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AC/DC 和 DC/DC 轉換器 (整合式 FET)

TPS62700

現行

適用 RF 功率放大器並採微型 8 接腳 WCSP 封裝的 2MHz 650mA 降壓轉換器

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產品規格表

TPS62700

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.65 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1700 Switching frequency (max) (kHz) 2300 Features Adaptive/Dynamic Voltage Scaling, Enable, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.3 Vout (max) (V) 3.09 Iq (typ) (µA) 1000 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 0.65 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1700 Switching frequency (max) (kHz) 2300 Features Adaptive/Dynamic Voltage Scaling, Enable, Light Load Efficiency, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 1.3 Vout (max) (V) 3.09 Iq (typ) (µA) 1000 Duty cycle (max) (%) 100
DSBGA (YZF) 8 3.0625 mm² 1.75 x 1.75
  • High-Efficiency Step-Down Converter
  • Output Current up to 650 mA
  • VIN Range From 2.5 to 6.0 V
  • 2.0-MHz Fixed-Frequency Operation
  • Clock Dithering (TPS62701)
  • Dynamic Voltage Control With External Reference (1.3 V to 3.09 V)
  • Fast Output-Voltage Settling (1.3 V to 3.09 V in 20 µs)
  • Soft Start
  • Overload Protection
  • Undervoltage Lockout
  • Thermal Protection
  • 8-Pin WCSP Package
  • APPLICATIONS
    • Cell Phones, Smart Phones
    • Battery-Powered RF Amplifier
  • High-Efficiency Step-Down Converter
  • Output Current up to 650 mA
  • VIN Range From 2.5 to 6.0 V
  • 2.0-MHz Fixed-Frequency Operation
  • Clock Dithering (TPS62701)
  • Dynamic Voltage Control With External Reference (1.3 V to 3.09 V)
  • Fast Output-Voltage Settling (1.3 V to 3.09 V in 20 µs)
  • Soft Start
  • Overload Protection
  • Undervoltage Lockout
  • Thermal Protection
  • 8-Pin WCSP Package
  • APPLICATIONS
    • Cell Phones, Smart Phones
    • Battery-Powered RF Amplifier

The TPS6270x device is a high-efficiency synchronous step-down DC-DC converter optimized for RF power-amplifier (PA) applications. It provides up to 650 mA of output current from a single Li-Ion cell.

The device converts input voltages from 2.5 to 6.0 V down to an output voltage set by an external analog reference voltage applied to the pin VCON. The output voltage follows the external reference by an internal gain of 2.5 within the limits of 1.3 V to 3.09 V. This scheme adjusts the output voltage of the DC/DC converter and therefore the output power of an RF-PA.

The TPS6270x operates in fixed-frequency PWM mode at a 2.0-MHz switching frequency to minimize RF interference. This converter operates with only three small external components; an input capacitor, inductor and output capacitor. The TPS62701 has in addition a built-in clock-dithering circuit to reduce RF noise.

The TPS6270x is available in a tiny 8 pin lead free WCSP package for smallest solution size.

The TPS6270x device is a high-efficiency synchronous step-down DC-DC converter optimized for RF power-amplifier (PA) applications. It provides up to 650 mA of output current from a single Li-Ion cell.

The device converts input voltages from 2.5 to 6.0 V down to an output voltage set by an external analog reference voltage applied to the pin VCON. The output voltage follows the external reference by an internal gain of 2.5 within the limits of 1.3 V to 3.09 V. This scheme adjusts the output voltage of the DC/DC converter and therefore the output power of an RF-PA.

The TPS6270x operates in fixed-frequency PWM mode at a 2.0-MHz switching frequency to minimize RF interference. This converter operates with only three small external components; an input capacitor, inductor and output capacitor. The TPS62701 has in addition a built-in clock-dithering circuit to reduce RF noise.

The TPS6270x is available in a tiny 8 pin lead free WCSP package for smallest solution size.
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類型 標題 日期
* Data sheet 2 MHz 650 mA Step Down Converter for RF Power Amplifiers in Tiny 8-pin WCSP Pkg datasheet (Rev. B) 2008年 6月 23日
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018年 12月 11日
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 2018年 6月 22日
Application note Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) 2017年 11月 29日
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 2017年 10月 24日
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 2016年 10月 24日
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 2015年 8月 17日
Analog Design Journal Five steps to a great PCB layout for a step-down converter 2015年 1月 29日
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 2012年 1月 13日
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 2011年 6月 17日

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