Adjustable, 600-mA Switch, 90% Efficient PFM/PWM Boost Converter in ThinSOT-23 - TPS61070

TPS61070 (ACTIVE)

Adjustable, 600-mA Switch, 90% Efficient PFM/PWM Boost Converter in ThinSOT-23

 

Description

The TPS6107x 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 75 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 200 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 TPS61070 and TPS61073 enter the power-save mode to maintain a high efficiency over a wide load current range. The power-save mode is disabled in the TPS61071 and TPS61072, forcing the converters to operate at a fixed switching frequency. The maximum peak current in the boost switch is typically limited to a value of 600 mA.

The TPS6107x output voltage is programmed by an external resistor divider. The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. The device is packaged in a 6-pin thin SOT23 package (DDC).

For all available packages, see the orderable addendum at the end of the datasheet.

Features

  • 90% Efficient Synchronous Boost Converter
    • 75-mA Output Current at 3.3 V From 0.9-V
      Input
    • 150-mA Output Current at 3.3 V From 1.8-V
      Input
  • Device Quiescent Current: 19 µA (Typ)
  • Input Voltage Range: 0.9 V to 5.5 V
  • Adjustable Output Voltage Up to 5.5 V
  • Power-Save Mode Version Available for
    Improved Efficiency at Low Output Power
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Small 6-Pin Thin SOT23 Package

View more

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)
Features
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Package Group
TPS61070 TPS61071 TPS61072 TPS61073
0.9    0.9    0.9    0.9   
5.5    5.5    5.5    5.5   
1.8    1.8    1.8    1.8   
5.5    5.5    5.5    5.5   
0.7    0.7    0.7    0.7   
1    1    1    1   
960    960    480    960   
1440    1440    720    1440   
0.019    0.019    0.019    0.019   
Synchronous Rectification    Synchronous Rectification    Synchronous Rectification    Synchronous Rectification   
100    100    100    100   
-40 to 85    -40 to 85    -40 to 85    -40 to 85   
Catalog    Catalog    Catalog    Catalog   
SOT-23-THIN    SOT-23-THIN    SOT-23-THIN    SOT-23-THIN   

Featured tools and software

New! Interactive Design
Click to instantly view a schematic, charts, Bill of Materials, and Operating Values.

WEBENCH® Designer TPS61070

  Min   Max Range
Vin  V 0.9 to 5.5V
Vout  V 1.8 to 5.5V
Iout  A ≤ 0.5A
Ambient Temp  °C -40 to 125°C


Footprint BOM Cost Efficiency


Preview design