Microchip Technology MCP16503 Power Management IC (PMIC)
Microchip Technology MCP16503 Power Management IC (PMIC) is an optimally integrated PMIC for general-purpose eMPUs (Embedded Microprocessor Units) that require Dynamic Voltage Scaling (DVS). The regulators' startup voltages are adjustable via selection resistors, and the regulators can be fully adjusted via I2C.
The MCP16503 integrates four DC-DC Buck regulators and two auxiliary LDOs, and provides a comprehensive interface to the MPU, including an interrupt flag and a 1MHz I2C interface. All buck channels can support loads up to 1A and are 100% duty cycle-capable. Two 300mA LDOs are provided to support sensitive analog loads. The DDR memory voltage (Buck2 output) is selectable via a 3-state input pin. The voltage selection set enables easy migration across different memory generations. The default power channel sequencing is built in per the MPU's requirements.
A dedicated pin (LPM) facilitates the transition to low-power modes and the implementation of backup mode with DDR in self-refresh (Hibernate mode). The Microchip Technology MCP16503 features a low no-load quiescent current and draws less than 10μA in full shutdown. Active discharge resistors are provided on each output. All buck channels support safe startup into pre-biased outputs. The Microchip Technology MCP16503 is available in a 32-pin 5mm x 5mm VQFN package with an operating junction temperature range from -40°C to +125°C.
Features
- 2.7V to 5.5V input voltage range
- Resistor selectable output voltage for the default startup
- Four 1A output current buck channels with 100% maximum duty cycle capability
- 2MHz buck channels, PWM operation
- ±1% voltage accuracy for DDR (Buck 2 output), core (Buck 3 output) and CPU (Buck 4 output)
- Low noise, forced PWM (FPWM), and low IQ, light load, high-efficiency mode available
- I2C-selectable displacement (±16.5%) of PWM switching frequency
- Two auxiliary 300mA low-dropout linear dropout regulators (LDOs)
- 1MHz I2C interface for programming and diagnostics
- Built-in channel sequencing, safe startup, and reset assertion delay
- Support of hibernate, low-power, and high-performance modes with DVS
- Leakage-free interfacing to the MPU in any operating condition through optimized ESD protection
- Less than 300µA low-power mode typical quiescent current (Bucks and LDO1 ON, no load)
- 10µA maximum shutdown current (VIN= 4.5V, TJ = +105°C)
- Cost and size-optimized BOM
- Thermal shutdown and current limit protection
- User-programmable overcurrent fault response
- 32-pin 5mm × 5mm VQFN package
- AEC-Q100 qualified variant available
- -40°C to +125°C junction temperature range
- Buck output default values are programmed at startup with on-board resistors
Applications
- High-performance, general-purpose MPUs
- µC/µP, FPGA, and DSP power
Functional Block Diagram
