BAYLI B1582T-ADJ, B1582T-5, B1582T-3.3, B1582T-3.0, B1582J-3.0 Datasheet

Bay Linear, Inc

2418 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

4.0A Low Dropout Voltage Regulator

B1582

Adjustable & Fix Output

Pin Connection

Ordering Information

Devices Package Temp.

B1582T TO-220

0 °C to 70 °C

B1582S TO-263

0 °C to 70 °C

B1582J LPDD

0 °C to 70 °C

Description

The Bay Linear B1582 is Monolithic low power 4.0A
Adjustable and fixed NPN voltage regulator that are easy to
use with minimum external components. It is suitable for
applications requiring a well-regulated positive output voltage
with low input-output differential voltage requirements and
output voltage 1.5V, 2.5V, 3.0V, 3.3V, or 5V.

The B1582 Outstanding features include full power usage up
to 4.0Amp of load current internal current limiting and thermal
shutdown. Other fixed versions are also available consult with
factory.

The B1582 is offered in a 5-pin TO-220, & TO-263 packages
compatible with other 5 terminal regulators. The B1582 is
offer in a new LPDD (Low Profile TO-263) package from 4.47
mm (DD) thickness down to only 1.27 mm (LPDD) total
thickness.

Features

• Adjustable Output Down to 1.2V

• Fixed Output Voltages 2.5V, 3.0V 3.3V,

and 5.0V

• Output Current of 4.0A

• Low Dropout Voltage 700mV Typ.

• Current & Thermal Limiting

• Standard 3-Terminal Low Cost TO-220,

D

2

Packages & LPDD

• Similar to industry Standard

CS1503/EZ1582/IRU1150

Applications

• 3.3V to 2.5V for Pentium Processor

• SMPS Post Regulator

• High Efficiency “Green” Computer

Systems

• High Efficiency Linear Power Supplies

• 5V to 3.XXV for Pentium Processor

• 3.3V to 2.7V Intel I740 Chip Set

V

POWER

OUTPUT

1

2

3

4

5

V

CONTROL

ADJ/GND.

SENSE

TO-263-5 Package

V

POWERVPOWER

OUTPUT

1

2

3

4

5

V

CONTROLVCONTROL

ADJ/GND.

SENSE

TO-263-5 Package

Bay Linear

Inspire the Linear Power

Bay Linear, Inc

2418 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

B1582

Absolute Maximum Rating

Parameter Symbol Value Unit

Maximum Input Voltage V

IN

7 V

Power Dissipation P

O

Internally Limited W

Thermal Resistance Junction to Case

θ

JC

3

Thermal Resistance Junction to
Ambient

θ

JA

50

°C/W

Operating Junction
Temperature Range
Control Section
Power Transistor

T

J

0 to 125
0 to 150

Storage Temperature Range T

STG

-65 to 150
Lead Temperature (Soldering 10
Sec.)

T

LEAD

260

°C

Electrical Characteristics

(VIN = 2.05V to 5.25V; IO = 10mA to 4.0Amp, unless otherwise specified)

Parameter Symbol Conditions MIN TYP MAX UNIT

1.485 1.515 V

CONT

=4V, V

PWR

=2V

V

CONT

=3V, V

PWR

=2.3V, I

LOAD

=10mA to 4A

1.475

1.5

1.525

2.475 2.525 V

CONT

=5V, V

PWR

=3.3V

V

CONT

=4V, V

PWR

=3.3V, I

LOAD

=10mA to 4A

2.460

2.5

2.540

2.970 3.030 V

CONT

=5.5V, V

PWR

=3.5V

V

CONT

=4.5V, V

PWR

=3.8V, I

LOAD

=10mA - 4A

2.950

3.0

3.050

3.267 3.333 V

CONT

=5.8V, V

PWR

=3.8V

V

CONT

=4.8V, V

PWR

=4.1V, I

LOAD

=10mA - 4A

3.247

3.3

3.353

4.950 5.050

Output Voltage V

O

V

CONT

=7.5V, V

PWR

=5.5V

V

CONT

=6.5V, V

PWR

=5.8V, I

LOAD

=10mA- 4A

4.920

5.0

5.080

V

1.238 1.262 Reference Voltage V

ref

V

CONT

=2.75V, V

PWR

=2V, I

LOAD

=10mA

V

CONT

=2.7V, to 12V

V

PWR

=3.3V to 5.5V, I

LOAD

=10mA to 4A

1.230

1.250

1.270

V

Line Regulation (1) REG

(line)

IO = 10mA, VIN =5V, T= 25 °C

0.04 0.2

0.08 0.40 Load Regulation (1) REG

(LOAD)

IO = 10mA, VIN =5V, T= 25 °C

%

Dropout Voltage V

PWR-VOUT VCONT=VOUT

+2.5V, I

LOAD

=1.5A

V

CONT=VOUT

+2.5V, I

LOAD

=3.0A

V

CONT=VOUT

+2.5V, I

LOAD

=4.0A

0.26

0.50

0.70

0.38

0.70

0.80

V

Minimum load Current I

min

5 10 mA

Current Limit I

S

(Vin-V

out

)=3V 3 5 A

Ground Pin Current I

Q

VIN =5V 5 10 mA

Temperature Stability T

S

IO = 10mA, VIN =5V 0.5 %

Thermal Regulation

T= 25 °C, 30ms pulse

0.003 %/W

Ripple Rejection R

A

T= 25 °C, VIN =5V

60 75 dB

Thermal Resistance - TO-220 Junction to Tab

Junction to Ambient
DD Package Junction to Tab
Junction to Ambient

3.0
60

3.0
60

3.0
60

3.0
60

°C/W

Note: Output Switch tests are performed under pulsed conditions to minimize power dissipation

Bay Linear, Inc

2418 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

B1582

PIN DESCRIPTION

1. Sense = Allows Kelvin sense of V

OUT

at the load. (Positive side of the reference voltage of

the device).

2. ADJ = Negative side of the reference voltage for the device. Adding a small bypass

capacitor from the ADJ pin to ground will improve the transient response.

3. V

OUT

= Power output of the device.

4. V

CTRL

= Supply pin for the control circuitry of the device. The current flow into this pin will

be about 1% of the output current. V

CTRL

must be between 1.0V and 1.3V greater than the

output voltage for the device to regulate.

5. V

IN

= Output load current is supplied through this pin. V

IN

must be between 0.1V and 0.8V

greater than the output voltage for the device to regulate.

BLOCK DIAGRAM