MP5479

MP5479

2.7V to 5.5V PMIC with 4 Buck Converters (2A/2.5A/4.5A/4.5A), 5 LDOs, and Configurable System Settings via the I²C and MTP

Datasheet

Description

The MP5479 is a complete power management solution that integrates four high-efficiency step-down DC/DC converters, five low-dropout (LDO) regulators, and a flexible I²C interface.

Constant-on-time (COT) control in the DC/DC converter provides fast transient response. The adjustable switching frequency (f_SW) (up to 2.75MHz) in continuous conduction mode (CCM) greatly reduces the number of external inductors and capacitors. The output voltage (V_OUT) can be adjusted via the I²C bus or preset via the multiple-time programmable (MTP) memory. The power-on/off sequence can also be configured via the MTP, or it can be controlled via the I²C.

Full protection features include under-voltage lockout (UVLO) protection, over-current protection (OCP), over-voltage protection (OVP), and thermal shutdown. The MP5479 requires a minimal number of standard external components, and is available in a space-saving QFN-26 (3.5mmx4.5mm) package with wettable flanks.

Features & Benefits

High-Efficiency Step-Down Converters:
- Buck 1: 4.5A DC/DC Converter
- Buck 2: 2.5A DC/DC Converter
- Buck 3: 4.5A DC/DC Converter
- Buck 4: 2A DC/DC Converter
- Buck 1 and Buck 3 Can Work in Parallel
- Buck 2 and Buck 4 Can Work in Parallel
- 2.7V to 5.5V Operating Input Voltage (V_IN) Range
- Buck 1, Buck 2, and Buck 3 Optional V_OUT Range: 0.4V to 3.58V/12.5mV Step or 0.4V to 2.2V/7.4mV Step
- Buck 4 V_OUT Range: 0.4V to 3.58V/12.5mV Step
- Adjustable Switching Frequency (f_SW)
- Adjustable Soft-Start Time (t_SS)
- Adjustable Phase Delay
- Configurable PWM Mode, Auto-PFM Mode, and Forced PWM Mode
- Output Over-Current Protection (OCP)
- Output Over-Voltage Protection (OVP)
- One Dedicated RTC LDO
- Four Low-Noise LDOs
- Two Separate Input Power Supplies
- 50mV Dropout at 300mA Load
System:
- I²C Bus and User-Configurable MTP
- Two-Time Programmable MTP with MP5479GRM-0000
- Power-On/Off Control
- Multi-Function LDO2/EN1 Pin (EN1 Input Logic Level ≤ 3.3V)
- Power-On Reset Output
- Flexible Power-On/Off Sequence via the MTP (0.5ms, 2ms, 8ms, or 16ms Selectable Time Slot)
- Flexible DC/DC, LDO On/Off via the MTP
- Available in a QFN-26 (3.5mmx4.5mm) Package
Optimized Performance with MPS Inductor MPL-AL6050 Series

Active Part Numbers:

MP5479GRM-xxxx-P MP5479GRM-xxxx-Z MP5479GRM-0003-P MP5479GRM-0003-Z MP5479GRM-0000-P MP5479GRM-0000-Z

Meaning of P & Z

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The Virtual Bench Pro 4.0 is a Graphical User Interface (GUI) supported by MPS used to configure and monitor multiple MPS digital power solutions with an I²C Interface. This GUI is an intuitive tool that can be used with MPS evaluation kits and helps assist in the evaluation and testing phases of your design.

Hardware & Software Requirements: