ZHCSLU2B December 2021 – October 2023 LM63460-Q1
PRODUCTION DATA
Table 9-5 shows the intended input, output, and performance parameters for this application example. Note that during cold-crank operation when the input voltage decreases to 4 V, the converter operates close to dropout but the output voltage remains at its 3.3-V setpoint.
DESIGN PARAMETER | VALUE |
---|---|
Input voltage range, steady state | 4 V to 36 V |
Maximum transient input voltage, load dump | 42 V |
Output voltage and full-load current | 3.3 V, 6 A |
Switching frequency | 400 kHz |
Output voltage regulation | ±1% |
IC input current, no-load | < 10 µA |
IC shutdown current | < 1 µA |
Table 9-6 gives the selected buck converter power-stage components with availability from multiple vendors. This design uses a low-DCR inductor and all-ceramic output capacitor implementation.
REF DES | QTY | SPECIFICATION | VENDOR(1) | PART NUMBER | |
---|---|---|---|---|---|
CIN | 4 | 10 µF, 50 V, X7R, 1210, ceramic, AEC-Q200 | AVX | 12105C106K4T2A | |
TDK | CNA6P1X7R1H106K | ||||
10 µF, 50 V, X7S, 1210, ceramic, AEC-Q200 | Murata | GCM32EC71H106KA03 | |||
TDK | CGA6P3X7S1H106M | ||||
COUT | 2 | 100 µF, 6.3 V, X7S, 1210, ceramic, AEC-Q200 | Murata | GRT32EC70J107ME13 | |
3 | 47 µF, 6.3 V, X7R, 1210, ceramic, AEC-Q200 | Murata | GCM32ER70J476KE19L | ||
Taiyo Yuden | JMK325B7476KMHTR | ||||
LO | 1 | 3.3 µH, 13.3 mΩ, 8.4 A, 5.0 × 5.0 × 3.1 mm, AEC-Q200 | Coilcraft | XGL5030-332MEC | |
3.3 µH, 10 mΩ, 8.6 A, 5.5 × 5.3 × 5.1 mm, AEC-Q200 | Coilcraft | XGL5050-332MEC | |||
3.3 µH, 22.5 mΩ, 8.3 A, 6.9 × 6.8 × 2.8 mm, AEC-Q200 | Cyntec | VCMT063T-3R3MN5TM | |||
3.3 µH, 19 mΩ, 16.6 A, 7.3 × 6.6 × 4.8 mm, AEC-Q200 | Würth Electronik | 74437349033 | |||
3.3 µH, 17.1 mΩ, 7.6 A, 7.0 × 6.5 × 4.5 mm, AEC-Q200 | TDK | SPM6545VT-3R3M-D | |||
U1 | 1 | LM63460-Q1 synchronous buck converter, AEC-Q100 | AUTO | Texas Instruments | LM63460AASQRYFRQ1 |
FPWM | LM63460AFSQRYFRQ1 |