TPS61040 28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications | TI.com

TPS61040 (ACTIVE)

28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications

 

Recommended alternative parts

  • TPS61046  -  For applications requiring smaller package or True Disconnection

Description

The TPS6104x is a high-frequency boost converter dedicated for small to medium LCD bias supply and white LED backlight supplies. The device is ideal to generate output voltages up to 28 V from a dual-cell NiMH/NiCd or a single-cell Li-Ion battery. The part can also be used to generate standard 3.3-V or 5-V to 12-V power conversions.

The TPS6104x operates with a switching frequency up to 1 MHz. This frequency allows the use of small external components using ceramic as well as tantalum output capacitors. Together with the thin WSON package, the TPS6104x gives a very small overall solution size. The TPS61040 device has an internal 400-mA switch current limit, while the TPS61041 device has a 250-mA switch current limit, offering lower output voltage ripple and allows the use of a smaller form factor inductor for lower power applications. The low quiescent current (typically 28 µA) together with an optimized control scheme, allows device operation at very high efficiencies over the entire load current range.

Features

  • 1.8-V to 6-V Input Voltage Range
  • Adjustable Output Voltage Range up to 28 V
  • 400-mA (TPS61040) and 250-mA (TPS61041) Internal Switch Current
  • Up to 1-MHz Switching Frequency
  • 28-µA Typical No-Load Quiescent Current
  • 1-µA Typical Shutdown Current
  • Internal Soft Start
  • Available in SOT23-5, TSOT23-5, and 2-mm × 2-mm × 0.8-mm WSON Packages

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Parametrics Compare all products in Boost converters (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)
Type
Rating
Package Group
TPS61040 LM2621 LM2623 LM2731 LM27313 LM2733 LM2735 LM2735-Q1 TLV61046A TPS55340 TPS61041 TPS61045 TPS61046 TPS61087 TPS61096A TPS61170
1.8     1.2     0.8     2.7     2.7     2.7     2.7     2.7     1.8     2.9     1.8     1.8     1.8     2.5     1.8     3    
6     14     14     14     14     14     5.5     5.5     5.5     32     6     6     5.5     6     5.5     18    
1.8     1.24     1.24     1.23     4     3     3     3     3.3     3     1.8     1.8     4.5     3     4.5     3    
28     14     14     22     28     40     24     24     28     38     28     28     28     18.5     28     38    
0.4     2.85     2.85     1.5     1.25     1.5     2.25     2.25     0.9     6.6     0.25     0.3     0.9     4     0.5     1.2    
1     1     1     1     1     1     1     1     1     1     1     1     1     1     1     1    
50     2000     300     600     1150     400     520     520     850     100     50     50     850     900     200     1000    
1000     2000     2000     1600     1900     1850     1600     1600     1250     1200     1000     1000     1250     1500     3000     1200    
0.028     0.08     0.08     2     2.1     1.1