TPS62743 Ultra-low-power 300mA to 400mA Step-Down Buck DCDC Converter with 360nA Iq in WCSP package | TI.com

TPS62743 (ACTIVE)

Ultra-low-power 300mA to 400mA Step-Down Buck DCDC Converter with 360nA Iq in WCSP package

Ultra-low-power 300mA to 400mA Step-Down Buck DCDC Converter with 360nA Iq in WCSP package - TPS62743
 

Recommended alternative parts

  • TPS62801  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 

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
2     2.15    
5.5     5.5    
1.2     1.3    
3.3     3.1    
0.3     0.4    
1     1    
1200      
1200      
0.0003     0.0003    
Dynamic Voltage Scaling
Enable
Light Load Efficiency
Output Discharge
Synchronous Rectification    
Light Load Efficiency    
Constant on-time (COT)
DCS-Control    
 
100     100    
-40 to 85     -40 to 85    
Catalog     Catalog    
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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