PCA9450 Application Note for i.MX 8M Processors
Application note for the PCA9450 PMIC, providing design guidelines, component selection, and layout recommendations for NXP i.MX 8M family application processors.
Overview
This application note provides detailed design-in guidelines for the NXP PCA9450 Power Management IC (PMIC) series, which includes the PCA9450A, PCA9450B, and PCA9450C variants. It is specifically optimized for powering the NXP i.MX 8M Mini, i.MX 8M Nano, and i.MX 8M Plus processors. The document details the device's architecture, including six high-efficiency step-down regulators, five LDOs, a 400 mA load switch, and a 2-channel logic level translator. It offers specific technical guidance on component selection for inductors and capacitors from manufacturers such as Sunlord, Murata, and TDK. Key design considerations covered include PCB placement and routing for dynamic voltage scaling (DVS), remote sensing for IR drop compensation, and dual-phase buck configuration for the PCA9450C.
Use Cases
- Portable Li-Ion and Li-polymer battery-powered devices
- 5V adapter-powered non-portable applications
- Powering i.MX 8M application processors and DRAM
- SD card power supply management
- I2C bidirectional voltage level translation
Topics
Referenced Parts
TDK
TDK C1608JB1A226M080AC 22 μF CC0603 10 V BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6
TDK
TDK C1608X5R1A226M080AC 22 μF CC0603 10 V BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6
TDK
BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6 TDK C1608JB1A226M080AC 22 μF CC0603 10 V
TDK
BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6 TDK C1608X5R1A226M080AC 22 μF CC0603 10 V
PCA9450
NXP
The PCA9450 is a single chip Power Management IC (PMIC) specifically designed to support i.MX 8M family processor
PCA9450A
NXP
PCA9450A is companion PMIC for 845S (i.MX 8M Mini)
PCA9450B
NXP
PCA9450B is companion PMIC for 815S (i.MX 8M Nano)
PCA9450C
NXP
PCA9450C is companion PMIC for 865S ( i.MX 8M Plus)
815S
NXP
PCA9450B i.MX 8M Nano (815S)
845S
NXP
PCA9450A i.MX 8M Mini (845S)
865S
NXP
PCA9450C i.MX 8M Plus (865S)
BUCK4
Murata
BUCK3, BUCK4 Murata 1239AS-H-R47M 2520 39 3.8 3.7
BUCK6
Murata
BUCK5, BUCK6 Murata 1286AS-H-R47M 2016 52 3.4 3.2
BUCK6
TDK
BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6 TDK C1608X5R1A226M080AC 22 μF CC0603 10 V
BUCK6
TDK
BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6 TDK C1608JB1A226M080AC 22 μF CC0603 10 V
| 1239AS-H-R47M | Murata | Murata 1239AS-H-R47M 2520 39 3.8 3.7 BUCK1, BUCK2, BUCK3, BUCK4 |
| 1286AS-H-R47M | Murata | Murata 1286AS-H-R47M 2016 52 3.4 3.2 BUCK5, BUCK6 |
| WPN201610UR47MT | Sunlord | Sunlord WPN201610UR47MT 2016 28 5.0 4.1 BUCK5, BUCK6 |
| WPN252012HR47MT | Sunlord | Sunlord WPN252012HR47MT 2520 29 5.6 4.0 BUCK1, BUCK2, BUCK3, BUCK4 |
| C1608JB1A226M080AC | TDK | TDK C1608JB1A226M080AC 22 μF CC0603 10 V BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6 |
| C1608X5R1A226M080AC | TDK | TDK C1608X5R1A226M080AC 22 μF CC0603 10 V BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6 |
| 1239AS-H-R47M | Murata | BUCK3, BUCK4 Murata 1239AS-H-R47M 2520 39 3.8 3.7 |
| 1286AS-H-R47M | Murata | BUCK5, BUCK6 Murata 1286AS-H-R47M 2016 52 3.4 3.2 |
| C1608JB1A226M080AC | TDK | BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6 TDK C1608JB1A226M080AC 22 μF CC0603 10 V |
| C1608X5R1A226M080AC | TDK | BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6 TDK C1608X5R1A226M080AC 22 μF CC0603 10 V |
| PCA9450 | NXP | The PCA9450 is a single chip Power Management IC (PMIC) specifically designed to support i.MX 8M family processor |
| PCA9450A | NXP | PCA9450A is companion PMIC for 845S (i.MX 8M Mini) |
| PCA9450B | NXP | PCA9450B is companion PMIC for 815S (i.MX 8M Nano) |
| PCA9450C | NXP | PCA9450C is companion PMIC for 865S ( i.MX 8M Plus) |
| 815S | NXP | PCA9450B i.MX 8M Nano (815S) |
| 845S | NXP | PCA9450A i.MX 8M Mini (845S) |
| 865S | NXP | PCA9450C i.MX 8M Plus (865S) |
| BUCK4 | Murata | BUCK3, BUCK4 Murata 1239AS-H-R47M 2520 39 3.8 3.7 |
| BUCK6 | Murata | BUCK5, BUCK6 Murata 1286AS-H-R47M 2016 52 3.4 3.2 |
| BUCK6 | TDK | BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6 TDK C1608X5R1A226M080AC 22 μF CC0603 10 V |
| BUCK6 | TDK | BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6 TDK C1608JB1A226M080AC 22 μF CC0603 10 V |