SPX3819U-L-2.5 [SIPEX]
Fixed Positive LDO Regulator, 2.5V, 0.7V Dropout, PSFM3, TO-220, 3 PIN;
| 型号： | SPX3819U-L-2.5 |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | Fixed Positive LDO Regulator, 2.5V, 0.7V Dropout, PSFM3, TO-220, 3 PIN 局域网 输出元件 调节器 |
| 文件： | 总14页 (文件大小：209K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SPX3819
500 mA, Low-Noise LDO Voltage Regulator
(
)
ADVANCED INFORMATION
FEATURES
APPLICATIONS
•
•
•
•
•
•
•
•
Ultra-Low Noise Output LDO
•
•
•
•
•
•
•
Battery Powered Systems
Cordless Telephones
1% Initial Accuracy At 500mA
Very Low Quiescent Current
Radio Control Systems
Low Dropout Voltage (300mV At 500mA)
Current & Thermal Limiting
Portable/Palm Top/Notebook Computers
Portable Consumer Equipment
Portable Instrumentation
Bar Code Scanners
Reverse-Battery Protection
Several Fix Output Voltages, 2.5, 3.3, 5.0V & Adjustable
Zero Off-Mode Current
•
SMPS Post-Regulator
•
•
Packages offered SO-8, TO-263, SOT-223, SOT-23 & TO-220
Pin Compatible to MIC5209 (Fixed Option Only)
PRODUCT DESCRIPTION
The SPX3819 is a low powered positive voltage regulator with ultra low noise output and very low voltage dropout. In addition, this
device offers very low quiescent current of approximately 800uA at 100mA output. The SPX3819 initial tolerance is less than 1%
max with logic compatible ON/OFF switching input. The unique feature of SPX3819 includes a reference bypass pin for the best
results of low noise.
This device is an excellent choice for the use in battery-powered applications such as cordless telephones, radio control systems, and
portable computers. When disable power consumption drop to nearly zero. This device has a very low output temperature coefficient,
making it a low power voltage reference. The key features include protection against reversed battery, fold-back current limiting, and
automotive load dump protection.
The SPX3819 is available in several fixed voltages 2.5V, 3.3V, 5.0V or adjustable output. This device is offered in SO-8, 3 and 5 pin
TO-263, SOT-223, 5-pin SOT-23 & 3-pin TO-220. These packages offer all the features and adjustable output.
MARKING INFORMATION
PIN CONNECTIONS
(SOT-23 Only)
Voltage
ADJ
Marking
A0XX
A8XX
A1XX
A9XX
TO-220
SOT-23-5
SOT-223
TO-263-5 Package
TO-263-3 Package
SPX3819
EN GND
VIN
2.5V
VOUT
GND
VIN
3.3V
5.0V
3
2
1
SPX3819
SPX3819
SPX3819
1
2
3
1
3
2
4
5
1
3
2
4 5
XX Production Reference Code.
Front View
1)
EN
2) VIN
3) GND
GND
V
V
ADJ/BYP
VOUT
IN
OUT
VOUT
4)
5) ADJ/BYP
Top View
Front View
V
VOUT
GND
IN
Top View
Front View
Rev. 10/30/00
SPX3819
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
Input Voltage.................................................. +2.5V to+16V
Operating Junction Temperature Range ..... -40°C to +125°C
Enable Input Voltage............................................. 0V to VIN
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
ELECTRICAL CHARACTERISTICS
TJ = 25°C, VOUT + 1V, IL = 100µA, CL = 1µF, and VENABLE > 2.4V. Unless otherwise specified boldface applies over the junction
temperature range
Parameter
Test Conditions
IL = 100 µA
Typ
Min
-1
Max
+1
Units
Output Voltage Tolerance
%
-2
+2
IL = 500 µA
Output Voltage Temperature Coef.
(∆V/∆T)
Line Regulation (∆V/V)
Load Regulation (∆V/V)
Dropout Voltage
(VIN- VO)
57
ppm/°C
VIN = VOUT + 1V to 16V
IL = 0.1mA to 500mA
IL = 100 µA
0.04
0.05
10
0.1
0.2
%/V
%
60
80
IL = 50 mA
125
180
340
175
250
350
450
550
700
3
mV
IL = 150 mA
IL = 500 mA
VENABLE < 0.6V
Quiescent Current (IGND
)
0.05
0.10
110
µA
µA
VENABLE < 0.25V
8
Ground Pin Current
150
190
650
900
2.0
2.5
25.0
30.0
IL = 100 µA
IL = 50 mA
IL = 150 mA
IL = 500 mA
(IGND
)
360
1.3
mA
13.0
Ripple Rejection (PSRR)
Current Limit (ILIMIT
Output Noise (eNO
55
800
390
dB
mA
)
VOUT = 0V
950
)
IL = 50mA, CL = 1.0µF
(10Hz – 100KHz)
µVRMS
Input Voltage Level
Logic Low (VIL)
OFF
0.6
V
Input Voltage Level
Logic High (VIH
)
ON
2
V
ENABLE Input Current
VIL < 0.6V
VIH > 2.0V
TO-220
0.01
2
2
µA
20
Thermal Resistance
Junction to Tab
3.0
60
Junction to Ambient
Junction to Tab
DD Package
SOT-223
SOT-23-5
SO-8
3.0
60
Junction to Ambient
Junction to Tab
°C/W
15
Junction to Ambient
Junction to Tab
156
N/A
220
N/A
180
Junction to Ambient
Junction to Tab
Junction to Ambient
Rev. 10/30/00
SPX3819
TYPICAL APPLICATION
1
5
4
V
VOUT
IN
+
2
GND
EN
SPX3819
+
3
BYP
(Optn.)
ENABLE may be tied directly to V
IN
Rev. 10/30/00
SPX3819
Ground Current Vs. Load Current
Ground Current Vs. Input Voltage
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
160
150
140
130
120
110
100
90
3.3V Device
Vin = 4.3V
CL = 1.0uF
3.3V Device
IL = 100uA
CL = 1.0uF
80
70
60
0
100
200
300
400
500
500
500
4
6
8
10
12
14
16
IL (mA)
Vin (V)
Output Voltage Vs. Input Voltage
Ground Current Vs. Load Current
(In Dropout)
3.350
3.345
3.340
3.335
3.330
3.325
3.320
3.315
3.310
3.305
3.300
3.295
3.290
14.0
12.0
10.0
8.0
6.0
3.3V Device
4.0
3.3V Device
IL = 100uA
CL = 1.0uF
Vin = 4.3V
CL = 1.0uF
2.0
0.0
0
100
200
300
400
4
6
8
10
Vin (V)
12
14
16
IL (mA)
Output Voltage Vs. Load Current
Dropout Voltage Vs. Load Current
350
300
250
200
150
100
50
3.316
3.314
3.312
3.310
3.308
3.306
3.304
3.302
3.300
3.3V Device
Vin = 4.3V
CL = 1.0uF
3.3V Device
Vin = 3.2V
CL = 1.0uF
0
0
100
200
300
400
0
100
200
300
400
500
IL (mA)
IL (mA)
Rev. 10/30/00
SPX3819
Ground Current Vs. Temperature
Ground Current Vs. Temperature
360
340
320
300
280
260
240
220
200
130
120
110
100
90
3.3V Device
Vin = 4.3
3.3V Device
CL = 1.0uF
IL = 50mA
Vin = 4.3V
CL = 1.0uF
IL = 100uA
80
70
-40
-20
0
20
40
60
80
100
120
-40
-20
0
20
40
60
80
100
120
Temperature (Degree C)
Temperature (Degree C)
Ground Current in Dropout Vs. Temperature
Ground Current Vs. Temperature
8.0
7.5
7.0
6.5
6.0
14.0
13.5
13.0
12.5
12.0
11.5
11.0
10.5
3.3V Device
Vin = 4.3V
CL = 1.0uF
IL = 500mA
3.3V Device
Vin = 4.3V
CL = 1.0uF
IL = 500mA
-40
-20
0
20
40
60
80
100
120
-40
-20
0
20
40
60
80
100
120
Temperature (Degree C)
Temperature (Degree C)
Enable Voltage (On Threshold) Vs. Input Voltage
Output Voltage Vs. Temperature
1.30
1.25
1.20
1.15
1.10
1.05
1.00
3.400
3.380
3.360
3.340
3.320
3.300
3.280
3.260
3.240
3.220
3.200
3.3V Device
Vin = 4.3V
CL = 1.0uF
IL = 500uA
3.3V Device
CL =1.0uF
IL = 100uA
-40
-20
0
20
40
60
80
100
120
4
6
8
10
Vin (V)
12
14
16
Temperature (Degree C)
Rev. 10/30/00
SPX3819
Rev. 10/30/00
SPX3819
Application Hints
In general, linear regulator stability decreases with higher
output currents. In most applications the SPX3819 is
operating at few milliamps. In these applications the output
capacitance can be further reduced. For example, when the
regulator is running at 10mA output current the output
capacitance value is half compared to the same regulator
that is running at 150mA.
The SPX3819 requires an output capacitor for device stability.
The value required varies greatly depending upon the
application circuit. The high frequency characteristics of
electrolytic capacitors depend greatly on the type and also on
the manufacturer. Sometimes bench testing is the only means
to determine the proper capacitor type and value. The high
quality 2.2µF aluminum electrolytic capacitor covers all
general application circuits; this stability can be obtained with
a tantalum electrolytic value of 1µF.
With the SPX3819 adjustable regulator, the minimum value
of output capacitance is a function of the output voltage.
The value decreases with higher output voltages, since the
closed loop gain is increased.
Typical Applications Circuits
The SPX3819 provides access to the internal reference. A 10µF capacitor on the Ref BYP pin will provide a significant reduction in
output noise. This pin 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 its capacitor. Applications requiring a slow ramp-up of output voltage should consider larger values of
CBYP. If the rapid turn-ON is necessary, omit bypass capacitor.
Figure 1 shows SPX3819 standard application circuit. The EN (enable) pin is pulled high (>2.0V) to enable the regulator. To disable
the regulator, EN < 0.6V.
VIN
VOUT
5
1
2
3
+
SPX3819
SOT-23
GND
EN
+
4
BYP
(Optn)
Hi-ON
Lo-OFF
Top View
Fig. 1
The SPX3819 in figure 2 shows adjustable output voltage configuration. Two resistors set the output voltage. The formula for output
voltage is:
R1
VOUT = 1.235V x 1 +
R2
Resistor values are not critical as the Adj pin has high input impedance, for best results use resistors of 47kΩ or less. A capacitor for
Adj to ground will provide improved noise performance.
1
5
4
VIN
VOUT
2
+
SPX3819
SOT-23
GND
EN
R1
R2
+
3
ADJ
Byp
(Optn)
Hi-ON
Lo-OFF
Top View
Fig. 2
Rev. 10/30/00
SPX3819
PACKAGE DRAWING
SOIC-8 (S)
4.0 (0.158)
3.8 (0.150)
5.2 (0.205)
4.6 (0.181)
6.2 (0.244)
5.8 (0.228)
Pin 1
1.27 (0.50)
BSC
1.75 (0.069)
1.35 (0.053)
0.78 (0.031)
0.61 (0.024)
0.77 (0.030)
0.64 (0.025)
°
(4 PLCS)
°
45
5.0 (0.197)
4.8 (0.188)
0.37 (0.015)
BSC
7
°
-6°
3
0.56 (0.022)
0.49 (0.019)
0.22 (0.009)
0.19 (0.007)
°
7
(4 PLCS)
0.45 (0.018)
0.35 (0.014)
0.20 (0.008)
0.10 (0.004)
Rev. 10/30/00
SPX3819
PACKAGE DRAWING
TO-263-3L (T)
±
±
(4.470 ±
0.127)
0.051)
0.005
0.176
0.050
0.055 (1.397)
0.405 ±
0.005
±
0.002 (1.270
±
(10.287 0.127)
0.356 ± 0.005
±
(9.042 0.127)
0.600 +- 0.025
±
(15.24
0.635)
±
0.010
0.100
±
(2.540 0.254)
0° 8°
0.103 BSC
(2.616)
0.050 (1.270)
+
0.032 +- 0.001
+ 0.003
0.015
-
(0.813 +- 0.025)
-
(0.381 0.074)
Rev. 10/30/00
SPX3819
PACKAGE DRAWING
TO-263-5L (T)
0.055 (1.397)
±
±
±
0.176
0.050
0.005 (4.470 0.127)
0.405 ± 0.005
0.127)
±
0.002
(1.270 0.051)
(10.287 ±
±
±
0.356
(9.042
0.005
0.127)
±
0.600 0.025
±
(15.24
0.635)
±
±
0.100
0.010
(2.540
0.254)
0°
8°
±
±
0.015
0.003
±
±
±
0.067
0.005
0.032 0.003
±
(0.381
0.074)
(1.702 0.127)
(0.813
0.076)
Rev. 10/30/00
SPX3819
PACKAGE DRAWING
SOT-223-3L (M3)
0.124
0.116
0.146 0.295
0.130 0.264
0.041
0.033
0.0905 NOM
0.181 NOM
0.067
0.028
°
16 C
°
10 C
0.264
0.248
0.0040
0.0008
0.014
0.010
10°C Max
16
°
C
0.033
0.025
10
°
C
Rev. 10/30/00
SPX3819
PACKAGE DRAWING
SOT-23-5L (M5)
D
B (5 PLACES)
H
E
e
e1
A
A2
C
A1
L
INCHES
MILLIMETERS
NOTE:
1. REFER TO APPLICABLE
MIN.
0.90
0
MAX
1.30
0.10
MIN.
MAX.
A
A1
A2
B
.035
0
.051
.004
2. CONTROLLING DIMENTION : MILLIMETER
3. PACKAGE SURFACE FINISHING TO BE SMOOTH
FINISH.
0.80 REF
.0315 REF
0.30
0.10
2.70
1.40
0.50
0.35
3.10
1.80
.012
.004
.106
.055
.019
.0137
.122
C
D
E
.071
e
.037 BSC.
0.95 BSC.
e1
H
L
1.70
2.50
2.10
3.00
.066
.098
.082
.118
MIN 0.2
MIN .0078
Rev. 10/30/00
SPX3819
PACKAGE DRAWING
TO-220-3L (U)
0.180 ± 0.005
(4.572 ± 0.127)
0.151D ± 0.002
(3.835 D ± 0.051)
0.408 ± 0.013
(10.36 ± 0.33)
0.050 ± 0.002
(1.270 ± 0.051)
0.110 ± 0.010
(2.794 ± 0.254)
0.250 ± 0.010
(6.350 ± 0.254)
Tapered 1o
2 Sides
0.340 ± 0.010
(8.636 ± 0.254)
SEATING PLANE
1.020 ± 0.015
(25.910 ± 0.381)
0.150 MIN
(3.81 MIN)
7o Typ.
0.540 ± 0.015
(13.720 ± 0.381)
0.410
(10.41)
0.050 TYP
(1.27 TYP)
0.200 ± 0.010
(5.080 ± 0.254)
0.015 ± 0.010/-0.015
(2.667± 0.254/-0.381)
0.100 ± 0.010
(2.540 ± 0.254)
0.015 ± 0.010/-0.002
(0.381± 0.254/-0.051)
0.032 ± 0.005
(0.813 ± 0.127)
Rev. 10/30/00
SPX3819
ORDERING INFORMATION
Ordering No.
Output Voltage
Adj
Packages
SPX3819S
8 Lead SOIC
SPX3819S-2.5
SPX3819S-3.3
SPX3819S-5.0
SPX3819T
2.5V
3.3V
5.0V
Adj
8 Lead SOIC
8 Lead SOIC
8 Lead SOIC
3 Lead TO-263
3 Lead TO-263
3 Lead TO-263
3 Lead TO-263
5 Lead TO-263
5 Lead TO-263
5 Lead TO-263
5 Lead TO-263
3 Lead SOT-223
3 Lead SOT-223
3 Lead SOT-223
3 Lead SOT-223
5 Lead SOT-23
5 Lead SOT-23
5 Lead SOT-23
5 Lead SOT-23
3 Lead SOT-220
3 Lead SOT-220
3 Lead SOT-220
3 Lead SOT-220
SPX3819T-2.5
SPX3819T-3.3
SPX3819T-5.0
SPX3819T5
2.5V
3.3V
3.0V
Adj
SPX3819T5-2.5
SPX3819T5-3.3
SPX3819T5-5.0
SPX3819M3
2.5V
3.3V
5.0V
Adj
SPX3819M3-2.5
SPX3819M3-3.3
SPX3819M3-5.0
SPX3819M5
2.5V
3.3V
5.0V
Adj
SPX3819M5-2.5
SPX3819M5-3.3
SPX3819M5-5.0
SPX3819U
2.5V
3.3V
5.0V
Adj
SPX3819U-2.5
SPX3819U-3.3
SPX3819U-5.0
2.5V
3.3V
5.0V
Corporation
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation
Headquarters and Main Offices:
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 935-7600
FAX: (408) 934-7500
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
hereing; neither does it convey any license under its patent rights nor the rights of others.
Rev. 10/30/00
相关型号：
SPX385AM-2.5/TR
Two Terminal Voltage Reference, 1 Output, 2.5V, Trim/Adjustable, BIPolar, PDSO3, TO-236AB, SOT-23, 3 PIN
EXAR
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