BAYLI B1580T-2.5, B1580T-1.5, B1580S-ADJ, B1580S-5, B1580S-3.3 Datasheet

Bay Linear, Inc

2478 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

8.0A Low Dropout Voltage Regulator

B1580

Adjustable & Fix Output

Pin Connection

Ordering Information

Devices Package Temp.

B1580T TO-220

0 °C to 70 °C

B1580S TO-263

0 °C to 70 °C

Description

The Bay Linear B1580 is Monolithic low power 8.0A
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 B1580 Outstanding features include full power usage up
to 8.0Amp of load current internal current limiting and thermal
shutdown. Other fixed versions are also available consult with
factory.

The B1580 is offered in a 5-pin TO-220, & TO-263 packages
compatible with other 5 terminal regulators. For 5A Low
dropout Regulator refer to the B1581 data sheet.

Features

• Adjustable Output Down to 1.2V

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

and 5.0V

• Output Current of 8.0A

• Low Dropout Voltage 700mV Typ.

• Current & Thermal Limiting

• Standard 3-Terminal Low Cost TO-220,

D

2

Packages

•

Similar to industry Standard
EZ1580/CS5208

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 fro Pentium Processor

• Battery Charger

Bay Linear

Bay LinearBay Linear

Bay Linear

Linear Excellenc e

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, Inc

2478 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

B1580

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 = 4.75V to 5.25V; IO = 10mA to 8.0Amp, unless otherwise specified)

Parameter Symbol Conditions MIN TYP MAX UNIT

-1 1 Output Voltage V

O

V

CONT

= V

OUT

+1.5V, V

PWR=VOUT

+0.5V

V

CONT

= V

OUT

+1.5V, V

PWR=VOUT

+0.8V

I

LOAD

=10mA to 8A

-2

2

%

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 8A

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

V

CONT=VOUT

+2.5V, I

LOAD

=8A

0.55 0.70

V

Minimum load Cu rrent I

min

5 10 mA

Current Limit I

S

(Vin-V

out

)=3V 8 10 A

Ground Pin Current I

Q

VIN =5V 200 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 80 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