| Part No.： | LT8643S |
| Page： | 30 Pages |
| Size： | 2392 KB |
| Manufacturer： | Linear Technology |
| Logo： |  |
| Views： | 1 |
| Update Time： | 2023-09-20 09:54:32 |
| DataSheet： | Download |
| Part No. | Packing | SPQ | Marking | MSL | Pins | Temp Range | Package Description | Buy |
| LT8643SEV#PBF | Tray | 540 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) | |
| LT8643SEV#TRPBF | Reel | 2500 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) | |
| LT8643SEV#TRMPBF | Reel | 500 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) | |
| LT8643SIV#PBF | Tray | 540 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) | |
| LT8643SIV#TRPBF | Reel | 2500 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) | |
| LT8643SIV#TRMPBF | Reel | 500 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) | |
| LT8643SEV#WPBF | Tray | 540 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) | |
| LT8643SEV#WTRPBF | Reel | 2500 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) | |
| LT8643SEV#WTRMPBF | Reel | 500 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) | |
| LT8643SIV#WPBF | Tray | 540 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) | |
| LT8643SIV#WTRPBF | Reel | 2500 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) | |
| LT8643SIV#WTRMPBF | Reel | 500 | 8643S | 3 | 24 | -40°C ~ 125°C | 24-Lead LQFN (4mm x 4mm x 0.94mm) |
The LT8643S synchronous step-down regulator features second generation Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at high switching frequencies. This includes the integration of bypass capacitors to optimize all the fast current loops inside and make it easy to achieve advertised EMI performance by reducing layout sensitivity. This performance makes the LT8643S ideal for noise-sensitive applications and environments.
Peak current mode control with a 30ns minimum on-time allows high step-down ratios even at high switching frequencies. The LT8643S has external compensation to enable current sharing and fast transient response at high switching frequencies.
Burst Mode operation enables ultralow standby current consumption, forced continuous mode can control frequency harmonics across the entire output load range, or spread spectrum operation can further reduce EMI emissions.
