2.8A,Wide-Input Sensorless CC/CV Step-Down
AX3051/A is a wide input voltage, high efficiency Active CC step-down DC/DC
converter that operates in either CV (Constant Output Voltage) mode or CC (Constant
Output Current) mode.
AX3051/A consists of step-down switching regulator with PWM control. The device
includes a reference voltage source, oscillation circuit, error amplifier and etc.
AX3051/A provides low-ripple power, high efficiency, and excellent transient
characteristics. The PWM control circuit is able to the duty ratio linearly forms 0 up to 90%.
An over current protection function is built outside that it can set by a resistance. An
external compensation is easily to system stable; the low ESR output capacitor can be
With the addition of an internal N-channel Power MOS, a coil, capacitors, and a
diode connected externally, these ICs can function as step-down switching regulators.
They serve as ideal power supply units for portable devices when coupled with the
SOP-8L-EP packages, providing such outstanding features as low current consumption.
Since this converter can accommodate an input voltage up to 34V.
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Rev.1.9 May. 06, 2015