Product details

Vin (Min) (V) 0.7 Vin (Max) (V) 5.5 Vout (Min) (V) 1.8 Vout (Max) (V) 5.5 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 Rating Catalog
Vin (Min) (V) 0.7 Vin (Max) (V) 5.5 Vout (Min) (V) 1.8 Vout (Max) (V) 5.5 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 Rating Catalog
SOT-23 (DBV) 6 5 mm² 2.9 x 1.6
  • 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 5.5 V
  • Small 6-pin Thin SOT-23 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 5.5 V
  • Small 6-pin Thin SOT-23 Package

The TLV61220 device 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 packaged in a 6-pin thin SOT-23 package (DBV).

The TLV61220 device 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 packaged in a 6-pin thin SOT-23 package (DBV).

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Technical documentation

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Type Title Date
* Data sheet TLV61220 Low-Input Voltage Step-Up Converter in Thin SOT-23 Package datasheet (Rev. A) PDF | HTML 29 Dec 2014
Application note 벅 컨버터의 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
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
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
Technical article When discharging a super capacitor, drain it all the way! 17 Sep 2015
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
User guide TLV61220EVM-120, Low-Input Voltage, Step-Up Converter Evaluation Module 01 Mar 2012
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

Design & development

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

Evaluation board

TLV61220EVM-120 — TLV61220EVM-120 Evaluation Module

The TLV61220EVM-120 demonstrates the Texas Instruments TLV61220 synchronous boost converter.The input voltage range of the TLV61220 is 0.7 V to 5.5 V, allowing the device to operate from one-cell to three-cell battery configurations in addition to a single-cell Li-ion battery. This user’s guide (...)

User guide: PDF
Not available on TI.com
Simulation model

TPS61220 Unencrypted PSpice Transient Model Package (Rev. A)

SLVMAK1A.ZIP (62 KB) - PSpice Model
Gerber file

TLV61220 - PWR120A Gerber Files

SLVC418.ZIP (243 KB)
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Reference designs

PMP9772 — Low Input Voltage High Current Boost Converter Reference Design with TPS61088

This reference design delivers a very low input voltage high current boost application with a combination of the TPS61088 and the TLV61220. The TLV61220 is a low-input voltage boost converter. Its minimum input voltage is 0.7V. Setting the TLV61220’s output voltage to 5.5V to supply the (...)
Test report: PDF
Schematic: PDF
Package Pins Download
SOT-23 (DBV) 6 View options

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