SPX3819M5-L-5-0-TR [EXAR]
500mA Low-Noise LDO Voltage Regulator;
| 型号： | SPX3819M5-L-5-0-TR |
| 厂家： | 
EXAR CORPORATION |
| 描述： | 500mA Low-Noise LDO Voltage Regulator |
| 文件： | 总13页 (文件大小：1594K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
500mA Low-Noise LDO Voltage Regulator
500mA Low-Noise LDO Voltage Regulator
August 2016
Rev. 2.0.3
GENERAL DESCRIPTION
APPLICATIONS
The SPX3819 is a positive voltage regulator
with a low dropout voltage and low noise
output. In addition, this device offers a very low
ground current of 800μA at 100mA output. The
SPX3819 has an initial tolerance of less than
1% max and a logic compatible ON/OFF
• Portable Consumer Equipment
• Portable Instrumentation
• Industrial Equipment
• SMPS Post Regulators
switched
input.
When
disabled,
power
consumption drops to nearly zero. Other key
features include reverse battery protection,
current limit, and thermal shutdown. The
SPX3819 includes a reference bypass pin for
optimal low noise output performance. With its
very low output temperature coefficient, this
device also makes a superior low power voltage
reference.
FEATURES
• Low Noise: 40μV Possible
• High Accuracy: 1%
• Reverse Battery Protection
• Low Dropout: 340mV at Full Load
• Low Quiescent Current: 90μA
• Zero Off-Mode Current
The SPX3819 is an excellent choice for use in
battery-powered applications such as cordless
telephones, radio control systems, and portable
computers. It is available in several fixed
output voltage options or with an adjustable
output voltage.
• Fixed & Adjustable Output Voltages:
− 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.3V & 5.0V
Fixed Output Voltages
− ≥1.235V Adjustable Output Voltages
This device is offered in 8 pin NSOIC, 8 pin DFN
and 5-pin SOT-23 packages.
• Available in RoHS Compliant, Lead Free
Packages:
− 5-pin SOT-23, 8-pin SOIC and 8-pin DFN
TYPICAL APPLICATION DIAGRAM
Fig. 1: SPX3819 Application Circuit
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
SPX3819
500mA Low-Noise LDO Voltage Regulator
ABSOLUTE MAXIMUM RATINGS
OPERATING RATINGS
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum rating
conditions for extended periods of time may affect
reliability.
Input Voltage Range VIN................................2.5V to 16V
Enable Pin EN............................................... 0.0V to VIN
Junction Temperature Range................. -40°C to +125°C
Thermal Resistance1.....................................................
θJA (SOT23-5)...............................................191°C/W
θJA (NSOIC-8)............................................128.4°C/W
θJA (DFN-8)................................................... 59°C/W
VIN, EN.....................................................-20V to +20V
Storage Temperature.............................. -65°C to 150°C
Junction Temperature ..........................................150°C
Power Dissipation................................ Internally Limited
Lead Temperature (Soldering, 5 sec) .....................260°C
ESD Rating (HBM - Human Body Model).................... 2kV
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
ELECTRICAL SPECIFICATIONS
Specifications with standard type are for an Operating Junction Temperature of TJ = 25°C only; limits applying over the full
Operating Junction Temperature range are denoted by a “•”. Minimum and Maximum limits are guaranteed through test,
design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for
reference purposes only. Unless otherwise indicated, VIN = VOUT + 1V (VIN = VOUT + 1.2V for 1.2V option), IL = 100µA, CL =
1µF, VEN ≥ 2.5V, TA= TJ = 25°C.
Parameter
Min.
Typ.
Max.
Units
Conditions
+1
+2
-1
-2
Output Voltage Tolerance
%
•
•
Output Voltage Temperature
Coefficient
57
ppm/°C
0.04
0.1
0.2
VIN = VOUT +1 to 16V and VEN ≤ 6V
VIN = VEN = VOUT +1 ≤ 8V
Line Regulation
Load Regulation
%/V
%
VIN = VEN = VOUT +1 ≤16V
TA = 25°C to 85°C
0.2
0.05
10
0.4
60
IL = 0.1mA to 500mA
IL = 100µA
•
•
•
•
80
125
180
340
0.05
175
250
350
450
550
700
3
IL = 50mA
IL = 150mA
IL = 500mA
2
Dropout Voltage (VIN-VOUT
)
mV
VENABLE ≤ 0.4V
Quiescent Current (IGND
)
µA
µA
•
•
•
•
•
8
VENABLE = 0.25V
90
250
1.0
6.5
70
150
190
650
900
2.0
2.5
25.0
30.0
IL = 100µA
IL = 50mA
IL = 150mA
IL = 500mA
Ground Pin Current (IGND
)
mA
dB
Ripple Rejection (PSRR)
© 2013-2016 Exar Corporation
2/12
Rev. 2.0.3
SPX3819
500mA Low-Noise LDO Voltage Regulator
Parameter
Current Limit (ILIMIT
Min.
Typ.
Max.
Units
Conditions
800
)
mA
VOUT=0V
•
950
IL = 10mA, CL = 1.0µF, CIN = 1µF,
(10Hz – 100kHz)
300
40
µVRMS
µVRMS
V
Output Noise (eNO)
IL = 10mA, CL = 1.0µF, CBYP = 1µF,
CIN = 1µF, (10Hz – 100kHz)
Input Voltage Level Logic Low
(VIL)
0.4
OFF
ON
Input Voltage Level Logic High
(VIH)
V
2
0.01
3
2
20
VIL ≤ 0.4V
VIH ≥ 2.0V
ENABLE Input Current
µA
Note 2: Not applicable to output voltage 2V or less.
PIN ASSIGNMENT
Fig. 2: SPX3819 Pin Assignment
PIN DESCRIPTION
Pin #
Pin #
DFN
Pin #
Name
Description
SOT-23
nSOIC
1
2
5
2
5, 6, 7, 8
3
3
7
5
Supply Input
Ground
VIN
GND
VOUT
Regulator Output
Enable(input). CMOS compatible control input. Logic high – enable;
logic low or open = shutdown
3
1
1
EN
Adjust(input). Feedback input. Connect to resistive voltage-divider
network
4
-
4
-
8
ADJ/BYP
NC
2, 4, 6
No Connect
© 2013-2016 Exar Corporation
3/12
Rev. 2.0.3
SPX3819
500mA Low-Noise LDO Voltage Regulator
ORDERING INFORMATION
Temperature
Part Number
Packaging
Method
Marking
G1WW
A4WW
W3WW
G3WW
H3WW
J3WW
Package
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
SOT-23-5
Note 1
Note 2
Range
Bulk
Tape & Reel
Bulk
SPX3819M5-L
-40°C≤TJ≤+125°C
SPX3819M5-L/TR
Halogen free
Halogen free
Halogen free
Halogen free
Halogen free
Halogen free
Halogen free
Halogen free
SPX3819M5-L-1-2
-40°C≤TJ≤+125°C
SPX3819M5-L-1-2/TR
Tape & Reel
Bulk
SPX3819M5-L-1-5
-40°C≤TJ≤+125°C
SPX3819M5-L-1-5/TR
Tape & Reel
Bulk
SPX3819M5-L-1-8
-40°C≤TJ≤+125°C
SPX3819M5-L-1-8/TR
Tape & Reel
Bulk
SPX3819M5-L-2-5
-40°C≤TJ≤+125°C
SPX3819M5-L-2-5/TR
Tape & Reel
Bulk
SPX3819M5-L-3-0
-40°C≤TJ≤+125°C
SPX3819M5-L-3-0/TR
Tape & Reel
Bulk
SPX3819M5-L-3-3
-40°C≤TJ≤+125°C
SPX3819M5-L-3-3/TR
L3WW
M3WW
Tape & Reel
Bulk
SPX3819M5-L-5-0
-40°C≤TJ≤+125°C
SPX3819M5-L-5-0/TR
Tape & Reel
L0L
YWW
XX
M0L
YWW
XX
N0L
YWW
XX
SPX3819
YYWWL
XXX
SPX3819
12YYWWL
XXX
SPX3819
15YYWWL
XXX
SPX3819
18YYWWL
XXX
SPX3819
25YYWWL
XXX
SPX3819
33YYWWL
XXX
SPX3819
50YYWWL
XXX
Bulk
SPX3819R2-L
DFN-8
DFN-8
-40°C≤TJ≤+125°C
SPX3819R2-L/TR
Halogen free
Halogen free
Halogen free
Halogen free
Halogen free
Halogen free
Halogen free
Halogen free
Halogen free
Halogen free
Tape & Reel
Bulk
Tape & Reel
Bulk
SPX3819R2-L-1-2
-40°C≤TJ≤+125°C
SPX3819R2-L-1-2/TR
SPX3819R2-L-1-8
DFN-8
-40°C≤TJ≤+125°C
Tape & Reel
SPX3819R2-L-1-8/TR
Bulk
Tape & Reel
Bulk
SPX3819S-L
-40°C≤TJ≤+125°C
SPX3819S-L/TR
NSOIC-8
NSOIC-8
NSOIC-8
NSOIC-8
NSOIC-8
NSOIC-8
NSOIC-8
SPX3819S-L-1-2
-40°C≤TJ≤+125°C
SPX3819S-L-1-2/TR
Tape & Reel
Bulk
SPX3819S-L-1-5
-40°C≤TJ≤+125°C
SPX3819S-L-1-5/TR
Tape & Reel
Bulk
SPX3819S-L-1-8
-40°C≤TJ≤+125°C
SPX3819S-L-1-8/TR
Tape & Reel
Bulk
SPX3819S-L-2-5
-40°C≤TJ≤+125°C
SPX3819S-L-2-5/TR
Tape & Reel
Bulk
SPX3819S-L-3-3
-40°C≤TJ≤+125°C
SPX3819S-L-3-3/TR
Tape & Reel
Bulk
SPX3819S-L-5-0
-40°C≤TJ≤+125°C
SPX3819S-L-5-0/TR
Tape & Reel
Refer to www.exar.com/SPX3819 for most up-to-date Ordering Information
© 2013-2016 Exar Corporation
4/12
Rev. 2.0.3
SPX3819
500mA Low-Noise LDO Voltage Regulator
TYPICAL PERFORMANCE CHARACTERISTICS
Fig. 4: Ground Current vs Input Voltage
Fig. 3: Ground Current vs Load Current
Fig. 6 Output Voltage vs Input Voltage
Fig. 5 Ground Current vs Load Current in Dropout
Fig. 8 Output Voltage vs Load Current
Fig. 7 Dropout Voltage vs Load Current
© 2013-2016 Exar Corporation
5/12
Rev. 2.0.3
SPX3819
500mA Low-Noise LDO Voltage Regulator
Fig. 9 Ground Current vs Temperature with 100μA Load
Fig. 10 Ground Current vs Temperature with 50mA Load
Fig. 12 Ground Current vs Temperature in Dropout
Fig. 14 Output Voltage vs Temperature
Fig. 11 Ground Current vs Temperature with 500mA Load
Fig. 13 ENABLE Voltage, ON threshold, vs Input Voltage
© 2013-2016 Exar Corporation
6/12
Rev. 2.0.3
SPX3819
500mA Low-Noise LDO Voltage Regulator
Fig. 15 Output Noise vs Bypass Capacitor Value IL = 10mA,
Fig. 16 Line Transient Response for 3.3V Device
10Hz - 100kHz
Fig. 17 Load Transient Response for 3.3V Device
the same stability often can be obtained with a
1μF tantalum electrolytic.
APPLICATION INFORMATION
The SPX3819 requires an output capacitor for
device stability. Its value depends upon the
application circuit. In general, linear regulator
stability decreases with higher output currents.
In applications where the SPX3819 is sourcing
less current, a lower output capacitance may be
sufficient. For example, a regulator outputting
only 10mA, requires approximately half the
capacitance as the same regulator sourcing
150mA.
With the SPX3819 adjustable version, the
minimum value of output capacitance is a
function of the output voltage. The value
decreases with higher output voltages, since
closed loop gain is increased.
TYPICAL APPLICATIONS CIRCUITS
A 10nF capacitor on the BYP pin will significantly
reduce output noise, but it may be left
unconnected if the output noise is not a major
concern. The SPX3819 start-up speed is
inversely proportional to the size of the BYP
capacitor. Applications requiring a slow rampup
of the output voltage should use a larger CBYP.
However, if a rapid turn-on is necessary, the
BYP capacitor can be omitted.
Bench testing is the best method for
determining the proper type and value of the
capacitor
since
the
high
frequency
characteristics of electrolytic capacitors vary
widely, depending on type and manufacturer. A
high quality 2.2μF aluminum electrolytic
capacitor works in most application circuits, but
© 2013-2016 Exar Corporation
7/12
Rev. 2.0.3
SPX3819
500mA Low-Noise LDO Voltage Regulator
The SPX3819’s internal reference is available
through the BYP pin.
resistors (R1 and R2) set the output voltage.
The output voltage is calculated using the
formula:
Figure 18 represents a SPX3819 standard
application circuit. The EN (enable) pin is pulled
high (>2.0V) to enable the regulator. To disable
the regulator, EN < 0.4V.
VOUT = 1.235V x [1 + R1/R2]
R2 must be >10kΩ and for best results, R2
should be between 22kΩ and 47kΩ.
Fig. 18: Standard Application Circuit
Fig. 19: Typical Adjustable Output Voltage Configuration
The SPX3819 in Figure 19 illustrates a typical
adjustable output voltage configuration. Two
© 2013-2016 Exar Corporation
8/12
Rev. 2.0.3
SPX3819
500mA Low-Noise LDO Voltage Regulator
PACKAGE SPECIFICATION
8-PIN SOICN
© 2013-2016 Exar Corporation
9/12
Rev. 2.0.3
SPX3819
500mA Low-Noise LDO Voltage Regulator
8-PIN 2X3 DFN
© 2013-2016 Exar Corporation
10/12
Rev. 2.0.3
SPX3819
500mA Low-Noise LDO Voltage Regulator
5-PIN SOT-23
© 2013-2016 Exar Corporation
11/12
Rev. 2.0.3
SPX3819
500mA Low-Noise LDO Voltage Regulator
REVISION HISTORY
Revision
Date
Description
Reformat of Datasheet
Addition of SPX3819R2-L and SPX3819R2-L/TR part numbers
08/23/12
12/02/13
05/20/14
08/31/16
2.0.0
2.0.1
2.0.2
2.0.3
Added Storage Temperature Range and Junction Temperature in ABS MAX Ratings.
Updated package drawings and corrected DFN-8 package marking information
[ECN 1423-03 6/3/14]
Updated logo and Ordering Information table.
FOR FURTHER ASSISTANCE
Email:
customersupport@exar.com
powertechsupport@exar.com
Exar Technical Documentation:
https://www.exar.com/technical-documentation
EXAR CORPORATION
HEADQUARTERS AND SALES OFFICES
48720 Kato Road
Fremont, CA 94538 – USA
Tel.: +1 (510) 668-7000
Fax: +1 (510) 668-7030
www.exar.com
NOTICE
EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design,
performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein, conveys
no license under any patent or other right, and makes no representation that the circuits are free of patent infringement.
Charts and schedules contained herein are only for illustration purposes and may vary depending upon a user’s specific
application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for
inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or
malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its
safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing,
assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks;
(c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
© 2013-2016 Exar Corporation
12/12
Rev. 2.0.3
Mouser Electronics
Authorized Distributor
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SPX3819M5-L SPX3819S-L-2-5 SPX3819R2-L-1-8/TR SPX3819M5-L-3-3/TR SPX3819S-L-3-3/TR SPX3819S-L-1-
8/TR SPX3819R2-L-1-2/TR SPX3819S-L-1-5 SPX3819S-L-1-5/TR SPX3819S-L-1-2/TR SPX3819S-L-5-0
SPX3819M5-L-1-2/TR SPX3819S-L-3-3 SPX3819S-L SPX3819R2-L/TR SPX3819M5-L-5-0/TR SPX3819S-L-2-5/TR
SPX3819M5-L/TR SPX3819S-L-1-8 SPX3819S-L-1-2 SPX3819M5-L-1-2 SPX3819M5-L-1-5 SPX3819M5-L-1-8
SPX3819M5-L-3-0 SPX3819M5-L-3-3 SPX3819M5-L-5-0 SPX3819R2-L SPX3819R2-L-1-2 SPX3819R2-L-1-8
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