Product details

Vin (Min) (V) 1.8 Vin (Max) (V) 5.5 Vout (Min) (V) 2.5 Vout (Max) (V) 5.5 Switch current limit (Typ) (A) 1.3 Regulated outputs (#) 2 Switching frequency (Min) (kHz) 400 Switching frequency (Max) (kHz) 600 Iq (Typ) (mA) 0.04 Features Enable, Light Load Efficiency, Load Disconnect, Power Good Duty cycle (Max) (%) 100 Operating temperature range (C) -40 to 85 Rating Catalog
Vin (Min) (V) 1.8 Vin (Max) (V) 5.5 Vout (Min) (V) 2.5 Vout (Max) (V) 5.5 Switch current limit (Typ) (A) 1.3 Regulated outputs (#) 2 Switching frequency (Min) (kHz) 400 Switching frequency (Max) (kHz) 600 Iq (Typ) (mA) 0.04 Features Enable, Light Load Efficiency, Load Disconnect, Power Good Duty cycle (Max) (%) 100 Operating temperature range (C) -40 to 85 Rating Catalog
TSSOP (PW) 16 22 mm² 4.4 x 5 VQFN (RSA) 16 16 mm² 4 x 4
  • Synchronous, Up to 90% Efficient, SEPIC
    Converter With 300-mA Output Current From
    2.5-V Input
  • Integrated 200-mA Reverse Voltage Protected
    LDO for DC-DC Output Voltage Post Regulation
    or Second Output Voltage
  • 40-µA (Typical) Quiescent Current
  • Input Voltage Range: 1.8 V to 5.5 V
  • Fixed and Adjustable Output Voltage Options up
    to 5.5 V
  • Power Save Mode for Improved Efficiency at Low-
    Output Power
  • Low Battery Comparator
  • Power Good Output
  • Low EMI-Converter (Integrated Antiringing Switch)
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Available in a Small 4-mm × 4-mm VQFN-16 or in
    a TSSOP-16 Package
  • APPLICATIONS
    • All Single Cell Li, Dual or Triple Cell Battery or
      USB Powered Products as MP-3 Player, PDAs,
      and Other Portable Equipment
    • Dual Input or Dual Output Mode
    • High Efficient Li-Ion to 3.3-V Conversion

All other trademarks are the property of their respective owners

  • Synchronous, Up to 90% Efficient, SEPIC
    Converter With 300-mA Output Current From
    2.5-V Input
  • Integrated 200-mA Reverse Voltage Protected
    LDO for DC-DC Output Voltage Post Regulation
    or Second Output Voltage
  • 40-µA (Typical) Quiescent Current
  • Input Voltage Range: 1.8 V to 5.5 V
  • Fixed and Adjustable Output Voltage Options up
    to 5.5 V
  • Power Save Mode for Improved Efficiency at Low-
    Output Power
  • Low Battery Comparator
  • Power Good Output
  • Low EMI-Converter (Integrated Antiringing Switch)
  • Load Disconnect During Shutdown
  • Overtemperature Protection
  • Available in a Small 4-mm × 4-mm VQFN-16 or in
    a TSSOP-16 Package
  • APPLICATIONS
    • All Single Cell Li, Dual or Triple Cell Battery or
      USB Powered Products as MP-3 Player, PDAs,
      and Other Portable Equipment
    • Dual Input or Dual Output Mode
    • High Efficient Li-Ion to 3.3-V Conversion

All other trademarks are the property of their respective owners

The TPS6113x devices provide a complete power supply solution for products powered by either a one-cell Li-Ion or Li-Polymer, or two- to four-cell Alkaline, NiCd, or NiMH batteries. The devices can generate two regulated output voltages. It provides a simple and efficient buck-boost solution for generating 3.3 V out of an input voltage that can be both higher and lower than the output voltage. The converter provides a maximum output current of at least 300 mA with supply voltages down to 1.8 V. The implemented SEPIC converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. The maximum peak current in the SEPIC switch is limited to a value of 1600 mA.

The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing, and in effect, lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode. A power good output at the SEPIC stage provides additional control of any connected circuits like cascaded power supply stages, or microprocessors.

The built-in LDO can be used for a second output voltage derived either from the SEPIC output or directly from the battery. The output voltage of this LDO can be programmed by an external resistor divider or is fixed internally on the chip. The LDO can be enabled separately, that is, using the power good of the SEPIC stage. The device is packaged in a 16-pin VQFN package measuring 4 mm × 4 mm (RSA) or in a 16-pin TSSOP (PW) package.

The TPS6113x devices provide a complete power supply solution for products powered by either a one-cell Li-Ion or Li-Polymer, or two- to four-cell Alkaline, NiCd, or NiMH batteries. The devices can generate two regulated output voltages. It provides a simple and efficient buck-boost solution for generating 3.3 V out of an input voltage that can be both higher and lower than the output voltage. The converter provides a maximum output current of at least 300 mA with supply voltages down to 1.8 V. The implemented SEPIC converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. The maximum peak current in the SEPIC switch is limited to a value of 1600 mA.

The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing, and in effect, lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode. A power good output at the SEPIC stage provides additional control of any connected circuits like cascaded power supply stages, or microprocessors.

The built-in LDO can be used for a second output voltage derived either from the SEPIC output or directly from the battery. The output voltage of this LDO can be programmed by an external resistor divider or is fixed internally on the chip. The LDO can be enabled separately, that is, using the power good of the SEPIC stage. The device is packaged in a 16-pin VQFN package measuring 4 mm × 4 mm (RSA) or in a 16-pin TSSOP (PW) package.

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Technical documentation

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Type Title Date
* Data sheet TPS6113x Synchronous SEPIC and Flyback Converter With 1.1-A Switch and Integrated LDO datasheet (Rev. C) PDF | HTML 29 Sep 2015
Application note Optimizing Resistor Dividers at a Comparator (Rev. B) PDF | HTML 30 Apr 2021
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Application note QFN and SON PCB Attachment (Rev. B) PDF | HTML 24 Aug 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 Basic Calculation of a Boost Converter's Power Stage (Rev. C) 08 Jan 2014
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 26 Apr 2012
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 Sep 2011
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 TPS61130 EVM User's Guide 30 Apr 2003
More literature Seminar 900 Topic 6 - High Power Factor Prereg Using SEPIC 15 Feb 2001

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QFN (RSA) 16 View options
TSSOP (PW) 16 View options

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