ZHCSQP7 august 2023 TPS51385
PRODUCTION DATA
- 1
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Revision History
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
- 8 Application and Implementation
- 9 Device and Documentation Support
- 10Mechanical, Packaging, and Orderable Information
5 Pin Configuration and Functions
Figure 5-1 RJN Package12-Pin VQFN-HRTop ViewTable 5-1 Pin Functions
| PIN | I/O | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| VIN | 1 | P | Input voltage supply pin for the control circuitry. Connect the input decoupling capacitors between VIN and PGND. |
| PGND | 2 | G | Power ground terminal for the internal power FET |
| PG | 3 | O | Open Drain Power-Good Indicator. This pin is asserted low if output voltage is out of PG threshold, overvoltage or if the device is under thermal shutdown, EN shutdown or during soft start. |
| FB | 4 | I | TPS51385 uses FB pin to regulate output voltage via feedback resistor divider network. |
| SS | 5 | O | Soft-start time selection pin for TPS51385. Connecting an external capacitor sets the soft-start time and if no external capacitor is connected, the soft-start time is approximately 1 ms. |
| NC | 6 | — | No connect pin |
| SW | 7 | O | Switch node terminal. Connect the output inductor to this pin. |
VBST | 8 | I | Supply input for the high-side MOSFET gate drive. Connect the bootstrap capacitor between VBST and SW. |
| VCC | 9 | O | 5-V internal VCC LDO output. This pin supplies voltage to the internal circuitry and gate driver. Bypass this pin with a 1-μF capacitor. |
| AGND | 10 | G | Ground of internal analog circuitry. Connect AGND to PGND at a single point close to AGND. |
| EN | 11 | I | Enable pin of buck converter. EN pin is a digital input pin, pull up to enable the converter, pull down to disable. Internal pulldown if EN pin is floating. |
MODE | 12 | I | Mode selection pin. Connect MODE pin to VCC, or pull above 0.8 V for OOA mode operation, connect MODE to AGND or float for Power Save Mode. Internal pulldown if MODE pin is floating. |