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SC21152 Datasheet(PDF) 1 Page - Gennum Corporation |
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SC21152 Datasheet(HTML) 1 Page - Gennum Corporation |
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1 / 18 page  © 2015 Semtech Corporation POWER MANAGEMENT 1 SC21152 Tiny 1.2A Synchronous Buck Regulator with Power Good Typical Application Circuit Rev 1.0 Features Input voltage range — 2.3V to 5.5V 1.2A continuous output current 4MHz switching frequency Adjustable Output Voltage 1% output voltage accuracy Adaptive On-Time architecture Up to 100% duty cycle Up to 96% peak efficiency Power Save mode for efficient light load operation >90% efficiency 30mA to 75mA 0.1μA shutdown current 21μA quiescent current Power Good Indicator Pre-bias startup protection Internal soft start 1.5mm x 2mm, 6-Lead MLPD package WEEE and RoHS compliant and halogen-free Applications Tablet PCs GPS devices Battery powered equipment Portable devices Smart Phones Wearable Electronics Description The SC21152 is an ultra high efficiency 1.2A DC/DC buck regulator available in a small MLPD package. These fea- tures make the SC21152 perfect for small form factor con- sumer applications where high efficiency is essential. SC21152 is an Adaptive On-Time 4MHz switching regula- tor at full load conditions. Under light load conditions it transitions into PFM Power Save Mode and reduces switch- ing frequency thus saving energy. High switching fre- quency operation allows the use of a very small 0.47μH inductor along with small input and output capacitors to minimize overall circuit size. The SC21152 is highly configurable with a wide range of factory options including internal soft start time, fixed or adjustable output voltage, automatic output discharge, and switching frequency. The SC21152 is offered in a small 6-Lead 1.5mm x 2mm MLPD package. Adjustable Output Voltage 2.3V-5.5V Supply SC21152 0.47µH 1.2A Output EN VIN LX EN GND FB 10µF 4.7µF PG Power Good Fixed Output Voltage 2.3V-5.5V Supply SC21152 0.47µH 1.2A Output EN VIN LX EN GND FB 10µF 4.7µF PG Power Good |
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Similar Description - SC21152 |
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