Low-quiescent current, 4A buck-boost converters with I2C interface | YBG | 15

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.