SPX1121N-5.0-L/TR [SIPEX]
Regulator,;
| 型号： | SPX1121N-5.0-L/TR |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | Regulator, 线性稳压器IC 调节器 电源电路 输出元件 |
| 文件： | 总9页 (文件大小：82K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
SPX1121
150mA Low Dropout Voltage Regulator
FEATURES
■ 5.0V and 3.3V output versions
■ 1% Output Accuracy
■ Very Low Quiescent Current
■ Low Dropout: 300mV @ 150mA
■ Very Tight Load & Line Regulation
■ Very Low Temperature Coefficient
■ Current and Thermal Limiting
■ Requires only 1µF for Stability
■ Equivalent Replacement for LT1121
IIN
5V
VOUT
OUT
IN
IL
SPX1121
LOAD
+
+
2.2µF
0.1µF
GND
IG
IIN = IL + IG
■ Industry Standard SOT-223 and TO-92
3 lead packages
Figure 1. Fixed +5V Regulator Circuit
DESCRIPTION
TheSPX1121isalowpowervoltageregulator. Itisanexcellentchoiceforuseinbattery-powered
applications such as cordless telephones, radio control systems, and portable computers. The
SPX1121 features very low quiescent current and low dropout voltage (typ. 20mV at 100µA and
300mV at 150mA). A tight initial tolerance (1%), extremely good load and line regulation (0.05%
typ.), and very low output temperature coefficient (20 ppm/°C typ.), make the SPX1121 useful
as a low power voltage reference.
PACKAGES
SOT-223 Package (M3)
TO-92 (N)
1
2
3
SPX1121
1
2
3
INPUT
OUTPUT
GND
GND
V
V
IN
OUT
Bottom View
Front View
Rev. 10/11/02
SPX1121 150mA Low DropoutVoltage Regulator
© Copyright 2002 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
Power Dissipation........................................Internally Limited
Lead Temperature (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...........................................-0.3V to +30V
ESD Rating................................................................2kV min
ELECTRICAL CHARACTERISTICS VIN=6V, IL=100µA, CL=1µF (NOTE 2), TA = 25°C, unless otherwise specified. Boldface
applies over the full operating temperature ranges.
PARAMETER
3.3 V Versions
Output Voltage
CONDITIONS
MIN.
TYP.
MAX
UNIT
TJ=25°C
3.267
3.300
3.333
V
1mA ≤IL ≤150 mA
3.217
3.300
3.382
5 V Versions
Output Voltage
TJ = 25°C
4.950
5.000
5.050
V
1 mA ≤IL ≤150 mA
4.880
5.000
5.120
All Voltage Options
Output Voltage
(NOTE 1)
20
100
ppm/°C
Temperature Coefficient
Line Regulation (NOTE 3)
Load Regulation (NOTE 3)
6V≤VIN≤30V (NOTE 4)
100 µA≤IL≤150 mA
0.03
0.04
0.20
0.60
%
%
Dropout Voltage
(NOTE 5)
IL = 100µA
IL = 1mA
IL = 100 mA
IL = 150 mA
20
mV
110
270
300
550
170
Ground Current
IL = 100µA
IL = 1mA
IL = 10mA
100
110
350
µA
IL = 50mA
IL = 100 mA
IL = 150 mA
1
3
5
mA
6
10
Current Limit
VOUT = 0
230
500
mA
Thermal Regulation
0.05
0.20
%/W
Output Noise,
10Hz to 100kHz
CL = 1µF
CL = 200 µF
430
160
µV rms
µV rms
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 guaranteed for TJ = 25°C, VIN = 6V, IL = 100µA and CL = 1µF.
NOTE 3: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle.
Changes in output voltage due to heating effects are covered under the specification for thermal
regulation.
NOTE 4: Line regulation for the SPX1121 is tested at IL = 1mA. For TJ = 125°C, line regulation is guaranteed
by design. See typical performance characteristics for line regulation versus temperature and load
current.
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.
Rev. 10/11/02
SPX1121 150mA Low DropoutVoltage Regulator
© Copyright 2002 Sipex Corporation
2
TYPICAL PERFORMANCE CHARACTERISTICS
10
6
250
225
200
5
4
RL = 50kΩ
175
150
1
=50kΩ
RL
3
2
125
RL=50kΩ
RL
=
100
75
0.1
50
25
0
1
0
0.01
0
1
2
3
4
5
6
7
8
9
10
0.1
1
10
100
0
1
2
3
4
5
6
INPUT VOLTAGE (VOLTS)
LOAD CURRENT (mA)
INPUT VOLTAGE (VOLTS)
Input Current
Ground Current vs. Load Current
Dropout Characteristics
6
320
280
160
150
140
130
120
110
100
90
RL=50
Ω
240
200
160
VOUT = 5V
5
IL= 1mA
IL= 0
VIN = 6V
IL = 100mA
80
70
120
80
60
50
40
30
20
10
0
4
3
40
0
0
1
2
3
4
5
6
7
8
-75
-25
0
25 50 75 100 125 150
-50
0
1
2
3
4
5
6
7
8
9 10
INPUT VOLTAGE (VOLTS)
TEMPERATURE (ºC)
INPUT VOLTAGE (VOLTS)
Ground Current
Ground Current vs. Input Voltage
Input Current
190
170
150
130
8
7
6
5
4
IL=100mA
VIN =6V
IL =100uA
3
2
1
0
0
-75 -50 -25
0
25 50 75 100 125 150
1
2
3
4
5
6
7
8
TEMPERATURE (ºC)
INPUT VOLTAGE
Ground Current
Quiescent Current
Rev. 10/11/02
SPX1121 150mA Low DropoutVoltage Regulator
© Copyright 2002 Sipex Corporation
3
TYPICAL PERFORMANCE CHARACTERISTICS
500
240
230
500
IL = 150mA
400
300
400
300
220
210
200
190
180
200
~
200
~
40
20
0
TJ = 25ºC
100
0
IL = 100µA
170
100µA
1mA
OUTPUT CURRENT
10mA
100mA
-75 -50 -25
0
25 50 75 100 125 150
-75 -50 -25
0
25 50 75 100 125 150
TEMPERATURE (ºC)
TEMPERATURE (ºC)
Drop-Out Voltage
Drop-Out Voltage
Short Circuit Current
10
90
80
70
60
50
100
mV
IO = 100µA
5
50
IO = 1mA
2
mV
IL = 0
IO = 100mA
0
1
0.5
0.2
CL = 1µF
IL = 1mA
VOUT = 5V
-50
mV
VOUT = 5V
CL = 1µF
~
~
0.1
0.05
40
8V
6V
IL = 100µA
CL = 1µF
VIN = 6V
30
VOUT = 5V
0.02
0.01
20
4V
10 1
10 2
10 3 10 4
FREQUENCY (Hz)
10 5
10 6
10
100
1K
10K
100K
1M
0
200
400
600
800
FREQUENCY (Hz)
TIME(µs)
Output Impedance
Ripple Rejection
Line Transient Response
90
80
80
2.3
I
L = 50mA
70
60
50
40
30
20
10
CL= 1µF
VIN = 6V
VOUT = 5V
70
60
50
40
30
20
IL = 1mA
IL = 100mA
2.1
1.9
CL = 1µF
VIN = 6V
VOUT = 5V
IL = 10mA
103
1.7
10 1
10 2
10 3
10 4
10 5
10 6
10 1
10 2
10 4
10 5
106
-75 -50 -25
0
25 50 75 100 125 150
FREQUENCY (Hz)
FREQUENCY (Hz)
TEMPERATURE
Ripple Rejection
Ripple Rejection
Minimum Operating Voltage
Rev. 10/11/02
SPX1121 150mA Low DropoutVoltage Regulator
© Copyright 2002 Sipex Corporation
4
TYPICAL PERFORMANCE CHARACTERISTICS (CONT.)
120
80
60
40
250
200
150
TO-92 PACKAGE
0.25" LEADS SOLDERED
TO PC BOARD
100
80
20
0
100
50
Vout=5V
TJMAX = 125 ºC
0
-20
-40
-60
60
CL = 10µF
VOUT = 5V
-50
-100
CL = 1µF
VOUT = 5V
TA=25 ºC
40
20
0
~
~
~
~
100
mA
TA = 85 ºC
100
µA
100
100
µA
µA
0
1
2
3
4
5
0
5
10
15
20
25
30
0
4
8
12
16
20
TIME (ms)
TIME (ms)
INPUT VOLTAGE (V)
Load Transient Response
Maxium Rated Output
Load Transient Response
30
5
25
20
15
10
5
IL = 100µA
IL = 1mA
4
2
TJ = 150 ºC
0
0
~
~
-2
1
10
5
~
~
TJ = 125 ºC
IL = 100µA
1.25W
0
-5
-10
0
-1
5
10
15
20
25
30
0
10
20
30
40
50
INPUT VOLTAGE (V)
TIME (µs)
Thermal Response
Line Regulation
Rev. 10/11/02
SPX1121 150mA Low DropoutVoltage Regulator
© Copyright 2002 Sipex Corporation
5
APPLICATIONS HINTS
REDUCING OUTPUT NOISE
EXTERNAL CAPACITORS
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 220 µF decreases the noise from
430µV to 160µVRMS for a 100kHz bandwidth
at 5V output.
The stability of the SPX1121 requires a 1µF or
greater capacitor between output and ground.
Oscillation could occur without this capacitor.
Most types of tantalum or aluminum electro-
lytic works fine here. For operations 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 capacitor. The capacitors value may be in-
creased without limit.
The SPX1121 unlike other low dropout regula-
tors will remain stable and in regulation with no
load in addition to the internal voltage divider.
This feature is especially important in applica-
tions like CMOS RAM keep-alive.
If there is more than 10 inches of wire between
the input and the AC filter capacitor or if a
batteryisusedastheinputthena0.1µFtantalum
or aluminum electrolytic capacitor should be
placed from the input to the ground.
Rev. 10/11/02
SPX1121 150mA Low DropoutVoltage Regulator
© Copyright 2002 Sipex Corporation
6
PACKAGE:
3 Lead SOT-223
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
10°C
0.033
0.025
Rev. 10/11/02
SPX1121 150mA Low DropoutVoltage Regulator
© Copyright 2002 Sipex Corporation
7
PACKAGE: TO-92
0.090 (2.286) Radius typ.
2
1
3
0.145 (3.683)
0.135 (3.429)
0.055 (1.397)
0.045 (1.143)
10° typ.
BOTTOM VIEW
0.085 (2.159) Diameter
0.185 (4.699)
0.045 (1.143)
5° typ.
5° typ.
0.185 (4.699)
0.175 (4.445)
0.090 (2.286) typ.
Seating Plane
0.025 (0.635) Max
Uncontrolled
Lead Diameter
0.500 (12.70) Min.
0.016 (0.406)
0.014 (0.356)
0.0155 (0.3937)
0.0145 (0.3683)
0.055 (1.397)
0.045 (1.143)
0.105 (2.667)
0.095 (2.413)
Rev. 10/11/02
SPX1121 150mA Low DropoutVoltage Regulator
© Copyright 2002 Sipex Corporation
8
ORDERING INFORMATION
PART NUMBER ACCURACY OUTPUT VOLTAGE
PACKAGE
SPX1121N-3.3 .....................1% .................... 3.3V ................... 3 lead TO-92
SPX1121N-5.0 .....................1% .................... 5.0V ................... 3 lead TO-92
SPX1121M3-3.3 ...................1% .................... 3.3V ................... 3 lead SOT-223
SPX1121M3-5.0 ...................1% .................... 5.0V ................... 3 lead SOT-223
Please consult the factory for pricing and availability on a Tape-On-Reel option.
Co rp o ra tio n
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Sales Office
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
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.
Rev. 10/11/02
SPX1121 150mA Low DropoutVoltage Regulator
© Copyright 2002 Sipex Corporation
9
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