LT8643SIV#PBF

LT8643 is a synchronous step-down regulator featuring 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. Peak current mode control with a 30ns minimum on-time allows high step-down ratios even at high switching frequencies. It 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. It is used in application such as automotive and industrial supplies, general purpose step-down etc.

• Ultralow EMI emissions on any PCB, eliminates PCB layout sensitivity
• Internal bypass capacitors reduce radiated EMI, optional spread spectrum modulation
• Wide input voltage range is 3.4V to 42V
• 6A maximum continuous, 7A peak output
• Low dropout under all conditions: 100mV at 1A, forced continuous mode
• Output soft-start and tracking
• Oscillator frequency is 210KHz typ at (RT = 221K, TA = 25°C)
• Operating junction temperature is -40°C to 125°C
• Package style is 24-lead LQFN

Hinweise

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