Overview
The PCA9450AAHNY is a single-chip Power Management Integrated Circuit (PMIC) designed by NXP USA Inc. to support the i.MX 8M family of application processors. This PMIC is tailored for both portable applications using 1 cell Li-Ion or Li-polymer batteries and non-portable applications powered by a 5 V adapter. It is an integral component for managing power in various devices, ensuring efficient and reliable operation.
Key Specifications
| Specification | Description |
|---|---|
| Package Type | 56-pin HVQFN (High-Voltage Quad Flat No-Lead) with exposed pad, surface mount |
| Buck Regulators | BUCK1, BUCK2, BUCK3: 0.6 V to 2.1875 V, 12.5 mV step, 3000 mA BUCK4: 0.6 V to 3.4 V, 25 mV step, 3000 mA BUCK5, BUCK6: 0.6 V to 3.4 V, 25 mV step, 2000 mA Dynamic Voltage Scaling (DVS) on BUCK1, BUCK2, and BUCK3 Remote sensing on BUCK1, BUCK2, and BUCK3 Configurable as a 6 A dual phase regulator (PCA9450C) |
| LDO Regulators | LDO1: 1.6 V to 1.9 V, 3.0 V to 3.3 V, 100 mV step, 10 mA Additional LDOs with similar specifications |
| Load Switch | 400 mA load switch with built-in active discharge resistor |
| Crystal Oscillator | 32.768 kHz crystal oscillator driver and buffer output |
| Level Translator | 2-channel logic level translator |
| I2C Interface | Fm+ 1 MHz I2C-bus interface |
| ESD Protection | Human Body Model (HBM): +/- 2000 V Charged Device Model (CDM): +/- 500 V |
Key Features
- Supports various memory types (DDR4/LPDDR4/DDR3L) via system UBOOT configuration without hardware changes.
- Power control IO for power ON/OFF and standby/run mode control.
- Internal bias and timing, including power-on sequence and 32 kHz buffer.
- Thermal warning and protection, current limit, and fault monitoring.
- I2C communication and logic control for the application processor.
Applications
- IoT Devices
- Tablets
- Electronic Point of Sale (ePOS) systems
- Industrial applications
Q & A
- What is the PCA9450AAHNY designed for?
The PCA9450AAHNY is designed to support the i.MX 8M family of application processors in both portable and non-portable applications. - What types of batteries does the PCA9450AAHNY support?
It supports 1 cell Li-Ion and Li-polymer batteries. - How many buck regulators does the PCA9450AAHNY have?
The PCA9450AAHNY has six high-efficiency step-down regulators (BUCK1 to BUCK6). - What is the function of the 32.768 kHz crystal oscillator driver?
The 32.768 kHz crystal oscillator driver provides a stable clock signal for the system. - Does the PCA9450AAHNY support Dynamic Voltage Scaling (DVS)?
Yes, it supports DVS on BUCK1, BUCK2, and BUCK3. - What is the package type of the PCA9450AAHNY?
The package type is 56-pin HVQFN (High-Voltage Quad Flat No-Lead) with exposed pad, surface mount. - What are some of the applications of the PCA9450AAHNY?
It is used in IoT devices, tablets, electronic point of sale (ePOS) systems, and industrial applications. - Does the PCA9450AAHNY have ESD protection?
Yes, it has ESD protection with Human Body Model (HBM) +/- 2000 V and Charged Device Model (CDM) +/- 500 V. - How does the PCA9450AAHNY manage power states?
It manages power states including OFF mode, READY mode, and SNVS (Secure Non-Volatile Storage) mode based on the system voltage levels. - What is the role of the 400 mA load switch in the PCA9450AAHNY?
The 400 mA load switch with built-in active discharge resistor helps in managing power distribution within the system. - How does the PCA9450AAHNY support memory configurations?
It supports various memory types (DDR4/LPDDR4/DDR3L) via system UBOOT configuration without requiring hardware changes.
