Datasheet SPX2730T-3.3, SPX2730T-5.0, SPX2730U-3.3, SPX2730U-5.0, SPX2733T Datasheet (Sipex Corporation)

T

SPX2730/31/32/33

3A 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 @ 3.3V, 5.0V

• Power PCSupplies

• Output Current of 3A • SMPS Post-Regulator

• Low Dropout Voltage 370mV(Typ.) @ 3A. • High Efficiency “Green” Computer Systems

• Extremely Tight Load And Line Regulation • High Efficiency Linear Power Supplies

• Extremely Fast Transient Response • Portable Instrumentation

• Standard 3-Terminal Low Cost TO-220, TO-263 • Constant Current Regulators

• Reverse-battery and “Load Dump” Protection • Adjustable Power Supplies

• Zero Current Shutdown Mode (5-Pin Versions) • 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-263-3 (T)

SPX2730

1

2

Top View

TO-220-3 (U)

TO-263-5 (T)

SPX2731/32/33

12

45

3

3

Top View

SPX2731

1) ENABLE

2) INPUT

3) GND

4) OUTPUT

5) FLAG

SPX2732

1) ENABLE

2) INPUT

3) GND

4) OUTPUT

5) ADJUST

SPX2733

1) FLAG

2) INPUT

3) GND

4) OUTPUT

5) ADJUST

SPX2730

1

23

Front View

TO-220-5 (U)

SPX2731/32/33

Front View

(ADVANCED INFORMATION)

SPX2731

1) ENABLE

543

2) INPUT

3) GND

4) OUTPUT

5) FLAG

21

SPX2732

1) ENABLE

2) INPUT

3) GND

4) OUTPUT

5) ADJUST

SPX2733

1) FLAG

2) INPUT

3) GND

4) OUTPU

5) ADJUST

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

PARAMETER

3.3V Version

Output Voltage (Note 2)

5.0V Version

Output Voltage (Note 2)

All Voltage Options

Reference Voltage

Reference Voltage
Line Regulation
Load Regulation

V

∆

T

∆

Dropout Voltage

I

= 10mA

OUT

10mA ≤I

I

= 10mA

OUT

10mA ≤I

1.240 1.228

(Note 8)`

IO = 10mA, (V
VIN = V

(Note 2, 6)
Output Voltage (Note 6)
Temperature Coef.

IO = 100mA

IO = 1.5A

= 3A

I

O

Ground Current IO = 1.5A, VIN = V

= 3A

I

O

I

Ground Pin Current at

GNDDO

VIN = 0.5V less than specified V

Dropout

V

Current Limit

Output Noise Voltage
(10Hz to 100kHz)

= 100mA

I

L

Adjust Pin

OUT

CL = 10µF

= 33µF

C

L

40 80

Bias Current
Reference Voltage

(Note 7) 20

Temperature
Coefficient
Adjust Pin Bias

0.1

Current Temperature
Coefficient

Flag Output (Error Comparator) SPX2731/SPX2733

Output Leakage

VOH = 16V 0.01 1.00

Current
Output Low
Voltage

Device set for 5V. VIN = 4.5V

= 250µA

I

OL

CONDITIONS Typ

3A, 4.75V≤V

≤

OUT

3A, 5.5V≤V

≤

OUT

+ 5V, 10mA ≤ I

OUT

= 0V (Note 4) 4.5 3.0

+ 1V) ≤ V

OUT

(NOTE 1) at I

≤

IN

16V

≤

IN

≤

IN

OUT

, +1V

OUT

= 10mA, Ta=25°C, unless otherwise specified.

OUT

3.3

16V

16V

I

≤

FULLLOAD

= 10mA 0.9

OUT IOUT

3.3

5.0

5.0

0.06

0.2 1 %

20

80

250

370

10
37

400

260

220 300

SPX2730/31/32/33

Min Max

3.270

3.240

4.95

4.90

1.215

1.203 1.277

V

3.330

3.360

5.05

5.10

1.252

1.265

0.5 %

100

175

600

35

120

2.00

400

Units

V

V

V

V

ppm/°C

mV

mA

mA

A

RMS

nA

ppm/°C

nA/°C

A

µ

mV

Rev. 12/7/00

SPX2730/31/32/33

(Cont.)

Upper Threshold
Voltage
Lower Threshold

Device set for 5V (Note 9) 60 40

25

Device set for 5V (Note 9) 75 95

Voltage
Hysteresis

Device set for 5V (Note 9) 15 mV

ENABLE Input SPX2731/SPX2732

Input Logic Voltage
Low (OFF)
High (ON)
Enable Pin
Input Current

Regulator Output

VEN = 16V 100 600

VEN = 0.8V 1

(Note 10) 10

2.4

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 (I
Note 3: Dropout voltage is defined as the input-to output differential when the output voltage drops to 99% of its nominal value with V
Note 4: V

IN

= V

OUT (NOMINAL)

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 V
Note 8: V

REF

≤ V

OUT

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 = V
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 V
is varied, with the dropout warning occurring at typically 5% below nominal, 7.7% guaranteed.
Note 10: V

≤ 0.8V and V

EN

) is defined as 1.5A for the

FL

+1V. For example, use VIN= 4.3V for a3.3V regulator. Employ pulse-testing procedures to minimize temperature rise.

= 20V (a 4W pulse) for T = 10ms.

≤ (VIN – 1), 2.3V ≤ V

16V, V

≤

IN

OUT

16V, 10mA < IL ≤ I

≤

IN

= 0.

IN

, TJ ≤ T

FL

JMAX

= (R1 + R2)R2. For example, at a programmable output

OUT/VREF

mV

mV

140

0.8

V

V

750

A

µ

2

A

µ

500

+ 1V applied to VIN.

OUT

as V

OUT

OUT

Rev. 12/7/00

SPX2730/31/32/33

APPLICATION HINTS

The SPX2730/31/32/33 incorporates protection against over­current 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.

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
T

= TA + PD * (θ

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 10mA for SPX2730/31/32/33 is required.

Adjustable Regulator Design

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:

R

(V

1=R2

/1.240 –1)

OUT

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.

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.

V

IN

SPX2730

Fig.1 Basic Fixed Output Regulator

V

IN

1
2

SPX2732/33

3

V

= V

REF

X [ 1 +

For best results, the total series resistance should be

OUT

small enough to pass the minimum regulator load current

Fig. 2 Adjustable Output Voltage Regulator

4

5

(R

) ]

1/R2

V

OUT

V

OUT

R

1

R

2

Rev. 12/7/00

SPX2730/31/32/33

PACKAGE DRAWING
TO-263-3L (T)

±

±

0.405

0.005

±

(10.287 0.127)

0.055 (1.397)

0.176

0.050

±

0.002

(1.270

(4.470

±

0.005

±

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

SPX2730/31/32/33

PACKAGE DRAWING
TO-263-5L (T)

±

0.067

(1.702 0.127)

0.005

±

0.405 0.005

(10.287 ±

±

0.127)

0.055 (1.397)

±

0.356 0.005
±

(9.042

0.032 0.003

(0.813

0.127)

0.600 0.025

(15.24

±
±

0.076)

±
±

0.635)

+

0.015

(0.381 0.074)

-

+

-

0.003

0.176 0.005±(4.470 0.127)
±

0.050 0.002

±

0.100

(2.540 0.254)

0° 8°

±

0.010

±
±

(1.270 0.051)

Rev. 12/7/00

SPX2730/31/32/33

PACKAGE DRAWING
TO-220-3L (U)

0.110 ± 0.010

(2.794 ± 0.254)

0.408 ± 0.013

(10.36 ± 0.33)

0.151D ± 0.002

(3.835 D ± 0.051)

0.250 ± 0.010

(6.350 ± 0.254)

0.340 ± 0.010

(8.636 ± 0.254)

0.150 MIN
(3.81 MIN)

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)

0.100 ± 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

SPX2730/31/32/33

PACKAGE DRAWING
TO-220-5L (U)

+

0.108

0.005

-

(2.74

+

2.74)

-

0.400

(10.16

+

-

+

-

0.005

0.13)

0.150 D

(3.81D

+

0.005

-

+

0.13)

-

0.250
(6.35

+

-

+

-

0.005

0.13)

0.175
(4.45

+

­+

-

0.005

0.13)

0.050
(1.27

+

­+

-

0.005

0.13)

+

0.590

0.005

(13.89

(14.99

0.547

+

-

+

-

-

+

0.13)

-

0.005

0.005)

Typ.

SEATING
PLANE

1.137 REF

(28.88 REF)

7°

+

0.067

0.005

­+

(1.70

0.127)

-

0.268 REF
(6.81 REF)

+

0.032

-

+

(0.81

-

0.268 REF

0.005

0.13)

0.015
(0.38

+

­+

-

0.005

0.13)

0.105
(2.67

+

-

+

-

0.005

0.13)

Rev. 12/7/00

SPX2730/31/32/33

ORDERING INFORMATION

Ordering No. Output Voltages Packages

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
SPX2732U-3.3
SPX2732U-5.0
SPX2732T
SPX2732T-3.3
SPX2732T-5.0
SPX2733U
SPX2733U-3.3
SPX2733U-5.0
SPX2733T
SPX2733T-3.3
SPX2733T-5.0

3.3V 3 Lead TO-220

5.0V 3 Lead TO-220

3.3V 3 Lead TO-263

5.0V 3 Lead TO-263

3.3V 3 Lead TO-220

5.0V 3 Lead TO-220

3.3V 3 Lead TO-263

5.0V 3 Lead TO-263
Adj 5 Lead TO-220

3.3V 3 Lead TO-220

5.0V 3 Lead TO-220
Adj 5 Lead TO-263

3.3V 3 Lead TO-263

5.0V 3 Lead TO-263
Adj 5 Lead TO-220

3.3V 3 Lead TO-220

5.0V 3 Lead TO-220
Adj 5 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: [phone]
FAX: [phone]
e-mail: [e-mail]

233 South Hillview Drive
Milpitas, CA 95035
TEL: [phone]
FAX: [phone]

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