TPS62651

TPS62650 CSP-9 TPS62651 www.ti.com SLVS808B – AUGUST 2009 – REVISED JULY 2011 800-mA, 6-MHz HIGH-EFFICIENCY STEP-DOWN CONVERTER WITH I2CTM COMPATIBLE INTERFACE IN CHIP SCALE PACKAGING Check for Samples: TPS62650, TPS62651 FEATURES 1 2 86% Efficiency at 6 MHz Operation 38μA Quiescent Current Wide VIN Range From 2.3 V to 5.5 V 6MHz Regulated Frequency Operation Best-In-Class Load and Line Transient ±2% PWM DC Voltage Accuracy Automatic PFM/PWM Mode Switching Low Ripple Light-Load PFM I2C Compatible Interface up to 3.4 Mbps Pin-Selectable Output Voltage (VSEL) Internal Soft-Start, <150-μs Start-Up Time Current Overload and Thermal Shutdown Protection Three Surface-Mount External Components Required (One MLCC Inductor, Two Ceramic Capacitors) Complete Sub 1-mm Component Profile Solution Total Solution Size <13mm2 Available in a 9-Pin NanoFree™ (CSP) Packaging APPLICATIONS SmartReflex™ Compliant Power Supply OMAP™ Application Processor Core Supply Cell Phones, Smart-Phones Micro DC-DC Converter Modules spacer VI 2.3 V .. 5.5 V C1 4.7mF TPS62650 VIN FB SW GND L1 0.47 mH VO C2 4.7mF VO = Roof VO = Floor I2C Bus up to 3.4 Mbips EN VSEL SDA SCL Figure 1. Typical Application DESCRIPTION The TPS6265x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6265x supports up to 800mA load current and allows the use of small, lo...