SPX2840

Features:

• Adjustable Output Down To 1.25V Or Fixed 3.3V
• Output Current Of 4A
• Low Dropout Voltage
• Extremely Tight Load And Line Regulation
• Current & Thermal Limiting
• Standard 3-Terminal Low Cost TO-220


Application

• Powering Intel Pentium^TM P from +5V Supplies
• Power PC Supplies
• SMPS Post-Regulator
• High Efficiency "Green" Computer Systems
• High Efficiency Linear Power Supplies
• Portable Instrumentation
• Constant Current Regulators
• Adjustable Power Supplies
• Battery Charger


Specifications

Power Dissipation............................................Internally Limited
Lead Temp. (Soldering, 10 Seconds) ............................... 300°C
Storage Temperature Range ............................ -65° to +150°C
Operating Junction Temperature Range
SPX2840 Control Section.....................................0C° to +125°C
SPX2840 Power Transistor..................................0C° to +150°C
Input Supply Voltage ........................................................ +10V
Input to Output Voltage Differential ................................. +10V




Description

The SPX2840 is a low power 4A Adjustable Voltage Regulator that is very easy to use. It requires only 2 external resistors to set the output voltage. This device is an excellent choice for use in Powering Intel Microprocessor to convert from +5V to 3.3V supplies and as a post regulator for switching supplies applications. The SPX2840 features low dropout of a maximum 1.3 volts.

The SPX2840 offers over-current limit and full protection against reversed input polarity, reversed load insertion, over temperature operation, and positive and negative transient voltage. On-Chip trimming adjusts the reference voltage to 1%. The IQ of this device flows in to the load, which increases the efficiency.

The SPX2840 is offered in a 3-pin TO-220 package compatible with other 3 terminal regulators. For a 3A low dropout regulator refer to the SPX2830 data sheet.