2.8V-5.5V, Power Mangement IC with Four Buck Converters, Two LDOs, Input Voltage Supervisory for PFI, I2C Interface, and 2 GPIO Pins



The MP5417 is a complete power management solution that integrates four high-efficiency, step-down, DC/DC converters, two low-dropout regulators, and two controllable GPO ports.

The constant-on-time (COT) control DC/DC converter provides fast transient response. The 1.5MHz, default, fixed switching frequency during continuous conduction mode (CCM) reduces the external inductor and capacitor values greatly. Four DC/DC converters work with 90-degree phase-shift mode. Full protection features include under-voltage lockout (UVLO), over-current protection (OCP), and thermal shutdown.

The output voltage is adjustable through the I2C bus or preset by the one-time programmable (OTP) function. The power-on/-off sequence is also programmable by the OTP or can be controlled through the I2C bus online. Two GPO pins can be used to expand the power rails needed for different applications.

The MP5417 requires a minimal number of external components and is available in a space-saving, 28-pin QFN (4mmx4mm) package.


  • Four High-Efficiency Step-Down Converters
    • Buck1: 4A DC/DC Converter
    • Buck2: 2A DC/DC Converter
    • Buck3: 4A DC/DC Converter
    • Buck4: 2A DC/DC Converter
    • 2.8V to 5.5V OperatingInputRange
    • Adjustable Switching Frequency
    • Programmable Forced PWM, Auto PFM/PWM Mode
    • Hiccup Over-Current Protection (OCP)
  • Two Low-Dropout Regulators
    • Two 300mA Low Noise LDOs
    • 100mV Dropout at 300mA Load
  • System
    • I2C Bus and OTP
    • Programmable Power Failure Threshold
    • Open-Drain Power Fail Output Pin
    • Flexible Power On/Off Sequence via OTP
    • Flexible DC/DC, LDO On/Off Control
  • Available in a Small QFN-28 (4mmx4mm) Package


  • Vin (min) (V)2.8
  • Vin (max) (V)5.5
  • Regulated Outputs8
  • fsw (max) (kHz)2500
  • Step-Down DC/DC Converter4
  • Step-Up DC/DC Converter0
  • Internal LDO2
  • GradeCatalog
  • PackageQFN-28 (4x4)
  • LDO Current (A)0.3/0.3
  • Step-Down Converter Current (A)4.0/2.0/4.0/2.0
  • Special FeaturesI2C Interface, One-Time Programmable Memory
  • SSInternal
  • PGYes