Product details

Vin (Min) (V) 0.7 Vin (Max) (V) 5.5 Vout (Min) (V) 4.8 Vout (Max) (V) 5.19 Switch current limit (Typ) (A) 0.4 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 2000 Iq (Typ) (mA) 0.005 Features Synchronous Rectification Duty cycle (Max) (%) 90 Operating temperature range (C) -55 to 125 Rating HiRel Enhanced Product
Vin (Min) (V) 0.7 Vin (Max) (V) 5.5 Vout (Min) (V) 4.8 Vout (Max) (V) 5.19 Switch current limit (Typ) (A) 0.4 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 2000 Iq (Typ) (mA) 0.005 Features Synchronous Rectification Duty cycle (Max) (%) 90 Operating temperature range (C) -55 to 125 Rating HiRel Enhanced Product
SOT-SC70 (DCK) 6 4 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
  • 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
  • Fixed Output Voltage Versions
  • Small 6-Pin SC-70 Package

The TPS61222 provides 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 TPS61222 provides 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 Low Input Voltage, 0.7V, Boost Converter With 5.5μA Quiescent Current . datasheet 25 Sep 2012
* VID TPS61222-EP VID V6212603 21 Jun 2016
* Radiation & reliability report TPS61222MDCKTEP Reliabilty Report 09 Feb 2016
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018

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.

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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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SC70 (DCK) 6 View options

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