Low Input Voltage, 0.7V Boost Converter with 5.5μA Quiescent Current - TPS61220


Low Input Voltage, 0.7V Boost Converter with 5.5μA Quiescent Current

Recommended alternative parts

  • TPS61098  - The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.   For applications requiring ultra-Low Iq or smaller package


The TPS6122x family devices provide a power-supply solution for products powered by either a single-cell, two-cell, or three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. Possible output currents depend on the input-to-output voltage ratio. The boost converter is based on a hysteretic controller topology using synchronous rectification to obtain maximum efficiency at minimal quiescent currents. The output voltage of the adjustable version can be programmed by an external resistor divider, or is set internally to a fixed output voltage. The converter can be switched off by a featured enable pin. While being switched off, battery drain is minimized. The device is offered in a 6-pin SC-70 package (DCK) measuring 2 mm × 2 mm to enable small circuit layout size.


  • Up to 95% Efficiency at Typical Operating
  • 5.5 µA Quiescent Current
  • Startup Into Load at 0.7 V Input Voltage
  • Operating Input Voltage from 0.7 V to 5.5 V
  • Pass-Through Function during Shutdown
  • Minimum Switching Current 200 mA
  • Protections:
    • Output Overvoltage
    • Overtemperature
    • Input Undervoltage Lockout
  • Adjustable Output Voltage from 1.8 V to 6 V
  • Fixed Output Voltage Versions
  • Small 6-pin SC-70 Package

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Parametrics Compare all products in Step-Up (Boost) Converter

Regulated Outputs (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Duty Cycle (Max) (%)
Undervoltage Lockout
Switch Current Limit (Typ) (A)
Special Features
Operating Temperature Range (C)
Preset Vout (V)
Approx. Price (US$)
TPS61220 TPS61221 TPS61222
1     1     1    
0.7     0.7     0.7    
5.5     5.5     5.5    
1.8     3.3     5    
5.5     3.3     5    
Boost     Boost     Boost    
2000     2000     2000    
0.005     0.005     0.005    
90     90     90    
Fixed     Fixed     Fixed    
0.4     0.4     0.4    
Light Load Efficiency    
Light Load Efficiency    
Light Load Efficiency    
Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85    
  3.3     5    
6SC70     6SC70     6SC70    
0.38 | 1ku     0.38 | 1ku     0.38 | 1ku    
New! Interactive Design
Click to instantly view a schematic, charts, Bill of Materials, and Operating Values.
    Min   Max   Range  
  Vin V 0.7 to 5.5V  
  Vout V 1.8 to 6.0V  
  Iout A ≤ 0.4A  
  Ambient Temp °C -40 to 85°C  
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