TPS62701 - 用于具有内置时钟 Dittering 电路和锡的射频功率放大器的 2MHz 650mA 降压转换器

TPS62701是TI德州仪器公司的一款转换器（集成开关）产品，TPS62701是用于具有内置时钟 Dittering 电路和锡的射频功率放大器的 2MHz 650mA 降压转换器，本站介绍了TPS62701的封装应用图解、特点和优点、功能等，并给出了与TPS62701相关的TI元器件型号供参考。

TPS62701 - 用于具有内置时钟 Dittering 电路和锡的射频功率放大器的 2MHz 650mA 降压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

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.

产品特性

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

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