The fast, clean, low-overshoot switching edges permit high-efficiency operation, even at high switching frequencies leading to a small, overall solution size. Peak current-mode control with a 25ns minimum on-time, allows high step down ratios even at high switching frequencies. External compensation via the VC pin allows for fast transient response at high switching frequencies. The VC pin also enables current sharing and a CLKOUT pin enables synchronizing other regulators to the LT8642S.
Other operations include Burst Mode that enables low standby current consumption, forced continuous mode that can control frequency harmonics across the entire output load range, or spread spectrum operation that can further reduce EMI emissions. Soft-start and tracking functionality is accessed via the SS pin, and an accurate input voltage UVLO threshold can be set using the EN/UV pin.
The LT8642S Switcher 2 provides high performance, making it ideal for noise-sensitive applications and environments.