TPS61100

ACTIVE

Dual output converter (boost DC/DC + LDO) for single/dual cell applications

A newer version of this product is available

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Same functionality with different pin-out to the compared device
TPS61023 ACTIVE 3.7-A boost converter with 0.5-V ultra-low input voltage For applications requiring single output, smaller package or higher output current.
TPS61098 ACTIVE Low input voltage, 4.3-V output voltage, synchronous boost converter with integrated LDO single output and with integrated LDO
TPS610981 ACTIVE Low input voltage, 3.3-V output voltage, synchronous boost converter with integrated LDO single output and with integrated LDO
TPS610982 ACTIVE Low input voltage, 4.3-V output voltage, synchronous boost converter with integrated LDO single output and with integrated LDO

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.8 Vin (max) (V) 3.3 Switching frequency (min) (kHz) 320 Switching frequency (max) (kHz) 800 Features Enable, Light Load Efficiency, Load Disconnect, Output discharge, Power good, Synchronous Rectification Vout (min) (V) 1.5 Vout (max) (V) 5.5 Iq (typ) (µA) 65 Duty cycle (max) (%) 100 Switch current limit (typ) (A) 1.5
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.8 Vin (max) (V) 3.3 Switching frequency (min) (kHz) 320 Switching frequency (max) (kHz) 800 Features Enable, Light Load Efficiency, Load Disconnect, Output discharge, Power good, Synchronous Rectification Vout (min) (V) 1.5 Vout (max) (V) 5.5 Iq (typ) (µA) 65 Duty cycle (max) (%) 100 Switch current limit (typ) (A) 1.5
TSSOP (PW) 20 41.6 mm² 6.5 x 6.4 VQFN (RGE) 24 16 mm² 4 x 4
  • Synchronous 95% Efficient Boost Converter
  • Integrated 120 mA LDO for Second Output Voltage
  • TSSOP-20 and QFN-24 Package
  • 65 µA (Typ) Total Device Quiescent Current
  • 0.8 V to 3.3 V Input Voltage Range
  • Adjustable Output Voltage up to 5.5 V and Fixed Output Voltage Options
  • Power-Save Mode for Improved Efficiency at Low Output Power
  • Battery Supervision
  • Power Good Output
  • Pushbutton Function for Start-Up
  • Low EMI-Converter (Integrated Antiringing Switch)
  • Load Disconnect During Shutdown
  • Auto Discharge Allows the Device to Discharge Output Capacitor During Shutdown
  • Overtemperature Protection
  • EVM Available (TPS6110XEVM-216)
  • APPLICATIONS
    • All Single or Dual Cell Battery Operated Products Which Use Two System Voltages Like DSP C5X Applications
    • Internet Audio Player, PDAs, Digital Still Cameras and Other Portable Equipment

  • Synchronous 95% Efficient Boost Converter
  • Integrated 120 mA LDO for Second Output Voltage
  • TSSOP-20 and QFN-24 Package
  • 65 µA (Typ) Total Device Quiescent Current
  • 0.8 V to 3.3 V Input Voltage Range
  • Adjustable Output Voltage up to 5.5 V and Fixed Output Voltage Options
  • Power-Save Mode for Improved Efficiency at Low Output Power
  • Battery Supervision
  • Power Good Output
  • Pushbutton Function for Start-Up
  • Low EMI-Converter (Integrated Antiringing Switch)
  • Load Disconnect During Shutdown
  • Auto Discharge Allows the Device to Discharge Output Capacitor During Shutdown
  • Overtemperature Protection
  • EVM Available (TPS6110XEVM-216)
  • APPLICATIONS
    • All Single or Dual Cell Battery Operated Products Which Use Two System Voltages Like DSP C5X Applications
    • Internet Audio Player, PDAs, Digital Still Cameras and Other Portable Equipment

The TPS6110x devices provide a complete power supply solution for products powered by either one or two Alkaline, NiCd, or NiMH battery cells. The converter generates two stable output voltages that are either adjusted by an external resistor divider or fixed internally on the chip. It stays in operation with supply voltages down to 0.8 V. The implemented boost 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 boost switch is limited to a value of 1800 mA.

The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. An auto discharge function allows discharging the output capacitors during shutdown mode. This is especially useful in microcontroller applications where the microcontroller or microprocessor should not remain active due to the stored voltage on the output capacitors. Programming the ADEN-pin disables this feature. 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 boost stage provides additional control of cascaded power supply components.

The built-in LDO can be used for a second output voltage derived either from the boost 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 i.e., using the power good of the boost stage.

The device is packaged in a 20-pin TSSOP (20 PW) package or in a 24-pin QFN (24 RGE) package.

The TPS6110x devices provide a complete power supply solution for products powered by either one or two Alkaline, NiCd, or NiMH battery cells. The converter generates two stable output voltages that are either adjusted by an external resistor divider or fixed internally on the chip. It stays in operation with supply voltages down to 0.8 V. The implemented boost 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 boost switch is limited to a value of 1800 mA.

The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. An auto discharge function allows discharging the output capacitors during shutdown mode. This is especially useful in microcontroller applications where the microcontroller or microprocessor should not remain active due to the stored voltage on the output capacitors. Programming the ADEN-pin disables this feature. 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 boost stage provides additional control of cascaded power supply components.

The built-in LDO can be used for a second output voltage derived either from the boost 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 i.e., using the power good of the boost stage.

The device is packaged in a 20-pin TSSOP (20 PW) package or in a 24-pin QFN (24 RGE) package.

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Technical documentation

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Type Title Date
* Data sheet TPS6110x - Dual-Output, Single-Cell Boost Converters datasheet (Rev. B) 15 Apr 2004
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 06 Dec 2023
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 LDO Noise Demystified (Rev. B) PDF | HTML 18 Aug 2020
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 LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 09 Aug 2017
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 15 Jun 2017
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
EVM User's guide TPS6110x EVM 14 Jun 2002

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Bill of materials (BOM)

TPS6110xEVM-198 Bill of Materials

SLVR174.PDF (25 KB)
Schematic

TPS6110xEVM-198 Schematic

SLVR173.PDF (40 KB)
Package Pins CAD symbols, footprints & 3D models
TSSOP (PW) 20 Ultra Librarian
VQFN (RGE) 24 Ultra Librarian

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