TPS62172

(ACTIVE) 3–17V 0.5A Step-Down Converter in 2x2 QFN package

Diagram

Functional Diagram

Description

The TPS6217x device family are easy to use synchronous step-down DC-DC converters optimized for applications with high power density. A high switching frequency of typically 2.25 MHz allows the use of small inductors and provides fast transient response as well as high output voltage accuracy by utilization of the DCS-Control™ topology.

With its wide operating input voltage range of 3 V to 17 V, the devices are ideally suited for systems powered from either a Li-Ion or other battery as well as from 12-V intermediate power rails. It supports up to 0.5-A continuous output current at output voltages between 0.9 V and 6 V (with 100% duty cycle mode).

Power sequencing is also possible by configuring the enable and open-drain power good pins.

In power save mode, the devices show quiescent current of about 17 µA from VIN. Power save mode, entered automatically and seamlessly if the load is small, maintains high efficiency over the entire load range. In shutdown mode, the device is turned off and shutdown current consumption is less than 2 µA.

The device, available in adjustable and fixed output voltage versions, is packaged in a 2-mm × 2-mm 8-pin WSON package (DSG).

Features

  • DCS-Control™ Topology
  • Input Voltage Range from 3 V to 17 V
  • Up to 500-mA Output Current
  • Adjustable Output Voltage from 0.9 V to 6 V
  • Fixed Output Voltage Versions
  • Seamless Power Save Mode Transition
  • Typically 17-µA Quiescent Current
  • Power Good Output
  • 100% Duty Cycle Mode
  • Short Circuit Protection
  • Over Temperature Protection
  • Pin to Pin Compatible with TPS62160 and TPS62125
  • Available in a 2-mm × 2-mm 8-Pin WSON Package
  • Create a Custom Design using the TPS62170 with the WEBENCH® Power Designer

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Parametrics

Vin (Min) (V) 3    
Vin (Max) (V) 17    
Vout (Min) (V) 3.3    
Vout (Max) (V) 3.3    
Iout (Max) (A) 0.5    
Regulated Outputs (#) 1    
Switching Frequency (Min) (kHz) 2250    
Switching Frequency (Max) (kHz) 2250    
Iq (Typ) (mA) 0.017    
Features Enable^Light Load Efficiency^Output Discharge^Power Good^Synchronous Rectification^Tracking^Voltage Margining    
Control Mode Constant on-time (COT)^DCS-Control    
Duty Cycle (Max) (%) 100    
Operating Temperature Range (C) -40 to 125    
Rating Catalog    
Package Group WSON|8    
Type Converter    

Companion Products

Technical Documents

Datasheet (1)

Application notes (18)

Selection guides (1)

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