®
SPX2930
150mA Low Dropout Voltage Regulator
FEATURES
■
3.3V and 3.5V Versions
■
Output Current in Excess of 150 mA
■
Input-Output Differential is 3.0V at
150mA
■
Mirror-Image Insertion Protection
■
Internal Thermal Protection
■
Available in TO-92, TO-220 and SOT-89
Packages
■
Improved Version of the Industry Standard
LM2930
■
Reverse Battery, Internal Short Circuit,
Reverse Transient and 40V Load
Dump Protection
■
3% Output Accurancy at 25°C
TO-92 (N)
SOT-89 (M1)
TO-220 (U)
1
2
3
1
2
3
V
OUT
GND
V
IN
V
IN
GND V
OUT
Bottom View
Top View
1
2
3
V
IN
GND V
OUT
Front View
Now Available in Lead Free Packaging
APPLICATIONS
■
Portable Instrumentation
■
Cordless Telephones
■
Radio Control Systemss
■
Portable Consumer Devices
■
Toys
■
Radio Controlled Systems
DESCRIPTION
The SPX2930 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 SPX2930 features offers very low quiescent currents (0.4 mA), and very
low drop output voltage (50 mV at light load and 300 mV at 150 mA). The SPX2930 is offered
in a 3-pin TO-92, TO-220 and SOT-89 package.
BLOCK DIAGRAM
V
IN
V
OUT
SPX2930
100µF,
1µF
C
1
Gnd
ESR 0.05 to 0.6
ohms
Date: 05/25/04
SPX2930 150mA Low Dropout Voltage Regulator
© Copyright 2002 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
Power Dissipation (note 3) ........................................ Internally limited
Lead Temp (soldering, 5 seconds) ............................................ 260°C
Storage Temperature Range ..................................... -65°C to +150°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
Operating Junction Temperature Range ....................... -40°C to 85°C
TO-92Θ
JA
............................................................................... 110°C/W
TO-220Θ
JA
............................................................................... 55°C/W
ELECTRICAL CHARACTERISTICS
at V
IN
=6V, T
A
= 25°C, I
O
= 10 mA, C
OUT
= 100
µF,
unless otherwise specified. (Note 1)
PARAMETER
CONDITIONS
3.3V Version
Output Voltage (Note 2) 4V < V
IN
<26V,
I
O
= 150 mA over temp.
3.5V Version
Output Voltage (Note 2) 4.5V < V
IN
< 26V,
I
O
= 150mA Over Temp.
All Voltage Options
Long Term Stability
Line Regulation
Load Regulation
Dropout Voltage
Quiescent Current
Min
3.201
3.135
3.395
3.325
Typ
3.300
3.300
3.500
3.500
20
4.0
14
0.05
0.3
0.4
15
Max
3.399
Units
V
3.465
3.605
V
3.675
mV/1000hr
mV
mV
V
mA
Output Noise Voltage
Ripple Rejection
Maximum Operational
Input Voltage
Maximum Line Transient
Reverse Polarity Input
Voltage, DC
Reverse Polarity Input
Voltage, Transient
Current Limit
9V<V
IN
<16V,
4.5V<V
IN<
26V
5mA<I
O
< 150mA
I
O
=10mA
I
O
=150mA
I
O
=10mA, 4.5V<V
IN
<26V
-40°C<Tj<85°C
I
O
=150mA, VI
N
=14V,
T
J
=25°C
10Hz-100kHz, C
OUT
=100µF
F
O
=120Hz
26
50
-15
-50
150
30
50
0.2
0.6
1.0
500
80
µV
RMS
dB
V
V
V
V
650
mA
R
L
= 500Ω, 100ms
V
O
> -0.3V, R
L
= 500Ω
1% Duty Cycle,
τ
<100ms
R
L
=500Ω
70
-30
-80
400
NOTES:
Note 1: See TYPICAL APLICATIONS notes to ensure constant junction temperature, low duty cycle pulse testing used.
Note 2: All limits are at 25°C or over the full operationg junction temperature range of -40°C to +85°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, 100pF discharged through 1.5kΩ.
Date: 05/25/04
SPX2930 150mA Low Dropout Voltage Regulator
© Copyright 2002 Sipex Corporation
2
TYPICAL PERFORMANCE CHARACTERISTICS
30
30
V
IN
= 14V
25
20
QUIESCENT CURRENT (mA)
I
O
= 150mA
QUIESCENT CURRENT (mA)
25
20
15
10
5
0
15
~
~
~
~
I
O
= 50mA
6
4
2
0
-40
0
40
I
O
= 0mA
80
120
0
30
60
90
JUNCTION TEMPERATURE (°C)
OUTPUT CURRENT (mA)
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
SPX2930 3.5
I
O
= 150 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
Date: 05/25/04
Figure 6. Low Voltage Behavior
SPX2930 150mA Low Dropout Voltage Regulator
© Copyright 2002 Sipex Corporation
3
TYPICAL PERFORMANCE CHARACTERISTICS
1.0
2.0
1.6
POWER DISSIPATION (W)
POWER DISSIPATION (W)
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
10
20 30 40
50 60 70
90
0.4" LENGTH
FROMPC BOARD
0.125" LEAD LENGTH
FROM PC BOARD
1.2
0.8
0.4
0.0
0 10 20 30 40 50 60 70 80 90
AMBIENT TEMPERATURE (ºC)
80
AMBIENT TEMPERATURE (ºC)
Figure 7. Maximum Power Dissipation (SOT89)
10
Figure 8. Maximum Power Dissipation (TO-92)
5.0V
I
O
= 10mA
OPERATION DURING LOAD DUMP
OUTPUT IMPEDANCE (Ω)
1
70
60
50
40
30
20
10
0
6
4
2
0
-2
OUTPUT
VOLTAGE (V)
~
~
0.1
OUTPUT
VOLTAGE (V)
C
O
= 100µF
R
L
= 500Ω
~
~
0.01
0
30
60
90
120
150
FREQUENCY (Hz)
-100
0
100
200
TIME (ms)
300
400
500
Figure 9. Output Impedance
Figure 10. Operation During Load Dump
APPLICATION INFORMATION
The SPX2930 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 deter-
mine the proper capacitor type and value. The
high quality 100µF aluminum electrolytic cov-
ers all general application circuits, this stability
can be obtained with a tantalum electrolytic
value of 47µF.
Another critical point of electrolytic character-
istics is its performance over temperature. The
SPX2930 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
Date: 05/25/04
SPX2930 150mA Low Dropout Voltage Regulator
© Copyright 2002 Sipex Corporation
4
output capacitor can be reduced by the factor of
two over the value needed for the entire tem-
perature range.
In most applications the SPX2930 is operating
at 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 required at the input of regula-
tor above the output to keep the power dissipa-
tion and die heating to its minimum. After the
value for the capacitor has been determined for
actual use, the value should be doubled.
Date: 05/25/04
SPX2930 150mA Low Dropout Voltage Regulator
© Copyright 2002 Sipex Corporation
5
电子竞赛
