3–17V 1A Step-Down Converter in 3x3 QFN package - TPS62151

TPS62151 (ACTIVE)

3–17V 1A Step-Down Converter in 3x3 QFN package

 

Description

The TPS6215x family is an easy-to-use synchronous step down dc-dc converter optimized for applications with high power density. A high switching frequency of typically 2.5 MHz allows the use of small inductors and provides fast transient response as well as high output-voltage accuracy by the use of DCS-Control topology.

With their wide operating input-voltage range of 3 V to 17 V, the devices are ideally suited for systems powered from either Li-Ion or other batteries as well as from 12-V intermediate power rails. The devices support up to 1-A continuous output current at output voltages between 0.9 V and 6 V (in 100% duty-cycle mode). The soft-start pin controls the output-voltage start-up ramp, which allows operation as either a standalone power supply or in tracking configurations. Power sequencing is also possible by configuring the enable (EN) and open-drain power-good (PG) pins.

In power-save mode, the devices draw 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 turns off and current consumption is less than 2 µA.

The device, available in adjustable- and fixed-output-voltage versions, comes in a 16-pin VQFN package measuring 3 × 3 mm (RGT).

Features

  • DCS-Control™ Topology
  • Input Voltage Range: 3 V to 17 V
  • Up to 1-A Output Current
  • Adjustable Output Voltage From 0.9 V to 6 V
  • Pin-Selectable Output Voltage (nominal, + 5%)
  • Programmable Soft Start and Tracking
  • Seamless Power-Save Mode Transition
  • Quiescent Current of 17 µA (typ.)
  • Selectable Operating Frequency
  • Power-Good Output
  • 100% Duty-Cycle Mode
  • Short-Circuit Protection
  • Overtemperature Protection
  • Pin to Pin Compatible with TPS62130 and TPS62140
  • Available in a 3-mm × 3-mm, VQFN-16 Package

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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
TPS62151 TPS62131 TPS62141 TPS62161 TPS62171
3    3    3    3    3   
17    17    17    17    17   
1.8    1.8    1.8    1.8    1.8   
1.8    1.8    1.8    1.8    1.8   
1    3    2    1    0.5   
1    1    1    1    1   
1250    1250    1250    2250    2250   
2500    2500    2500    2250    2250   
0.017    0.017    0.017    0.017    0.017   
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   
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   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
Catalog    Catalog    Catalog    Catalog    Catalog   
VQFN    VQFN    VQFN    WSON    WSON   
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WEBENCH® Designer TPS62151

  Min   Max Range
Vin  V 3.0 to 17.0V
Vout  V 1.8 to 1.8V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 125°C


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