u
u
t
t
V
V
IN
Conditions
-V
o
o
l
l
OUT
t
t
a
a
=2V, V
g
g
e
e
S
S
R
R
RIPPLE
P
P
e
e
X
X
g
g
=1V
Rev. 2.0.0
u
1
u
1
l
l
5
PP
5
a
a
8
t
8
t
o
o
7
7
r
r