ZHCSES0C March 2016 – December 2022 LM5165-Q1
PRODUCTION DATA
The target full-load efficiency is 91% based on a nominal input voltage of 24 V and an output voltage of 3.3 V. The required input voltage range is 3 V to 65 V. The LM5165Y-Q1 is chosen to deliver a fixed 3.3-V output voltage. The switching frequency is set by resistor RRT at approximately 160 kHz. The output voltage soft-start time is 4 ms. The required components are listed in Table 8-4. The component selection procedure for this COT design is quite similar to that of Design 1, see Figure 8-1.
| REF DES | QTY | SPECIFICATION | VENDOR | PART NUMBER |
|---|---|---|---|---|
| CIN | 1 | 1 μF, 100 V, X7R, 1206 ceramic | Murata | GRM31CR72A105KA01L |
| COUT | 1 | 22 μF, 6.3 V, X7S, 0805 ceramic | Murata | GRM21BR660J226ME39K |
| LF | 1 | 150 μH ±20%, 0.29 A, 0.86 Ω typical DCR, 4.8 × 4.8 × 2.9 mm | Coilcraft | LPS5030-154MLC |
| RESR | 1 | 0.5 Ω, 5%, 0402 | Std | Std |
| RRT | 1 | 121 kΩ, 1%, 0402 | Std | Std |
| CSS | 1 | 33 nF, 10 V, X7R, 0402 ceramic | Std | Std |
| U1 | 1 | LM5165Y-Q1 Synchronous Buck Converter, VSON-10, 3.3-V Fixed | TI | LM5165YQDRCRQ1 |