TPS63031 (ACTIVE)

High Efficient Single Inductor Buck-Boost Converter with 1-A Switches

Description

The TPS6303x devices provide a power supply solution for products powered by either a two-cell or three-cell alkaline, NiCd or NiMH battery, or a one-cell Li-Ion or Li-polymer battery. Output currents can go as high as 600 mA while using a single-cell Li-Ion or Li-Polymer Battery, and discharge it down to 2.5V or lower. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters Power Save mode to maintain high efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximum average current in the switches is limited to a typical value of 1000 mA. The output voltage is programmable using an external resistor divider, or is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is packaged in a 10-pin QFN PowerPAD package measuring 2.5mm × 2.5 mm (DSK).

Features

  • Up to 96% Efficiency
  • 800-mA Output Current at 3.3V in Step Down Mode (VIN = 3.6V to 5.5V)
  • Up to 500-mA Output Current at 3.3V in Boost Mode (VIN > 2.4V)
  • Automatic Transition Between Step Down and Boost Mode
  • Device Quiescent Current less than 50µA
  • Input Voltage Range: 1.8V to 5.5V
  • Fixed and Adjustable Output Voltage Options from 1.2V to 5.5V
  • Power Save Mode for Improved Efficiency at Low Output Power
  • Forced Fixed Frequency Operation and Synchronization Possible
  • Load Disconnect During Shutdown
  • Over-Temperature Protection
  • Available in Small 2.5mm × 2.5mm, QFN-10 Package

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Parametrics Compare all products in Buck/Boost Converter

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Topology
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Control Mode
Soft Start
Regulated Outputs (#)
Special Features
Rating
Operating Temperature Range (C)
Market Segment
Pin/Package
Approx. Price (US$)
TPS63031 TPS63000 TPS63001 TPS63002 TPS63010 TPS63011 TPS63012 TPS63020 TPS63021 TPS63030 TPS63036 TPS63060 TPS63061
1.8     1.8     1.8     1.8     2     2     2     1.8     1.8     1.8     1.8     2.5     2.5    
5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     5.5     12     12    
3.3     1.2     3.3     5     1.2     2.8     2.9     1.2     3.3     1.2     1.2     2.5     5    
3.3     5.5     3.3     5     5.5     3.3     3.4     5.5     3.3     5.5     5.5     8     5    
Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost     Buck-Boost    
2200     1250     1250     1250     2200     2200     2200     2200     2200     2200     2200     2200     2200    
2600     1500     1500     1500     2400     2400     2400     2600     2600     2600     2600     2600     2600    
0.025     0.04     0.04     0.04     0.04     0.04     0.04     0.05     0.05     0.025     0.025     0.03     0.03    
Current Mode     Current Mode     Current Mode     Current Mode       Current Mode     Current Mode     Current Mode     Current Mode     Current Mode     Current Mode       Current Mode    
Fixed     Fixed     Fixed     Fixed     Fixed     Fixed     Fixed     Fixed     Fixed     Fixed     Fixed     Fixed     Fixed    
1     1     1     1     1     1     1     1     1     1     1     1     1    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Dynamic Voltage Scaling
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Dynamic Voltage Scaling
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Dynamic Voltage Scaling
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Dynamic Voltage Scaling
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Dynamic Voltage Scaling
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Dynamic Voltage Scaling
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good    
Enable
Frequency Synchronization
Light Load Efficiency
Load Disconnect
Power Good    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
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0.95 | 1ku     1.25 | 1ku     1.25 | 1ku     1.25 | 1ku     1.35 | 1ku     1.35 | 1ku     1.35 | 1ku     1.90 | 1ku     1.90 | 1ku     0.95 | 1ku     0.95 | 1ku     1.50 | 1ku     1.50 | 1ku    

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