SPX1129R-2.5 [SIPEX]
500mA Low Dropout Voltage Regulator; 500毫安低压差稳压器
| 型号： | SPX1129R-2.5 |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | 500mA Low Dropout Voltage Regulator |
| 文件： | 总8页 (文件大小：223K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
SPX1129
400mA Low Dropout Voltage Regulator
FEATURES
■ 1% Output Accuracy 3.3V, 5V,
SPX1129
SPX1129
at 500mA Output
3 Pin TO-263
3 Pin TO-220
1
2
3
■ Very Low Quiescent Current
1
2
3
■ 0.42V Dropout Voltage at 400mA
■ Extremely Tight Load and Line Regulation
■ Current & Thermal Limiting
VOUT
VIN
GND
■ Reverse Battery Protection
VOUT
GND VIN
■ Equivalent Replacement For LT1129
SPX1129
3
2
1
VIN
SPX1129
3 Pin TO-263
1
2
3
TO-252
GND
VOUT
APPPLICATIONS
■ Power Supply
GND VOUT
VIN
■ Communications Equipment
■ Computers and Peripherals
Now Available in Lead Free Packaging
DESCRIPTION
TheSPX1129isalowpowervoltageregulator.Thisdeviceisanexcellentchoiceforuseinbattery-powered
applications such as cordless telephones, radio control systems, and portable computers. The SPX1129
features very low quiescent current and very low dropout voltage of 0.42 volts. This includes a tight initial
toleranceof±1%max, andaverylowoutputtemperaturecoefficient, makingtheSPX1129usefulasalow-
power voltage reference.
The SPX1129 is offered in a SOT-223, TO-220, TO-252 & TO-263 3 lead packages.
TYPICAL APPLICATION CIRCUIT
IIN
5V
VIN
OUT
IN
IL
SPX1129
LOAD
+
+
2.2µF
0.1µF
GND
IG
IIN = IL + IG
Fixed +5V Regulator Circuit..
Date: 5/25/04
SPX1129 400mA Low Dropout Voltage Regulator
©Copyright 2004 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
Power Dissipation ........................................................ Internally Limited
Lead Temp. (Soldering, 5 Seconds) ............................................. 260°C
Storage Temperature Range ........................................ -65°C to +150°C
Operating Junction Temperature Range ....................... -40°C to +125°C
Input Supply Voltage ....................................................... -20V to +20V
ESD Rating .............................................................................. 2kV Min
ELECTRICAL CHARACTERISTICS
Electrical characteristics at VIN = 6V, IO = 1mA, COUT = 2.2µF, TA= 25°C, unless otherwise specified. Boldface applies over
the full operating temperature range.
PARAMETER
CONDITIONS
(Note 2)
TYP
MIN
MAX
UNITS
3.3V Version
Output Voltage
3.3
3.267
3.333
V
1mA ≤ IL ≤ 400mA
3.3
3.217
3.382
Reverse Output Current
5.0V Version
VOUT= 3.3V, VIN= 0V
16
25
µA
Output Voltage
5.0
4.950
5.050
V
1mA ≤ IL ≤ 400mA
5.0
4.880
5.120
Reverse Output Current
VOUT= 5.0V, VIN= 0V
16
20
25
µA
All Voltage Options
Output Voltage
100
10
ppm/°C
Temperature Coefficient
(Note1)
Line Regulation
6V ≤ VIN ≤ 20V (Note 4)
IL=1 to 400mA
1.5
6
mV
mV
Load Regulation (Note 3)
20
30
Dropout Voltage (Note 5)
Ground Current
IL=1mA
0.13
0.42
0.17
0.25
0.55
0.70
V
IL=400mA
IL=1mA
100
350
200
500
µA
IL=10mA
IL=50mA
IL=100mA
IL=400mA
1.5
2
3
6
mA
7
25
Current Limit
VOUT=0
330
58
800
mA
dB
Ripple Rejection
VIN -VOUT=1V(Avg)
,
50
VRIPPLE=0.5Vp-p, FRIPPLE=120Hz,
ILOAD=400mA, TJ= 25°C
Input Reverse Leakage Current VIN= -20V, VOUT=0V
1.0
mA
Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided by
the total temperature range.
Note 2: Unless otherwise specified all limits are guaranteed for Tj = 25°C, VIN = 6V, IL = 1mA and CL = 2.2µF.
Note3: Regulationismeasuredatconstantjunctiontemperature, usingpulsetestingwithalowdutycycle. Changes
in output voltage due to heating effects are covered under the specification for thermal regulation.
Note 4: Line regulation for the SPX1129 is tested at 25°C for IL = 1 mA. For TJ = 125°C, line regulation is guaranteed
by design.
Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below
its nominal value measured at 1V differential.
Date: 5/25/04
SPX1129 400mA Low Dropout Voltage Regulator
©Copyright 2004 Sipex Corporation
2
APPLICATION INFORMATION
External Capacitors
This feature is especially important in applica-
tions like CMOS RAM keep-alive.
The stability of the SPX1129 requires a 2.2µF or
greater capacitor between output and ground.
Oscillation could occur without this capacitor.
Most types of tantalum or aluminum electrolytic
works fine here. For operations of below -25°C
solid tantalum is recommended since the many
aluminum types have electrolytes that freeze at
about -30°C. The ESR of about 5Ω or less and
resonant frequency above 500kHz are the most
important parameters in the value of the capaci-
tor. The capacitor value can be increased with-
out limit.
If there is more than 10 inches of wire between
the input and the AC filter capacitor, or if a
battery is used as the input, then a 0.1µF tanta-
lum or aluminum electrolytic capacitor should
be placed from the input to the ground.
Reducing Output Noise
It may be an advantage to reduce the AC noise
present at the output. One way is to reduce the
regulator bandwidth by increasing the size of
the output capacitor. Increasing the capacitor
from 1µF to 220µF decreases the noise from
430µV to 160µV rms for a 100kHz bandwidth
at 5V output.
The SPX1129, unlike other low dropout regula-
tors will remain stable and in regulation with no
load in addition to the internal voltage divider.
Date: 5/25/04
SPX1129 400mA Low Dropout Voltage Regulator
©Copyright 2004 Sipex Corporation
3
PACKAGE: 3 PIN TO-253
E
A
K
B
S
H
M
L
W
P
-A-
N
G
D
R
TERMINAL 8
C
U
V
DIMENSIONS
in inches
SYMBOL
MIN
.396
MAX
0.406
0.336
0.180
0.036
0.055
0.100 REF
0.620
0.066
.010
A
B
C
D
E
G
H
K
L
0.326
0.170
0.026
0.045
0.100 REF
0.580
0.055
.000
M
N
P
R
S
U
V
W
0.098
.017
0.108
.023
.090
.110
0°
8°
.095
.105
.30 REF
.305 REF
.010
.30 REF
.305 REF
.010
3 Pin TO-263
Date: 5/25/04
SPX1129 400mA Low Dropout Voltage Regulator
©Copyright 2004 Sipex Corporation
4
PACKAGE: 3 PIN TO-220
φ P
E
α (5X)
Q
D
H1
V
E-PIN
R
b1
L
e3
C1
J1
DIMENSIONS
e
in inches
e1
SYMBOL
MIN
0.160
MAX
0.190
A
b
0.025
0.040
C1
D
0.015
0.022
0.560
0.590
E
0.385
0.415
e
0.090
0.110
C
L
e1
e3
F
0.190
0.210
0.045
0.055
0.045
0.055
H1
J1
φ P
Q
0.234
0.258
F
0.090
0.115
A
0.146
0.156
0.103
0.113
L
0.540
0.560
α
3° typ
7° typ
b1
0.450
0.060
R
U
V
0.243 REF
0.300 REF
0.240 REF
6.170 REF
7.620 REF
6.100 REF
3 Pin TO-220
Date: 5/25/04
SPX1129 400mA Low Dropout Voltage Regulator
©Copyright 2004 Sipex Corporation
5
PACKAGE: 3 PIN TO-252
GAUGE PLANE
c
C
SEATING PLANE
c
L
A1
L2
O
(L1)
b
E1
WITH PLATING
E1/2
c
D1
BASE METAL
CONTACT AREA
3 PIN TO-252
JEDEC TO-252
(AA) Variation
Dimensions in inches
MIN NOM MAX
-
-
.005
.024
A1
c
.018
-
-
.205
.170
-
-
D1
E1
H
-
.370
-
.410
.070
.055 .060
.108 REF
.020 BSC
L
L1
3 PIN TO-252
L2
Date: 5/25/04
SPX1129 400mA Low Dropout Voltage Regulator
©Copyright 2004 Sipex Corporation
6
PACKAGE: 3 PIN SOT-223
C
D
b2
C
C
N
E
See detail
A
E1
A
A1
H
1
B
B
GAUGE
PLANE
e
b
SEATING
PLANE
L
0
C
b
3 PIN SOT-223
JEDEC TO-261
(AA) Variation
Dimensions in (mm)
MIN NOM MAX
WITH PLATING
c
A
-
-
-
1.80
0.10
0.02
A1
1.50 1.60 1.70
0.66 0.76 0.84
2.90 3.00 3.10
A2
b
Section B-B
BASE METAL
b2
c
0.23
6.30
0.30
0.35
6.70
6.50
D
c
6.70 7.00 7.30
3.30 3.50 3.70
2.30 BASIC
E
E1
e
b2
Section C-C
e1
4.60 BASIC
L
ø
0.75
0º
-
-
-
10º
3 PIN SOT-223
Date: 5/25/04
SPX1129 400mA Low Dropout Voltage Regulator
©Copyright 2004 Sipex Corporation
7
ORDERING INFORMATION
PART NUMBER ACCURACY
TEMPERATURE OUTPUT VOLTAGE
PACKAGES
SPX1129M3-3.3 ................ 1% ........................ -40°C to 125°C ................... 3.3V ...................3-Pin SOT-223
SPX1129M3-3.3/TR........... 1% ........................ -40°C to 125°C ................... 3.3V ...................3-Pin SOT-223
SPX1129M3-5.0 ................ 1% ........................ -40°C to 125°C ................... 5.0V ...................3-Pin SOT-223
SPX1129M3-5.0/TR........... 1% ........................ -40°C to 125°C ................... 5.0V ...................3-Pin SOT-223
SPX1129R-3.3 ................... 1% ........................ -40°C to 125°C ................... 3.3V ..................... 3-Pin TO-252
SPX1129R-3.3/TR ............. 1% ........................ -40°C to 125°C ................... 3.3V ..................... 3-Pin TO-252
SPX1129R-5.0 ................... 1% ........................ -40°C to 125°C ................... 5.0V ..................... 3-Pin TO-252
SPX1129R-5.0/TR ............. 1% ........................ -40°C to 125°C ................... 5.0V ..................... 3-Pin TO-252
SPX1129T3-3.3 ................. 1% ........................ -40°C to 125°C ................... 3.3V ..................... 3-Pin TO-263
SPX1129T3-3.3/TR ........... 1% ........................ -40°C to 125°C ................... 3.3V ..................... 3-Pin TO-263
SPX1129T3-5.0 ................. 1% ........................ -40°C to 125°C ................... 5.0V ..................... 3-Pin TO-263
SPX1129T3-5.0/TR ........... 1% ........................ -40°C to 125°C ................... 5.0V ..................... 3-Pin TO-263
SPX1129U-3.3 ................... 1% ........................ -40°C to 125°C ................... 3.3V ..................... 3-Pin TO-220
SPX1129U-5.0 ................... 1% ........................ -40°C to 125°C ................... 5.0V ..................... 3-Pin TO-220
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SPX1129T3-5.0/TR = standard; SPX1129T3-L-5.0/TR = lead free
/TR = Tape and Reel
Pack quantity is 500 for TO-263, 2,000 for TO-252 and 2,500 for SOT-223.
Corporation
ANALOGEXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
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: 5/25/04
SPX1129 400mA Low Dropout Voltage Regulator
©Copyright 2004 Sipex Corporation
8
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