Серия DC-DC интегральных преобразователей LM2576

UMW

Общие характеристики

 Раздел DC-DC преобразователи интегральные
Тип преобразователя
Максимальный выходной ток
Кол-во выходов
Частота преобразования
Рабочая температура

Документация на серию LM2576

UMW R UMW LM2576 Description The LM2576 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 versions. 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 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 of 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. Note: TheLM2576HV is not produced yet. Applications Features • • • • • • • • • • • • • • • 3.3V, 5V, 12V, 15V, and adjustable output versions Adjustable version output voltage range 1.23V to 37V (57V for HV version) ±4% max over line and load conditions Guaranteed 3A output current Wide input voltage range, 40V up to57V for HV version 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 Typical application 7V - 40V (57V for HV) UNREGULATED DC INPUT Figure 1.(Fixed Output Voltage Versions) LM2576/ FEEDBACK LM2576HV - 4 L1 OUTPUT 5.0 +VIN 1 2 + GND Simple high-efficiency step-down (buck) regulator Efficient pre-regulator for linear regulators On-card switching regulators Positive to negative converter (Buck-Boost) 3 5 ON/OFF 100 H D1 CIN 1N5822 + COUT 1000 F +5V REGULATED OUTPUT 3A LOAD Package Types TO220B-5L www.umw-ic.com TO220-5L 1 TO263-5L 友台半导体有限公司 PDF
Документация на серию LM2576 

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Дата модификации: 29.01.2022

Размер: 2.66 Мб

10 стр.

    Товары серии LM2576

    Наименование i Упаковка Корпус Uвх Uвых
    LM2576HVS-12 (YOUTAI)
     
     
    		 в ленте 500 шт TO2635
    LM2576HVS-3.3 (YOUTAI)
     
     
    		 в ленте 500 шт TO2635
    LM2576HVS-5.0 (YOUTAI)
     
     
    		 в ленте 500 шт TO2635
    LM2576HVS-ADJ (YOUTAI)
     
     
    		 в ленте 500 шт TO2635
    LM2576HVT-12 (YOUTAI)
     
     
    		 TO-220-3 — —
    LM2576HVT-15 (YOUTAI)
     
     
    		 TO-220-3 — —
    LM2576HVT-3.3 (YOUTAI)
     
     
    		 TO-220-3 — —
    LM2576HVT-5.0 (YOUTAI)
     
     
    		 TO-220-3 — —
    LM2576HVT-ADJ (YOUTAI)
     
     
    		 TO-220-3 — —
    LM2576S-12 (YOUTAI)
     
     
    		 в ленте 500 шт TO2635
    LM2576S-3.3 (YOUTAI)
     
     
    		 в ленте 500 шт TO2635
    LM2576S-5.0 (YOUTAI)
     
     
    		 в ленте 500 шт TO2635
    LM2576S-ADJ (YOUTAI)
     
     
    		 в ленте 800 шт TO2635
    LM2576T-12 (YOUTAI)
     
     
    		 TO-220-3 — —
    LM2576T-15 (YOUTAI)
     
     
    		 TO-220-3 — —
    LM2576T-3.3 (YOUTAI)
     
     
    		 TO-220-3 — —
    LM2576T-5.0 (YOUTAI)
     
     
    		 TO-220-3 — —
    LM2576T-ADJ (YOUTAI)
     
     
    		 TO-220-3 — —