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查询SPX3819供应商
®
500mA, Low-Noise LDO Voltage Regulator
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
■ Fixed Output: 1.2V, 1.5V, 1.8V, 2.5V, 3.0V,
3.1V, 3.3V, 5.0V
■ 5 Pin SOT-23, 8 Pin nSOIC and 8 pin 2X3 DFN
Packages.
APPLICATIONS
■ Battery Powered Systems
■ Cordless Phones
■ Radio Control Systems
■ Portable/Palm Top/Notebook Computers
■ Portable Consumer Equipment
■ Portable Instrumentation
■ Bar Code Scanners
■ SMPS Post Regulators
SPX3819
EN
1
SPX3819
2
NC
V
NC
IN
8 Pin DFN
3
4
Now Available in Lead Free Packaging
8
7
6
5
ADJ/BYP
GND
NC
V
OUT
DESCRIPTION
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 switched input. When disabled power consumption
drop 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.
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 voltages 1.2V, 1.5V, 1.8V,
2.5V, 3.0V, 3.1V, 3.3V, 5.0V or with an adjustable output. This device is offered in 8 pin nSOIC, 8 pin DFN
and 5-pin SOT-23 packages.
TYPICAL APPLICATION CIRCUIT
V
IN
GND
+
EN
ENABLE may be tied directly to V
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
1
2
3
SPX3819
IN
TOP View
5
4
BYP
(Opt.)
V
OUT
+
1
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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 OPERATIONG CONDITIONS
ABSOLUTE MAXIMUM RATINGS
Input Voltage ................................................................... +2.5V to+16V
Operating Junction Temperature Range ................... -40°C to +125°C
Enable Input Voltage .............................................................. 0V to V
IN
ELECTRICAL CHARACTERISTICS
TJ=25°C, V
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 +1 %
Output Voltage Temperature Coef. 57 ppm/°C
Line Regulation 0.04 0.1 %/V VIN=V
Load Regulation 0.05 0.4 % IL = 0.1mA to 500mA
Dropout Voltage 10 60 mV IL = 100µA
(VIN-VO)(Note 2) 80 ♦
Quiescent Current (I
Ground Pin Current (I
Ripple Rejection (PSRR) 70 dB
Current Limit (I
Output Noise (eNO) 300 µV
Input Voltage Level Logic Low (VIL)0.4VOFF
Input Voltage Level Logic High (VIH)2 V ON
ENABLE Input Current 0.01 2 µAV
Thermal Resistance (Note 1) 220 °C/W ♦ SOT-23-5 / Junction to Ambient
NOTES
Note 1: The maximum allowable power dissipation is a function of maximum operating junction temperature, T
Note 2: Not applicable to output voltage 2V or less.
+ 1V, for 1.2V Option VIN=V
OUT
+ 1.2V IL=100µA, CL=1µF, and V
OUT
≥ 2.4V. The ♦ denotes the
ENABLE
-2 +2 ♦
+ 1V to 16V
OUT
125 175 mV IL = 50mA
250 ♦
180 350 mV IL = 150mA
450 ♦
340 550 mV IL = 500mA
700 ♦
)0.053µAV
GND
)90150 µAI
GND
8 ♦ V
190 ♦
250 650 µAI
900 ♦
ENABLE
ENABLE
= 100µA
L
= 50mA
L
≤ 0.4V
≤ 0.25V
1.0 2.0 mA IL = 150mA
2.5 ♦
6.5 25.0 mA IL = 500mA
30.0 ♦
) 800 mA V
LIMIT
40 µV
950 ♦
RMS
RMS
320 V
= 0V
OUT
IL=10mA, CL=1.0µF, CIN=1µF,
(10Hz-100kHz)
IL=10mA, CL=10µF, C
C
=1µF, (10Hz-100kHz)
IN
≤ 0.4V
IL
≥ 2.0V
IH
BYP
=1µF,
180 °C/W ♦ SO-8 / Junction to Ambient
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: P
go into thermal shutdown. The θJA of the SPX3819 is 220°C/W mounted on a PC board.
D(max)
= (T
)/θJA, exceeding the maximum allowable power limit will result in excessive die temperature; thus, the regulator will
J(max)-TA
J(max)
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
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7.0
3.3V Device
V
= 4.3V
6.0
5.0
4.0
IN
C
= 1.0µF
L
(mA)
3.0
GND
I
2.0
1.0
0.0
0 100 200 300 400 500
IL (mA)
Ground Current vs Load Current
TYPICAL PERFORMANCE CHARACTERISTICS
160
150
140
130
120
(µA)
110
100
GND
I
90
80
70
60
46810121416
VIN (V)
Ground Current vs Input Voltage
3.3V Device
C
= 1.0µF
L
= 100µA
I
L
14.0
3.3V Device
V
= 4.3V
IN
12.0
CL = 1.0µF
10.0
8.0
(mA)
6.0
GND
I
4.0
2.0
0.0
0 100 200 300 400 500
IL (mA)
Ground Current vs Load Current in Dropout
3.350
3.345
3.340
3.335
3.330
3.325
(V)
3.320
3.315
OUT
V
3.310
3.305
3.300
3.295
3.290
46810121416
VIN (V)
Output Voltage vs Input Voltage
3.3V Device
CL= 1.0µF
IL = 100µA
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
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TYPICAL PERFORMANCE CHARACTERISTICS: Continued
350
3.3V Device
300
VIN= 3.2V
CL = 1.0µF
250
200
150
Dropout (mV)
100
50
0
0 100 200 300 400 500
IL (mA)
Dropout Voltage vs Load Current
130
120
110
(µA)
100
GND
I
90
80
3.3V Device
= 4.3µF
V
IN
CL= 1.0µF
I
= 100µA
L
3.316
3.314
3.3V Device
= 4.3V
V
IN
CL = 1.0µF
3.312
3.310
(V)
3.308
OUT
V
3.306
3.304
3.302
3.300
0 100 200 300 400 500
Output Voltage vs Load Current
360
340
320
300
(µA)
280
GND
I
260
240
220
IL (mA)
3.3V Device
V
= 4.3
IN
CL= 1.0µF
I
= 50mA
L
70
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Ground Current vs Temperature with 100µA Load
200
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Ground Current vs Temperature with 50mA Load
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
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TYPICAL PERFORMANCE CHARACTERISTICS: Continued
8.0
3.3V Device
V
= 4.3µF
IN
= 1.0µF
C
L
I
7.5
7.0
(mA)
GND
I
6.5
6.0
-40 -20 0 20 40 60 80 100 120
= 500mA
L
Temperature (°C)
Ground Current vs Temperature with 500mA Load
1.30
1.25
1.20
(V)
1.15
On Threshold
1.10
EN,
V
1.05
1.00
46810121416
VIN (V)
3.3V Device
C
= 1.0µF
L
IL = 100µA
14.0
13.5
13.0
12.5
(mA)
GND
I
12.0
11.5
11.0
10.5
-40 -20 0 20 40 60 80 100 120
3.3V Device
V
C
I
L
Temperature (°C)
Ground Current vs Temperature in Dropout
3.400
3.380
3.360
3.340
3.320
(V)
3.300
OUT
V
2.280
2.260
2.240
2.220
2.200
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
3.3V Device
V
C
I
= 4.3µF
IN
= 1.0µF
L
= 500mA
= 4.3µF
IN
= 1.0µF
L
= 500mA
L
ENABLE Voltage, ON threshold, vs Input Voltage
Output Voltage vs Temperature
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
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TYPICAL PERFORMANCE CHARACTERISTICS: Continued
350
300
250
200
150
uV RMS
100
50
0
110100 1000 10000 100000 1000000
Bypass Cap (pF)
Cin = 1uFT,
Cout = 1uFT
Cin = 1uFT,
Cout = 2.2uFT
Cin = 1uFT
Cout = 10uFT
Output Noise vs Bypass Capacitor Value IL = 10mA,
10Hz - 100kHz
Line Transient Response for 3.3V Device
Load Transient Response for 3.3V Device
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
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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 putting
out less current, a lower output capacitance may
be sufficient. For example, a regulator sourcing
only 10mA, requires approximately half the
capacitance as the same regulator sourcing
150mA.
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 the same stability often can
be obtained with a 1µF tantalum electrolytic.
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.
The SPX3819 start-up speed is inversely proportional to the size of the BYP capacitor. Applications requiring a slow ramp-up of the output voltage should use a larger C
. However,
BYP
if a rapid turn-on is necessary, the BYP capacitor can be omitted.
The SPX3819’s internal reference is available
through the BYP pin.
Figure 1 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.
The SPX3819 in Figure 2 illustrates a typical
adjustable output voltage configuration. Two
resistors (R
and R2) set the output voltage. The
1
output voltage is calculated using the formula:
V
= 1.235V x [ 1 + R1/R2]
OUT
Typical Applications Circuits
A 10nF capacitor on BYP pin will significantly
reduce output noise but it may be left uncon-
should be between 22 kΩ and 47kΩ. A capacitor
placed between Adj and ground will provide
improved noise performance.
nected if the output noise is not a major concern.
R2 must be > 10 kΩ and for best results, R
V
IN
GND
+
EN
ENABLE may be tied directly to V
Figure 1. Standard Application Circuit
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
1
2
SPX3819
3
TOP View
5
4
BYP
(Opt.)
IN
V
OUT
+
V
IN
GND
+
EN
Hi-ON
Lo-OFF
1
2
3
SPX3819
SOT-23
TOP View
BYP
(Opt.)
5
R1
4
ADJ
R2
V
OUT
+
Figure 2. Typical Adjustable Output Voltage Configuration
7
2
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PACKAGE: PIN DESCRIPTION
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CIOSn
23 1V
#niP
NFD
#niP
3-TOS
emaNniPnoitpircseD
NI
8-572 DNGdnuorG
35 5V
TUO
11 3 NEelbitapmocSOMC.)tupni(elbanE
48 4 PYB/JDA.tupnikcabdeeF.)tupni(tsujdA
-6,4-CNtcennoCoN
EN
NC
V
NC
1
SPX3819
2
8 Pin DFN
3
IN
4
8
7
6
5
ADJ/BYP
GND
NC
V
OUT
EN
V
IN
V
OUT
ADJ/BYP
1
2
3
4
tupnIylppuS
tuptuOrotalugeR
krowten
PACKAGE: PINOUTS
SPX3819
8 Pin nSOIC
;elbane=hgihcigoL.tupnilortnoc
nwodtuhs=neporowolcigol
redivid-egatlovevitsiserottcennoC
GND
8
GND
7
6
GND
GND
5
V
OUT
ADJ/BYP
54
SPX3819
5 Pin SOT-23
123
V
IN
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
GND
8
EN
Page 9
E/2
D
PACKAGE: 8 PIN SOIC
e
E1
E
INDEX AREA
(D/2 X E1/2)
1
TOP VIEW
A
A1
Minimum/Maximum
A2
DIMENSIONS
(mm)
COMMON HEIGHT DIMENSION
SYMBOL MIN NOM MAX
A
A1
A2
b
c
1.35
0.10
1.25
0.31
0.17 0.25
D
E
E1
e
L
0.40
L1
L2
Ø
Ø1
0º
5º
A
SIDE VIEW
8 Pin NSOIC
(JEDEC MS-012,
AA - VARIATION)
1.75
-
- 0.25
-
1.65
-
0.51
-
4.90 BSC
6.00 BSC
3.90 BSC
1.27 BSC
-
1.27
1.04 REF
0.25 BSC
-
8º
-
15º
E1/2
b
Ø1
Seating Plane
Ø1
SEE VIEW C
L
L1
L2
Gauge Plane
Ø
VIEW C
SEATING PLANE
WITH PLATING
b
c
BASE METAL
CONTACT AREA
PACKAGE:
8 PIN NSOIC
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
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PACKAGE: 8 PIN DFN
Top View
D
D/2
E/2
Pin 1 identifier to be located within this shaded area.
Terminal #1 Index Area (D/2 * E/2)
Side View
A
A1
A3
Bottom View
D2
12
E
K
L
e
2x3 8 Pin DFN
JEDEC mo-229C
(VCED-2) Variation
Symbol
A
A1
A3
b
D
D2
e
E
E2
K
L
b
Dimensions in (mm)
MIN
0.80 0.90 1.00
0.18 0.25 0.30
1.60 1.90
0.20
0.30
E2
NOM MAX
0 0.02 0.05
0.20
-
2.00 BSC
1.50
0.50
--
3.00 BSC
0.40
-
-
1.75
-
-
-
0.50
2x3 8 Pin DFN
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
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e1
PACKAGE: 5 PIN SOT-23
D
E1/2
E1
Dimensions in (mm)
N
N/2
+1
E/2
H
B
E
B
1
e
N/22
b
5 PIN SOT-23
JEDEC MO-178
(AA) Variation
Seating Plane
4X
MIN NOM MAX
A
A1
A2
b
c
D
e
e1
E
E1
L
L1
L2
Ø
Ø1
- - 1.45
0 - 0.15
0.90 1.15 1.30
0.30 - 0.50
0.08 - 0.22
2.90 BSC
0.95 BSC
1.90 BSC
2.80 BSC
1.60 BSC
0.30 0.45 0.60
0.60 REF
0.25 BSC
0º 4º 8º
5º 10º 15º
A
A1
WITH PLATING
BASE METAL
Ø1
Ø1
VIEW C
A2
c
SEE VIEW C
L
L1
SIDE VIEW
b
Ø
Gauge Plane
L2
5 PIN SOT-23
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
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ORDERING INFORMATION
PART NUMBERS TOP MARK PACKAGE TYPE
SPX3819S-1.8........ .................................................3819S18YYWW............................................8 Pin nSOIC
SPX3819S-1.8/TR.....................................................3819S18YYWW......................... .. ..............8 Pin nSOIC
SPX3819S-2.5 ......... ...............................................3819S25YYWW ......................................... 8 Pin nSOIC
SPX3819S-2.5/TR ....................................................3819S25YYWW ......................................... 8 Pin nSOIC
SPX3819S-3.0........... ..............................................3819S30YYWW ......................................... 8 Pin nSOIC
SPX3819S-3.0/TR.....................................................3819S30YYWW ......................................... 8 Pin nSOIC
SPX3819S-3.3............. ............................................3819S33YYWW ......................................... 8 Pin nSOIC
SPX3819S-3.3/TR.....................................................3819S33YYWW ......................................... 8 Pin nSOIC
SPX3819S-5.0............... ....................................... ..3819S50YYWW ......................................... 8 Pin nSOIC
SPX3819S-5.0/TR.................................................. ..3819S50YYWW ......................................... 8 Pin nSOIC
SPX3819S....................... ........................................3819SYYWW.................................................8 Pin nSOIC
SPX3819S/TR................ ..........................................3819SYYWW.................................................8 Pin nSOIC
SPX3819R2-1.2.........................................................3819S12YWW.............................. .. ..............8 Pin DFN
SPX3819R2-1.2/TR..... ............................................3819S12YWW.............................. .. ..............8 Pin DFN
SPX3819M5...............................................................G1WW ..................................................... 5 Pin SOT-23
SPX3819M5/TR.........................................................G1WW ..................................................... 5 Pin SOT-23
SPX3819M5-1.2........................................................ TBD ........................................................ 5 Pin SOT-23
SPX3819M5-1.2/TR............................................. .... TBD ........................................................ 5 Pin SOT-23
SPX3819M5-1.5...........................................................TBD ....................................................... 5 Pin SOT-23
SPX3819M5-1.5/TR................................................ ....TBD ....................................................... 5 Pin SOT-23
SPX3819M5-1.8..................................................... ..G3WW ..................................................... 5 Pin SOT-23
SPX3819M5-1.8/TR...................................................G3WW ..................................................... 5 Pin SOT-23
SPX3819M5-2.5 ........................................................H3WW ..................................................... 5 Pin SOT-23
SPX3819M5-2.5/TR ..................................................H3WW ..................................................... 5 Pin SOT-23
SPX3819M5-3.0........................................................J3WW .................................................. 5 Pin SOT-23
SPX3819M5-3.0/TR..................................................J3WW .................................................. 5 Pin SOT-23
SPX3819M5-3.1........................................................K3WW ...................................................... 5 Pin SOT-23
SPX3819M5-3.1/TR..................................................K3WW ...................................................... 5 Pin SOT-23
SPX3819M5-3.3.........................................................L3WW ......................................................5 Pin SOT-23
SPX3819M5-3.3/TR................. ..................................L3WW ..................................................... 5 Pin SOT-23
SPX3819M5-5.0.........................................................M3WW ..................................................... 5 Pin SOT-23
SPX3819M5-5.0/TR...................................................M3WW ..................................................... 5 Pin SOT-23
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SPX3819M5-5.0/TR = standard; SPX3819M5-L-5.0/TR = lead free
/TR = Tape and Reel
Pack quantity is 2500 for SOT-23 or NSOIC and 3000 for DFN .
Sipex Corporation
Corporation
ANALOG EXCELLENCE
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of
the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of
others.
Date:6/8/2004 SPX3819 500mA, Low Noise LDO Voltage Regulator © Copyright 2004 Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
12
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