TPS62701

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2MHz 650mA Step-Down Converter for RF Power Amplifiers with Built in Clock Dittering Circuit and Tin

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Product details

Parameters

Vin (Min) (V) 2.7 Vin (Max) (V) 5.5 Vout (Min) (V) 1.3 Vout (Max) (V) 3.09 Iout (Max) (A) 0.65 Iq (Typ) (mA) 1 Switching frequency (Min) (kHz) 1700 Switching frequency (Max) (kHz) 2300 Features Enable, Light Load Efficiency, Synchronous Rectification, Adaptive/Dynamic Voltage Scaling Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

DSBGA (YZF) 8 3 mm² 1.642 x 1.502 open-in-new Find other Buck converters (integrated switch)

Features

  • 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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Description

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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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet 2 MHz 650 mA Step Down Converter for RF Power Amplifiers in Tiny 8-pin WCSP Pkg datasheet (Rev. B) Jun. 23, 2008
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application notes Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018
Application notes Achieving a clean startup by using a DC/DC converter with a precise enable-pin t Oct. 24, 2017
Application notes Testing tips for applying external power to supply outputs without an input volt Oct. 24, 2016
Application notes Basic Calculation of a Buck Converter's Power Stage (Rev. B) Aug. 17, 2015
Application notes Five steps to a great PCB layout for a step-down converter Jan. 29, 2015
Application notes Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) Jan. 13, 2012
Application notes IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011

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DSBGA (YZF) 8 View options

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