LT8638SEV#PBF

LT8638S 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 input 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. The fast, clean, low overshoot switching edges enable 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. 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 2.8V to 42V, output ripple is <lt/> 10mVP-P
• Fast transient response with external compensation
• PolyPhase® operation upto 12 phases, output soft-start and power good
• Safely tolerates high reverse current
• Oscillator frequency is 200KHz typical at (RT = 226K, TA = 25°C)
• 10A maximum continuous, 12A peak transient output
• Operating junction temperature is -40°C to 125°C
• Package style is 28-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