SC21152AULTRC Semtech

SC21152 Tiny 1.2A Synchronous Buck Regulator with Power Good POWER MANAGEMENT Features Description Input voltage range 2.3V to 5.5V The SC21152 is an ultra high efficiency 1.2A DC/DC buck 1.2A continuous output current regulator available in a small MLPD package. These fea- 4MHz switching frequency tures make the SC21152 perfect for small form factor con- Adjustable Output Voltage sumer applications where high efficiency is essential. 1% output voltage accuracy SC21152 is an Adaptive On-Time 4MHz switching regula- Adaptive On-Time architecture tor at full load conditions. Under light load conditions it Up to 100% duty cycle transitions into PFM Power Save Mode and reduces switch- Up to 96% peak efficiency ing frequency thus saving energy. High switching fre- Power Save mode for efficient light load operation quency operation allows the use of a very small 0.47H >90% efficiency 30mA to 75mA inductor along with small input and output capacitors to 0.1A shutdown current minimize overall circuit size. 21A quiescent current Power Good Indicator The SC21152 is highly configurable with a wide range of Pre-bias startup protection factory options including internal soft start time, fixed or Internal soft start adjustable output voltage, automatic output discharge, 1.5mm x 2mm, 6-Lead MLPD package and switching frequency. WEEE and RoHS compliant and halogen-free The SC21152 is oeff red in a small 6-Lead 1.5mm x 2mm MLPD package. Applications Tablet PCs GPS devices Battery powered equipment Portable devices Smart Phones Wearable Electronics Typical Application Circuit Fixed Output Voltage Adjustable Output Voltage 1.2A 1.2A 2.3V-5.5V Supply 2.3V-5.5V Supply Output 0.47H 0.47H Output LX LX VIN VIN Power Power 4.7F SC21152 10F 4.7F SC21152 10F Good Good PG FB PG FB EN EN GND GND EN EN Rev 1.0 2015 Semtech Corporation 1SC21152 Ordering Information (3) Options (1)(2) Device Package (3) (3) (3) Output Soft Start Output Discharge SC21152AULTRC Adjustable 100s Automatic 1.5mm x 2mm 6-Lead MLPD SC21152EVB Evaluation Board 1.5mm x 2.0mm 6-Lead MLPD Notes: (1) Available in tape and reel only. A reel contains 3,000 devices. (2) Lead-free packaging only. Device is WEEE and RoHS compliant and halogen-free. (3) For other device options not shown contact Semtech Marketing. The following options can be made available: VOUT options : adustable and fixed output voltage from 0.8V to 3.6V in 50mV increments. Soft Start options: internal 100s, 200s, 400s, or 800s. Output Discharge options: Automatic Discharge and No Discharge. Frequency: The default operating frequency is 4MHz with options of 2.2MHz, 3MHz, or 6MHz. Pin Configuration Marking Information TO P V IE W 1 6 TO P V IE W R C A 2 5 1.5x2.0 (m m ) 6-Lead M LP D 6-Lead M LP D 1.5x2.0 (m m ) oyw 3 4 Pin Assignments 6-Lead MLPD Pin Name 1 VIN 1.5x2.0 (mm) 6-Lead MLPD Marking Diagram 2 PG RCA = Device Marking Code 3 EN oyw = Pin 1 Indicator and Date Code 4 FB 5 GND 6 LX PAD PAD 2