Ultra-low-power DCDC converter in WCSP - TPS62743

TPS62743 (ACTIVE)

Ultra-low-power DCDC converter in WCSP

 

Recommended alternative parts

  • TPS62740  -  Looking for this device in QFN package? Try the TPS62740
  • TPS82740A  -  Looking for this device in ultra-small package? Try the module TPS82740A
  • TPS62746  -  Looking for this device with integrated Vin switch? Try the TPS62746
  • TPS62748  -  Looking for this device with integrated load-switch? Try the TPS62748

Description

The TPS62743 is a high efficiency step down converter with ultra low quiescent current of typical 360 nA. The device is optimized to operate with a 2.2-µH inductor and 10µF output capacitor. The device uses DCS-Control™ and operates with a typical switching frequency of 1.2 MHz. In Power Save Mode the device extends the light load efficiency down to a load current range of 10-µA and below. TPS62743 provides an output current of 300 mA. Once started the device operates down to an input voltage range of 2.0 V. This allows to operate the device directly from a single Li-MnO2 coin cell.

The TPS62743 provides 8 programmable output voltages between 1.2V and 3.3V selectable by three selection pins. The TPS62743 is optimized to provide a low output voltage ripple and low noise using a small output capacitor. Once the input voltage comes close to the output voltage the device enters the No Ripple 100% mode to prevent an increase of output ripple voltage. In this operation mode the device stops switching and turns the high side MOSFET switch on.

Features

  • Input Voltage Range VIN from 2.15 V to 5.5 V
  • Input Voltage Range Down to 2.0 V Once Started
  • Output Current
    • TPS62743 300 mA
    • TPS627431 400mA
  • 360 nA Operational Quiescent Current
  • Up to 90% Efficiency at 10-µA Output Current
  • Power Save Mode Operation
  • Selectable Output Voltages
    • 8 voltage options between 1.2 V to 3.3 V
  • Output Voltage Discharge
  • Low Output Voltage Ripple
  • Automatic Transition to No Ripple 100% Mode
  • RF Friendly DCS-Control™
  • Total Solution Size <10mm2
  • Small 1.6 mm × 0.9 mm, 8 Ball WCSP 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
TPS62743 TPS627431 TPS62730 TPS62732 TPS62733 TPS62740 TPS62742 TPS62745 TPS62746 TPS62748
2    2.15    1.9    1.9    1.9    2.2    3    3.3    2    2.15   
5.5    5.5    3.9    3.9    3.9    5.5    5.5    10    5.5    5.5   
1.2    1.3    2.1    1.9    2.3    1.8    1.8    1.8    1.2    1.2   
3.3    3.1    2.1    1.9    2.3    3.3    3.3    3.3    3.3    1.8   
0.3    0.4    0.1    0.1    0.1    0.3    0.4    0.3    0.3    0.3   
1    1    1    1    1    1    1    1    1    1   
1200      3000    3000    3000    2000    2000    2500    1200    1200   
1200      3000    3000    3000    2000    2000    2500    1200    1200   
0.0003    0.0003    0.025    0.025    0.025    0.0003    0.0003    0.0004    0.0003    0.00036   
Dynamic Voltage Scaling
Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification   
Light Load Efficiency    Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Enable
Light Load Efficiency
Synchronous Rectification   
Dynamic Voltage Scaling
Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification   
Dynamic Voltage Scaling
Light Load Efficiency
Output Discharge
Power Good
Synchronous Rectification   
Dynamic Voltage Scaling
Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification   
Dynamic Voltage Scaling
Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification   
Load Disconnect   
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 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 125    -40 to 85    -40 to 125   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
DSBGA    DSBGA    SON    SON    SON    WSON    WSON    WSON    DSBGA    DSBGA   
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WEBENCH® Designer TPS62743

  Min   Max Range
Vin  V 2.15 to 5.5V
Vout  V 1.2 to 3.3V
Iout  A ≤ 0.3A
Ambient Temp  °C -40 to 125°C


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