JAJSQ20 May 2024 TPS650362-Q1
ADVANCE INFORMATION
4 Pin Configuration and Functions
Figure 4-1 TPS65036x-Q1 24-Pin QFN (Top View)| PIN | I/O | TYPE | DESCRIPTION | CONNECTION IF NOT USED | |
|---|---|---|---|---|---|
| NO. | NAME | ||||
| 1 | VLDO | O | Analog | LDO Output Voltage. When LDO is not used, this pin can be used for monitoring an external rail. When LDO and corresponding monitoring are both deactivated in NVM pin can be left floating. | Floating |
| 2 | AGND | — | Ground | Analog Ground | Not applicable |
| 3 | VDD_1P8 | PWR | Analog | Internal Reference Voltage - For Internal Use Only | Not applicable |
| 4 | PGND | — | Ground | Power Ground. | Not applicable |
| 5 | FB_B1 | I | Analog | BUCK1 (Wide VinStep-Down Converter) Feedback. When BUCK1 is deactivated in NVM pin can be left floating. | Floating |
| 6 | NRSTOUT | O | Digital | Reset Output | Floating |
| 7 | BOOT | I | PWR | BOOTCAP pin for BUCK1 (Wide Vin Step-Down Converter) | Floating |
| 8 | LX_B1 | — | Analog | BUCK1 (Wide Vin Step-Down Converter) Switch Node. When BUCK1 is deactivated in NVM pin can be left floating. | Floating |
| 9 | VSYS/PVIN_B1 | I | Power |
Device Input Power and Input Voltage for BUCK1 (Wide Vin Step-Down Converter) |
Input supply |
| 10 | SEQ | I | Digital | Enable and Sequence Control Input | Floating |
| 11 | VREG | O | Power | Gate Drive LDO Output for BUCK1 (Wide Vin Step Down Converter) | Not applicable |
| 12 | FB_B3 | I | Analog | BUCK3 (Low Voltage Step-Down Converter) Feedback. When BUCK3 is not used, this pin can be used for monitoring an external rail. When BUCK3 and corresponding monitoring are both deactivated in NVM pin can be left floating. | Floating |
| 13 | GPIO | I | Digital | General Purpose Input to Sequencer. | Floating |
| I | Digital | Alternative programmable function: Trigger Mode Watchdog Input | |||
| O | Digital | Alternative programmable function: General Purpose Output | |||
| I | Digital | Alternative programmable function: MCU Error Signal Monitoring Input (nERR) | |||
| I | Analog | Alternative programmable function: Watchdog Disable Input. | |||
| 14 | PVIN_B3 | I | Power |
BUCK3 (Low Voltage Step-Down Converter) Input Voltage. PVIN_B2 and PVIN_B3 must be tied together and voltage applied at the same time or after the voltage on VSYS/PVIN_B1 is applied. |
Input supply |
| 15 | LX_B3 | O | Power | BUCK3 (Low Voltage Step-Down Converter) Switch Node. | Floating |
| 16 | PGND | — | Ground | Power Ground. | Not applicable |
| 17 | LX_B2 | O | Power | BUCK2 (Low Voltage Step-Down Converter) Switch Node | Floating |
| 18 | PVIN_B2 | I | Power |
BUCK2 (Low Voltage Step-Down Converter) Input Voltage. PVIN_B2 and PVIN_B3 must be tied together and voltage applied at the same time or after the voltage on VSYS/PVIN_B1 is applied. |
Input supply |
| 19 | VIO | I | Power | IO Supply Voltage pin. | Not applicable |
| 20 | FB_B2 | I | Analog | BUCK2 (Low Voltage Step-Down Converter) Feedback. When BUCK2 is not used, this pin can be used for monitoring an external rail. When BUCK2 and corresponding monitoring are both deactivated in NVM pin can be left floating. | Floating |
| 21 | nINT/GPIO | O | Digital | Interrupt output | Floating |
| I | Digital | Alternative programmable function: Trigger Mode Watchdog Input | |||
| I | Digital | Alternative programmable function: Control Input for Entering and Exiting Low Power Mode | |||
| 22 | SDA | I/O | Ground | I2C interface bidirectional serial data (external pull up). | Pull high |
| 23 | SCL | I | Power | I2C interface serial clock (external pull up). | Pull high |
| 24 | PVIN_LDO | I | Power |
LDO Input Voltage. Apply the voltage on PVINLDO at the same time or after the voltage on VSYS is applied. |
Input supply |