SPX29300/01/02/03
®
3A High Current, Low Dropout Voltage Regulator
Adjustable & Fixed Output, Fast Response Time
FEATURES
■ Adjustable Output Down To 1.25V
■ 1% Output Accuracy
■ Output Current of 3A
■ Low Dropout Voltage of 450mV @ 3A
■ Extremely Tight Load and Line
Regulation
■ Extremely Fast Transient Response
■ Reverse-Battery Protection
■ Zero Current Shutdown (5 pin version)
■ Error Flag Signal Output for Out of
Regulation State (5 pin version)
■ Standard TO-220 and TO-263
Packages
SPX29300
3 Pin TO-263
1
VIN
2
3
GND VOUT
Now Available in Lead Free Packaging
APPLICATIONS
■ Powering VGA & Sound Card
■ Power PC™ Supplies
■ SMPS Post Regulator
■ High Efficiency “Green” Computer
Systems
■ High Efficiency Linear Power Supplies
■ Constant Current Regulators
■ Adjustable Power Supplies
■ Battery Charger
DESCRIPTION
The SPX29300/01/02/03 are 3A, highly accurate voltage regulators with a low drop out
voltage of 450mV dropout (typical) @ 3A. These regulators are specifically designed for low
voltage applications that require a low dropout voltage and a fast transient response. They
are fully fault protected against over-current, reverse battery, and positive and negative
voltage transients. On-Chip trimming adjusts the reference voltage to 1% initial accuracy.
Other features in the 5 pin versions include Enable, and Error Flag.
The SPX29300/01/02/03 are offered in 3 & 5-pin TO-220 & TO-263 packages. For a 1.5A
version, refer to the SPX29150 data sheet.
TYPICAL APPLICATIONS CIRCUITS
1 SPX29300 3
VIN
6.8µF
+
2
+
1 SPX29302
V
IN
VOUT
6.8µF
10µF
+
2
GND
3
4
5
ADJ
V
OUT
+
R1
10µF
R2
Figure 1. Fixed Output Linear Regulator
Date: 5/25/04
Figure 2. Adjustable Output Linear Regulator
SPX29300/01/02/03 3A Low Dropout Voltage Regulator
1
© Copyright 2004 Sipex Corporation
ABSOLUTE MAXIMUM RATINGS
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 Voltage (Note 1) .................................................... 16V
ELECTRICAL CHARACTERISTICS
(Note 1) at VIN=VOUT + 1V and IOUT = 10mA, CIN = 6.8µF, COUT = 10µF, TA = 25°C, unless otherwise specified. The Boldface
applies over the junction temperature range.
TYP
SPX29300/01
MIN
MAX
IOUT = 10mA
10mA ≤ IOUT ≤ 3A, 2.8V ≤ VIN ≤ 16V
1.800
1.800
1.782
1.764
1.818
1.836
V
IOUT = 10mA
10mA ≤ IOUT ≤ 3A, 3.5V ≤ VIN ≤ 16V
2.500
2.500
2.475
2.450
2.525
2.550
V
IOUT = 10mA
10mA ≤ IOUT ≤ 3A, 4.3V ≤ VIN ≤ 16V
3.300
3.300
3.267
3.234
3.333
3.366
V
IOUT = 10mA
10mA ≤ IOUT ≤ 3A, 6.0V ≤ VIN ≤ 16V
5.000
5.000
4.950
4.900
5.050
5.100
V
Line Regulation
IOUT=10mA,(VOUT+1V) ≤ VIN ≤ 16V
0.06
Load Regulation
VIN=VOUT+1V, 10mA≤ IOUT ≤ IFL (Note 2)
0.2
1
%
∆V/∆T
VOUT Temp Coefficient (Note 6)
20
100
ppm/°C
Dropout Voltage, except
1.8V, (Note 3)
IOUT=100mA
IOUT=1.5A
IOUT=3.0A
50
150
450
175
mV
Ground Current
(Note 5)
IOUT=1.5A
IOUT=3.0A
10
37
35
Ground Pin Current
at Dropout
VIN=0.5V less than specified VOUT,
IOUT=10mA
0.9
Current Limit
VOUT=0V (Note 4)
4.5
Output Noise Voltage
(10Hz to 100kHz)
IL=100mA
CL=10µF
400
CL=33µF
260
Reference Voltage
Adjustable version only
Reference Voltage
Adjustable version only (Note 8)
PARAMETER
CONDITIONS
UNITS
Fixed Voltage Options
1.8V Version
Output Voltage
2.5V Version
Output Voltage
3.3V Version
Output Voltage
5.0V Version
Output Voltage
All Voltage Options
SPX29300/01/02/03
1.240
Adjust Pin Bias Current
Reference Voltage
Temp. Coeff.
40
(Note 7)
Adjust Pin Bias
Current Temp. Coeff.
Date: 5/25/04
%
700
mA
mA
3.0
A
µVRMS
1.228
1.215
1.252
1.265
V
1.203
1.277
V
80
120
nA
20
ppm/°C
0.1
nA/°C
SPX29300/01/02/03 3A Low Dropout Voltage Regulator
2
0.5
© Copyright 2004 Sipex Corporation
ELECTRICAL CHARACTERISTICS
at VIN=VOUT + 1V and IOUT = 10mA, CIN = 6.8µF, COUT = 10µF, TA = 25°C, unless otherwise specified. The Boldface applies
over the junction temperature range. Adjustable versions are set to 5.0V.
PARAMETER
CONDITIONS
FLAG OUTPUT (ERROR COMPARATOR)
TYP
MIN
MAX
SPX29301/03
UNITS
Output Leakage
Current
VOH=16V
0.01
1
2
µA
Output Low Voltage
Device set for 5V,VIN=4.5V, IOL=250µA
220
300
400
mV
Upper Threshold
Voltage
Device set for 5V, (Note 9)
60
Lower Threshold
Voltage
Device set for 5V, (Note 9)
75
Hysteresis
Device set for 5V, (Note 9)
15
40
25
mV
95
140
mV
mV
SPX29301/02
ENABLE Input
Input Logic Voltage
Low (OFF)
High (ON)
VIN
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