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LM51772RHAR - 55V wide VIN four-switch buck-boost controller with I2C interface

LM51772RHAR - Product Description:

LM51772RHAR is a four switch Buck-Boost controller. It provides a regulated output voltage if the input voltage is higher, equal or lower than the adjusted output voltage. In power save mode the device supports very high efficiency over the complete operation range of the output. The LM51772 runs at a fixed switching frequency, which can be set via the RT/SYNC pin. The switching frequency remains constant during buck, boost and buck-boost operation in forced PWM. 

LM51772RHAR - Key Features:

Input range from 0V (V(BIAS) ≥ 3.5V) to 55V

Output voltage 1V to 55V

Peak current regulation control

Small voltage transition ripple over all operating modes

Dynamic output voltage tracking (digital PWM tracking input, analog tracking input)

- Via I2C interface programming

Shut down quiescent current 3µA

Operating quiescent current 60µA

DRV pin for external FET control

Integrated high voltage supply LDO

Auxiliary high voltage LDO/reference

Integrated full-bridge gate drive

- 2A peak current capability

- Bootstrap over and under-voltage protection

- Integrated boot-strap diode

I2C Interface readout of monitoring features

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