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LM2576-XXE5 датащи(PDF) 1 Page - Cystech Electonics Corp. |
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LM2576-XXE5 датащи(HTML) 1 Page - Cystech Electonics Corp. |
1 / 12 page CYStech Electronics Corp. Spec. No. : C543E5/F5 Issued Date : 2004.02.27 Revised Date :2007.12.13 Page No. : 1/12 LM2576-XXE5/F5 CYStek Product Specification Simple Switcher 3A Step- Down Voltage Regulator LM2576-XXE5/F5 Features ● 3.3V, 5V, 12V, 15V, and adjustable output versions. ● Adjustable version output voltage range, 1.23V to 37V±4% max over line and load conditions. ● Guaranteed 3A output current. ● Wide input voltage range. ● Requires only 4 external components ● 52 kHz fixed frequency oscillator ● TTL shutdown capability, low power standby mode. ● High efficiency ● Uses readily available standard inductors. ● Thermal shutdown and current limit protection. Description The LM2576-XXE5/F5 series of regulators are monolithic integrated circuits that provide all the 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 voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator. The LM2576-XXE5/F5 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 LM2576 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 50μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions. Applications ● Simple high-efficiency step-down (buck) regulator. ● Efficient pre-regulator for linear regulators. ● On-card switching regulators. ● Positive to negative converter (Buck-Boost). |
Аналогичный номер детали - LM2576-XXE5 |
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Аналогичное описание - LM2576-XXE5 |
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