SLLA673 March 2025 MCF8315A , MCF8315C , MCF8315D , MCF8316A , MCF8316C-Q1 , MCF8316D
According to the pin definition requirements of the data sheet, the design requirements are as follows:
| Pin | Description |
|---|---|
| VM | >10uf capacitor to ground and 100nf capacitor to ground, with a withstand voltage twice that of VM input. |
| VM,CP | Connect a 1µF, 16V capacitor between CP and VM |
| CPH,CPL | Connect a 47nF capacitor between CPH and CPL, with a withstand voltage twice that of VM input. |
| AVDD | External 1uF capacitor to ground(Can be 1uF/2.2uF,>500nF across voltage and temperature) |
| DVDD | External 1uF capacitor to ground(Can be 1uF/2.2uF,>500nF across voltage and temperature) |
| SW_BUCK | Select the resistance/inductance value according to the load |
| Buck Mode | Buck output voltage | Max output current from AVDD (IAVDD_MAX) | Max output current from Buck (IBK_MAX) | Buck current limit | AVDD power sequencing |
|---|---|---|---|---|---|
| Inductor - 47μH | 3.3V or 4V or 5V or 5.7V | 20mA | 170mA | 600mA (BUCK_CL = 0b) | Not supported (BUCK_PS_DIS = 1b) |
| Inductor - 47μH | 5V or 5.7V | 20mA | 170mA - IAVDD | 600mA (BUCK_CL = 0b) | Supported (BUCK_PS_DIS = 0b) |
| Inductor - 22μH | 3.3V or 4V or 5V or 5.7V | 20mA | 20mA | 150mA (BUCK_CL = 1b) | Not supported (BUCK_PS_DIS = 1b) |
| Inductor - 22μH | 5V or 5.7V | 20mA | 20mA - IAVDD | 150mA (BUCK_CL = 1b) | Supported (BUCK_PS_DIS = 0b) |
| Resistor - 22Ω | 3.3V or 4V or 5V or 5.7V | 20mA | 10mA | 150mA (BUCK_CL = 1b) | Not supported (BUCK_PS_DIS = 1b) |
| Resistor - 22Ω | 5V or 5.7V | 20mA | 10mA - IAVDD | 150mA (BUCK_CL = 1b) | Supported (BUCK_PS_DIS = 0b) |