G5ELM2576 Datasheet | GTM

.. ISSUED DATE :2005/04/15 REVISED DATE : G5ELM 2576 Simple Switcher 3A Step-Down Voltage Regulator The G5ELM2576 series of regulators are monolithic integrated circuits that provide all active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltage of 3.3v, 5v, 12v, 15v and an adjustable output version. Requiring a minimum number of external ponents, these regulators are simple to use and include internal frequency pensation and a fixed-frequency oscillator. The G5ELM2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series if inductors optimized for use with the G5ELM2576 are available from several different manufactures. This feature greatly simplifies the design of switch-mode power supplies. Other feature include a guaranteed 4% to tolerance on output voltage within specified input voltages and output load condition, and 10% on the oscillator frequency. External shutdown is included, featuring 50u A (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault condition. Description Features Applications 3.3V, 5.0V, 12V, 15V and adjustable output versions Adjustable version output voltage range , 1.23V to 37V Guaranteed 3A output current Wide input voltage range Efficient pre-regulator for linear regulators Requires only 4 external ponents 52k Hz fixed frequency oscillator TTL shutdown capability, low power standby mode High efficiency Uses readily available standard inductors Thermal shutdown and current limit protection Simple high-efficiency step-down (buck) regulator On-card switching regulators Positive to negative converter (Buck-Boost) % max over line and load conditions Packa...