DESCRIPTION

The MPM4730 is a synchronous, four-switch integrated buck-boost module with a 2.8V to 22V input voltage (VIN) range. The device regulates the output voltage (VOUT) with high efficiency, and provides integrated VOUT scaling and output current (IOUT) limit functions.

The MPM4730 uses constant-on-time (COT) control in buck mode and constant-off-time control in boost mode, providing a fast load transient response and smooth buck-boost mode transients. The MPM4730 features automatic pulse-frequency modulation (PFM)/pulse-width modulation (PWM) or forced PWM switching modes. It also provides a selectable switching frequency (fSW) and configurable soft start.

Full protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), and thermal shutdown.

The MPM4730 is available in an ECLGA-18 (3mmx3mm) package.

FEATURES

• 2.8V to 22V Operating Input Voltage (VIN) Range

• 0.08V to 1.637V Reference Voltage (VREF) Range with 0.8mV Resolution via the I2C (Default 1V VREF)

• Configurable Output Voltage (VOUT) via the FB Pin

• 1A Max Output Current (IOUT)

• 500kHz/750kHz Selectable Switching Frequency (fSW)

• Output Over-Voltage Protection (OVP) and Short-Circuit Protection (SCP) with Hiccup Mode

• Over-Temperature Warning (OTW) and Shutdown

• I2C Interface with ALT Pin

• One-Time Programmable (OTP) Non-Volatile Memory (NVM)

• I2C-Configurable Pulse-Frequency Modulation (PFM)/Pulse-Width Modulation (PWM) Mode, Soft Start, Over-Current Protection (OCP), and OVP

• Configurable EN Shutdown Discharge

• Available in an ECLGA-18 (3mmx3mmx1.86mm) Package

APPLICATIONS

• Server Power Supply Units (PSUs)

• Buck-Boost Bus Supplies