3–17V 0.5A Step-Down Converter in 2x2 QFN package - TPS62173

TPS62173 (ACTIVE)

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

 

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 Compare all products in Buck Converter (Integrated Switch)

 
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
TPS62173 TPS62133 TPS62143 TPS62153 TPS62163 TPS62170 TPS62171 TPS62172 TPS62175 TPS62177
3    3    3    3    3    3    3    3    4.7    4.7   
17    17    17    17    17    17    17    17    28    28   
5    5    5    5    5    0.9    1.8    3.3    1    3.3   
5    5    5    5    5    6    1.8    3.3    6    3.3   
0.5    3    2    1    1    0.5    0.5    0.5    0.5    0.5   
1    1    1    1    1    1    1    1    1    1   
2250    1250    1250    1250    2250    2250    2250    2250    1000    1000   
2250    2500    2500    2500    2250    2250    2250    2250    1000    1000   
0.017    0.017    0.017    0.017    0.017    0.017    0.017    0.017    0.0048    0.0048   
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining   
Enable
Light Load Efficiency
Power Good
Pre-Bias Start-Up
Synchronous Rectification
Tracking
Voltage Margining   
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining   
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining   
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining   
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining   
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification
Tracking
Voltage Margining   
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification   
Enable
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification   
Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)    Constant on-time (COT)   
100    100    100    100    100    100    100    100    100    100   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
WSON    VQFN    VQFN    VQFN    WSON    WSON    WSON    WSON    WSON    WSON   
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WEBENCH® Designer TPS62173

  Min   Max Range
Vin  V 5.75 to 17.0V
Vout  V 5 to 5V
Iout  A ≤ 0.5A
Ambient Temp  °C -40 to 125°C


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