Datasheet SPX29150T, SPX29150T-2.5, SPX29150T-3.3, SPX29150T-5.0, SPX29150U Datasheet (Sipex Corporation)
...Page 1
SPX29150
1.5A High Current Low Dropout Voltage Regulator
Adjustable & Fixed Output,
Fast Response
FEATURES
APPLICATIONS
• Adjustable Output Down To 1.2V • Powering VGA & Sound Card
• 1% output accuracy @ 2.5V, 3.3V& 5.0V • LCD Monitors
• Output Current of 1.5A • USB Power Supply
• Low Dropout Voltage of 350mV @ 1.5A
• Power PC Supplies
• Extremely Tight Load And Line Regulation • SMPS Post-Regulator
• Extremely Fast Transient Response • High Efficiency “Green” Computer Systems
• Reverse-battery and “Load Dump” Protection • High Efficiency Linear Power Supplies
• Standard 3-Terminal Low Cost TO-220, TO-263 • Portable Instrumentation
• Constant Current Regulators
• Adjustable Power Supplies
• Battery Charger
PRODUCT DESCRIPTION
The SPX29150 is a 1.5A high accuracy, low dropout voltage regulator with only 350mV(Typ.)@ 1.5A). The SPX29150 is designed
for low voltage application that requires lower dropout voltage and faster transient response. This device is an excellent choice for use
in powering low voltage microprocessor that require a lower dropout, faster transient response to regulate from +2.5V to 3.8V supplies
and as a post regulator for switching supplies applications.
The SPX29150 offers full protection against over-current faults, reversed input polarity, reversed load insertion, and positive and
negative transient voltage. On-Chip trimming adjusts the reference voltage to 1%. Features such as Enable pin, Error Flag pin are
also included in the 5 pin packages.
The SPX29150 is offered in a 3 & 5-pin TO-220 & TO-263 package compatible with other 3 terminal regulators. For a 3A low
dropout regulator refer to the data sheet.
PIN CONNECTIONS
TO-263-3 Package
SPX29150
123
V
GND
IN
Front View
V
OUT
TO-220-3 Package
SPX29150
V
V
GND
IN
Front View
OUT
(ADVANCED INFORMATION)
Rev. 12/7/00
Page 2
SPX29150
ABSOLUTE MAXIMUM RATINGS
Lead Temperature (soldering, 5 seconds)……………………260°C Input Voltage)………………………………………..260°C
Storage Temperature Range…………………………-65°C +150°C Input Supply Voltage (Note 1) (Survival)……-20V to +60V
Operating Junction Temperature Range……………..-40°C +125°C
ELECTRICAL CHARACTERISTICS
temperature range.
PARAMETER
2.5V Version
Output Voltage
3.3V Version2.
Output Voltage
5.0V Version
Output Voltage
All Voltage Options
Line Regulation
Load Regulation
V
∆
T
∆
Dropout Voltage (Note 1)
Ground Current (Note 3) IO = 750mA, VIN = V
I
Ground Pin Current
GNDDO
at Dropout
Current Limit
Output Noise Voltage
(10Hz to 100kHz)
= 100mA
I
L
Reference Voltage
Adjust Pin
Bias Current
Reference Voltage
Temperature
Coefficient
Adjust Pin Bias
Current Temperature
Coefficient
I
= 10mA
OUT
10mA ≤I
OUT
I
= 10mA
OUT
10mA ≤I
OUT
I
= 10mA
OUT
10mA ≤I
OUT
IO = 10mA, (V
VIN = V
Output Voltage
Temperature Coef.
+ 5V, 10mA ≤ I
OUT
IO = 100mA
IO = 750mA
= 1.5A
I
O
IO = 1.5A
VIN = 0.1V less than specified V
V
CL = 10µF
C
1.240 1.228
40 80
(Note 4) 50
0.1
= 0V (Note 2) 2.2 1.7
OUT
= 33µF
L
at I
= 10mA, TA = 25°C, unless otherwise specified. The Boldface applies over the junction
OUT
CONDITIONS Typ
2.5
1.5A, 4.3V≤V
≤
1.5A, 4.3V≤V
≤
1.5A, 5.5V≤V
≤
+ 1V) ≤ V
OUT
OUT
16V
≤
IN
16V
≤
IN
16V
≤
IN
16V
≤
IN
≤
OUT
, +1V
OUT IOUT
I
FULLLOAD
= 10mA 0.9
2.5
3.3
3.3
5.0
5.0
0.1
0.2 1 %
50
90
280
490
12
25
400
260
Min Max
2.475
2.450
3.267
3.234
4.95
4.90
1.215
SPX29150
Units
2.525
2.550
3.330
3.366
5.05
5.10
0.5 %
100
200
690
25
1.252
1.265
120
V
V
V
ppm/°C
mV
mA
mA
A
V
µ
RMS
V
nA
ppm/°C
nA/°C
Rev. 12/7/00
Page 3
SPX29150
Upper Threshold
Voltage
Lower Threshold
Device set for 3.3V (Note 5) 60 40
25
Device set for 3.3V (Note 5) 75 95
Voltage
Hysteresis
Device set for 3.3V (Note 5) 15 mV
NOTES:
Note 1: Dropout voltage is defined as the input-to output differential when the output voltage drops to 95% of its nominal value.
Note 2: V
Note 3: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current to the ground current.
Note 4: Thermal regulation is defined as the change in the output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation
effects.
Note 5: Comparator threshold is expressed in terms of a voltage differential at the Adjust terminal below the nominal reference voltage measured 6V input. To express
these thresholds in terms of output voltage change, multiply the error amplifier gain = V
5V, the Error output is guaranteed to go low when the output drops by 95mVx 5V/ 1.240V = 38mV. Threshold remains constant as a percent of V
with the dropout warning occurring at typically 5% below nominal, 7.7% guaranteed.
Note 6: V
= V
IN
OUT (NOMINAL)
≤ 0.8V and V
EN
+1V. For example, use VIN= 4.3V for a 3.3V regulator. Employ pulse-testing procedures to minimize temperature rise.
= (R1 + R2)/R2. For example, at a programmable output voltage of
OUT/VREF
≤
IN
16V, V
OUT
= 0.
BLOCK DIAGRAM
IN OUT
FLAG
1.180V 1.240V
Reference
--
++
EN
Thermal
Shutdown
mV
OUT
R2*
as V
mV
OUT
ADJ
140
O.V
I
LIMIT
28V R1*
is varied,
GND
Rev. 12/7/00
Page 4
SPX29150
APPLICATION HINTS
The SPX29150 incorporates protection against over-current
faults, reversed load insertion, over temperature operation, and
positive and negative transient voltage. However, the use of
an output capacitor is required in order to insure the stability
and the performances.
Thermal Consideration
Although the SPX29150 offers limiting circuitry for overload
conditions, it is necessary not to exceed the maximum junction
temperature, and therefore to be careful about thermal
resistance. The heat flow will follow the lowest resistance
path, which is the Junction-to-case thermal resistance. In
order to insure the best thermal flow of the component, a
proper mounting is required. Note that the case of the device
is electrically connected to the output. The
case has to be electrically isolated, a thermally conductive
spacer can be used. However do not forget to consider its
contribution to thermal resistance.
Assuming:
= 10V, V
V
IN
θ
Heatsink Case
= 5V, I
OUT
= 6°C/W, θ
= 1.5A, TA = 50°C/W,
OUT
Heatsink Case
= 0.5°C/W, θ
= 3°C/W
JC
Power dissipation under this condition
P
= (VIN – V
D
OUT
) * I
= 7.5W
OUT
Junction Temperature
= TA + PD * (θ
T
J
Case – HS
+ θ
HS θ JC
)
For the Control Section
= 50 + 7.5*(0.5 + 6=3) = 121.25°C
T
J
121.25°C < T
for the Control & Power Sections.
J (max)
In both case reliable operation is insured by adequate junction
temperature.
Capacitor Requirements
The output capacitor is needed for stability and to minimize
the output noise. The required value of the capacitor varies
with the load. However, a minimum value of 10µF Aluminum
will guarantee stability over load. A tantalum capacitor is
recommended for a fast load transient response.
If the power source has high AC impedance, a 0.1µF capacitor
between input & ground is recommended. This capacitor
should have good characteristics up to 250 kHz.
Minimum Load Current
To ensure a proper behavior of the regulator at light load, a
minimum load of 5mA for SPX29150 is required.
V
IN
Fig.1 Basic Fixed Output Regulator
SPX29150
V
OUT
Rev. 12/7/00
Page 5
SPX29150
Line Regulation
3.320
3.315
3.310
3.305
3.300
Vout (V)
3.295
3.290
3.285
3.280
4 6 8 10 12 14 16
Vin (V)
Ground Current vs. Load Current
80.0
70.0
60.0
50.0
40.0
I Gnd (mA)
30.0
20.0
10.0
0.0
0 0.2 5 0.5 0.7 5 1 1.25 1.5
IL (A)
3.3V Device
IL = 10m A
CL = 10uF
3.3V Device
Vin = 4.3V
CL = 10uF
3.310
3.305
3.300
3.295
Vout (V)
3.290
3.285
3.280
0 0 .25 0.5 0.75 1 1.25 1.5
IL (A)
3.3V Device
Vin = 4.3V
CL = 10uF
Ground Current vs. Input Voltage
260
240
220
200
I Gnd (uA)
Load Regulation
180
160
140
4 6 8 10121416
Vin (V)
3.3V Device
IL = 10m A
CL = 10uF
Ground Current v s. Load Current
(In Dropout)
100
90
80
70
60
50
40
I Gnd (mA)
30
20
10
0
0 0.25 0.5 0.75 1 1.25 1.5
IL (A)
3.3V Device
Vin = 3.2V
CL = 10uF
600
Dropout Voltage vs. Load Current
500
400
300
200
V Dropout (mV)
100
0
0 0.25 0.5 0.75 1 1.25 1.5
IL (A)
3.3V Device
Vin = 3.2V
CL = 10uF
Rev. 12/7/00
Page 6
SPX29150
Ground Current vs. T emperature
280
270
260
250
240
230
220
I Gnd (uA)
210
200
190
180
-40 -20 0 20 40 60 80 100 120
(IL = 10mA)
Temperature (
3.3V Device
Vin = 4.3V
IL = 10mA
CL = 10uF
o
C)
3.320
3.310
3.300
3.290
3.280
3.270
Vout (V)
3.260
3.250
3.240
3.230
3.220
-40 -20 0 20 40 60 80 100 120
Output Voltage vs. Temperature
3.3V Device
Vin = 4.3V
IL = 10mA
CL = 10uF
Temperature (
o
C)
Ground Current vs. Temperature
7.00
6.80
6.60
6.40
6.20
6.00
5.80
I Gnd (mA)
5.60
5.40
5.20
5.00
-40 -20 0 20 40 60 80 100 120
(IL = 500mA)
Temperature (
3.3V Device
Vin = 4.3V
IL = 500mA
CL = 10uF
o
C)
35
34
33
32
31
30
29
I Gnd (mA)
28
27
26
25
-40 -20 0 20 40 60 80 100 120
Ground Current vs. T emperature
(In Dropout, IL = 750mA)
o
Temperature (
C)
3.3V Device
Vin = 3.2V
IL = 750mA
CL = 10uF
Ground Current vs. T emperature
52.0
50.0
48.0
46.0
44.0
I Gnd (mA)
42.0
40.0
38.0
36.0
-40 -20 0 20 40 60 80 100 120
(IL = 1.5A)
Temperature (
o
C)
3.3V Device
Vin = 4.3V
IL = 1.5A
CL = 10uF
100
95
90
85
I Gnd (mA)
80
75
70
-40 -20 0 20 40 60 80 100 120
Ground Current vs. T emperature
(In Dropout, IL = 1.5A)
3.3V Device
Vin = 3.2V
IL = 1.5A
CL = 10uF
Temperature (
o
C)
Rev. 12/7/00
Page 7
SPX29150
Dropout Voltage vs. Temperature
400
380
360
340
320
300
280
V Dropout (mV)
260
240
220
200
-40 -20 0 20 40 60 80 100 120
(IL = 750mA)
Temperature (
3.3V Device
Vin = 3.2V
IL = 750mA
CL = 10uF
o
C)
Rev. 12/7/00
Page 8
SPX29150
PACKAGE DRAWING
TO-263-3L (T)
±
±
±
0.405
0.005
±
(10.287 0.127)
0.055 (1.397)
0.176
0.050
0.005
±
0.002
(4.470
(1.270
±
0.356 0.005
±
(9.042 0.127)
0.600
(15.24
+
0.025
-
±
0.635)
±
0.010
0.103 BSC
(2.616)
0.050 (1.270)
+
0.032
0.001
-
+
(0.813 0.025)
-
0.015
(0.381 0.074)
+
-
+
-
0° 8°
0.003
0.100
±
(2.540 0.254)
0.127)
±
0.051)
Rev. 12/7/00
Page 9
SPX29150
PACKAGE DRAWING
TO-220-3L (U)
0.408 ± 0.013
(10.36 ± 0.33)
0.151D ± 0.002
(3.835 D ± 0.051)
0.110 ± 0.010
(2.794 ± 0.254)
0.250 ± 0.010
(6.350 ± 0.254)
0.340 ± 0.010
(8.636 ± 0.254)
0.540 ± 0.015
(13.720 ± 0.381)
0.150 MIN
(3.81 MIN)
0.410
(10.41)
0.050 TYP
(1.27 TYP)
0.200 ± 0.010
(5.080 ± 0.254)
0.100 ± 0.010
(2.540 ± 0.254)
0.032 ± 0.005
(0.813 ± 0.127)
0.180 ± 0.005
(4.572 ± 0.127)
7o Typ.
0.015 ± 0.010/-0.002
(0.381± 0.254/-0.051)
0.050 ± 0.002
(1.270 ± 0.051)
SEATING PLANE
1.020 ± 0.015
(25.910 ± 0.381)
0.015 ± 0.010/-0.015
(2.667± 0.254/-0.381)
Tapered 1
2 Sides
o
Rev. 12/7/00
Page 10
SPX29150
ORDERING INFORMATION
Ordering No. Output Voltages Packages
SPX29150U
SPX29150U-2.5
SPX29150U-3.3
SPX29150U-5.0
SPX29150T
SPX29150T-2.5
SPX29150T-3.3
SPX29150T-5.0
Adj 5 Lead TO-220
2.5V 3 Lead TO-220
3.3V 3 Lead TO-220
5.0V 3 Lead TO-220
Adj 5 Lead TO-263
2.5V 3 Lead TO-263
3.3V 3 Lead TO-263
5.0V 3 Lead TO-263
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation
Headquarters and Main Offices:
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 935-7600
FAX: (408) 934-7500
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 hereing;
neither does it convey any license under its patent rights nor the rights of others.
Corporation
Rev. 12/7/00
Loading...