Diodes Incorporated AP63356Q

Description

The AP63356Q/AP63357Q is a 3.5A, synchronous buck converter with a wide input voltage range of 3.8V to 32V and fully integrates an 74mΩ high side power MOSFET and a 40mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion. The AP63356Q/AP63357Q device is easily used by minimizing the external component count due to its adoption of peak current mode control along with the integrated compensation network.The AP63356Q/AP63357Q has optimized design for Electromagnetic Interference (EMI) reduction. The converter features Frequency Spread Spectrum (FSS) with a switching frequency jitter of ±6%, which reduces EMI by not allowing emitted energy to stay in any one frequency for a significant period of time. It also has a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which reduces high-frequency radiated EMI noise caused by MOSFET switching. The device is available in a 2x3mm W-QFN2030-13 package.

Features

• Qualified for Automotive Applications
• AEC-Q100 Qualified with the FollowingResults
• Device Temperature Grade 1: -40C to 125C TA Range
• Device HBM ESD Classification Level H1C
• Device CDM ESD Classification Level C3B
• VIN 3.8V to 32V
• 3.5A Continuous Output Current
• 0.8V ± 1% Reference Voltage
• 22µA Ultralow Quiescent Current (Pulse Frequency Modulation)
• 450kHz Switching Frequency
• Pulse Width Modulation (PWM) Regardless of Output Load
• AP63356Q
• Supports Pulse Frequency Modulation (PFM)
• AP63357Q
• Up to 80% Efficiency at 1mA Light Load
• Up to 87% Efficiency at 5mA Light Load
• Proprietary Gate Driver Design for Best EMI Reduction
• Frequency Spread Spectrum (FSS) to Reduce EMI
• Power Good Indicator with 5M Internal Pull-up
• Precision Enable Threshold to Adjust UVLO
• Protection Circuitry
• Undervoltage Lockout (UVLO)
• Output Overvoltage Protection (OVP)
• Output Undervoltage Protection (UVP)
• Cycle-by-Cycle Peak Current Limit
• Thermal Shutdown
• Totally Lead-Free & Fully RoHS Compliant Halogen and Antimony Free. “Green” Device

Typical applications

• Flat Screen TV Sets and Monitors, White Goods and Small Home Appliances, Home Audio, Set Top Boxes, Gaming Consoles
• Network Systems
• Power Tools and Laser Printers
• 12V and 24V Distributed Power Bus Supplies