ABSOLUTE MAXIMUM RATINGS
Power Dissipation ...................................................... Internally Limited
Lead Temp. (Soldering, 5 Seconds) ........................................... 260°C
Operating Junction Temperature Range ................... -40°C to +125°C
Input Supply Voltage ........................................................ -20V to +20V
Enable Input Voltage ........................................................ -20V to +20V
RECOMMENDED OPERATING CONDITIONS
Input Voltage ................................................................... +2.5V to+16V
Operating Junction Temperature Range ................... -40°C to +125°C
Enable Input Voltage ........................................................... 0.0V to V
IN
ELECTRICAL CHARACTERISTICS
T
J
=25°C, V
OUT
+ 1V, for 1.2V Option V
IN
=V
OUT
+ 1.2V I
L
=100µA, C
L
=1µF, and V
ENABLE
≥
2.4V. The
♦
denotes the
specifications which apply over full operating temperature range -40°C to +85°C, unless otherwise specified.
PARAMETER
Output Voltage Tolerance
Output Voltage Temperature Coef.
Line Regulation
MIN
-1
-2
57
0.04
TYP
MAX
+1
+2
0.1
0.2
0.2
Load Regulation
Dropout Voltage
(V
IN
-V
O
)(Note 2)
0.05
10
125
180
340
Quiescent Current (I
GND
)
Ground Pin Current (I
GND
)
0.05
90
250
1.0
6.5
Ripple Rejection (PSRR)
Current Limit (I
LIMIT
)
Output Noise (e
NO
)
70
800
950
300
40
Input Voltage Level Logic Low (V
IL
)
Input Voltage Level Logic High (V
IH
)
ENABLE Input Current
Thermal Resistance (Note 1)
2
0.01
3
191
128.4
59
2
20
0.4
µV
RMS
µV
RMS
V
V
µA
°C/W
°C/W
°C/W
♦
♦
♦
0.4
60
80
175
250
350
450
550
700
3
8
150
190
650
900
2.0
2.5
25.0
30.0
%
mV
♦
mV
♦
mV
♦
mV
♦
µA
♦
µA
♦
µA
♦
mA
♦
mA
♦
dB
mA
♦
I
L
=10mA, C
L
=1.0µF, C
IN
=1µF,
(10Hz-100kHz)
I
L
=10mA, C
L
=10µF, C
BYP
=1µF,
C
IN
=1µF, (10Hz-100kHz)
OFF
ON
V
IL
≤
0.4V
V
IH
≥
2.0V
SOT-23-5 / Junction to Ambient
NSOIC-8 / Junction to Ambient
DFN-8 / Junction to Ambient
V
OUT
= 0.0V
I
L
= 500mA
I
L
= 150mA
I
L
= 50mA
V
ENABLE
≤
0.4V
V
ENABLE
≤
0.25V
I
L
= 100µA
IL = 500mA
I
L
= 150mA
I
L
= 50mA
UNITS
%
♦
ppm/°C
%/V
♦
V
IN
= V
OUT
+1 to 16V and V
EN
≤
6V
V
IN
= V
EN
=V
OUT
+1
≤
8V
V
IN
= V
EN
=V
OUT
+1 to 16V
Ta = 25°C to 85°C
I
L
= 0.1mA to 500mA
♦
CONDITIONS
I
L
= 100µA
NOTES
Note 1:
The maximum allowable power dissipation is a function of maximum operating junction temperature, T
J(max)
the junction to ambient thermal
resistance, and the ambient
θ
JA
, and the ambient temperature T
A
. The maximum allowable power dissipation at any ambient temperature is
given: P
D(max)
= (T
J(max)
-T
A
)/θ
JA
, exceeding the maximum allowable power limit will result in excessive die temperature; thus, the regulator will
go into thermal shutdown. The
θ
JA
of the SPX3819 is 220°C/W mounted on a PC board.
Note 2:
Not applicable to output voltage 2V or less.
July 2008 Rev F
SPX3819 500mA, Low Noise LDO Voltage Regulator
© 2008 Exar Corporation
2
EXAR [ EXAR CORPORATION ]
