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Buck-boost, inverting & split-rail converters (integrated switch)

TPS63805

ACTIVE

2-A, high-efficient, 11-µA quiescent current buck-boost converter with tiny solution size

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Data sheet

TPS63805

ACTIVE
Data sheet Order now

Product details

Topology Buck-Boost Vin (min) (V) 1.3 Vin (max) (V) 5.5 Vout (max) (V) 5.2 Vout (min) (V) 1.8 Duty cycle (max) (%) 100 Features Enable, Light Load Efficiency, Load Disconnect, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed Switch current limit (typ) (A) 5 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 3100 Iq (typ) (mA) 0.011 Iout (max) (A) 2 Rating Catalog Operating temperature range (°C) -40 to 125 Type Converter
Topology Buck-Boost Vin (min) (V) 1.3 Vin (max) (V) 5.5 Vout (max) (V) 5.2 Vout (min) (V) 1.8 Duty cycle (max) (%) 100 Features Enable, Light Load Efficiency, Load Disconnect, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed Switch current limit (typ) (A) 5 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 3100 Iq (typ) (mA) 0.011 Iout (max) (A) 2 Rating Catalog Operating temperature range (°C) -40 to 125 Type Converter
DSBGA (YFF) 15 3.08000000000000022 mm² 1.4000000000000001 x 2.2
  • Three pin-to-pin device options: TPS63805, TPS63806, and TPS63807 with specific application focus
  • Input voltage range: 1.3 V to 5.5 V
    • Device input voltage > 1.8 V for start-up
  • Output voltage range: 1.8 V to 5.2 V (adjustable)
  • High efficiency over the entire load range
    • Power save mode and mode selection for forced PWM-mode
  • Peak current buck-boost mode architecture
    • Defined transition points between buck, buck-boost, and boost operation modes
    • Forward and reverse current operation
    • Start-up into pre-biased outputs
  • Safety and robust operation features
    • Integrated soft start
    • Overtemperature- and overvoltage-protection
    • True shutdown function with load disconnect
    • Forward and backward current limit
  • TPS63805
    • Optimized for smallest solution size of 18.5 mm2 (works with a 22-µF minimum output capacitor)
    • 2-A output current for VI ≥ 2.3 V, VO = 3.3 V
    • 11-µA operating quiescent current
  • TPS63806
    • Optimized for best load step response (180-mV load-step response at a 2 A current step)
    • Up to 2.5-A transient output current
    • 13-µA operating quiescent current
  • TPS63807
    • Optimized for smallest solution size of 18.5 mm2 (works with a 22-µF minimum output capacitor)
    • 2-A output current for VI ≥ 2.3 V, VO = 3.3 V
    • 11-µA operating quiescent current
    • Output discharge feature when EN is low
    • 480-µs Tramp for small inrush current during start-up
  • Three pin-to-pin device options: TPS63805, TPS63806, and TPS63807 with specific application focus
  • Input voltage range: 1.3 V to 5.5 V
    • Device input voltage > 1.8 V for start-up
  • Output voltage range: 1.8 V to 5.2 V (adjustable)
  • High efficiency over the entire load range
    • Power save mode and mode selection for forced PWM-mode
  • Peak current buck-boost mode architecture
    • Defined transition points between buck, buck-boost, and boost operation modes
    • Forward and reverse current operation
    • Start-up into pre-biased outputs
  • Safety and robust operation features
    • Integrated soft start
    • Overtemperature- and overvoltage-protection
    • True shutdown function with load disconnect
    • Forward and backward current limit
  • TPS63805
    • Optimized for smallest solution size of 18.5 mm2 (works with a 22-µF minimum output capacitor)
    • 2-A output current for VI ≥ 2.3 V, VO = 3.3 V
    • 11-µA operating quiescent current
  • TPS63806
    • Optimized for best load step response (180-mV load-step response at a 2 A current step)
    • Up to 2.5-A transient output current
    • 13-µA operating quiescent current
  • TPS63807
    • Optimized for smallest solution size of 18.5 mm2 (works with a 22-µF minimum output capacitor)
    • 2-A output current for VI ≥ 2.3 V, VO = 3.3 V
    • 11-µA operating quiescent current
    • Output discharge feature when EN is low
    • 480-µs Tramp for small inrush current during start-up

The TPS63805, TPS63806, and TPS63807 are high efficiency, high output current buck-boost converters. Depending on the input voltage, they automatically operate in boost, buck, or in a novel 4-cycle buck-boost mode when the input voltage is approximately equal to the output voltage.

The TPS63805, TPS63806, and TPS63807 are high efficiency, high output current buck-boost converters. Depending on the input voltage, they automatically operate in boost, buck, or in a novel 4-cycle buck-boost mode when the input voltage is approximately equal to the output voltage.

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Technical documentation

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Type Title Date
* Data sheet TPS6380x High-Efficiency, Low IQ Buck-Boost Converter with Small Solution Size datasheet (Rev. E) PDF | HTML 26 Aug 2021
Application note Using TPS63805 for Extreme Low Ripple in Optical Module PDF | HTML 27 Oct 2021
Design guide TEC Driver Reference Design for 3.3-V Inputs (Rev. A) 06 Aug 2021
Application note Different Methods to Drive LEDs Using TPS63XXX Buck-Boost Converters (Rev. D) 04 Aug 2021
Application note Supercapacitor Backup Power Supply w/ Current Limit for Smart Electricity Meter (Rev. A) 03 Aug 2021
Application note Selecting a DC/DC Converter for Maximum Battery Life in Pulsed-Load Applications (Rev. A) 26 Jul 2021
Application note A Topical Index of TI Low-Power Buck-Boost Converter Application Notes (Rev. A) PDF | HTML 09 Jun 2021
Application note Layer Design for Reducing Radiated EMI of DC to DC Buck-Boost Converters (Rev. A) PDF | HTML 09 Jun 2021
Technical article Is there a universal tool for DC/DC voltage conversion? 30 Sep 2019
Application note Improving Load Transient Response for Controlled Loads 12 Sep 2019
Application note Using Non-Inverting Buck-Boost Converter for Voltage Stabilization 01 Aug 2019
Application note Buck-boost Converter Battery Life Time Estimation for Wireless Network Cameras (Rev. A) 28 May 2019
Application note Buck-Boost Converters Solving Power Challenges in Optical Modules 13 May 2019
Application note Precise Delayed Start-up with Precise Threshold Enable-pin 15 Apr 2019
Application note Prevent Battery Overdischarge with Precise Threshold Enable Pin 02 Apr 2019
Application note Selecting the right DC/DC converter for maximum battery life 08 Feb 2019
Application note Supercapacitor backup power supply with TPS63802 21 Jan 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Application note Understanding Undervoltage Lockout in Power Devices (Rev. A) 19 Sep 2018
Application note Basic Calculations of a 4 Switch Buck-Boost Power Stage (Rev. B) 09 Jul 2018
EVM User's guide TPS63805EVM-026 Evaluation Module User's Guide 08 Mar 2018
Application note Extending the Soft Start Time in the TPS63010 Buck-Boost Converter 05 Dec 2012
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

Design & development

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

Evaluation board

TPS63805EVM-026 — High Current, High Efficiency Buck-Boost Converter Evaluation Module

The TPS63805EVM-026 is designed to help the users easily evaluate and test the operation and functionality of the TPS63805 Buck-Boost Converter. The EVM operates from 1.3-V to 5.5-V input voltage. Output currents can go up to 2 A in buck mode and boost mode. The user can easily evaluate the (...)
User guide: PDF
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Support software

TIDA-050017 TEC Driver Software Example

TIDCFU0.ZIP (603 KB)
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Simulation model

TPS63805 Unencrypted PSpice Transient Model Package (Rev. B)

SLVMCQ6B.ZIP (50 KB) - PSpice Model
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Calculation tool

Battery Lifetime Estimator (Rev. A)

SLVC808A.ZIP (1889 KB)
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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 (...)
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Reference designs

TIDA-050017 — TEC driver reference design for 3.3V inputs

Many electronic components require their temperature to be regulated for best performance and for longer operating life times. Precise temperature control down to 0.1°C is critical for certain applications such as laser diodes used in optical modules, where even a 1°C change in temperature (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
DSBGA (YFF) 15 View options
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