LT8640SEV#PBF

LT8640S is a synchronous step-down regulator. It 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 device 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. 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.

• Eliminates PCB layout sensitivity, optional spread spectrum modulation
• Wide input voltage range is 3.4V to 42V
• Output ripple is 10mVP-P
• Quiescent current in sleep (internal compensation) is 1.7µA typical at (VEN/UV = 2V, VFB <gt/> 0.97V)
• Forced continuous mode, output soft-start and tracking
• Oscillator frequency is 210KHz typical at (RT = 221K)
• Operating temperature is -40°C to 125°C
• Package style is 24-lead LQFN

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party