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The The AMS1587 series of adjustable and fixed voltage regulators are designed to provide 3A output current and to operate down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.3V at maximum output current, decreasing at lower load currents.
On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload conditions on both the regulator and power source circuitry.
The AMS1587 devices are pin compatible with older three-terminal regulators and are offered in 3 lead TO-220 package, 3 and 2 lead TO-263 (Plastic DD) and TO-252 (D PAK) package.
AMS1587 Maximum Ratings
Power Dissipation Internally limited Input Voltage 15V Operating Junction Temperature Range Control Section 0°C to 125°C Power Transistor 0°C to 150°C Storage temperature - 65°C to +150°C Soldering information Lead Temperature (10 sec) 300°C Thermal Resistance TO-220 package JA= 50°C/W TO-263 package JA= 30°C/W * TO-252 package JA= 100°C/W * With package soldering to 0.5in2 copper area over backside ground plane or internal power plane JA can vary from 20°C/W to >40°C/W depending on mounting technique.
AMS1587 Features
· Three Terminal Adjustable or Fixed Voltages 1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V · Output Current of 3A · Operates Down to 1V Dropout · Fast Transient response · Line Regulation: 0.015% · TO-220, TO-263 and TO-252 packages available
AMS1587 Typical Application
· High Efficiency Linear Regulators · Post Regulators for Switching Supplies · Microprocessor Supply · Battery Chargers · Constant Current Regulators · Notebook/Personal Computer Supplies · Portable Instrumentation