■ 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
Now Available in Lead Free Packaging
APPLICATIONS
■ Portable Instrumentation
■ Cordless Telephones
■ Radio Control Systemss
12
V
GND
IN
Front View
■ 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.
Input Voltage26V
Maximum Line Transient RL = 500Ω, 100ms5070V
Reverse Polarity InputVO> -0.3V, RL= 500Ω-15-30V
Voltage, DC
Reverse Polarity Input1% Duty Cycle, τ <100ms-50-80V
Voltage, TransientRL=500Ω
Current Limit150400650mA
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.
Figure 7. Maximum Power Dissipation (SOT89)Figure 8. Maximum Power Dissipation (TO-92)
OUTPUT IMPEDANCE (Ω)
0.1
0.01
10
5.0V
I
= 10mA
O
1
0
306090
FREQUENCY (Hz)
120
150
OUTPUT
OUTPUT
OPERATION DURING LOAD DUMP
70
60
50
40
30
VOLTAGE (V)
20
10
0
~
~
6
4
2
0
VOLTAGE (V)
-2
-100
0
TIME (ms)
C
R
= 100µF
O
= 500Ω
L
300
400200100
500
~
~
Figure 9. Output ImpedanceFigure 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 determine the proper capacitor type and value. The
high quality 100µF aluminum electrolytic covers all general application circuits, this stability
can be obtained with a tantalum electrolytic
value of 47µF.
Another critical point of electrolytic characteristics 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
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output capacitor can be reduced by the factor of
two over the value needed for the entire temperature range.
In most applications the SPX2930 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.
SPX2930M1-3.33%3.3V3 lead SOT-89
SPX2930M1-3.3/TR3%3.3V3 lead SOT-89
SPX2930M1-3.53%3.5V3 lead SOT-89
SPX2930M1-3.5/TR3%3.5V3 lead SOT-89
SPX2930N-3.33%3.3V3 lead TO-92
SPX2930N-3.3/TR3%3.3V3 lead TO-92
SPX2930N-3.53%3.5V3 lead TO-92
SPX2930N-3.5/TR3%3.5V3 lead TO-92
SPX2930U-3.33%3.3V3 Lead TO-220
SPX2930U-3.53%3.5V3 Lead TO-220
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SPX2930N-3.3/TR = standard; SPX2930N-L-3.3/TR = lead free
/TR = Tape and Reel
Pack quantity is 2,000 for TO-92 and 2,500 for SOT-89.
Corporation
ANALOG EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
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.