ZHCSJ52A December 2019 – August 2021 LP875701-Q1
PRODUCTION DATA
The inductors are L0, L1, L2, and L3 are shown in Section 8.2. The inductance and DCR of the inductor affects the control loop of the buck regulator. TI recommends using inductors similar to those listed in Table 8-1. Pay attention to the saturation current and temperature rise current of the inductor. Check that the saturation current is higher than the peak current limit and the temperature rise current is higher than the maximum expected rms output current. The minimum effective inductance to make sure performance is good is 0.22 μH at maximum peak output current over the operating temperature range. DC resistance of the inductor must be less than 0.05 ? for good efficiency at high-current condition. The inductor AC loss (resistance) also affects conversion efficiency. Higher Q factor at switching frequency usually gives better efficiency at light load to middle load. Shielded inductors are preferred as they radiate less noise.
| MANUFACTURER | PART NUMBER | VALUE | DIMENSIONS L × W × H (mm) | RATED DC CURRENT, ISAT maximum (typical) / ITEMP maximum (typical) (A) | DCR typical / maximum (m?) |
|---|---|---|---|---|---|
| Murata | DFE252012PD-R33M | 0.33 μH (20%) | 2.5 × 2 × 1.2 | 6.0 (–) / 4.6 (–)(1) | - / 23 |