2.95V to 6V Input, 3A Synchronous Step-Down Converter - TPS5432

TPS5432 (ACTIVE)

2.95V to 6V Input, 3A Synchronous Step-Down Converter

Recommended alternative parts

  • TPS54519  -  Looking for a device with more output current? Try the TPS54519.
  • TPS54328  -  Looking for a device with higher input voltage? Try the TPS54328.

Description

The TPS5432 is a 6V, 3A, low Iq, current mode, synchronous monolithic buck converter with integrated MOSFETs. The TPS5432 enables small designs by integrating the MOSFETs, implementing current mode control to reduce external component count, reducing inductor size by 700kHz switching frequency. SOIC-8 package with exposed thermal pad provides both thermally enhanced solution and easy to use.

The TPS5432 provides accurate regulation for a variety of loads with an accurate 3.0% voltage reference over temperature.

Efficiency is maximized through the integrated 70mΩ MOSFETs and 360μA typical supply current. Using the enable pin, shutdown supply current is reduced to 2 µA by entering a shutdown mode.

The output voltage startup ramp is controlled by the slow start pin. A ceramic capacitor at this pin can easily adjust the slow start time.

Frequency fold back and thermal shutdown protects the device during an over-current condition.

Features

  • Two 70mΩ (typical) MOSFETs for 3A Continuous Output Current
  • Current Mode Control With External Compensation
  • 700kHz Switching Frequency
  • 360µA no Load Quiescent Operating Current (no switching)
  • 0.808V Internal Voltage Reference
  • ±2.0% Reference Accuracy at 25°C
  • ±3.0% Reference Accuracy Over Temperature Range –40°C~125°C
  • Stable Operation With Ceramic Output Capacitor
  • Adjustable Slow Start
  • Cycle by Cycle Current Limit, and Frequency Fold Back Protection
  • Thermally Enhanced 8-Pin SOIC (DDA) Package

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Parametrics Compare all products in Step-Down (Buck) Converter

 
Regulated Outputs (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Topology
Switching Frequency (Max) (kHz)
Switch Current Limit (Typ) (A)
Iq (Typ) (mA)
Duty Cycle (Max) (%)
Soft Start
Compensation
Special Features
Control Mode
Vref Accuracy (Typ) (%)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TPS5432
1    
2.95    
6    
0.808    
4.5    
3    
Buck    
700    
5.7    
0.36    
98    
Adjustable    
External    
Enable
Synchronous Rectification    
Current Mode    
2    
Catalog    
-40 to 125    
8SO PowerPAD    
1.10 | 1ku    
WEBENCH® TPS5432
    Min   Max   Range  
  Vin V    2.95 – 6.00V  
  Vout V    0.81 – 5.50V  
  Iout A    ≤ 3.00A  
  Ambient Temp °C    ≤ 100°C  
Footprint BOM Cost Efficiency
 
 
 
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