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0.9Vin, 3.3Vout Boost Converter with Bypass Switch - 5nA Shutdown Current, SOT-23

TPS61097-33 is not recommended for new designs
Although this product continues to be in production to support previous designs, we don't recommend it for new designs. Consider one of these alternates:
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Drop-in replacement with upgraded functionality to the compared device
TPS61097A-33 ACTIVE 0.9Vin, 3.3Vout Boost Converter with Bypass Switch - 5nA Shutdown Current This part offers improved robustness of startup circuitry at low VIN voltages and reduced input current variance during shutdown.

Product details

Topology Boost Vin (min) (V) 0.9 Vin (max) (V) 5.5 Vout (min) (V) 3.3 Vout (max) (V) 3.3 Switch current limit (typ) (A) 0.35 Type Converter Regulated outputs (#) 1 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 2000 Iq (typ) (mA) 0.005 Features Enable Duty cycle (max) (%) 100 Operating temperature range (°C) -40 to 85 Rating Catalog
Topology Boost Vin (min) (V) 0.9 Vin (max) (V) 5.5 Vout (min) (V) 3.3 Vout (max) (V) 3.3 Switch current limit (typ) (A) 0.35 Type Converter Regulated outputs (#) 1 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 2000 Iq (typ) (mA) 0.005 Features Enable Duty cycle (max) (%) 100 Operating temperature range (°C) -40 to 85 Rating Catalog
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • Up to 95% Efficiency at Typical Operating Conditions
  • Connection from Battery to Load via Bypass Switch in Shutdown Mode
  • Typical Shutdown Current Less Than 5 nA
  • Typical Quiescent Current Less Than 5 µA
  • Operating Input Voltage Range
    From 0.9 V to 5.5 V
  • Power-Save Mode for Improved Efficiency at Low Output Power
  • Overtemperature Protection
  • Small 2.8-mm × 2.9-mm 5-Pin SOT-23 Package (6-Pin for Adjustable)
  • APPLICATIONS
    • MSP430 Applications
    • All Single-Cell, Two-Cell, and Three-Cell Alkaline, NiCd, NiMH,
      or Single-Cell Li-Battery Powered Products
    • Personal Medical Products
    • Fuel Cell and Solar Cell Powered Products
    • PDAs
    • Mobile Applications
    • White LEDs

  • Up to 95% Efficiency at Typical Operating Conditions
  • Connection from Battery to Load via Bypass Switch in Shutdown Mode
  • Typical Shutdown Current Less Than 5 nA
  • Typical Quiescent Current Less Than 5 µA
  • Operating Input Voltage Range
    From 0.9 V to 5.5 V
  • Power-Save Mode for Improved Efficiency at Low Output Power
  • Overtemperature Protection
  • Small 2.8-mm × 2.9-mm 5-Pin SOT-23 Package (6-Pin for Adjustable)
  • APPLICATIONS
    • MSP430 Applications
    • All Single-Cell, Two-Cell, and Three-Cell Alkaline, NiCd, NiMH,
      or Single-Cell Li-Battery Powered Products
    • Personal Medical Products
    • Fuel Cell and Solar Cell Powered Products
    • PDAs
    • Mobile Applications
    • White LEDs

The TPS61097 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. They can also be used in fuel cell or solar cell powered devices where the capability of handling low input voltages is essential. Possible output currents depend on the input-to-output voltage ratio. The devices provides output currents up to 100 mA at a 3.3-V output while using a single-cell Li-Ion or Li-Polymer battery. The boost converter is based on a current-mode controller using synchronous rectification to obtain maximum efficiency. The maximum average input current is limited to a value of 350 mA. The output voltage can be programmed by an external resistor divider, or it is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the battery is connected to the load to enable battery backup of critical functions on the load. The fixed output device is packaged in a 5-pin SOT-23 package (DBV) measuring 2.8 mm × 2.9 mm.

The TPS61097 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. They can also be used in fuel cell or solar cell powered devices where the capability of handling low input voltages is essential. Possible output currents depend on the input-to-output voltage ratio. The devices provides output currents up to 100 mA at a 3.3-V output while using a single-cell Li-Ion or Li-Polymer battery. The boost converter is based on a current-mode controller using synchronous rectification to obtain maximum efficiency. The maximum average input current is limited to a value of 350 mA. The output voltage can be programmed by an external resistor divider, or it is fixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown, the battery is connected to the load to enable battery backup of critical functions on the load. The fixed output device is packaged in a 5-pin SOT-23 package (DBV) measuring 2.8 mm × 2.9 mm.

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Type Title Date
* Data sheet Low Input Voltage Synchronous Boost Converter With Low-Quiescent Current datasheet (Rev. C) 06 Jan 2012
Application note 스트컨버터의 전력계 기본 계산 (Rev. D) PDF | HTML 21 Nov 2022
Application note Basic Calculation of a Boost Converter's Power Stage (Rev. D) PDF | HTML 28 Oct 2022
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011

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