SPX2730T-3.3 [SIPEX]
3A High Current Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response; 3A大电流低压差稳压器可调＆固定输出，响应速度快
| 型号： | SPX2730T-3.3 |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | 3A High Current Low Dropout Voltage Regulator Adjustable & Fixed Output, Fast Response |
| 文件： | 总9页 (文件大小：173K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SPX2730/31/32/33
3A High Current Low Dropout Voltage Regulator
Adjustable & Fixed Output,
Fast Response
(ADVANCED INFORMATION)
FEATURES
APPLICATIONS
• Adjustable Output Down To 1.2V
• 1% output accuracy @ 3.3V, 5.0V
• Output Current of 3A
• Powering VGA & Sound Card
• Power PCSupplies
• SMPS Post-Regulator
• Low Dropout Voltage 370mV(Typ.) @ 3A.
• Extremely Tight Load And Line Regulation
• Extremely Fast Transient Response
• Standard 3-Terminal Low Cost TO-220, TO-263
• Reverse-battery and “Load Dump” Protection
• Zero Current Shutdown Mode (5-Pin Versions)
• High Efficiency “Green” Computer Systems
• High Efficiency Linear Power Supplies
• Portable Instrumentation
• Constant Current Regulators
• Adjustable Power Supplies
• Battery charger
• Error Flag Signal Output Out-of Regulation (5-Pin Versions)
PRODUCT DESCRIPTION
The SPX2730/31/32/33 is a 3A high accuracy, low dropout voltage regulator (370mV(Typ)@ 3A). The SPX2730/31/32/33 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 SPX2730/31/32/33 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 package.
The SPX2730/31/32/33 are offered in 3 & 5 pin TO-220 & TO-263 packages compatible with other 3 terminal regulators.
PIN CONNECTIONS
TO-220-5 (U)
TO-220-3 (U)
TO-263-5 (T)
SPX2731/32/33
TO-263-3 (T)
SPX2730
SPX2731
SPX2733
SPX2732
SPX2731
SPX2733
SPX2732
SPX2731/32/33
SPX2730
1) FLAG
1) ENABLE
1) FLAG
1) ENABLE
1) ENABLE
1) ENABLE
2) INPUT
3) GND
2) INPUT
3) GND
2) INPUT
3) GND
2) INPUT
3) GND
2) INPUT
3) GND
1
2
4
3 5
2) INPUT
3) GND
1
2
3
1
2
3
4
5
1
3
2
4) OUTPUT
5) ADJUST
4) OUTPUT
5) FLAG
4) OUTPUT
5) ADJUST
4) OUTPUT
5) FLAG
4) OUTPUT
5) ADJUST
4) OUTPUT
5) ADJUST
Front View
Top View
Top View
Front View
Rev. 12/7/00
SPX2730/31/32/33
ABSOLUTE MAXIMUM RATINGS
Lead Temp. (Soldering, 5 Seconds) ................................ 260°C
Maximum Input Voltage ...................................... 16V
Storage Temperature Range ......................................................-65° to +150°C
Operating Junction Temperature Range
SPX2730/31/32/33 Control Section................................ -45°C +125°C
SPX2730/31/32/33 Power Transistor............................... -45°C +150°C
ELECTRICAL CHARACTERISTICS (NOTE 1) at IOUT = 10mA, Ta=25°C, unless otherwise specified.
SPX2730/31/32/33
PARAMETER
CONDITIONS
Typ
Units
Min
Max
3.3V Version
Output Voltage (Note 2)
IOUT = 10mA
10mA ≤IOUT≤ 3A, 4.75V≤VIN ≤16V
3.3
3.270
3.330
V
3.3
3.240
3.360
5.0V Version
IOUT = 10mA
5.0
4.95
5.05
V
V
Output Voltage (Note 2)
5.0
4.90
5.10
10mA ≤IOUT≤ 3A, 5.5V≤VIN ≤16V
All Voltage Options
Reference Voltage
1.240
1.228
1.215
1.203
1.252
1.265
1.277
0.5
1
(Note 8)`
V
%
%
Reference Voltage
Line Regulation
Load Regulation
0.06
0.2
IO = 10mA, (VOUT + 1V) ≤ VIN≤ 16V
VIN = VOUT + 5V, 10mA ≤ IOUT≤ IFULLLOAD
(Note 2, 6)
Output Voltage (Note 6)
Temperature Coef.
20
100
175
ppm/°C
∆V
∆T
80
mV
Dropout Voltage
IO = 100mA
IO = 1.5A
IO = 3A
250
370
600
35
10
37
0.9
mA
mA
Ground Current
IO = 1.5A, VIN = VOUT, +1V
IO = 3A
VIN = 0.5V less than specified VOUT IOUT = 10mA
IGNDDO Ground Pin Current at
Dropout
Current Limit
VOUT = 0V (Note 4)
4.5
3.0
A
400
V RMS
CL = 10µF
Output Noise Voltage
(10Hz to 100kHz)
IL = 100mA
260
40
CL = 33µF
80
nA
Adjust Pin
120
Bias Current
(Note 7)
20
ppm/°C
Reference Voltage
Temperature
Coefficient
0.1
nA/°C
Adjust Pin Bias
Current Temperature
Coefficient
Flag Output (Error Comparator) SPX2731/SPX2733
VOH = 16V
0.01
220
1.00
µA
Output Leakage
2.00
Current
Device set for 5V. VIN = 4.5V
IOL = 250µA
300
mV
Output Low
Voltage
400
Rev. 12/7/00
SPX2730/31/32/33
(Cont.)
Device set for 5V (Note 9)
Device set for 5V (Note 9)
Device set for 5V (Note 9)
60
75
15
40
mV
Upper Threshold
25
Voltage
95
mV
mV
Lower Threshold
Voltage
140
Hysteresis
ENABLE Input SPX2731/SPX2732
Input Logic Voltage
V
0.8
Low (OFF)
2.4
High (ON)
VEN = 16V
VEN = 0.8V
(Note 10)
100
10
600
750
1
V
Enable Pin
Input Current
µA
µA
2
Regulator Output
500
Current in Shutdown
Notes:
The Bold specifications apply to the full operating temperature range.
Note 1: Maximum positive supply voltage of 60V must be of limited duration (<100msec) and duty cycle.) The maximum continuous supply voltage is 16V.
Note 2: Full load current (IFL) is defined as 1.5A for the
Note 3: Dropout voltage is defined as the input-to output differential when the output voltage drops to 99% of its nominal value with VOUT + 1V applied to VIN.
Note 4: VIN = VOUT (NOMINAL) +1V. For example, use VIN= 4.3V for a3.3V regulator. Employ pulse-testing procedures to minimize temperature rise.
Note 5: 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 6: Output voltage temperature coefficient is defined as the worst case voltage changed divided by the total temperature range.
Note 7: 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. Specifications are for a 200mA load pulse as VIN = 20V (a 4W pulse) for T = 10ms.
Note 8: VREF ≤ VOUT ≤ (VIN – 1), 2.3V ≤ VIN≤ 16V, 10mA < IL ≤ IFL, TJ ≤ TJMAX
Note 9: Comparator threshold is expressed in terms of a voltage differential at the Adjust terminal below the nominal reference voltage measured a 6V input. To
express these thresholds in terms of output voltage change, multiply the error amplifier gain = VOUT/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 = 38mV. 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 10: VEN ≤ 0.8V and VIN ≤ 16V, VOUT = 0.
Rev. 12/7/00
SPX2730/31/32/33
Adjustable Regulator Design
APPLICATION HINTS
SPX2732/33are adjustable regulators and maybe programmed
for any value between 1.25V and 16V using two resistors.
The relation between the resistors is given by:
R1=R2 (VOUT/1.240 –1)
Resistors have a large value up to 1mΩ in order to reduce the
current consumption. This might be interesting in the case of
widely varying load currents.
The SPX2730/31/32/33 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 SPX2730/31/32/33 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.
Error Flag
SPX2731/33 features an error indicating either an over current
fault or a low input voltage. This flag pulls low when such a
problem occurs and may sink 10mA. It is inoperative during
thermal shutdown.
Enable Input
SPX2731/32 features enable input allowing turning ON &
OFF the device. EN has been designed to be compatible with
TTL/CMOS logic. When the regulator is ON, the current
flowing through this pin is approximately 20µA.
Assuming:
VIN = 10V, VOUT = 5V, IOUT = 1.5A, TA = 50°C/W,
θHeatsink Case= 6°C/W, θHeatsink Case = 0.5°C/W, θ JC = 3°C/W
VOUT
VIN
SPX2730
Power dissipation under this condition
PD = (VIN – VOUT) * IOUT = 7.5W
Junction Temperature
TJ = TA + PD * (θCase – HS + θ HS θ JC
)
Fig.1 Basic Fixed Output Regulator
For the Control Section
TJ = 50 + 7.5*(0.5 + 6=3) = 121.25°C
121.25°C < TJ (max) for the Control & Power Sections.
In both case reliable operation is insured by adequate junction
temperature.
VOUT
4
1
2
VIN
SPX2732/33
3
Capacitor Requirements
R1
5
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
R2
V
OUT = VREF
(R /R ) ]
1 2
X [ 1 +
For best results, the total series resistance should be
small enough to pass the minimum regulator load current
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.
Fig. 2 Adjustable Output Voltage Regulator
Minimum Load Current
To ensure a proper behavior of the regulator at light load, a
minimum load of 10mA for SPX2730/31/32/33 is required.
Rev. 12/7/00
SPX2730/31/32/33
PACKAGE DRAWING
TO-263-3L (T)
±
±
(4.470 ±
0.127)
0.051)
0.005
0.176
0.050
0.055 (1.397)
0.405 ±
0.005
±
0.002 (1.270
±
(10.287 0.127)
0.356 ± 0.005
±
(9.042 0.127)
0.600 +- 0.025
±
(15.24
0.635)
±
0.010
0.100
±
(2.540 0.254)
0° 8°
0.103 BSC
(2.616)
0.050 (1.270)
+
0.032 +- 0.001
+ 0.003
0.015
-
(0.813 +- 0.025)
-
(0.381 0.074)
Rev. 12/7/00
SPX2730/31/32/33
PACKAGE DRAWING
TO-263-5L (T)
0.055 (1.397)
±
±
±
0.176
0.050
0.005 (4.470 0.127)
0.405 ± 0.005
0.127)
±
0.002
(1.270 0.051)
(10.287 ±
±
±
0.356
(9.042
0.005
0.127)
±
0.600 0.025
±
0.100
0.010
±
(15.24
±
0.635)
(2.540 0.254)
+
-
0.015
0.003
+
-
(0.381
0.074)
±
±
±
0.067
0.005
0.032 0.003
±
(1.702 0.127)
(0.813
0.076)
0° 8°
Rev. 12/7/00
SPX2730/31/32/33
PACKAGE DRAWING
TO-220-3L (U)
0.180 ± 0.005
(4.572 ± 0.127)
0.151D ± 0.002
(3.835 D ± 0.051)
0.408 ± 0.013
(10.36 ± 0.33)
0.050 ± 0.002
(1.270 ± 0.051)
0.110 ± 0.010
(2.794 ± 0.254)
0.250 ± 0.010
(6.350 ± 0.254)
Tapered 1o
2 Sides
0.340 ± 0.010
(8.636 ± 0.254)
SEATING PLANE
1.020 ± 0.015
(25.910 ± 0.381)
0.150 MIN
(3.81 MIN)
7o Typ.
0.540 ± 0.015
(13.720 ± 0.381)
0.410
(10.41)
0.050 TYP
(1.27 TYP)
0.200 ± 0.010
(5.080 ± 0.254)
0.015 ± 0.010/-0.015
(2.667± 0.254/-0.381)
0.100 ± 0.010
(2.540 ± 0.254)
0.015 ± 0.010/-0.002
(0.381± 0.254/-0.051)
0.032 ± 0.005
(0.813 ± 0.127)
Rev. 12/7/00
SPX2730/31/32/33
PACKAGE DRAWING
TO-220-5L (U)
+
0.150 D 0.005
-
+
-
0.175
(4.45
0.005
0.13)
+
(3.81D
0.13)
-
+
-
+
0.400
(10.16
0.005
0.13)
-
+
+
0.050
(1.27
0.005
0.13)
-
-
+
-
+
-
0.108
(2.74
0.005
2.74)
+
-
+
-
-
0.250
(6.35
0.005
0.13)
+
+
+
-
0.590
(14.99
0.005
0.13)
-
SEATING
PLANE
1.137 REF
(28.88 REF)
7°
Typ.
+
-
0.547
(13.89
0.005
0.005)
+
-
+
+
-
0.067
(1.70
0.005
0.105
(2.67
0.005
0.13)
-
+
0.032
(0.81
0.005
0.13)
-
+
+
-
0.127)
-
+
-
0.268 REF
(6.81 REF)
+
0.268 REF
0.015
(0.38
0.005
0.13)
-
+
-
Rev. 12/7/00
SPX2730/31/32/33
ORDERING INFORMATION
Ordering No. Output Voltages Packages
3.3V
5.0V
3.3V
5.0V
3.3V
5.0V
3.3V
5.0V
Adj
3 Lead TO-220
SPX2730U-3.3
SPX2730U-5.0
SPX2730T-3.3
SPX2730T-5.0
SPX2731U-3.3
SPX2731U-5.0
SPX2731T-3.3
SPX2731T-5.0
SPX2732U
3 Lead TO-220
3 Lead TO-263
3 Lead TO-263
3 Lead TO-220
3 Lead TO-220
3 Lead TO-263
3 Lead TO-263
5 Lead TO-220
3 Lead TO-220
3 Lead TO-220
5 Lead TO-263
3 Lead TO-263
3 Lead TO-263
5 Lead TO-220
3 Lead TO-220
3 Lead TO-220
5 Lead TO-263
3 Lead TO-263
3 Lead TO-263
3.3V
5.0V
Adj
SPX2732U-3.3
SPX2732U-5.0
SPX2732T
3.3V
5.0V
Adj
SPX2732T-3.3
SPX2732T-5.0
SPX2733U
3.3V
5.0V
Adj
SPX2733U-3.3
SPX2733U-5.0
SPX2733T
3.3V
5.0V
SPX2733T-3.3
SPX2733T-5.0
Corporation
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.
Rev. 12/7/00
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