LM2576HVSX-15

Product Summary

The LLM2576HVSX-15 is a SIMPLE SWITCHER Step-Down Voltage Regulator, which is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. The LLM2576HVSX-15 is available in the voltages of 15V output version. Requiring a minimum number of external components, the LLM2576HVSX-15 is simple to use and include internal frequency compensation and a fixed-frequency oscillator. The LLM2576HVSX-15 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 of inductors optimized for use with the LLM2576HVSX-15 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50 μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

Parametrics

LM2576HVSX-15 absolute maximum ratings: (1)Maximum Supply Voltage: 63V; (2)ON /OFF Pin Input Voltage: -0.3V ≤ V ≤ +VIN; (3)Output Voltage to Ground (Steady State): -1V; (4)Power Dissipation: Internally Limited; (5)Storage Temperature Range: -65℃ to +150℃; (6)Maximum Junction Temperature: 150℃; (7)Minimum ESD Rating (C = 100 pF, R = 1.5 kΩ): 2kV; (8)Lead Temperature (Soldering, 10 Seconds): 260℃.

Features

LM2576HVSX-15 features: (1)15V output version; (2)Adjustable version output voltage range, 1.23V to 37V (57V for HV version) ±4% max over line and load conditions; (3)Guaranteed 3A output current; (4)Wide input voltage range, 40V up to 60V for HV version; (5)Requires only 4 external components; (6)52 kHz fixed frequency internal oscillator; (7)TTL shutdown capability, low power standby mode; (8)High efficiency; (9)Uses readily available standard inductors; (10)Thermal shutdown and current limit protection; (11)P+ Product Enhancement tested.

Diagrams