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TPS63820

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Low-quiescent current, 4A buck-boost converters with I2C interface

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Data sheet

TPS63820

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck-Boost Vin (max) (V) 5.5 Vin (min) (V) 1.8 Vout (max) (V) 5.5 Vout (min) (V) 1.2 Switch current limit (typ) (A) 7.2 Features Dynamic voltage scaling, Enable, I2C interface, Light-load efficiency, Load Disconnect, Low Quiescent Current, Output discharge, Overtemperature protection, Overvoltage protection, Power good, Prebias startup, Synchronous rectification, True Shutdown, UVLO fixed Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0000027 Duty cycle (max) (%) 100
Rating Catalog Topology Buck-Boost Vin (max) (V) 5.5 Vin (min) (V) 1.8 Vout (max) (V) 5.5 Vout (min) (V) 1.2 Switch current limit (typ) (A) 7.2 Features Dynamic voltage scaling, Enable, I2C interface, Light-load efficiency, Load Disconnect, Low Quiescent Current, Output discharge, Overtemperature protection, Overvoltage protection, Power good, Prebias startup, Synchronous rectification, True Shutdown, UVLO fixed Operating temperature range (°C) -40 to 125 Iq (typ) (A) 0.0000027 Duty cycle (max) (%) 100
DSBGA (YBG) 15 2.550453 mm² 2.029 x 1.257
  • Input voltage range: 1.8V to 5.5V
    • 2.0V minimum input voltage for start-up
  • VOUT range: I2C-configurable 1.2V to 5.5V with 25mV step
  • Output current
    • Up to 3.5A for VIN ≥ 2.5V, VOUT = 3.3V
    • Up to 4A for VIN ≥ 3V, VOUT = 3.3V
  • High efficiency over the entire load range
    • Low 2.3µA operating quiescent current
    • Automatic power save mode, ultra-sonic mode, and forced PWM mode
    • 91.94% efficiency at VIN = 3.6V, VOUT = 3.3V, IOUT = 100µA (in buck-boost mode)
    • 95.33% efficiency at VIN = 3.6V, VOUT = 3.3V, IOUT = 2A (in buck-boost mode)
  • Supports 1.2V logic I/O
  • Three I2C target addresses available by ADDR pin connection
  • Programmable soft-start time, current limit, and buck-boost window
  • Output discharge function
  • Safety and robust protection features
    • Overtemperature protection
    • Input and output overvoltage protection
    • True load disconnect during shutdown
    • Forward and backward current limit
    • Hiccup protection
  • Two device options:
    • TPS63820: preprogrammed 3.3V VOUT
    • TPS638201: program VOUT prior to start-up
  • 15-ball WCSP package (2.0mm × 1.2mm)
  • Input voltage range: 1.8V to 5.5V
    • 2.0V minimum input voltage for start-up
  • VOUT range: I2C-configurable 1.2V to 5.5V with 25mV step
  • Output current
    • Up to 3.5A for VIN ≥ 2.5V, VOUT = 3.3V
    • Up to 4A for VIN ≥ 3V, VOUT = 3.3V
  • High efficiency over the entire load range
    • Low 2.3µA operating quiescent current
    • Automatic power save mode, ultra-sonic mode, and forced PWM mode
    • 91.94% efficiency at VIN = 3.6V, VOUT = 3.3V, IOUT = 100µA (in buck-boost mode)
    • 95.33% efficiency at VIN = 3.6V, VOUT = 3.3V, IOUT = 2A (in buck-boost mode)
  • Supports 1.2V logic I/O
  • Three I2C target addresses available by ADDR pin connection
  • Programmable soft-start time, current limit, and buck-boost window
  • Output discharge function
  • Safety and robust protection features
    • Overtemperature protection
    • Input and output overvoltage protection
    • True load disconnect during shutdown
    • Forward and backward current limit
    • Hiccup protection
  • Two device options:
    • TPS63820: preprogrammed 3.3V VOUT
    • TPS638201: program VOUT prior to start-up
  • 15-ball WCSP package (2.0mm × 1.2mm)

The TPS63820 and TPS638201 are low quiescent current, high output current buck-boost converters fully programmable through I2C. The 2.3µA quiescent current and four low Rdson MOSFETs enable high efficiency from a light to a heavy load range.

Depending on the input voltage, the devices automatically operate in boost, buck, or in buck-boost mode when the input voltage is approximately equal to the output voltage. The transitions between modes occur at defined thresholds and avoid unwanted toggling within the modes which reduces output voltage ripple.

The devices have a fast dynamic response, which enables the regulation of output voltage tightly, even in the event of heavy load transients.

The devices offer a small design size in WCSP. The design size is < 20mm2 with only four external components.

The TPS63820 and TPS638201 are low quiescent current, high output current buck-boost converters fully programmable through I2C. The 2.3µA quiescent current and four low Rdson MOSFETs enable high efficiency from a light to a heavy load range.

Depending on the input voltage, the devices automatically operate in boost, buck, or in buck-boost mode when the input voltage is approximately equal to the output voltage. The transitions between modes occur at defined thresholds and avoid unwanted toggling within the modes which reduces output voltage ripple.

The devices have a fast dynamic response, which enables the regulation of output voltage tightly, even in the event of heavy load transients.

The devices offer a small design size in WCSP. The design size is < 20mm2 with only four external components.
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* Data sheet TPS63820 Low Quiescent Current, 4A Buck-Boost Converters With I2C Interface datasheet (Rev. A) PDF | HTML 26 Jun 2026

Design & development

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Evaluation board

TPS63820EVM — TPS63820 evaluation module

The TPS63820EVM features a highly-efficient, single-inductor, internally compensated, low quiescent current, 4A buck-boost converter in a 15-pin, 2.0mm × 1.2mm × 0.5mm DSBGA package. The output voltage is programmable from 1.2V to 5.5V in 25mV increments through I²C.
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DSBGA (YBG) 15 Ultra Librarian
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