AMC2576

3A STEP DOWN VOLTAGE REGULATOR

The AMC2576 is a step-down switching regulator with all the required active functions. With TO-263 or TO-220 packages and adequate heat sink, it is capable of driving 3A load with excellent line and load regulations. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version.

The AMC2576 offers a high-efficiency replacement for popular three-terminal linear regulators. It requires only a minimum number of external components. Substantially, it
reduces not only the area of board size but also the size of the heat sink. In some cases, no heat sink is required.

±4% tolerance on output voltage within specified input voltages and load conditions is guaranteed. The oscillator frequency accuracy is within ±10%. External shutdown is
included, featuring 70µA(typical) standby current. The output switch includes cycle-by-cycle current limitation, as well as thermal shutdown for full protection under fault conditions.

• Guaranteed 3A output current for TO-220, TO-220B, and TO-263 packages.
• 2A output current for SOP-EP package with adequate heat sink area.
• 1A output current for SOP package with adequate VOUT/VIN ratio.
• 3.3V, 5V and adjustable output versions
• Wide input voltage range, up to 40V
• Internal oscillator of 52 KHz fixed frequency
• Wide adjustable output voltage range from 1.23V to 37V±4% over line and load conditions
• Low standby current, typ. 70µA, at shutdown mode
• Requires only 4 external components
• Thermal shut down and current limit protection
• P+ Product enhancement tested

• LCD monitors
• ADD-ON cards switching regulators
• High efficiency step-down regulators
• Efficient pre-regulator for linear regulators