SC2604
POWER MANAGEMENT Features
Simple PWM Boost Controller with Input Disconnect FET Drive
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 autoretry 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.
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
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