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SL1509HV

产品详情

Description

      The SL1509HV are monolithic IC designed for a stepdownDC/DC converter, and own the ability of driving a 2A load without additional transistor. It saves board space.The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control having good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. If current limit function occurs and VFB is down below 0.5V, the switching frequency will be reduced. The SL1509HV operates at a switching frequency of 150KHz thus allow smaller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% on the oscillator frequency. The output version included fixed 3.3V, 5V, 12V,and an adjustable type. The chips are available in a standard 8-lead SOP-8 package.

Features

       Output Voltage: 3.3V, 5V, 12V and Adjustable OutputVersion

       Adjustable Version Output Voltage Range, 1.23V to18V+4%
       150KHz +15% Fixed Switching Frequency
       Voltage Mode Non-Synchronous PWM Control
       Thermal-Shutdown and Current-Limit Protection
       ON/OFF Shutdown Control Input
       Operating Voltage can be up to 48V
       Output Load Current: 2A
       SOP-8 Packages
       Low Power Standby Mode
       Built-in Switching Transistor On Chip
       SOP-8: Available in “Green” Molding Compound(No Br, Sb)
       Lead Free Finish/ RoHS Compliant (Note 1)

Applications

       Simple High-Efficiency Step-Down Regulator 
       On-Card Switching Regulators 
       Positive to Negative Converter

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