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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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SC2608BSTRT bảng dữ liệu(PDF) 1 Page - Semtech Corporation |
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SC2608BSTRT bảng dữ liệu(HTML) 1 Page - Semtech Corporation |
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1 / 11 page  POWER MANAGEMENT Draft 1 www.semtech.com SC2608B Simple, Synchronous Voltage Mode PWM Controller Features Revision 4: Jan. 2007 The SC2608B is a versatile voltage-mode PWM control- ler designed for use in step down DC/DC power supply applications. A simple, fixed frequency, highly efficient buck regulator can be implemented using the SC2608B with minimal external components. The input voltage range is from +5V to +12V. Internal level shift and drive circuitry eliminates the need for an expensive P-channel, high-side MOSFET. The small device footprint allows for compact circuit design. SC2608B features include temperature compensated voltage reference, triangle wave oscillator, current limit comparator, and an externally compensated error ampli- fier. Current limit is implemented by sensing the voltage drop across the bottom MOSFET R DS(ON). The SC2608B operates at a fixed frequency of 250kHz providing an optimum compromise between efficiency , external component size, and cost. SC2608B has a thermal protection circuit, which is activated if the junction temperature exceeds 150 OC. +5V or +12V input voltage 250kHz operation High efficiency (>90%) 1.25% Voltage feedback accuracy over tempera- ture Hiccup mode over current protection 1.2A output drive R DS(ON) Current sensing for protection Industrial temperature range Available in SO-8 package Integrated boot strap diode Termination supplies Low cost microprocessor supplies Peripheral card supplies Industrial power supplies High density DC/DC conversion Figure 1 Description Applications Typical Application Circuit Thermal Shut down Fully WEEE and RoHS Compliant |
Số phần tương tự - SC2608BSTRT |
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Mô tả tương tự - SC2608BSTRT |
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