AX3051-Wide-Input Sensorless CC/CV Step-Down DC/DC Converter DataSheet
AX3051应用资料 AX3051 EVB data AX3051 Calculate Tool
AX3051 is a wide input voltage, high efficiency ActiveCC step-down DC/DC AX3051 is a wide input voltage, high efficiency ActiveCC step-down DC/DC (Constant Output Current) mode.
AX3051 consists of step-down switching regulator with PWM control. The device includes a reference voltage source, oscillation circuit, error amplifier, internal PMOS and etc.
AX3051 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 and short circuit protection functions are built outside that it can set by a resistance. An external compensation is easily to system stable; the low ESR output capacitor can be used.
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 and SOP-8L-EP packages, providing such outstanding features as low current consumption. Since this converter can accommodate an input voltage up to 40V, it is also suitable for the operation via an AC adapter.
- Input Voltage：8V to 40V
- Duty ratio：0% to 90% PWM control
- Oscillation frequency：100K/200KHz
- Thermal Shutdown function.
- Short Circuit Protect (SCP).
- Built-in internal SW N-channel MOS.
- Current mode non-synchronous PWM converter
- External current limit setting.
- Under Voltage Lockout.
- Over Voltage Protection.
- Line-compensation built in.
- 100/200KHz Switching Frequency Eases EMI Design
- Advanced Feature Set
Secondary Cycle-by-Cycle Current Limi
- SOP-8L and SOP-8L-EP Pb-Free packages.