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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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SC2604 Fiches technique(PDF) 1 Page - Semtech Corporation |
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SC2604 Fiches technique(HTML) 1 Page - Semtech Corporation |
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1 / 14 page  POWER MANAGEMENT January 4, 2008 Simple PWM Boost Controller with Input Disconnect FET Drive SC2604 www.semtech.com Typical Application Circuit Features Input Voltage Range: 4.5V to 3.5V % Voltage Reference Accuracy Up to 95% Efficiency Input Disconnect FET Drive In-rush Current Control Internal Compensation Programmable Current Limit Programmable Soft Start 800mA Typical PWM Gate Drive 400kHz Switching Frequency Under Voltage Lockout <200uA Shutdown Current -40oC to +85oC Temperature Range MSOP-8 Package, Fully WEEE and RoHS Compliant Applications Portable Devices Flat Panel TV TV Set Top Box Auxiliary Supplies Peripheral Card Supplies Industrial Power Supply High Density DC/DC Conversion Description The SC2604 is a versatile, low-cost, voltage-mode PWM controller designed for boost DC/DC power supply applications. It features input disconnect FET driver allowing power source and load separation at shutdown mode, which eliminates possible leakage current from source to load. Also, it prevents catastrophic failure when output is shorted during operation. The SC2604 also includes temperature compensated voltage reference, internal ramp, current limit comparator, internally compensated error amplifier, and floating driver with charge pump. Programmable soft start controls in-rush current and reduces output voltage overshoot. Hiccup mode over-current protection allows system auto- retry and ease of trouble shooting. Internally compensated feedback loop makes power supply design simple, and eliminates the need for external compensation network. The SC2604 is available in MSOP-8 package with rated temperature range of -40oC to +85oC. Figure 1. 12V to 25V/1A Boost Converter with Over Current Protection |
Numéro de pièce similaire - SC2604 |
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Description similaire - SC2604 |
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