Description

The AP63300/AP63301 is a 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 AP63300/AP63301 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 AP63300/AP63301 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. AP63300 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.

The device is available in a TSOT26 package.

Application(s)

• 5V, 12V, and 24V Distributed Power Bus Supplies
• Flat Screen TV Sets and Monitors
• Power Tools and Laser Printers
• White Goods and Small Home Appliances
• FPGA, DSP, and ASIC Supplies
• Home Audio
• Network Systems
• Gaming Consoles
• Consumer Electronics
• General Purpose Point of Load

Feature(s)

• VIN 3.8V to 32V
• 3A Continuous Output Current
• 0.8V ± 1% Reference Voltage
• 22μA Low Quiescent Current (Pulse Frequency Modulation)
• 500kHz Switching Frequency
• Supports Pulse Frequency Modulation (PFM)

- AP63300

- Up to 88% Efficiency at 5mA Light Load

• Pulse Width Modulation (PWM) Regardless of Output Load

- AP63301

• Proprietary Gate Driver Design for Best EMI Reduction
• Frequency Spread Spectrum (FSS) to Reduce EMI

- AP63300

• 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

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)