TPS62421 Datasheet | Texas Instruments

Features - 1 High Efficiency up to 95% - VIN Range from 2.5 V to 6 V - 2.25-MHz Fixed Frequency Operation - Output Current 600 m A and 1000 m A - Adjustable Output Voltage from 0.6 V to VIN - Pin Selectable Output Voltage Supports Simple Dynamic Voltage Scaling - Optional Easy Scale™ One-Pin Serial Interface for Dynamic Output Voltage Adjustment - Power-Save Mode at Light Load Currents - 180° Out of Phase Operation - Output Voltage Accuracy in PWM Mode ±1% - Typical 32-μA Quiescent Current for both Converters - 100% Duty Cycle for Lowest Dropout - Available in a 10-Pin VSON (3 mm × 3 mm) 2 Applications - Cell Phones, Smart-phones - PDAs, Pocket PCs - OMAP™ and Low Power DSP Supply - Portable Media Players - Digital Radios - Digital Cameras 3 Description The TPS6242x device is a synchronous dual stepdown DC- DC converter. It provides two independent output voltage rails powered by 1-cell Li-Ion or 3-cell Ni MH/Ni CD batteries. The device is also suitable to operate from a standard 3.3-V or 5-V voltage rail. With an input voltage range of 2.5 V to 6 V, the TPS6242x is ideal for battery-powered portable applications like smart phones, PDAs, and other portable equipment. With the Easy Scale™ serial interface the output voltages can be modified during operation. It therefore supports dynamic voltage scaling for low power DSP and processors. The TPS6242x operates at 2.25-MHz fixed switching frequency and enter the power-save mode operation at light load currents to maintain high efficiency over the entire load current range. For low-noise applications the devices can be forced into fixedfrequency PWM mode by pulling the MODE/DATA pin High. In the shutdown mode, the current consumption is reduced to 1.2 μA. The device allows the use of small inductors and capacitors to achieve a small solution size. The TPS6242x operates over a free-air temperature range of - 40°C to 85°C. It is available in a 10-pin leadless package (3 mm × 3 mm VSON) Device Information(1) PART...