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TPS62751DSKR Datasheet(PDF) 1 Page - Texas Instruments |
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TPS62751DSKR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 31 page VIN GND EN FB Ilim_L TPS62750 CO L CIN 2.2 µH VIN 5.0V R4 R1 R2 Cff L1 H/L Ilim_U R3 AVIN PGND CBULK VOUT 3.6V TPS62750, TPS62751 www.ti.com ................................................................................................................................................. SLVS955A – JULY 2009 – REVISED SEPTEMBER 2009 High Efficiency Step-Down Converter for USB Applications Check for Samples :TPS62750, TPS62751 1 FEATURES APPLICATIONS • USB Wireless Modems • Efficiency > 90% at Nominal Operating Conditions • Portable USB peripherals • Handheld Computers • Programmable Average Input Current Limits for USB Applications DESCRIPTION – 50mA to 300mA for Low Current Limit Range The TPS6275x device is a highly efficient synchronous step down dc-dc converter optimized for – 300mA to 1.3A for High Current Limit USB powered portable applications. It can provide up Range to 1300mA average input current and is ideal for – ±10% Current Accuracy applications connected to a USB host. • Stable Output Voltage for Load Transients to With an input voltage range of 2.9 V to 6.0V, the Minimize Overshoot at Load Step Response device supports batteries with extended voltage • Hot Plug and Reverse Current Protection range and is ideal for powering USB applications • Automatic PFM/PWM Mode transition where USB compliance is required. (TPS62750) The TPS62750 operates at 2.25-MHz fixed switching • Forced PWM for Noise Sensitive Applications frequency and enters Power Save Mode operation at (TPS62751) light load currents to maintain high efficiency over the entire load current range. The TPS62751 operates in • VIN Range From 2.9V to 6V Forced PWM mode allowing use in applications that • Adjustable VOUT From 0.8V to 0.85×VIN are noise sensitive. An output discharge allows the • Softstart for Inrush Current Prevention load to discharge in shutdown. • 2.25 MHz Fixed Frequency Operation The 10% accurate average input current limit can be • Short Cicruit and Thermal Shutdown programmed with an external resistor, allowing use in applications such as USB, where the current drawn Protection from the bus must be limited to 500mA. • Available in a 2.5 × 2.5 10 pin SON Package The TPS6275x allows the use of small inductors and capacitors to achieve a small solution size. The TPS6275x is available in a 2,5mm × 2,5mm 10-pin SON package. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2009, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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