SPX116
Low Dropout Voltage Three Terminal Regulator
TO-92 (N)
SOT-89 (M1)
3
FEATURES
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 3% at 25°C
Direct Replacement for TK116
GND
1
2
1
2
3
V
OUT
GND
V
IN
V
IN
GND
V
OUT
Bottom View
Top View
Now Available in Lead Free Packaging
APPLICATIONS
Portable Instrumentation
Cordless Telephones
Radio Control Systems
Battery Powered Systems
Portable Consumer Devices
Pagers
Cellular Phones
Low Voltage Systems
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 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. 2/3/06
SPX116 Low Dropout Voltage Three Terminal Regulator
© Copyright 2006 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
Power Dissipation (Note 3) ...................... Internally Limited
Lead Temperature (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 min
RECOMMENDED OPERATING CONDITIONS
Input Supply Voltage Range ................................. 3.0 to 14V
Maximum Load Current ............................................. 180mA
Operation Junction Temperature Range ....... -40°C to 125°C
TO-92
Θ
JA
............................................................ 131.9°C/W
SOT-89
Θ
JA
.......................................................... 107.0°C/W
ELECTRICAL CHARACTERISTICS
at V
IN
= 6V, T
A
= 25°C, I
O
= 1mA, C
OUT
= 4.7µF, unless otherwise specified.
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
CONDITIONS
4V < VI
N
< 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
400
MIN
3.201
3.395
TYP
SPX116
3.300
3.500
4.0
mV
14
0.05
0.3
0.4
15
500
80
mV
V
mA
µVrms
dB
V
mA
3.399
3.605
V
V
MAX
UNITS
NOTES:
Note 1: See TYPICAL APPLICATIONS notes 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.
TYPICAL PERFORMANCE CHARACTERISTICS
25
30
V
IN
= 14V
20
QUIESCENT CURRENT (mA)
I
O
=100mA
QUIESCENT CURRENT (mA)
25
20
15
10
5
0
0
30
60
90
OUTPUT CURRENT (mA)
15
10
~
~
~
~
I
O
= 50mA
6
4
2
0
-40
0
I
O
= 0mA
40
80
120
JUNCTION TEMPERATURE (°C)
Figure 1. Quiescent Current
Figure 2. Quiescent Current
Rev. 2/3/06
SPX116 Low Dropout Voltage Three Terminal Regulator
© Copyright 2006 Sipex Corporation
2
TYPICAL PERFORMANCE
CHARACTERISTICS (continued)
0.6
INPUT OUTPUT DIFFERENTIAL (V)
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
Figure 4. Dropout Voltage
800
500
OUTPUT CURRENT (mA)
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
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)
© Copyright 2006 Sipex Corporation
Rev. 2/3/06
SPX116 Low Dropout Voltage Three Terminal Regulator
3
TYPICAL PERFORMANCE
CHARACTERISTICS (continued)
10
OPERATION DURING LOAD DUMP
5.0V
I
O
= 10mA
OUTPUT IMPEDANCE (
Ω)
1
70
60
50
40
30
20
10
0
6
4
2
0
-2
OUTPUT
VOLTAGE (V)
~
~
0.01
0
30
60
90
120
150
FREQUENCY (Hz)
OUTPUT
VOLTAGE (V)
0.1
C
O
= 100µF
R
L
= 500
Ω
~
~
-100
0
100
200
300
400
500
TIME (ms)
Figure 9. Output Impedance
Figure 10. Operation During Load Dump
APPLICATION INFORMATION
The SPX116 requires an output capacitor for
device stability. The capacitor 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 manufac-
turer. Sometimes 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 character-
istics is the performance over temperature. The
SPX116 is designed to operate starting at -40°C
which may not be true in the case of electrolytic
components. Higher temperatures generally
present no problems for electrolytics. The
electrolytic type in aluminum will freeze at
about -30°C. This could cause an oscillation at
the output of the regulator. At a lower tempera-
ture requirement by many applications the ca-
pacitor should maintain its performance. So as
a result, for an application in which the regula-
tor junction temperature does not exceed 25°C,
the output capacitor can be reduced by a factor
of two over the value needed for the entire
temperature range.
In most applications the SPX116 is operating at
a few milliamps. In these applications, the out-
put 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 mini-
mum of 0.6 volts is required at the input of the
regulator above the output to keep the power
dissipation and die heating to its minimum.
After the value for the capacitor has been deter-
mined for actual use, the value should be doubled.
Rev. 2/3/06
SPX116 Low Dropout Voltage Three Terminal Regulator
© Copyright 2006 Sipex Corporation
4
PACKAGE: 3PIN TO-92
L
e
e1
W
D
A
b
S1
R
E
a(2x)
3 Pin
SYMBOL
Dimensions in Inches:
Controlling Dimension
MIN
0.170
0.014
0.130
0.095
0.045
0.500
0.085
0.045
0.016
0.175
4º
NOM
-
-
-
-
-
-
-
-
-
-
-
TO-92
Dimensions in Millimeters
Conversion Factor:
1 Inch = 25.40 mm
MIN
4.32
0.36
3.30
2.41
1.14
12.70
2.16
1.14
0.41
4.45
4º
NOM
-
-
-
-
-
-
-
-
-
-
-
MAX
4.95
0.51
3.94
2.67
1.40
15.49
2.41
1.52
0.56
4.95
6º
A
b
E
e
e1
L
R
S1
W
D
α
MAX
0.195
0.020
0.155
0.105
0.055
0.610
0.095
0.060
0.022
0.195
6º
SIPEX Pkg Signoff Date/Rev:
JL Sept23-05 / RevA
Rev. 2/3/06
SPX116 Low Dropout Voltage Three Terminal Regulator
© Copyright 2006 Sipex Corporation
5
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