ETC B1580

Bay Linear
Linear Excellence
B1580
8.0A Low Dropout Voltage Regulator
Adjustable & Fix Output
Description
Features
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.
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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,
D2 Packages
Similar to industry Standard
EZ1580/CS5208
Applications
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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
Ordering Information
Pin Connection
Devices
B1580T
B1580S
5
4
3
2
1
Package
Temp.
TO-220
TO-263
0 °C to 70 °C
0 °C to 70 °C
VPOWER
VCONTROL
OUTPUT
ADJ/GND.
SENSE
TO-263-5 Package
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556
www.baylinear.com
B1580
Absolute Maximum Rating
Parameter
Maximum Input Voltage
Power Dissipation
Thermal Resistance Junction to Case
Thermal Resistance Junction to
Ambient
Operating Junction
Temperature Range
Control Section
Power Transistor
Storage Temperature Range
Lead Temperature (Soldering 10
Sec.)
Symbol
Value
Unit
VIN
PO
θJC
θJA
7
Internally Limited
3
50
V
W
°C/W
°C
TJ
TSTG
TLEAD
0 to 125
0 to 150
-65 to 150
260
Electrical Characteristics
(VIN = 4.75V to 5.25V; IO = 10mA to 8.0Amp, unless otherwise specified)
Parameter
Symbol
Conditions
Output Voltage
VO
Reference Voltage
Vref
Line Regulation (1)
REG (line)
Load Regulation (1)
REG (LOAD)
Dropout Voltage
VPWR-VOUT
Minimum load Current
Current Limit
Ground Pin Current
Temperature Stability
Thermal Regulation
Ripple Rejection
Thermal Resistance
Imin
IS
IQ
TS
RA
-
MAX
UNIT
1
2
%
1.250
1.262
1.270
V
0.04
0.2
%
IO = 10mA, VIN =5V, T= 25 °C
0.08
0.40
VCONT=VOUT+2.5V, ILOAD=8A
0.55
5
10
0.70
10
VCONT= VOUT+1.5V, VPWR=VOUT+0.5V
VCONT= VOUT+1.5V, VPWR=VOUT+0.8V
ILOAD=10mA to 8A
VCONT=2.75V, VPWR=2V, ILOAD=10mA
VCONT=2.7V, to 12V
VPWR=3.3V to 5.5V, ILOAD=10mA to 8A
IO = 10mA, VIN =5V, T= 25 °C
MIN
TYP
-1
-2
1.238
1.230
V
(Vin-Vout)=3V
VIN =5V
IO = 10mA, VIN =5V
T= 25 °C, 30ms pulse
T= 25 °C, VIN =5V
TO-220
Junction to Tab
Junction to Ambient
DD Package
Junction to Tab
Junction to Ambient
8
200
60
0.5
0.003
80
3.0
60
3.0
60
3.0
60
3.0
60
mA
A
mA
%
%/W
dB
°C/W
Note: Output Switch tests are performed under pulsed conditions to minimize power dissipation
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556
www.baylinear.com
Advance Information- These data sheets contain descriptions of products that are in development. The specifications are based on the engineering calculations,
computer simulations and/ or initial prototype evaluation.
Preliminary Information- These data sheets contain minimum and maximum specifications that are based on the initial device characterizations. These limits are
subject to change upon the completion of the full characterization over the specified temperature and supply voltage ranges.
The application circuit examples are only to explain the representative applications of the devices and are not intended to guarantee any circuit
design or permit any industrial property right to other rights to execute. Bay Linear takes no responsibility for any problems related to any
industrial property right resulting from the use of the contents shown in the data book. Typical parameters can and do vary in different
applications. Customer’s technical experts must validate all operating parameters including “ Typical” for each customer application.
LIFE SUPPORT AND NUCLEAR POLICY
Bay Linear products are not authorized for and should not be used within life support systems which are intended for surgical
implants into the body to support or sustain life, in aircraft, space equipment, submarine, or nuclear facility applications without
the specific written consent of Bay Linear President.
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556
www.baylinear.com