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AC/DC & DC/DC converters (integrated FET)

TPS61220

ACTIVE

0.7-VIN, adjustable output voltage boost converter with 5.5-μA quiescent current

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Data sheet

TPS61220

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 2000 Features Synchronous Rectification Vout (min) (V) 1.8 Vout (max) (V) 6 Iq (typ) (µA) 5 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 0.4
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 0.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 2000 Features Synchronous Rectification Vout (min) (V) 1.8 Vout (max) (V) 6 Iq (typ) (µA) 5 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 0.4
SOT-SC70 (DCK) 6 4.2 mm² 2 x 2.1
  • Up to 95% Efficiency at Typical Operating
    Conditions
  • 5.5 µA Quiescent Current
  • Startup Into Load at 0.7 V Input Voltage
  • Operating Input Voltage from 0.7 V to 5.5 V
  • Pass-Through Function during Shutdown
  • Minimum Switching Current 200 mA
  • Protections:
    • Output Overvoltage
    • Overtemperature
    • Input Undervoltage Lockout
  • Adjustable Output Voltage from 1.8 V to 6 V
  • Fixed Output Voltage Versions
  • Small 6-pin SC-70 Package
  • Up to 95% Efficiency at Typical Operating
    Conditions
  • 5.5 µA Quiescent Current
  • Startup Into Load at 0.7 V Input Voltage
  • Operating Input Voltage from 0.7 V to 5.5 V
  • Pass-Through Function during Shutdown
  • Minimum Switching Current 200 mA
  • Protections:
    • Output Overvoltage
    • Overtemperature
    • Input Undervoltage Lockout
  • Adjustable Output Voltage from 1.8 V to 6 V
  • Fixed Output Voltage Versions
  • Small 6-pin SC-70 Package

The TPS6122x family devices 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. Possible output currents depend on the input-to-output voltage ratio. The boost converter is based on a hysteretic controller topology using synchronous rectification to obtain maximum efficiency at minimal quiescent currents. The output voltage of the adjustable version can be programmed by an external resistor divider, or is set internally to a fixed output voltage. The converter can be switched off by a featured enable pin. While being switched off, battery drain is minimized. The device is offered in a 6-pin SC-70 package (DCK) measuring 2 mm × 2 mm to enable small circuit layout size.

The TPS6122x family devices 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. Possible output currents depend on the input-to-output voltage ratio. The boost converter is based on a hysteretic controller topology using synchronous rectification to obtain maximum efficiency at minimal quiescent currents. The output voltage of the adjustable version can be programmed by an external resistor divider, or is set internally to a fixed output voltage. The converter can be switched off by a featured enable pin. While being switched off, battery drain is minimized. The device is offered in a 6-pin SC-70 package (DCK) measuring 2 mm × 2 mm to enable small circuit layout size.
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Technical documentation

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Type Title Date
* Data sheet TPS6122x Low Input Voltage, 0.7V Boost Converter With 5.5μA Quiescent Current datasheet (Rev. B) PDF | HTML 11 Nov 2014
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
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 15 Jun 2017
Application note Calculating and Measuring the No Load Input Current of the Boost Converter 23 Sep 2016
Technical article Trends in building automation: connected sensors in safety and security PDF | HTML 20 Jul 2016
Application note How to Select a Proper Inductor for Low Power Boost Converter 03 Jun 2016
Application note Five Steps to a Good PCB Layout of the Boost Converter PDF | HTML 03 May 2016
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 22 Jan 2014
Application note Automated Frequency Response Analyzer 09 Oct 2013
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
EVM User's guide TPS61220EVM-319 User's Guide 02 Feb 2009
Application note Minimizing Ringing at the Switch Node of a Boost Converter 15 Sep 2006

Design & development

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Evaluation board

TPS61220EVM-319 — TPS61220EVM-319 Evaluation Module

The TPS61220EVM-319 facilitates evaluation of the TPS61220 low input voltage boost converter.

User guide: PDF
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Simulation model

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SLVMAK1A.ZIP (62 KB) - PSpice Model
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Bill of materials (BOM)

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Gerber file

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Schematic

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SNVC112.PDF (214 KB)
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Package Pins CAD symbols, footprints & 3D models
SOT-SC70 (DCK) 6 Ultra Librarian
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