2.7A, 1.2V L.D.O. VOLTAGE REGULATOR

LM1589

FEATURES

● Low Dropout Voltage 1.3V at 2.7A Output Current

● Fast Transient Response

● 0.2% Line Regulation

● Load Regulation : 0.15% typical

● Internal Thermal and Current Limiting

● Surface Mount Package TO-220 & TO-263 (D2 Package)

● On-chip thermal Limiting

● Moisture Sensitivity Level 3

APPLICATIONS

● Battery Charger

● Low voltage logic supplies

● Constant Current Regulators

● Portable Instrumentation

● High Efficiency Linear Power Supplies

● High Efficiency "Green" Computer Systems

● SMPS Post-Regulator

● Power PC Supplies

● Powering VGA & Sound Card

ORDERING INFORMATION

DESCRIPTION

TEST & TYPICAL APPLICATION CIRCUIT

2008 - Ver 1.0

HTC

−

1 −

Device Name

Package

LM1589T-X.X

TO-220

LM1589R-X.X

TO263 (D2)

1. Adj/Gnd

2. Output

3. Input

TO-220 PKG

TO-263 PKG

The LM1589 is a low dropout three-terminal regulator with 2.7A output current capability.

This device has been optimized for V TT bus termination, where transient response and mini-mum

input voltage are critical.

The LM1589 offers fixed 1.2V with 2.7A current capability for a GTL+ bus V TT termination.

Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip

thermal limiting pro-vides protection against any combination of overload and ambient temperature

that would create excessive junction temperatures.

The LM1589 is available in the industry-standard TO-220, TO-263 power packages.