SPX29500T-1.8/TR [EXAR]
Regulator, 1 Output, BIPolar,;
| 型号： | SPX29500T-1.8/TR |
| 厂家： | 
EXAR CORPORATION |
| 描述： | Regulator, 1 Output, BIPolar, |
| 文件： | 总11页 (文件大小：557K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
SPX29500/01/02/03
5A Low Dropout Voltage Regulator
Adjustable & Fixed Output, Fast Response Time
FEATURES
■ Adjustable Output Down to 1.25V
■ 1% Output Accuracy
■ Output Current of 5A
■ Low Dropout Voltage: 370mV @ 5A
■ Tight Line Regulation: 0.06%
■ Load Regulation: 0.2%
SPX29502
5 Pin TO-263
SP29500
■ Fast Transient Response
■ Reverse-Battery Protection
■ Current Limit and Thermal Protection
3 Pin TO-220
1
2
3
1
2
3
APPLICATIONS
■ Powering VGA & Sound Card
■ Power PC™ Supplies
■ SMPS Post Regulator
■ High Efficiency “Green” Computer
Systems
VIN
VOUT
GND
■ High Efficiency Linear Power Supplies
■ Constant Current Regulators
■ Adjustable Power Supplies
■ Battery Charger
Now Available in Lead Free Packaging
DESCRIPTION
TheSPX29500/01/02/03are5Ahighlyaccuratevoltageregulatorswithalowdropoutvoltageof370mV
@ 5A. 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 SPX29500/01/02/03 are offered in 3 & 5-pin TO-220 & TO-263 packages. For a 1.5A version, refer
to the SPX29150 data sheet. For a 3A version, refer to the SPX29300 datasheet.
TYPICAL APPLICATION CIRCUITS
SPX29502
1
2
4
V
V
1
SPX29500
3
VOUT
OUT
V
IN
6.8µF
IN
+
+
5
3
22µF
2
+
+
R1
22µF
ADJ
6.8µF
GND
R2
Figure 1. Fixed Output Linear Regulator
Figure 2. Adjustable Output Linear Regulator
Rev:A Date: 3/8/04
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
1
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) .................................................... 20V
OPERATING RATINGS
Input Voltage ................................................................... 16V
ELECTRICAL CHARACTERISTICS
Specifications are at VIN = VOUT + 1V and IOUT = 10mA, CIN = 6.8µF, COUT = 22µF, TA = 25°C, unless otherwise specified.
The ♦ denotes the specifications which apply over the full operating temperature range, unless otherwise specified.
PARAMETER
MIN
TYP
MAX
UNITS
CONDITIONS
Fixed Voltage Options
1.8V Version
SPX29500/01
Output Voltage
1.782
1.764
1.800
1.800
1.818
1.836
V
V
V
V
IOUT = 10mA
10mA ≤ IOUT ≤ 5A, 2.8V ≤ VIN ≤ 16V
♦
♦
♦
♦
2.5V Version
Output Voltage
2.475
2.450
2.500
2.500
2.525
2.550
IOUT = 10mA
10mA ≤ IOUT ≤ 5A, 3.5V ≤ VIN ≤ 16V
3.3V Version
Output Voltage
3.267
3.234
3.300
3.300
3.333
3.366
IOUT = 10mA
10mA ≤ IOUT ≤ 5A, 4.3V ≤ VIN ≤ 16V
5.0V Version
Output Voltage
4.950
4.900
5.000
5.000
5.050
5.100
IOUT = 10mA
10mA ≤ IOUT ≤ 5A, 6.0V ≤ VIN ≤ 16V
All Voltage Options
Line Regulation
Load Regulation
∆V/∆T
SPX29500/01/02/03
0.06
0.2
20
0.5
%
%
IOUT=10mA,(VOUT+1V) ≤ VIN ≤ 16V
VIN=VOUT+2V, 10mA≤ IOUT ≤ IFL (Note 2)
VOUT Temp Coefficient (Note 5)
1
100
250
ppm/°C
mV
♦
♦
Dropout Voltage, except
1.8V
80
IOUT=250mA
IOUT=2.5A
IOUT=5A
200
370
600
50
♦
♦
Ground Current
(Note 4)
20
70
mA
mA
IOUT=2.5A
IOUT=5A
Ground Pin Current
at Dropout
3
VIN=0.5V less than specified VOUT,
IOUT=10mA
Current Limit
7.5
10
A
♦
(Note 3)
Output Noise Voltage
(10Hz to 100kHz)
IL=100mA
425
µVRMS
CL=22µF
350
CL=33µF
Reference Voltage
1.228
1.215
1.240
1.252
1.265
V
Adjustable version only
♦
♦
Reference Voltage
1.203
1.277
V
Adjustable version only (Note 7)
(Note 6)
Adjust Pin Bias Current
40
20
80
120
nA
Reference Voltage
Temp. Coeff.
ppm/°C
nA/°C
Adjust Pin Bias
0.1
Current Temp. Coeff.
Rev:A Date: 3/8/04
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
2
ELECTRICAL CHARACTERISTICS: Continued
Specifications are at VIN = VOUT + 1V and IOUT = 10mA, CIN = 6.8µF, COUT = 22µF, TA = 25°C, unless otherwise specified.
The ♦ denotes the specifications which apply over the full operating temperature range, unless otherwise specified.
PARAMETER
MIN
TYP
SPX29501/03
0.01
MAX
UNITS
CONDITIONS
Flag Output (Error Comparator)
Output Leakage
Current
1
2
µA
mV
mV
mV
mV
VOH=16V
♦
♦
♦
♦
Output Low Voltage
220
60
300
400
Device set for 5V,VIN=4.5V, IOL=250µA
Device set for 5V, (Note 8)
Device set for 5V, (Note 8)
Device set for 5V, (Note 8)
Upper Threshold
Voltage
40
25
Lower Threshold
Voltage
75
95
140
Hysteresis
15
Enable Input
SPX29501/02
Input Logic Voltage
Low (OFF)
0.8
V
(Note 10)
High (ON)
2.4
ENABLE Input Current
100
0.6
600
750
2
µA
µA
VEN=16V
VEN=0.8V
♦
♦
4
Regulator Output
10
µA
(Note 9)
Current in Shutdown
500
♦
Thermal Resistance
2
60
2
°C/W
TO-220 Junction to Case, at Tab
TO-220 Junction to Ambient
TO-263 Junction to Case, at Tab
TO-263 Junction to Ambient
60
NOTES:
Note 1: Maximum positive supply voltage of 20V must be of limited duration (<100ms) and duty cycle of less than 1%. The
maximum continuous supply voltage is 16V.
Note 2: Full load current (IFL) is defined as 5A.
Note 3: VIN = VOUT (NOMINAL) +1V. For example, use VIN = 4.3V for a 3.3V regulator. Employ pulse-testing procedures to minimize
temperature rise.
Note 4 Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current
plus the ground pin current.
Note 5: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Note 6: Thermal regulation is defined as the change in output voltage at time T after a change in power dissipation is applied,
excluding load / line regulation effects. Specifications for a 200mA load pulse as VIN = 20V (a 4W pulse) for t = 10ms.
Note 7: VREF≤ VOUT ≤ (VIN-1), 2.3V≤VIN ≤ 16V, 10mA ≤ IL ≤ IFL, Tj < Tjmax
.
Note 8: 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
OUT/VREF = (R1 + R2)/R2. For example, at a programmable output voltage of 5V, the Error output is guaranteed to go low when
the output drops by 95mVx 5V/ 1.240V = 383mV. Threshold remain constant as a percent of VOUT as VOUT is varied, with the
dropout warning occurring at typically 5% below nominal, 7.7% guaranteed.
Note 9: VEN ≤ 0.4V and VIN ≤ 16V, VOUT = 0.
Note 10: Measured with IOUT = IOUT MIN (10mA).
Rev:A Date: 3/8/04
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
3
FUNCTIONAL DIAGRAM
IN
OUT
O.V
ILIMIT
1.180V
FLAG
1.240V
20V
R1*
Reference
+
-
+
-
ADJ
EN
Thermal
Shutdown
R2*
GND
TYPICAL PERFORMANCE CHARACTERISTICS
600
550
500
450
400
350
300
250
200
150
100
50
120
110
100
90
80
70
60
50
40
30
20
10
0
0
1
2
3
4
5
0
1
2
3
4
5
6
Output Current (A)
Output Current (A)
Figure 3. Ground Current (mA) vs. Output Current (A)
Figure 4. Dropout (mV) vs. Output Current (A)
VOUT (AC)
VOUT (AC)
IOUT (2A/DIV)
VIN
Figure 5. Load Transient (VIN=4V, VO=3.3V, COUT=22µF,
Figure 6. Line Transient (COUT=22µF, IO=10mA)
10mA~5A)
Rev:A Date: 3/8/04
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
4
APPLICATION INFORMATION
load transient response is needed. If the power
source has a high AC impedance, a 0.1µF ce-
ramic capacitor between input & ground is rec-
ommended.
The SPX29500/01/02/03 incorporates protec-
tion against over-current faults, reversed load
insertion, over temperature operation, and posi-
tive and negative transient voltage.
Thermal Considerations
Minimum Load Current
Although the SPX29500/01/02/03 offers limit-
ing circuitry for overload conditions, it is still
necessary to insure that the maximum junction
temperature is not exceeded in the application.
Heat will flow through the lowest resistance
path,thejunction-to-casepath. Inordertoinsure
the best thermal flow of the component, proper
mounting is required.
To ensure a proper behavior of the regulator
under light load, a minimum load of 10mA for
SPX29500/01/02/03 is required.
Adjustable Regulator Design
The SPX29502/03 are adjustable regulators that
can be programmed to any value between 1.24V
and 16V using 2 resistors, R1 and R2. The
relationship between the resistors is:
TO-220 Design Example:
Assume that VIN = 8V, VOUT = 5V, IOUT = 5A, TA
= 50°C, θHA= 1°C/W, θCH= 2°C/W, and θJC=
2°C/W, where:
R1 = R2(VOUT/1.24-1).
Error Flag
The SPX29501/03 features an error flag that
indicates either an over current or under voltage
condition. The flag output goes low, sinking
10mA when either condition occurs.
TA = ambient temperature,
θHA= heatsink to ambient thermal
resistance
θCH= case to heatsink thermal
resistance
Enable Input
θJC = junction to case thermal
resistance
The SPX29501/02 have an Enable function that
switches the regulator on and off. Their thresh-
oldsareTTLcompatible. Enablingtheregulator
requires approximately 20µA of current.
The power calculated under these conditions is:
PD = (VIN – VOUT) * IOUT = 15W.
Typical Application Circuits
And the junction temperature is calculated as
TJ = TA + PD * (θHA + θCH + θJC) or
TJ = 50 + 15 * (1+2+2) = 125°C
Figure 1 represents at typical fixed output regu-
lator. Figure 2 represents an adjustable output
regulator. ThevaluesofR1andR2settheoutput
voltage value as follows:
Reliable operation is insured.
VOUT =VREF * [1 + (R1/R2)].
Capacitor Requirements
The output capacitor is needed to insure stability
and minimize the output noise. The value of the
capacitor varies with the load. However, a
minimum value of 22µF aluminum capacitor
will guarantee stability over all load conditions.
A tantalum capacitor is recommended if a faster
For best results, the total series resistance should
guarantee a minimum regulator load current of
10mA.
Rev:A Date: 3/8/04
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
5
PACKAGES
TO-263-3 Package (T)
TO-263-5 Package (T5)
SPX29500
1)VIN
SPX29501
1)ENABLE
2)INPUT
SPX29502
1) ENABLE
2) INPUT
SPX29503
1)FLAG
1
2
3 4 5
1
2
3
2)GND
2)INPUT
3)
VOUT
3)GND
3)
4) OUTPUT
5)
GND
3)
GND
4)OUTPUT
5)
4)OUTPUT
5)
ADJUST
ADJUST
FLAG
V
V
GND
Top View
IN
OUT
Front View
TO-220-3 Package (U)
TO-220-5 Package (U5)
SPX29503
SPX29501
1)ENABLE
2)INPUT
SPX29502
SPX29500
1)VIN
2)GND
3)VOUT
1
2
3
1)
2)
3)
4)
5)
1)
2)
3)
4)
5)
ENABLE
INPUT
GND
OUTPUT
FLAG
INPUT
GND
OUTPUT
ADJUST
3)
4)
5)
GND
OUTPUT
FLAG
ADJUST
GND
IN
Front View
1 2 3 4 5
Top View
V
V
OUT
*Tab is internally connected to GND
Rev:A Date: 3/8/04
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
6
PACKAGES: 3 PIN TO-263
E
A
K
B
S
H
M
L
W
P
-A-
N
G
D
R
TERMINAL 8
C
U
V
DIMENSIONS
in inches
SYMBOL
MIN
.396
MAX
0.406
0.336
0.180
0.036
0.055
0.100 REF
0.620
0.066
.010
A
B
C
D
E
G
H
K
L
0.326
0.170
0.026
0.045
0.100 REF
0.580
0.055
.000
M
N
P
R
S
U
V
W
0.098
.017
0.108
.023
.090
.110
0°
8°
.095
.105
.30 REF
.305 REF
.010
.30 REF
.305 REF
.010
3 Pin TO-263
Rev:A Date: 3/8/04
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
7
PACKAGES: 5 PIN TO-263
20° 2°
A
E
C2
L1
D
A1
H
L
b
e
C
R
DIMENSIONS
in inches
SYMBOL
MIN
.380
MAX
0.420
0.380
0.190
0.039
0.065
E
D
0.330
0.160
0.020
0.045
0.067 REF
0.575
0.055
.015
A
b
C2
e
0.067 REF
0.625
0.066
.029
H
L1
C
L
0.090
.000
0.110
.010
A1
R
0°
8°
5 Pin TO-263
Rev:A Date: 3/8/04
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
8
PACKAGES: 3 PIN TO-220
φ P
E
α (5X)
Q
D
H1
V
E-PIN
R
b1
L
e3
C1
J1
DIMENSIONS
e
in inches
e1
SYMBOL
MIN
0.160
MAX
0.190
A
b
0.025
0.040
C1
D
0.015
0.022
0.560
0.590
E
0.385
0.415
e
0.090
0.110
C
L
e1
e3
F
0.190
0.210
0.045
0.055
0.045
0.055
H1
J1
φ P
Q
0.234
0.258
F
0.090
0.115
A
0.146
0.156
0.103
0.113
L
0.540
0.560
α
3° typ
7° typ
b1
0.450
0.060
R
U
V
0.243 REF
0.300 REF
0.240 REF
6.170 REF
7.620 REF
6.100 REF
3 Pin TO-220
Rev:A Date: 3/8/04
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
9
PACKAGES: 5 PIN TO-220
φ P
A
Q
E
A1
H1
D
SEATING
PLANE
α
L
e
b
C
e1
A2
DIMENSIONS
in inches
SYMBOL
MIN
0.165
MAX
0.19
A
A1
A2
C
0.045
0.055
0.09
0.115
0.012
0.025
D
0.560
0.596
e
0.067 BSC
0.268 REF
0.385
0.067 BSC
0.268 REF
0.415
e1
E
H1
b
0.224
0.258
0.025
0.04
φ P
Q
0.146
0.156
0.103
0.113
L
0.54
0.56
α
7° typ
7° typ
5 Pin TO-220
Rev:A Date: 3/8/04
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
10
ORDERING INFORMATION
PART NUMBER
ACCURACY
OUTPUT VOLTAGE
PACKAGE
SPX29500U-1.8 ................... 1.0% ................................... 1.8V .............................. 3 lead TO-220
SPX29500U-2.5 ................... 1.0% ................................... 2.5V .............................. 3 lead TO-220
SPX29500U-3.3 ................... 1.0% ................................... 3.3V .............................. 3 lead TO-220
SPX29500U-5.0 ................... 1.0% ................................... 5.0V .............................. 3 lead TO-220
SPX29500T-1.8 ................... 1.0% ................................... 1.8V .............................. 3 lead TO-263
SPX29500T-2.5 ................... 1.0% ................................... 2.5V .............................. 3 lead TO-263
SPX29500T-3.3 ................... 1.0% ................................... 3.3V .............................. 3 lead TO-263
SPX29500T-5.0 ................... 1.0% ................................... 5.0V .............................. 3 lead TO-263
SPX29501U5-1.8 ................. 1.0% ................................... 1.8V .............................. 5 lead TO-220
SPX29501U5-2.5 ................. 1.0% ................................... 2.5V .............................. 5 lead TO-220
SPX29501U5-3.3 ................. 1.0% ................................... 3.3V .............................. 5 lead TO-220
SPX29501U5-5.0 ................. 1.0% ................................... 5.0V .............................. 5 lead TO-220
SPX29501T5-1.8 ................. 1.0% ................................... 1.8V .............................. 5 lead TO-263
SPX29501T5-2.5 ................. 1.0% ................................... 2.5V .............................. 5 lead TO-263
SPX29501T5-3.3 ................. 1.0% ................................... 3.3V .............................. 5 lead TO-263
SPX29501T5-5.0 ................. 1.0% ................................... 5.0V .............................. 5 lead TO-263
SPX29502T5........................ 1.0% .................................... Adj................................ 5 lead TO-263
SPX29502U5 ....................... 1.0% .................................... Adj................................ 5 lead TO-220
SPX29503T5........................ 1.0% .................................... Adj................................ 5 lead TO-263
SPX29503U5 ....................... 1.0% .................................... Adj................................ 5 lead TO-220
Please consult the factory for pricing and availability on a Tape-On-Reel option.
Available in lead free packaging. To order, add "-L" suffix to the part number.
Example: SPX29500U-1.8 = standard; SPX29500U-L -1.8 = lead free.
Corporation
ANALOGEXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Sales Office
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: sales@sipex.com
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.
Rev:A Date: 3/8/04
SPX29500/01/02/03 5A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
11
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