TPS54339E 4.5V to 23V Input, 3A Synchronous Step-Down Converter with D-CAP2 Mode and Light Load Efficiency | TI.com

TPS54339E
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4.5V to 23V Input, 3A Synchronous Step-Down Converter with D-CAP2 Mode and Light Load Efficiency

 

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Description

The TPS54339E is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54339E enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54339E uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54339E to maintain high efficiency during lighter load conditions. The TPS54339E also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54339E is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C.

Features

  • D-CAP2 Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 23 V
  • Output Voltage Range: 0.76 V to 7.0 V
  • Highly Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    – 140 mΩ (High Side) and 70 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 600-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Auto-Skip Eco-mode for High Efficiency at Light Load

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WEBENCH® Designer TPS54339E

  Min   Max Range
Vin  V 4.5 to 23.0V
Vout  V 0.765 to 7V
Iout  A ≤ 3A
Ambient Temp  °C -40 to 85°C

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)
TPS54339E Order now 4.5     23     0.76     7     3     1     600     600     0.6     Enable
Light Load Efficiency
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     90     -40 to 85     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS54229 Order now 4.5     18     0.76     7     2     1     650     650     0.8     Enable
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     90     -40 to 85     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS54229E Order now 4.5     18     0.76     7     2     1     650     650     0.85     Enable
Light Load Efficiency
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     90     -40 to 85     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS54239 Order now 4.5     23     0.76     7     2     1     600     600     0.6     Enable
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     90     -40 to 85     Catalog     SO PowerPAD | 8     Converter     8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)    
TPS54239E Order now 4.5     23     0.76     7     2     1     600     600     0.6     Enable
Light Load Efficiency
Synchronous Rectification
Soft Start Adjustable    
D-CAP2     90     -40 to 85     Catalog