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TPS62701YZF Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS62701YZF Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 25 page 1 FEATURES DESCRIPTION APPLICATIONS PVIN AVIN PGND AGND FB VCON EN SW V 2.5Vto6.0V IN 3.3 H m 4.7 F m 10 F m V =2.5xVCON OUT 1.3Vto3.09V TPS62700, TPS62701 www.ti.com................................................................................................................................................... SLVS784B – DECEMBER 2007 – REVISED JUNE 2008 2 MHz 650 mA Step Down Converter for RF Power Amplifiers in Tiny 8-pin WCSP Package • High-Efficiency Step-Down Converter • Output Current up to 650 mA The TPS6270x device is a high-efficiency synchronous step-down DC-DC converter optimized • V IN Range From 2.5 to 6.0 V for RF power-amplifier (PA) applications. It provides • 2.0-MHz Fixed-Frequency Operation up to 650 mA of output current from a single Li-Ion • Clock Dithering (TPS62701) cell. • Dynamic Voltage Control With External The device converts input voltages from 2.5 to 6.0 V Reference (1.3 V to 3.09 V) down to an output voltage set by an external analog reference voltage applied to the pin VCON. The • Fast Output-Voltage Settling (1.3 V to 3.09 V in output voltage follows the external reference by an 20 µs) internal gain of 2.5 within the limits of 1.3 V to 3.09 V. • Soft Start This scheme adjusts the output voltage of the DC/DC • Overload Protection converter and therefore the output power of an RF-PA. • Undervoltage Lockout • Thermal Protection The TPS6270x operates in fixed-frequency PWM mode at a 2.0-MHz switching frequency to minimize • 8-Pin WCSP Package RF interference. This converter operates with only three small external components; an input capacitor, inductor and output capacitor. The TPS62701 has in • Cell Phones, Smart Phones addition a built-in clock-dithering circuit to reduce RF • Battery-Powered RF Amplifier noise. The TPS6270x is available in a tiny 8 pin lead free WCSP package for smallest solution size. TYPICAL APPLICATION 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 © 2007–2008, 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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