MICROCHIP MIC2150YML-TR

The MIC2150/1 are simple 2-phase dual-output synchronous buck control ICs featuring small size and high efficiency. The ICs implement PWM control at 500kHz (MIC2150) or 300kHz (MIC2151), with the outputs switching 180° out of phase. The result of the out-of-phase operation is 1MHz input ripple frequency with ripple current cancellation, minimizing the required input filter capacitance. A 1% output voltage tolerance allows the maximum level of system performance. Internal drivers with adaptive gate drive allow the highest efficiency with the minimum external components. A dual threshold enable pin, matched soft-start pins, and a power good output are provided, allowing a high level of control. The MIC2150/1 are available in the small size 4mm×4mm 24-pin MLF package. The MIC2150/1 has a junction operating range from -40°C to +125°C.

• Dual Synchronous Buck Control IC with outputs switching 180 degree out-of-phase
• 4.5V to 14.5V input voltage range
• Adjustable output voltages down to 0.7V
• 1% output voltage accuracy
• MIC2150: 500kHz PWM operation
• MIC2151: 300kHz PWM operation
• Adaptive gate drive allows efficiencies over 95%
• Adjustable current limit with no sense resistor - Senses low-side MOSFET current
• Internal drivers allow 20A per phase
• Power Good output allow simple sequencing
• Dual threshold enable pin
• Independent programmable soft-start pins
• Output over-voltage protection
• Input UVLO
• Works with ceramic output capacitors
• Tiny 4mm×4mm 24-Pin MLF package
• Junction temperature range of -40°C to +125°C

• Multi-output power supplies with sequencing
• DSP, FPGA, CPU and ASIC power supplies
• Telecom and Networking equipment
• Servers