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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LM3205TLX/NOPB 데이터시트(PDF) 1 Page - Texas Instruments |
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LM3205TLX/NOPB 데이터시트(HTML) 1 Page - Texas Instruments |
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1 / 28 page  FB EN VDD PVIN VCON SW VIN 2.7V to 5.5V VOUT 0.8V to 3.6V 10 PF 4.7 PF SGND PGND 3.3 PH LM3205 VOUT = 2.5 x VCON LM3205 www.ti.com SNVS388E – JULY 2005 – REVISED APRIL 2013 LM3205 650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers Check for Samples: LM3205 1 FEATURES DESCRIPTION The LM3205 is a DC-DC converter optimized for 2 • 2 MHz (typ.) PWM Switching Frequency powering RF power amplifiers (PAs) from a single • Operates from a Single Li-Ion Cell (2.7V to Lithium-Ion cell, however they may be used in many 5.5V) other applications. It steps down an input voltage • Variable Output Voltage (0.8V to 3.6V) from 2.7V to 5.5V to a variable output voltage from 0.8V(typ.) to 3.6V(typ.). Output voltage is set using a • Fast Output Voltage Transient (0.8V to 3.6V in VCON analog input for controlling power levels and 20µs) efficiency of the RF PA. • 650mA Maximum Load Capability The LM3205 offers superior performance for mobile • High Efficiency (96% Typ at 4.2VIN, 3.4VOUT at phones and similar RF PA applications. Fixed- 400mA) from Internal Synchronous frequency PWM operation minimizes RF interference. Rectification Shutdown function turns the device off and reduces • Current Overload Protection battery consumption to 0.01 µA (typ.). • Thermal Overload Protection The LM3205 is available in DSBGA package and • Packages WSON package. For all other package options contact your local TI sales office. – 8-Pin DSBGA (Lead Free) A high switching frequency (2 MHz) allows use of tiny • 10-Pin WSON surface-mount components. Only three small external surface-mount components, an inductor and two APPLICATIONS ceramic capacitors are required. • Cellular Phones • Hand-Held Radios • RF PC Cards • Battery Powered RF Devices TYPICAL APPLICATION Figure 1. LM3205 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. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2005–2013, 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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