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LM3208 データシート(PDF) 1 Page - Texas Instruments |
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LM3208 データシート(HTML) 1 Page - Texas Instruments |
1 / 25 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 LM3208 VOUT = 2.5 x VCON LM3208 www.ti.com SNVS404B – APRIL 2006 – REVISED MARCH 2013 LM3208 650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers Check for Samples: LM3208 1 FEATURES DESCRIPTION The LM3208 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, it may be used in many 5.5V) other applications. It steps down an input voltage in • Adjustable Output Voltage (0.8V to 3.6V) the range from 2.7V to 5.5V to an adjustable output voltage of 0.8V to 3.6V. Output voltage is set by • Fast Output Voltage Transient (0.8V to 3.4V in using a VCON analog input to control power levels and 25µs typ.) efficiency of the RF PA. • 650mA Maximum Load Capability The LM3208 offers superior performance for mobile • High Efficiency (95% typ. at 3.9VIN, 3.4VOUT at phones and similar RF PA applications. Fixed- 400mA) frequency PWM operation minimizes RF interference. • 8-pin DSBGA Package A shutdown function turns the device off and reduces battery consumption to 0.01 µA (typ.). • Current Overload Protection • Thermal Overload Protection The LM3208 is available in an 8-pin lead-free DSBGA package. A high switching frequency (2 MHz typ.) allows use of tiny surface-mount components. Only APPLICATIONS three small external surface-mount components, an • Cellular Phones inductor and two ceramic capacitors, are required. • Hand-Held Radios • RF PC Cards • Battery Powered RF Devices TYPICAL APPLICATION Figure 1. LM3208 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 © 2006–2013, 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. |
同様の部品番号 - LM3208_15 |
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同様の説明 - LM3208_15 |
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