Texas Instruments

TPS61033 Fully-Integrated Synchronous Boost Converter

Texas Instruments' converter features an output discharge function, power good, and PFM/PWM controls

Image of Texas Instruments' TPS61033 Synchronous Boost ConverterTexas Instruments' TPS61033 is a synchronous boost converter that provides a power supply solution for portable equipment and smart devices that are powered by various batteries and other power supplies. The converter has a valley-switch current limit of 5.5 A (typical) over the full temperature range. The TPS61033 uses adaptive constant on-time valley current-control topology to regulate the output voltage and operates at a 2.4 MHz switching frequency.

There are two optional modes at light loads by configuring the MODE pin auto PFM mode and forced-PWM to balance the efficiency and noise immunity in light loads. The converter consumes a 20 µA quiescent current from VIN at light-load conditions. During shutdown, the TPS61033 is completely disconnected from the input power and consumes a 0.1 µA current to achieve a long battery life. The converter has 5.75 V output overvoltage protection, output short-circuit protection, and thermal shutdown protection. The device offers a very small solution size with a 2.1 mm x 1.6 mm SOT583 package and minimal external components.

Features
  • Input voltage range: 1.8 V to 5.5 V
  • Output voltage range: 2.2 V to 5.5 V (when FB is connected to VIN, output voltage is fixed at 5.0 V)
  • High efficiency and power capability:
    • Two 25 mΩ (LS) / 46 mΩ (HS) MOSFETs
    • Supports up to 2.4 MHz with small L-C
    • Efficiency: up to 93.42% at VIN = 3.3 V, VOUT = 5 V, and IOUT = 1 A
    • Efficiency: up to 90.78% at VIN = 3.3 V, VOUT = 5 V, and IOUT = 2 A
  • Extends the system operating time:
    • Quiescent current: 20 μA (typ.) into the VIN pin
    • Quiescent current: 5.3 μA (typ.) into the VOUT pin
    • Shutdown current: 0.1 μA (typ.)
  • Valley-switching current limit: 5.5 A (typ.)
  • Reference voltage accuracy: ±1.5% over the temperature range: -40°C to +125°C
  • Power-good output with a window comparator
  • Pin-selectable auto-PFM or forced-PWM mode at light-loads
  • Pass-through mode when VIN > VOUT
  • Safety and robust operation features:
    • True disconnection between the input and output during shutdown
    • Output overvoltage and thermal shutdown protections
    • Output short-circuit protection
  • Package: 8-pin 2.1 mm x 1.6 mm SOT583
Applications
  • Tablets (multimedia)
  • Smart speakers
  • Mobile POS

TPS61033 Synchronous Boost Converter

ImageManufacturer Part NumberDescriptionFunctionOutput ConfigurationTopologyAvailable QuantityPriceView Details
IC REG BOOST ADJ SOT583TPS61033DRLRIC REG BOOST ADJ SOT583Step-UpPositiveBoost712 - Immediate$13.01View Details

Evaluation Board

ImageManufacturer Part NumberDescriptionMain PurposeOutputs and TypePower - OutputAvailable QuantityPriceView Details
EVAL BOARD FOR TPS61033TPS61033EVM-105EVAL BOARD FOR TPS61033DC/DC, Step Up1 Non-Isolated Output-13 - Immediate$582.83View Details
Published: 2023-06-19

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