SLVUBY7A October 2020 – October 2022 DRA821U , DRA821U-Q1 , LP8764-Q1 , TPS6594-Q1
These settings detail the default voltages, configurations, and monitoring of the LDO rails. All these settings can be changed though I2C after startup. Note that only TPS6594141B-Q1 device contains LDO outputs.
| Register Name | Field Name | TPS6594141B-Q1 | |
|---|---|---|---|
| Value | Description | ||
| LDO1_CTRL | LDO1_EN(1) | 0x0 | Disabled; LDO1 regulator. |
| LDO1_PLDN | 0x2 | 250 Ohm | |
| LDO1_VMON_EN(1) | 0x0 | Disable OV and UV comparators. | |
| LDO1_RV_SEL | 0x1 | Enabled | |
| LDO2_CTRL | LDO2_EN(1) | 0x0 | Disabled; LDO2 regulator. |
| LDO2_PLDN | 0x1 | 125 Ohm | |
| LDO2_VMON_EN(1) | 0x0 | Disabled; OV and UV comparators. | |
| LDO2_RV_SEL | 0x1 | Enabled | |
| LDO3_CTRL | LDO3_EN(1) | 0x0 | Disabled; LDO3 regulator. |
| LDO3_PLDN | 0x1 | 125 Ohm | |
| LDO3_VMON_EN(1) | 0x0 | Disabled; OV and UV comparators. | |
| LDO3_RV_SEL | 0x1 | Enabled | |
| LDO4_CTRL | LDO4_EN(1) | 0x0 | Disabled; LDO4 regulator. |
| LDO4_PLDN | 0x1 | 125 Ohm | |
| LDO4_VMON_EN(1) | 0x0 | Disabled; OV and UV comparators. | |
| LDO4_RV_SEL | 0x1 | Enabled | |
| LDO1_VOUT | LDO1_VSET | 0x1c | 1.80 V |
| LDO1_BYPASS | 0x0 | Linear regulator mode. | |
| LDO2_VOUT | LDO2_VSET | 0x8 | 0.80 V |
| LDO2_BYPASS | 0x0 | Linear regulator mode. | |
| LDO3_VOUT | LDO3_VSET | 0x8 | 0.80 V |
| LDO3_BYPASS | 0x0 | Linear regulator mode. | |
| LDO4_VOUT | LDO4_VSET | 0x38 | 1.800 V |
| LDO1_PG_WINDOW | LDO1_OV_THR | 0x2 | +4% / +40 mV |
| LDO1_UV_THR | 0x2 | -4% / -40 mV | |
| LDO2_PG_WINDOW | LDO2_OV_THR | 0x2 | +4% / +40 mV |
| LDO2_UV_THR | 0x2 | -4% / -40 mV | |
| LDO3_PG_WINDOW | LDO3_OV_THR | 0x2 | +4% / +40 mV |
| LDO3_UV_THR | 0x2 | -4% / -40 mV | |
| LDO4_PG_WINDOW | LDO4_OV_THR | 0x2 | +4% / +40 mV |
| LDO4_UV_THR | 0x2 | -4% / -40 mV | |