AP3211 Datasheet, PDF (1/12 Pages) BCD Semiconductor Manufacturing Limited – 1.4MHz, 1.5A ASYNCHRONOUS DC-DC BUCK CONVERTER

Data Sheet
1.4MHz, 1.5A ASYNCHRONOUS DC-DC BUCK CONVERTER AP3211
General Description
The AP3211 is a 1.4MHz fixed frequency, current
mode, PWM buck (step-down) DC-DC converter,
capable of driving a 1.5A load with high efficiency,
excellent line and load regulation. The device
integrates N-channel power MOSFET switch with
low on-resistance. Current mode control provides fast
transient response and cycle-by-cycle current limit.
A standard series of inductors are available from
several different manufacturers optimized for use
with the AP3211. This feature greatly simplifies the
design of switch-mode power supplies.
The AP3211 is available in SOT-23-6 package.
Features
• Input Voltage Range: 4.5V to 18V
• Output Voltage Adjustable from 0.81V to 15V
• Fixed 1.4MHz Frequency
• High Efficiency: up to 92%
• Output Current: 1.5A
• Current Mode Control
• Built-in Over Current Protection
• Built-in Thermal Shutdown Function
• Built-in UVLO Function
• Built-in Over Voltage Protection
• Built-in Soft-start
Applications
• LCD TV
• DPF
• Portable DVD
Jul. 2011 Rev. 1.3
SOT-23-6
Figure 1. Package Type of AP3211
BCD Semiconductor Manufacturing Limited
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