TPS54331 3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode | TI.com

TPS54331
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3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode

3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode - TPS54331
Datasheet
TPS54331 3-A, 28-V Input, Step Down DC-DC Converter With Eco-mode™ datasheet (Rev. F)
 

Recommended alternative parts

  • TPS54231  -  Looking for a device with less output current? Try the TPS54231.
  • TPS54332  -  Looking for a device with higher switching frequency? Try theTPS54332.

Description

The TPS54331 device is a 28-V, 3-A non-synchronous buck converter that integrates a low RDS(on) high-side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode feature is automatically activated. Furthermore, the 1-µA shutdown supply-current allows the device to be used in battery-powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input undervoltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle-by-cycle current-limit scheme, frequency foldback and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54331 device is available in an 8-pin SOIC package and 8-pin SO PowerPAD package that have been internally optimized to improve thermal performance.

Features

  • 3.5 to 28-V Input Voltage Range
  • Adjustable Output Voltage Down to 0.8 V
  • Integrated 80-mΩ High-Side MOSFET Supports up to 3-A Continuous Output Current
  • High Efficiency at Light Loads With a Pulse Skipping Eco-mode™
  • Fixed 570 kHz Switching Frequency
  • Typical 1-µA Shutdown Quiescent Current
  • Adjustable Slow-Start Limits Inrush Currents
  • Programmable UVLO Threshold
  • Overvoltage Transient Protection
  • Cycle-by-Cycle Current Limit, Frequency Fold Back, and Thermal Shutdown Protection
  • Available in Easy-to-Use SOIC8 Package or Thermally Enhanced SOIC8 PowerPAD™ Package
  • Create a Custom Design with WEBENCH Tools

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WEBENCH® Designer TPS54331

  Min   Max Range
Vin –  V 3.5 to 28.0V
Vout  V 0.8 to 25V
Iout  A ≤ 3A
Ambient Temp  °C -40 to 150°C

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Parametrics

Compare all products in Buck converters (integrated switch) Email Download to Excel
Part number Order 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 Type Package size: mm2:W x L (PKG)
TPS54331 Order now 3.5     28     0.8     25     3     1     570     570     0.11     Enable
Light Load Efficiency
UVLO Adjustable
Soft Start Adjustable    		 Current Mode     90     -40 to 150     Catalog     SO PowerPAD | 8
SOIC | 8    		 Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
TPS54231 Order now 3.5     28     0.8     25     2     1     570     570     0.075     Enable
Light Load Efficiency
UVLO Adjustable
Soft Start Adjustable    		 Current Mode     90     -40 to 150     Catalog     SOIC | 8     Converter     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
TPS54232 Order now 3.5     28     0.8     25     2     1     1000     1000     0.085     Enable
Light Load Efficiency
UVLO Adjustable
Soft Start Adjustable    		 Current Mode     90     -40 to 150     Catalog     SOIC | 8     Converter     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
TPS54233 Order now 3.5     28     0.8     25     2     1     300     300     0.075     Enable
Light Load Efficiency
UVLO Adjustable
Soft Start Adjustable    		 Current Mode     90     -40 to 150     Catalog     SOIC | 8     Converter     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
TPS54332 Order now 3.5     28     0.8     25     3.5     1     1000     1000     0.082     Enable
Light Load Efficiency
UVLO Adjustable
Soft Start Adjustable    		 Current Mode     90     -40 to 150     Catalog     SO PowerPAD | 8