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

TPS61220 (ACTIVE)

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

Recommended alternative parts

  • TPS61098  -  For applications requiring ultra-Low Iq or smaller package

Description

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.

Features

  • Up to 95% Efficiency at Typical Operating
    Conditions
  • 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 Boost Converter (Integrated Switch)

 
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)
Performance Features
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
Approx. Price (US$)
TPS61220 TPS61221 TPS61222
0.7     0.7     0.7    
5.5     5.5     5.5    
1.8     3.3     5    
5.5     3.3     5    
0.4     0.4     0.4    
1     1     1    
500     500     500    
2000     2000     2000    
0.005     0.005     0.005    
Enable
Light Load Efficiency Mode    
Enable
Light Load Efficiency Mode    
Enable
Light Load Efficiency Mode    
90     90     90    
-40 to 85     -40 to 85     -40 to 85    
Catalog     Catalog     Catalog    
SC70     SC70     SC70    
0.38 | 1ku     0.38 | 1ku     0.38 | 1ku    
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WEBENCH® Designer TPS61220

  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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