SPX116
Low Dropout Voltage Three Terminal Regulator
FEATURES
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3.3V and 3.5V Versions
Output Current in Excess of 100 mA
Input-Output Differential of 0.3V at 100mA
Mirror-Image Insertion Protection
Internal Thermal Protection
Available in TO-92 and SOT-89 Packages
Reverse Battery, Internal Short Circuit, Reverse Transient and
Load Dump Protection
Output Accuracy at 25
o
C
Direct Replacement for TK116
APPLICATION
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Portable Instrumentation
Cordless Telephones
Radio Control Systems
Battery Powered Systems
Portable Consumer Devices
Pagers
Cellular Phones
Low Voltage Systems
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PRODUCT DESCRIPTION
The SPX116 is a low power, positive voltage regulator. This device is an excellent choice for use in battery-powered applications such
as cordless telephones, radio control systems, and portable computers. The SPX116 features offers very low quiescent currents
(0.4 mA), and very low drop output voltage (50 mV at light load and 300 mV at 100 mA). The SPX116 is a direct replacement for the
TK116. The SPX116 is offered in a 3-pin TO-92 and SOT-89 package.
TYPICAL APPLICATION
V
IN
V
OUT
SPX116
1µF
C
1
Gnd
4.7µF
Rev. 8/21/01
SPX116 Low Dropout Voltage Three Terminal Regulator
1
©Copyright 2001 Sipex Corporation
SPX116
ABSOLUTE MAXIMUM RATINGS
Power Dissipation (note 3)
Internally limited
Lead Temp. (soldering, 5 Seconds)...................... 260¡C
Storage Temperature Range ................. -65¡C to +150¡C
Maximum Junction Temperature....................... +125¡C
Input Supply Voltage Range.......................-0.3 to +30V
ESD Rating (note 4) ............................................ 2kV
RECOMMENDED OPERATING CONSITIONS
Input Supply Voltage Range ............................. 3.0 to 26V
Maximum Load Current ....................................... 180mA
Operating Junction Temperature Range........... -40
o
C to 125
o
C
TO-92
Θ
JA
.........................................................160
o
C/W
SOT-89
Θ
JA
.......................................................110
o
C/W
ELECTRICAL CHARACTERISTICS
at V
IN
=6V, T
A
= 25¡C, I
O
= 1mA, C
OUT
= 4.7µF, unless otherwise specified.
( Note 1)
Parameter
Output Voltage (note 2)
Output Voltage (note 2)
Line Regulation
Load Regulation
Dropout Voltage
Quiescent Current
Output Noise Voltage
Ripple Rejection
Maximum Operational Input
Voltage
Current Limit
Note 1:
See
TYPICAL APPLICATIONS
notes
Conditions
Min
4V < V
IN
< 14V, I
O
= 10 mA.
4V < V
IN
< 14V, I
O
= 10 mA.
9V < V
IN
< 14V
4.5V < V
IN
< 14V,
10 mA < I
O
< 100 mA
I
O
=10 mA
I
O
=100 mA
I
O
< 10 mA, 4.5V < V
IN
< 26V
I
O
= 100 mA, V
IN
= 14V,
10Hz-100kHz, C
OUT
=100µF
F
O
= 120Hz
14
150
3.201
3.395
SPX116
Typ
3.300
3.500
4.0
14
0.05
0.3
0.4
15
500
80
Units
Max
3.399
3.605
V
V
mV
mV
V
mA
µVrms
dB
V
400
mA
to ensure constant junction temperature, low duty cycle pulse testing used.
Note 2:
All limits are at 25°C; operation is guaranteed over the full operating junction temperature range of -40°C to +125°C.
Note 3:
The maximum power dissipation is a function of maximum junction temperature, total thermal resistance, and ambient temperature.
Note 4:
Human body model, 100 pF discharged through 1.5 kΩ.
Rev. 8/21/01
SPX116 Low Dropout Voltage Three Terminal Regulator
2
©Copyright 2001 Sipex Corporation
SPX116
TYPICAL CHARACTERISTICS
25
20
QUIESCENT CURRENT (mA)
I
O
=100mA
30
25
QUIESCENT CURRENT (mA)
V
IN
= 14V
15
10
~
~
~
~
I
O
= 50mA
20
15
10
5
0
0
30
60
90
OUTPUT CURRENT (mA)
6
4
2
0
-40
0
I
O
= 0mA
40
80
120
JUNCTION TEMPERATURE (°C)
Figure 1. Quiescent Current
0.6
INPUT OUTPUT DIFFERENTIAL (V)
Figure 2. Quiescent Current
0.6
INPUT OUTPUT DIFFERENTIAL (V)
0.5
0.4
0.3
0.2
0.1
0
0
40
80
120
JUNCTION TEMPERATURE (ºC)
I
O
= 50mA
I
O
= 10mA
I
O
= 150mA
0.5
0.4
0.3
0.2
0.1
0
0
50
OUTPUT CURRENT (mA)
100
Figure 3. Dropout Voltage
800
500
OUTPUT CURRENT (mA)
Figure 4. Dropout Voltage
6.0
SPX116 3.5
I
O
= 100 mA
T
J
= 25ºC
5.0
OUTPUT VOLTAGE (V)
400
300
200
100
0
0
10
T
J
= 85ºC
T
J
= -40ºC
4.0
3.0
2.0
1.0
20
30
2.0
3.0
4.0
5.0
6.0
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Figure 5. Peak Output Current
Figure 6. Low Voltage Behavior
Rev. 8/21/01
SPX116 Low Dropout Voltage Three Terminal Regulator
2
©Copyright 2001 Sipex Corporation
SPX116
TYPICAL CHARACTERISTICS
Continued
1.0
2.0
1.6
1.2
0.8
0.4
0.0
0 10 20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE (ºC)
0.9
0.8
POWER DISSIPATION (W)
POWER DISSIPATION (W)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
10 20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE (ºC)
0.4" LENGTH
FROMPC BOARD
0.125" LEAD LENGTH
FROM PC BOARD
Figure 7. Maximum Power Dissipation (SOT89)
Figure 8. Maximum Power Dissipation (TO-92)
10
OPERATION DURING LOAD DUMP
5.0V
I
O
= 10mA
OUTPUT
VOLTAGE (V)
OUTPUT IMPEDANCE (
Ω)
1
70
60
50
40
30
20
10
0
6
4
2
0
-2
~
~
0.1
OUTPUT
VOLTAGE (V)
C
O
= 100µF
R
L
= 500
Ω
~
~
0.01
0
30
60
90
120
150
FREQUENCY (Hz)
-100
0
100
200
300
400
500
TIME (ms)
Figure 9. Output Impedance
Figure 10. Operation During Load Dump
Rev. 8/21/01
SPX116 Low Dropout Voltage Three Terminal Regulator
3
©Copyright 2001 Sipex Corporation
SPX116
APPLICATION INFORMATION
The SPX116 requires an output capacitor for device stability.
The value required varies greatly depending upon the
application circuit and other factors. The high frequency
characteristics of electrolytic capacitors depend greatly on the
type and also on the manufacturer. Sometimes only bench
testing is the only means to determine the proper capacitor
type and value. Stability can be obtained with a tantalum or
ceramic capacitor value of 4.7
µF
or greater.
Another critical point of electrolytic characteristics is its
performance over temperature. The SPX116 is designed to
operate starting at -40°C which may not be true in the case of
electrolytic. Higher temperatures generally no problem. The
electrolytic. type in aluminum will freeze around -30°C. This
could cause an oscillation at output of regulator. At a lower
temperature requirement by many applications the capacitor
should maintain its performance. So as a result, for an
application which regulator junction temperature does not
exceed 25°C, the output capacitor can be reduced by the
factor of two over the value needed for the entire
temperature range.
In most applications the SPX116 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 100mA. The value decreases with higher output voltages,
since the internal loop gain is reduced.
The worst case occurs at the lower temperature and
maximum operating currents, the entire circuit and the
electrolytic, should be cooled down to the minimum
temperature. The minimum of 0.6 volts required at the input
of regulator above the output to keep the power dissipation
and die heating to its minimum. After the value for the
capacitor has been determined for actual use, the value
should be doubled.
Rev. 8/21/01
SPX116 Low Dropout Voltage Three Terminal Regulator
4
©Copyright 2001 Sipex Corporation
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