ZHCSR83C March 2023 – January 2024 TPSM863252 , TPSM863253 , TPSM863257
PRODUCTION DATA
TPSM86325x integrates a 1uH inductor. TI suggests to use below output cap to make the loop stable. TI suggests CFF range to use 10pF to 100pF.
| Output Voltage (V) | R5 (kΩ) | R6 (kΩ) | Minimum COUT (μF) | Typical COUT (μF) | Maximum COUT (μF) | CFF (pF) |
|---|---|---|---|---|---|---|
| 0.8 | 3.3 | 10.0 | 22 | 44 | 100 | — |
| 1.05 | 7.5 | 10.0 | 10 | 22 | 88 | — |
| 2.5 | 95.0 | 30.0 | 10 | 22 | 88 | 22 |
| 3.3 | 135.0 | 30.0 | 22 | 44 | 100 | 22 |
| 5 | 220.0 | 30.0 | 22 | 44 | 100 | 22 |
| 10 | 470.0 | 30.0 | 22 | 44 | 100 | 10 |
The capacitor value and ESR determines the amount of output voltage ripple. The TPSM86325x are intended for use with ceramic or other low-ESR capacitors. Use Equation 3 to determine the required RMS current rating for the output capacitor.
For this design, one MuRata GRM21BR61A226ME44L, 22µF output capacitor are used. The typical ESR is 2mΩ each.