Diodes AP3502F - Manual

Data Sheet
340kHz, 2A Synchronous DC-DC Buck Converter AP3502F
Oct. 2012 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
1
General Description
The AP3502F 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
device integrates N-channel power MOSFET
switches with low on-resistance. Current mode
control provides fast transient response and
cycle-by-cycle current limit.
The AP3502F employs complete protection to ensure
system security, including output Over Voltage
Protection, input Under Voltage LockOut,
programmable soft-start, and Over Temperature
Protection.
This IC is available in SOIC-8 package.
Features
• Input Voltage Range: 4.5V to 18V
• Fixed 340kHz Frequency
• 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
Applications
• LCD TV
• Set Top Box
• Portable DVD
• Digital Photo Frame
Figure 1. Package Type of AP3502F
SOIC-8