Diodes Incorporated AP63301Q

Description

The AP63300Q/AP63301Q is 3A, synchronous buck converter with a wide input voltage range of 3.8V to 32V. The device fully integrates a 75mΩ high-side power MOSFET and a 40mΩ low-side power MOSFET to provide high-efficiency step down DC-DC conversion. The AP63300Q/AP63301Q device is easily used by minimizing the external component count due to its adoption of peak current mode control along with its integrated loop compensation network. The AP63300Q/AP63301Q design is optimized for Electromagnetic Interference (EMI) reduction. The device 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. AP63300Q also 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.

Features

• VIN 3.8V to 32V
• 3A Continuous Output Current
• 0.8V ±1% Reference Voltage
• 22µA Ultralow Quiescent Current (Pulse Frequency Modulation)
• 500kHz Switching Frequency
• Supports Pulse Frequency Modulation (PFM)
• AP63300Q
• Up to 88% Efficiency at 5mA Light Load
• Pulse Width Modulation (PWM) Regardless of Output Load
• AP63301Q
• Proprietary Gate Driver Design for Best EMI Reduction
• Frequency Spread Spectrum (FSS) to Reduce EMI
• AP63300Q
• Low-Dropout (LDO) Mode
• Precision Enable Threshold to Adjust UVLO
• Protection Circuitry
• Undervoltage Lockout (UVLO)
• Output Overvoltage Protection (OVP)
• Cycle-by-Cycle Peak Current Limit
• Thermal Shutdown

Typical applications

• 5V, 12V, and 24V Distributed Power Bus Supplies
• Flat Screen TV Sets and Monitors, White Goods and Small Home Appliances, Home Audio, Consumer Electronics
• Network Systems, Optical Communication and Networking Systems