TPS61029-Q1 Automotive 0.9V to 5.5V Input Range, 1.8A Boost Converter |

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Automotive 0.9V to 5.5V Input Range, 1.8A Boost Converter



The TPS6102x devices provide a power supply solution for products powered by either a one-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Output currents can go as high as 200 mA while using a single-cell alkaline, and discharge it down to 0.9 V. It can also be used for generating 5 V at 500 mA from a 3.3-V rail or a Li-Ion battery. The boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. At low load currents, the converter enters the Power Save Mode to maintain a 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 peak current in the boost switch is limited to a value of 800 mA, 1500 mA or 1800 mA depending on the device version.

The TPS6102x devices keep the output voltage regulated even when the input voltage exceeds the nominal output voltage. The output voltage can be programmed by 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 completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing and, in effect, lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode. The device is packaged in a 10-pin VSON PowerPAD™ package.


  • Qualified for Automotive Applications
  • 96% Efficient Synchronous Boost Converter
  • Output Voltage Remains Regulated When Input
    Voltage Exceeds Nominal Output Voltage
  • Device Quiescent Current: 25 µA (Typ)
  • Input Voltage Range: 0.9 V to 6.5 V
  • Fixed and Adjustable Output Voltage Options
    Up to 5.5 V
  • Power Save Mode for Improved Efficiency at
    Low Output Power
  • Low Battery Comparator
  • Low EMI-Converter (Integrated Anti-ringing
  • Load Disconnect During Shutdown
  • Over-Temperature Protection
  • Small 3-mm × 3-mm QFN-10 Package


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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Switch current limit (Typ) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Type Rating Package Group
TPS61029-Q1 Order now 0.9     5.5     1.8     5.5     1.8     1     480     600     0.025     Enable
Light Load Efficiency
Load Disconnect
Power Good
Synchronous Rectification    
100     -40 to 125     Converter     Automotive     VSON | 10    
TPS61040-Q1 Samples not available 1.8     6     1.8     28     0.4     1     50     1000     0.028     Enable     88     -40 to 125     Converter     Automotive     SOT-23 | 5    
TPS61041-Q1 Samples not available 1.8     6     1.8     28     0.25     1     50     1000     0.028     Enable     88     -40 to 125     Converter     Automotive     SOT-23 | 5    
TPS61071-Q1 Order now 0.9     5.5     1.8     5.5     0.7     1     1200     1200     0.019     Synchronous Rectification     100     -40 to 105     Converter     Automotive     SOT-23-THIN | 6    
TPS61240-Q1 Order now 2.3     5.5     5     5     0.6     1     3500     3500     0.03     Enable
Light Load Efficiency
Load Disconnect    
100     -40 to 105
-40 to 85    
Converter     Automotive     WSON | 6