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SC183C Datasheet(PDF) 1 Page - Semtech Corporation |
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SC183C Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 20 page  POWER MANAGEMENT SC183C 2.5MHz, 2A Synchronous Step-Down Regulator July 28, 2010 Features V IN Range: 2.9 – 5.5V V OUT Options: 0.8 - 3.3V Up to 2A Output Current Ultra-Small Footprint, <1mm Height Solution 2.5MHz Switching Frequency Efficiency Up to 93% Low Output Noise Across Load Range Excellent Transient Response Start Up into Pre-Bias Output 100% Duty-Cycle Low Dropout Operation <1µA Shutdown Current Internal Soft Start Input Under-Voltage Lockout Output Over-Voltage, Current Limit Protection Over-Temperature Protection Adjustable Output Voltage 3mm x 3mm x 0.6mm thermally enhanced MLPQ-UT16 package -40 to +85°C Temperature Range Pb-free, Halogen free, and RoHS/WEEE compliant Applications Office Automation and Computing Set-Top Box LCD TV Network Cards Printer Description The SC183C is a 2A synchronous step-down regulator designed to operate with an input voltage range of 2.9 to 5.5 Volts. The device offers fifteen pre-determined outputs voltages via four control pins programmable from 0.8 to 3.3 Volts. The control pins allow for on-the-fly voltage changes, enabling system designers to implement dynamic power savings. The SC183C is also capable of adjusting output voltage via an external resistor divider. The device operates with a fixed 2.5MHz oscillator fre- quency, allowing the use of small surface mount external components. Connecting CTL0 — CTL3 to logic low forces the device into shutdown mode reducing the supply current to less than 1µA. Connecting any of the control pins to logic high enables the converter and sets the output voltage according to Table 1. Other features include under- voltage lockout, soft-start to limit in-rush current, and over-temperature protection. The SC183C is available in a thermally-enhanced, 3mm x 3mm x 0.6mm MLPQ-UT16 package and has a rated tem- perature range of -40 to +85°C. Typical Application Circuit CTL0 CTL1 PGND AVIN CIN 10µF VIN VOUT 1.50V / 2.0A COUT 22µF L 1.0µH LX VOUT SC183C CAVIN 1µF RAVIN 10 PVIN CTL2 AGND CTL3 CTL0 CTL1 CTL2 CTL3 |
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