Product details

Vin (Min) (V) 0.7 Vin (Max) (V) 5.5 Vout (Min) (V) 2.7 Vout (Max) (V) 5.4 Switch current limit (Typ) (A) 2 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 1000 Iq (Typ) (mA) 0.0001 Features Adjustable Current Limit, Bypass Mode, Enable, Light Load Efficiency, Synchronous Rectification, UVLO Fixed Duty cycle (Max) (%) 92 Operating temperature range (C) -40 to 125, -40 to 85 Rating Catalog
Vin (Min) (V) 0.7 Vin (Max) (V) 5.5 Vout (Min) (V) 2.7 Vout (Max) (V) 5.4 Switch current limit (Typ) (A) 2 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 1000 Iq (Typ) (mA) 0.0001 Features Adjustable Current Limit, Bypass Mode, Enable, Light Load Efficiency, Synchronous Rectification, UVLO Fixed Duty cycle (Max) (%) 92 Operating temperature range (C) -40 to 125, -40 to 85 Rating Catalog
WSON (DSS) 12 6 mm² 3 x 2
  • Wide voltage range and current range
    • 0.7-V to 5.5-V input voltage range
    • 1.8-V minimum input voltage for start-up
    • Programmable boost output voltages, 2.7-V to 5.4-V setting range
    • Programmable buck charging termination voltages, 1.7-V to 5.4-V setting range
    • Programmable buck charging output currents, 2.5-mA to 600-mA setting range
  • Ultra-low quiescent current
    • 60 nA in boost mode or buck charging mode
    • 4 nA in forced bypass mode
  • High efficiency and power capability
    • Minimum 1.4-A inductor valley current limit
    • Two 60-mΩ (LS) / 140-mΩ (HS) MOSFETs
    • 100-mΩ bypass switch resistance
    • 1-MHz switching frequency
    • Auto snooze mode operation at light load
    • Up to 92.3% efficiency at VIN = 3 V, VOUT = 3.6 V, and IOUT = 10 µA
    • Up to 96.3% efficiency at VIN = 3 V, VOUT = 3.6 V, and IOUT = 100 mA
  • Four operation modes controlled by the MODE and EN pins
  • Rich protection
    • Output short-circuit protection
    • Thermal shutdown protection
  • 2-mm × 3-mm 12-pin WSON package
  • Wide voltage range and current range
    • 0.7-V to 5.5-V input voltage range
    • 1.8-V minimum input voltage for start-up
    • Programmable boost output voltages, 2.7-V to 5.4-V setting range
    • Programmable buck charging termination voltages, 1.7-V to 5.4-V setting range
    • Programmable buck charging output currents, 2.5-mA to 600-mA setting range
  • Ultra-low quiescent current
    • 60 nA in boost mode or buck charging mode
    • 4 nA in forced bypass mode
  • High efficiency and power capability
    • Minimum 1.4-A inductor valley current limit
    • Two 60-mΩ (LS) / 140-mΩ (HS) MOSFETs
    • 100-mΩ bypass switch resistance
    • 1-MHz switching frequency
    • Auto snooze mode operation at light load
    • Up to 92.3% efficiency at VIN = 3 V, VOUT = 3.6 V, and IOUT = 10 µA
    • Up to 96.3% efficiency at VIN = 3 V, VOUT = 3.6 V, and IOUT = 100 mA
  • Four operation modes controlled by the MODE and EN pins
  • Rich protection
    • Output short-circuit protection
    • Thermal shutdown protection
  • 2-mm × 3-mm 12-pin WSON package

The TPS61094 is a synchronous bi-directional buck/boost converter with bypass switch. The device provides a power supply solution for smart meter and super capacitor backup power applications.

The TPS61094 has a wide input voltage range and output voltage up to 5.5 V. When the TPS61094 works in Buck mode and charges the supercap, the charging current and the termination voltage are programmable with two external resistors. When the TPS61094 works in Boost mode, the output voltage is programmable with an external resistor.

During automatic Buck or Boost mode (EN = 1, MODE = 1), when the input power supply is applied, the device bypasses the input voltage to the output while it is capable of charging a backup supercap. When the input power supply is disconnected or lower than the output target voltage, the TPS61094 enters Boost mode and regulates output voltage from a backup supercap. The TPS61094 consumes 60-nA quiescent current in this mode.

The TPS61094 supports True shutdown mode (EN = 0, MODE = 1) and the Forced bypass mode (EN = 0, MODE = 0). In True shutdown mode, the TPS61094 completely disconnects the load from the input supply. When supporting Forced bypass mode, the TPS61094 connects the load to the input voltage directly through a bypass switch and only consumes 4-nA current to achieve long battery life.

The TPS61094 is a synchronous bi-directional buck/boost converter with bypass switch. The device provides a power supply solution for smart meter and super capacitor backup power applications.

The TPS61094 has a wide input voltage range and output voltage up to 5.5 V. When the TPS61094 works in Buck mode and charges the supercap, the charging current and the termination voltage are programmable with two external resistors. When the TPS61094 works in Boost mode, the output voltage is programmable with an external resistor.

During automatic Buck or Boost mode (EN = 1, MODE = 1), when the input power supply is applied, the device bypasses the input voltage to the output while it is capable of charging a backup supercap. When the input power supply is disconnected or lower than the output target voltage, the TPS61094 enters Boost mode and regulates output voltage from a backup supercap. The TPS61094 consumes 60-nA quiescent current in this mode.

The TPS61094 supports True shutdown mode (EN = 0, MODE = 1) and the Forced bypass mode (EN = 0, MODE = 0). In True shutdown mode, the TPS61094 completely disconnects the load from the input supply. When supporting Forced bypass mode, the TPS61094 connects the load to the input voltage directly through a bypass switch and only consumes 4-nA current to achieve long battery life.

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Technical documentation

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Type Title Date
* Data sheet TPS61094 60-nA Quiescent Current Bi-directional Buck/Boost Converter with Bypass Mode datasheet (Rev. B) 14 Sep 2021
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
Application note A Long-Lifetime, Cost-Competitive Solution in Smart Meters Based on the TPS61094 (Rev. A) 05 Nov 2021
Technical article 3 benefits of using a low-Iq buck/boost converter to extend battery life in flow meters 02 Nov 2021
Technical article Effective ways to implement backup power from supercapacitors 02 Nov 2021
Certificate TPS61094EVM-066 EU RoHS Declaration of Conformity (DoC) (Rev. A) 07 Sep 2021
User guide TPS61094EVM-066 User's Guide 26 Jan 2021

Design & development

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Evaluation board

TPS61094EVM-066 — TPS61094 100-nA quiescent current bi-directional buck/boost converter evaluation module

The TPS61094 is a synchronous bi-directional buck/ boost converter with bypass switch between input and output. The device provides a power supply solution for E-meter and super capacitors backup power applications. The TPS61094 has wide input voltage range andoutput voltage up to 5.5 V. When the (...)
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TPS61094 PSPICE Transient Model

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