General Description

The AP3502E is a 340kHz fixed frequency, current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 2A load with high efficiency, excellent line and load regulation. The AP3502E exhibits high efficiency at light load. The device integrates N-channel power MOSFET switches with low on-resistance. Current mode control provides fast transient response and cycle-by-cycle current limit.

Features

• Input Voltage Range: 4.5V to 18V

• Fixed 340kHz Frequency

• High Efficiency at Light Load

• High Efficiency: up to 95%

• Output Current: 2A

• Current Mode Control

• Built-in Over Current Protection

• Built-in Thermal Shutdown Function

• Built-in UVLO Function

• Built-in Over Voltage Protection

• Programmable Soft Start

• Hiccup Mode SCP

Applications

• LCD TV

• Set Top Box

• Portable DVD

• Digital Photo Frame