SPX1117
800mA Low Dropout Voltage Regulator
FEATURES
■
Guaranteed 0.8A Output Current
■
Guaranteed 1A Peak Current
■
Three Terminal Adjustable or Fixed
1.5V, 1.8V, 2.5V, 2.85V, 3.0V,
3.3V and 5V
■
Low Quiescent Current
■
Low Dropout Voltage of 1.1V at 0.8A
■
0.1% Line and 0.2% Load Regulation
■
Stable with 2.2uF Ceramic Capacitor
■
Overcurrent and Thermal Protection
■
Lead Free, RoHS Compliant Packages:
SOT-223,TO-252, TO-220, and TO-263
DESCRIPTION
The SPX1117 is a low power positive-voltage regulator designed to satisfy moderate power
requirements with a cost effective, small footprint solution. This device is an excellent choice for
use in battery-powered applications and portable computers. The SPX1117 features very low
quiescent current and a low dropout voltage of 1.1V at a full load. As output current decreases,
quiescent current flows into the load, increasing efficiency. SPX1117 is available in adjustable
or fixed 1.5V, 1.8V, 2.5V,2.5V, 2.85V, 3.0V, 3.3V and 5V output voltages.
The SPX1117 is offered in several 3-pin surface mount packages: SOT-223, TO-252, TO-220
and TO-263. An output capacitor of 10µF provides unconditional stability while a smaller 2.2µF
capacitor is sufficient for most applications.
FUNCTIONAL DIAGRAM
V
IN
APPLICATIONS
■
Desktop PC's Servers
■
SCSI-II Active Terminator
■
Portable/ Palm Top / Notebook
Computers
■
Cordless Phones
■
Battery Chargers
■
Disk Drives
■
Portable Consumer Equipment
■
Portable Instrumentation
■
SMPS Post-Regulator
Current Limit
+
-
V
OUT
I
CL
AMP
-
+
1.25V
Thermal Limit
+
–
I
TL
V
REF
ADJ/GND
I
ADJ
~ 50µA
–
Apr 20-07 Rev B
SPX1117 800mA Low Dropout Voltage Regulator
© 2007 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 .................................................... +20V
Input to Output Voltage ................................................ 18.8V
ESD Rating.................................................................2kV min
These are sterss 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.
ELECTRICAL CHARACTERISTICS
T
A
= 25°C, C
IN
= C
OUT
= 10µF, unless otherwise specified. The Boldface applies over the full operating temperature range.
PARAMETER
1.5V Version
Output Voltage
1.8V Version
Output Voltage
2.5V Version
Output Voltage
2.85V Version
Output Voltage
3.00V Version
Output Voltage
3.30V Version
Output Voltage
5V Version
Output Voltage
All Voltage Options
Reference Voltage
Output Voltage
Temperature Stability
Line Regulation
(Note 1)
Load Regulation
(Note 1)
Dropout Voltage
(Note 2)
Quiescent Current
V
INMIN
≤V
IN
≤
12V,V
OUT
=Fixed/Adj,
I
OUT
=5mA
5mA≤I
OUT
≤
800mA,V
OUT
=Fixed/Adj
I
OUT
=100mA
I
OUT
=500mA
I
OUT
=800mA
4.25V≤V
IN
≤
6.5V
SPX1117 800mA Low Dropout Voltage Regulator
CONDITIONS
MIN
TYP
MAX
UNITS
I
OUT
= 5mA, V
IN
=3.0V, T
J
= 25ºC
5mA
≤
I
OUT
≤
800mA, 2.9V
≤
V
IN
≤
10V
I
OUT
= 5mA, V
IN
=3.3V, T
J
= 25ºC
5mA
≤
I
OUT
≤
800mA, 3.2V
≤
V
IN
≤
10V
I
OUT
= 5mA, V
IN
=4.0V, T
J
= 25ºC
5mA
≤
I
OUT
≤
800mA, 3.9V
≤
V
IN
≤
10V
I
OUT
= 5mA, V
IN
=4.35V, T
J
= 25ºC
5mA
≤
I
OUT
≤
800mA, 4.25V
≤
V
IN
≤
10V
I
OUT
= 5mA, V
IN
=4.5V, T
J
= 25ºC
5mA
≤
I
OUT
≤
800mA, 4.4V
≤
V
IN
≤
10V
I
OUT
= 5mA, V
IN
=4.8V, T
J
= 25ºC
5mA
≤
I
OUT
≤
800mA, 4.7V
≤
V
IN
≤
10V
I
OUT
= 5mA, V
IN
=6.5V
5mA
≤
I
OUT
≤
800mA, 6.4V
≤
V
IN
≤
12V
I
OUT
=5mA, (V
IN
- V
OUT
)= 2V, T
J
= 25ºC
5mA≤I
OUT
≤
800mA, 1.4V≤(V
IN
-V
OUT
)≤ 10V
1.485
1.470
1.500
1.515
1.530
V
1.782
1.764
1.800
1.818
1.836
V
2.475
2.450
2.500
2.525
2.550
V
2.821
2.793
2.850
2.878
2.907
V
2.970
2.940
3.000
3.030
3.060
V
3.267
3.234
3.300
3.333
3.366
V
4.950
4.90
5
5.050
5.10
V
1.238
1.225
1.250
0.3
1.262
1.270
V
%
3
6
1.00
1.05
1.10
5
7
12
1.20
1.25
1.30
10
mV
mV
V
mA
Apr 20-07 Rev B
© 2007 Sipex Corporation
2
ELECTRICAL CHARACTERISTICS
T
A
= 25°C, C
IN
= C
OUT
= 10µF, unless otherwise specified. The Boldface applies over the full operating temperature range.
PARAMETER
Adjust Pin Current
Current Limit
Thermal Regulation
Ripple Rejection
Long Term Stability
RMS Output Noise
CONDITIONS
(V
IN
-V
OUT
)=5V
25°C, 30mS pulse
f
RIPPLE
=120Hz, (V
IN
-V
OUT
)=2V,
V
RIPPLE
=1V
PP
125°C, 1000Hrs
% of V
OUT
, 10Hz≤f≤10kHz
60
MIN
1.0
TYP
50
1.5
0.01
75
0.03
0.003
MAX
120
2.0
0.1
UNITS
µA
A
%/W
dB
%
%
*Note 1 - For fixed option, V
INMIN
= V
OUT
+ 1.5V
- For adjustable option, V
INMIN
= V
IN
- V
OUT
= 1.4V
*Note 2 - Dropout voltage is the input voltage minus output voltage that produces a 1% decrease in output voltage with respect
to the nominal output voltage at V
IN
= V
OUT
+ 1.5V
Apr 20-07 Rev B
SPX1117 800mA Low Dropout Voltage Regulator
© 2007 Sipex Corporation
3
TYPICAL PERFORMANCE CHARACTERISTICS
3.320
3.315
3.310
3.305
3.300
3.295
3.290
3.285
3.280
10
100
Output Current (mA)
1000
3.325
3.320
Vout (V)
Output Voltage
3.315
3.310
3.305
3.300
4.5
6.5
8.5
10.5
Vin (V)
12.5
14.5
Figure 1. Load Regulation for SPX1117M3-3.3;
V
IN
=4.8V
Figure 2. Line Regulation for SPX1117M3-3.3;
I
OUT
=10mA
Dropout Voltage (V)
1.3
1.2
1.1
1.0
0.9
100
200
300
400
500
600
700
800
900
1000
Current Limit (A)
2.00
1.50
1.00
0.50
0.00
-50
-25
0
25
50
o
75
100
125
Io (mA)
Temp (
C)
Figure 4. Current Limit for SP1117M3-3.3; V
IN
=4.8V,
C
IN
=C
OUT
=1µF, I
OUT
pulsed from 10mA to Current
Limit
Figure 3. Dropout Voltage vs Output Current for
SPX1117M3-3.3; V
IN
=4.8V, C
OUT
=2.2µF
Output Deviation
(mV)
100
0
125°C
22µF
1.275
1.27
1.265
1.26
1.255
1.25
1.245
1.24
1.235
1.23
1.225
-50
1.25v Adj
-100
1.5
Indicating Current
Limit Starts
Vout (V)
Output Current
(A)
1.0
0.5
0
V = 4.0V
V =3.3V Fixed
1 =10mA
C =1µF Tan Cap
C =2.2µF Tan Cap
IN
IN
O
IN
OUT
-30
-10
10
30
50
70
90
110
130
0
0.1
0.2
0.3
0.4 0.5 0.6
Time (ms)
0.7
0.8 0.9
1.0
Temp (C)
Figure 5. Current Limit for SPX1117M3-3.3, Output
Voltage Deviation with I
OUT
=10mA to 1A Step
Figure 6. V
OUT
vs Temperature, V
IN
=2.5V, I
OUT
=10mA
Apr 20-07 Rev B
SPX1117 800mA Low Dropout Voltage Regulator
© 2007 Sipex Corporation
4
TYPICAL PERFORMANCE CHARACTERISTICS: Continued
1.53
1.52
1.51
Vout (V)
1.84
1.5v Adj
1.5v Fixed
Vout (V)
1.83
1.82
1.81
1.8
1.79
1.78
1.77
1.8v Adj
1.8v Fixed
1.5
1.49
1.48
1.47
-50
-30
-10
10
30
50
Temp (C)
70
90
110
130
1.76
-50
-30
-10
10
30
50
Temp (C)
70
90
110
130
Figure 7. V
IN
=3.0V, I
OUT
=10mA
Figure 8. V
IN
=3.3V, I
OUT
=10mA
2.92
2.5v Adj
2.5v Fixed
Vout (V)
2.55
2.54
2.53
2.52
2.51
2.5
2.49
2.48
2.47
2.46
2.45
-50
2.9
2.88
2.86
2.84
2.82
2.8
-50
2.85v Adj
2.85v Fixed
Vout (V)
-30
-10
10
30
50
Temp (C)
70
90
110
130
-30
-10
10
30
50
Temp (C)
70
90
110
130
Figure 9. V
IN
=4.0V, I
OUT
=10mA
Figure 10. V
IN
=4.85V, I
OUT
=10mA
3.06
3.04
3.02
3v Adj
3v Fixed
Vout (V)
3.38
3.36
3.34
3.32
3.3
3.28
-30
-10
10
30
50
70
90
110
130
3.3v Adj
3.3v Fixed
Vout (V)
3
2.98
2.96
2.94
-50
3.26
-50
-30
-10
10
30
50
70
90
110
130
Temp (C)
Temp (C)
Figure 11. V
IN
=4.85V, I
OUT
=10mA
Output Voltage Change, mV
6
4
2
Figure 12. V
IN
=5.0V, I
OUT
=10mA
1.816
1.815
1.814
1.813
1.812
1.811
1.81
1.809
1.808
1.807
1.806
-40
-20
0
20
40
Ambient Temperature, *C
60
800mA
400mA
10mA
-2
-4
-6
-8
-40
-20
0
20
40
60
80
100
Ambient Temperature,*C
V out, V
0
80
100
Figure 13. Line Regulation vs Temperature. V
OUT
=1.8V
(adjustable), V
IN
= 3.3V
0.4
0.3
-40°C
+25°C
+85°C
Figure 14. Output Voltage vs Temperature at different
Current Loads, V
IN
=3.3V, V
OUT
= 1.8V Adjustable
Vout tolerance,%
0.2
0.1
0
-0.1
-0.2
-0.3
3
4
Vin, V
5
6
Figure 15. Line Regulation at I
LOAD
=800mA over
Temperature, V
OUT
=1.8V adjustable
Apr 20-07 Rev B
SPX1117 800mA Low Dropout Voltage Regulator
© 2007 Sipex Corporation
5
嵌入式系统
