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The AP63200/AP63201/AP63203/AP63205 are 2A, synchronous buck converters with a wide input voltage range of 3.8V to 32V and fully integrates a 125mΩ high-side power MOSFET and a 68mΩ low-side power MOSFET to provide high-efficiency step-down DC/DC conversion.
The AP63200/AP63201/AP63203/AP63205 devices are easily used by minimizing the external component count due to their adoption of peak current mode control along with its integrated compensation network.
The AP63200/AP63201/AP63203/AP63205 have optimized designs 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. They also have a proprietary gate driver scheme to resist switching node ringing without sacrificing MOSFET turn-on and turn-off times, which further erases high-frequency radiated EMI noise caused by MOSFET switching.
The devices are available in a low-profile, TSOT26 package.
VIN 3.8V to 32V
2A Continuous Output Current
0.8V ± 1% Reference Voltage
22µA Ultralow Quiescent Current
Switching Frequency o 500kHz: AP63200 and AP63201 o 1.1MHz: AP63203 and AP63205
Pulse Width Modulation (PWM) Regardless of Output Load o AP63201
Supports Pulse Frequency Modulation (PFM) o AP63200, AP63203, and AP63205 o Up to 80% Efficiency at 1mA Light Load o Up to 88% Efficiency at 5mA Light Load
Fixed Output Voltage o 3.3V: AP63203 o 5.0V: AP63205
Proprietary Gate Driver Design for Best EMI Reduction
Frequency Spread Spectrum (FSS) to Reduce EMI
Precision Enable Threshold to Adjust UVLO
Protection Circuitry o Overvoltage Protection o Cycle-by-Cycle Peak Current Limit o Thermal Shutdown