Bay Bay Linear
Inspire Inspire the Linear Power
4.0A Low Dropout Voltage Regulator
Adjustable & Fix Output
B1587
Description
The Bay Linear B1587 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 B1587 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 B1587 is offer in a new LPDD (Low Profile TO263) package from 4.47 mm (DD) thickness down to only 1.27 mm (LPDD) total thickness. The B1587 is offered in a 3-pin TO-220, TO-263 & TO-252 packages compatible with other 3 terminal regulators. For 5A Low dropout Regulator refer to the B1585 data sheet.
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 1.1V Typ. Current & Thermal Limiting Standard 3-Terminal Low Cost TO-220, D2, D Packages Similar to industry Standard LT1085/LT1587/LT1585
•
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 Battery Charger
Pin Connection
Ordering Information
Devices
B1587T B1587S B1587D B1587J
TO-263-3 (S) (
Package
TO-220 TO-263 TO-252 LPDD
Temp.
0 °C to 70 °C 0 °C to 70 °C 0 °C to 70 °C 0 °C to 70 °C
TO-252 (D)
Bay Linear
1 2 3
1
2
3
ADJ/ GND
V OU VIN
T
Top View
Front View
LPDD (J)
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B1587
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
VIN PO θJC θJA TJ
Value
7 Internally Limited 3 50
Unit
V W °C/W °C
TSTG TLEAD
0 to 125 0 to 150 -65 to 150 260
Electrical Characteristics
(VIN = 4.75V to 5.25V; IO = 10mA to 4.0Amp, unless otherwise specified) Parameter Symbol Conditions
Output Voltage VO 0
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