TPS62700 2 MHz 650mA Step-Down Converter for RF Power Amplifiers in tiny 8-pin WCSP Package | TI.com

TPS62700 (ACTIVE)

2 MHz 650mA Step-Down Converter for RF Power Amplifiers in tiny 8-pin WCSP Package

 

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.

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

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
TPS62700 Order now 2.7     5.5     1.3     3.09     0.65     1     1700     2300     1     Enable
Light Load Efficiency
Synchronous Rectification
Adaptive/Dynamic Voltage Scaling    
Voltage Mode     100     -40 to 85     Catalog     DSBGA | 8     Converter     See datasheet (DSBGA)    
TPS62701 Samples not available 2.7     5.5     1.3     3.09     0.65     1     1700     2300     1     Enable
Light Load Efficiency
Synchronous Rectification
Adaptive/Dynamic Voltage Scaling    
Voltage Mode     100     -40 to 85     Catalog     DSBGA | 8     Converter     See datasheet (DSBGA)