DC-DC преобразователь интегральный
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Технические характеристики

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Корпус D2PAK5
Тип преобразователя
Входное напряжение
Выходное напряжение
Максимальный выходной ток
Кол-во выходов
Частота преобразования
Максимальная скважность преобразования
Встроенные возможности
Примечание 3 A, 12 V, 52 kHz Buck PWM Switching Regulator
Рабочая температура
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Аналоги 1

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Тип Наименование Корпус Упаковка i Тип Режим Uвх Uвых Iвых Выходов F преобр Iпотр nmax Опции Примечание T раб Карточка
P= LM2576S-12/NOPB (TI) TO2636 в линейках 45 шт Понижающий DC/DC со встроенным ключом Enable, Over Current Protection

Файлы 1

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LM2576 3.0 A, 15 V, Step−Down Switching Regulator The LM2576 series of regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step−down switching regulator (buck converter). All circuits of this series are capable of driving a 3.0 A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output version. These regulators were designed to minimize the number of external components to simplify the power supply design. Standard series of inductors optimized for use with the LM2576 are offered by several different inductor manufacturers. Since the LM2576 converter is a switch−mode power supply, its efficiency is significantly higher in comparison with popular three−terminal linear regulators, especially with higher input voltages. In many cases, the power dissipated is so low that no heatsink is required or its size could be reduced dramatically. 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. The LM2576 features include a guaranteed ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency (±2% over 0°C to 125°C). External shutdown is included, featuring 80 mA (typical) standby current. The output switch includes cycle−by−cycle current limiting, as well as thermal shutdown for full protection under fault conditions. http://onsemi.com 5 Heatsink surface connected to Pin 3 TO−220 T SUFFIX CASE 314D 1 5 Pin Features • 3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions • Adjustable Version Output Voltage Range, 1.23 to 37 V ±4% • • • • • • • • • • Maximum Over Line and Load Conditions Guaranteed 3.0 A Output Current Wide Input Voltage Range Requires Only 4 External Components 52 kHz Fixed Frequency Internal Oscillator TTL Shutdown Capability, Low Power Standby Mode High Efficiency Uses Readily Available Standard Inductors Thermal Shutdown and Current Limit Protection Moisture Sensitivity Level (MSL) Equals 1 Pb−Free Packages are Available 1. 2. 3. 4. 5. Vin Output Ground Feedback ON/OFF D2PAK D2T SUFFIX CASE 936A 1 5 Heatsink surface (shown as terminal 6 in case outline drawing) is connected to Pin 3 ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 24 of this data sheet. DEVICE MARKING INFORMATION See general marking information in the device marking section on page 25 of this data sheet. Applications • • • • • • TO−220 TV SUFFIX CASE 314B 1 Simple High−Efficiency Step−Down (Buck) Regulator Efficient Pre−Regulator for Linear Regulators On−Card Switching Regulators Positive to Negative Converter (Buck−Boost) Negative Step−Up Converters Power Supply for Battery Chargers © Semiconductor Components Industries, LLC, 2006 January, 2006 − Rev. 8 1 Publication Order Number: LM2576/D PDF
Документация на серию LM2576 


Дата модификации: 11.01.2006

Размер: 275.5 Кб

28 стр.

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