TPS61045

ACTIVE

28-V, 85% Efficient Boost Converter in QFN-8, Digitally Adjustable

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 1.8 Vin (max) (V) 6 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Enable, Load Disconnect, Nonsynchronous Vout (min) (V) 1.8 Vout (max) (V) 28 Iq (typ) (A) 0.00004
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 1.8 Vin (max) (V) 6 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 1000 Features Enable, Load Disconnect, Nonsynchronous Vout (min) (V) 1.8 Vout (max) (V) 28 Iq (typ) (A) 0.00004
VSON (DRB) 8 9 mm² 3 x 3
  • Input Voltage Range from 1.8 to 6 V
  • Output Voltage of up to 28 V Possible
  • Up to 85% Efficiency
  • Digitally Adjustable Output Voltage Control
  • Disconnects Output From Input During Shutdown
  • Switching Frequency up to 1 MHz
  • No Load Quiescent Current 40 µA Typical
  • Thermal Shutdown Mode
  • Shutdown Current 0.1 µA Typical
  • Available in Small 3-mm × 3-mm VSON Package
  • Input Voltage Range from 1.8 to 6 V
  • Output Voltage of up to 28 V Possible
  • Up to 85% Efficiency
  • Digitally Adjustable Output Voltage Control
  • Disconnects Output From Input During Shutdown
  • Switching Frequency up to 1 MHz
  • No Load Quiescent Current 40 µA Typical
  • Thermal Shutdown Mode
  • Shutdown Current 0.1 µA Typical
  • Available in Small 3-mm × 3-mm VSON Package

The TPS61045 device is a high-frequency boost converter with digitally-programmable output voltage and true shutdown. During shutdown, the output is disconnected from the input by opening the internal input switch. This allows a controlled power-up and power-down sequencing of the display. The output voltage can be increased or decreased in digital steps by applying a logic signal to the CTRL pin. The output voltage range, as well as the output voltage step size, can be programmed with the feedback divider network. With a high switching frequency of up to 1 MHz, the TPS61045 device allows the use of small external components, and together, with the small 8-pin VSON package, a minimum system solution size is achieved.

The TPS61045 device is a high-frequency boost converter with digitally-programmable output voltage and true shutdown. During shutdown, the output is disconnected from the input by opening the internal input switch. This allows a controlled power-up and power-down sequencing of the display. The output voltage can be increased or decreased in digital steps by applying a logic signal to the CTRL pin. The output voltage range, as well as the output voltage step size, can be programmed with the feedback divider network. With a high switching frequency of up to 1 MHz, the TPS61045 device allows the use of small external components, and together, with the small 8-pin VSON package, a minimum system solution size is achieved.

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Technical documentation

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Type Title Date
* Data sheet TPS61045 Digitally Adjustable Boost Converter datasheet (Rev. C) PDF | HTML 05 Dec 2014
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 06 Dec 2023
Application note Using External Bias to Broaden Input Voltage Range of Boost Converters PDF | HTML 08 Nov 2021
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) 29 Nov 2017
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 15 Jun 2017
Application note Feedforward Capacitor Makes Boost Converter Fast and Stable 02 Nov 2016
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 26 Apr 2012
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011
Application note Minimizing Ringing at the Switch Node of a Boost Converter 15 Sep 2006
EVM User's guide TPS61045EVM-231: Adjustable LCD Boost Converter EVM 22 Jan 2003
Application note High Voltage Power Supply Using the TPS61040 09 Jul 2002

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