Integrated Buck-Boost Converter MP8859 by MPS
2.8 - 22V VIN, 3A IOUT, With 4 Switches
The MP8859 from MPS is a synchronous, 4-switch, integrated buck-boost converter capable of regulating the output voltage from a 2.8V to 22V wide input voltage range with high efficiency. The integrated output voltage scaling and adjustable output current limit functions meet the USB power delivery (PD) requirement.
The MP8859 uses constant-on-time (COT) control in buck mode and constant-off-time control in boost mode, providing fast load transient response and smooth buck-boost mode transient. The MP8859 provides auto PFM/PWM or forced PWM switching modes, programmable output constant current (CC) current limit, which supports flexible design for different applications.
Full protection features include over-current protection (OCP), over-voltage protection (OVP), under-voltage protection (UVP), programmable soft start, and thermal shutdown. The MP8859 is available in a 16-pin QFN (3x3mm) package.
Features:
- Wide 2.8V to 22V Operating Input Voltage Range
- 1V to 20.47V Output Voltage Range (5V Default) with 10mV Resolution through I2C
- 3A Output Current or 4A Input Current
- Four Low RDS(ON) Internal Buck Power MOSFETs
- Adjustable Accurate CC Output Current Limit with Internal Sensing MOSFET via I2C
- 500kHz Switching Frequency
- Output Over-Voltage Protection (OVP) Hiccup
- Output Short-Circuit Protection (SCP) with Hiccup
- Over-Temperature Warning and Shutdown
- I2C Interface with ALT Pin
- Four Programmable I2C Addresses
- One-Time Programmable (OTP) Non-Volatile Memory
- I2C Programmable Line Drop Compensation, PFM/PWM Mode, Soft Start, OCP etc.
- EN Shutdown Discharge Programmable
- Available in a QFN-16 (3x3mm) Package
More information can be found on the MPS website.
Your Contact Person
For more information, please contact Thomas Berner.
