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
ELECTRICAL CHARACTERISTICS
Input Voltage ................................................................... +2.5V to+16V
Operating Junction Temperature Range ................... -40°C to +125°C
Enable Input Voltage ........................................................... 0.0V to VIN
TJ=25°C, VOUT + 1V, for 1.2V Option VIN=VOUT + 1.2V IL=100µA, CL=1µF, and VENABLE ≥ꢀ2.4V. The
♦ denotes the
specifications which apply over full operating temperature range -40°C to +85°C, unless otherwise specified.
PARAMETER
MIN
TYP
MAX
UNITS
♦ꢀ
♦
CONDITIONS
Output Voltage Tolerance
-1
-2
+1
+2
%
Output Voltage Temperature Coef.
Line Regulation
57
0.04
ppm/°C
%/V
0.1
VIN = VOUT +1 to 16V and VEN ≤ 6V
VIN = VEN =VOUT +1 ≤ 8V
♦ꢀ
0.2
VIN = VEN =VOUT +1 to 16V
Ta = 25°C to 85°C
ꢀ
0.2
Load Regulation
0.05
10
0.4
%
mV
IL = 0.1mA to 500mA
IL = 100µA
Dropout Voltage
60
(VIN-VO)(Note 2)
80
♦ꢀ
♦ꢀ
♦ꢀ
♦
125
180
340
0.05
90
175
250
mV
mV
mV
µA
IL = 50mA
IL = 150mA
IL = 500mA
350
450
550
700
Quiescent Current (IGND
)
3
VENABLE ≤ꢀ0.4V
VENABLE ≤ꢀ0.25V
8
♦ꢀ
♦ꢀ
♦
Ground Pin Current (IGND
)
150
190
µA
IL = 100µA
IL = 50mA
IL = 150mA
IL = 500mA
250
1.0
650
µA
900
2.0
2.5
mA
mA
♦
6.5
25.0
30.0
♦
Ripple Rejection (PSRR)
70
dB
Current Limit (ILIMIT
)
800
mA
VOUT = 0.0V
950
0.4
♦
Output Noise (eNO
)
300
40
µVRMS
µVRMS
IL=10mA, CL=1.0µF, CIN=1µF,
(10Hz-100kHz)
IL=10mA, CL=10µF, CBYP =1µF,
CIN =1µF, (10Hz-100kHz)
Input Voltage Level Logic Low (VIL)
Input Voltage Level Logic High (VIH
ENABLE Input Current
V
V
µA
OFF
ON
)
2
0.01
3
2
VIL ≤ꢀ0.4V
20
VIH ≥ꢀ2.0V
Thermal Resistance (Note 1)
191
128.4
59
°C/W
°C/W
°C/W
♦ꢀ
♦ꢀ
♦ꢀ
SOT-23-5 / Junction to Ambient
NSOIC-8 / Junction to Ambient
DFN-8 / Junction to Ambient
NOTES
Note 1: The maximum allowable power dissipation is a function of maximum operating junction temperature, TJ(max) the junction to ambient thermal
resistance, and the ambient θJA, and the ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is
given: PD(max) = (TJ(max)-TA)/θJA, exceeding the maximum allowable power limit will result in excessive die temperature; thus, the regulator will
go into thermal shutdown. The θJA 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 ]
