Products - Step-Down

XCL201 400mA, 1.2MHz Synch Step-Down Micro DC/DC with Integrated Inductor

400mA, 1.2MHz Synch Step-Down Micro DC/DC with Integrated Inductor image

Specifications


Property XCL201
Output Current 400mA
Input Voltage 2.0 ~ 6.0V
Output Voltage 0.8 ~ 4.0V
Oscillation Frequency 1.2MHz
Quiescent Current 22µA
Packages CL-2025, CL-2025-02

Product Description


400mA, 1.2MHz Synch Step-Down Micro DC/DC with Integrated Inductor

Application Notes

• XCL201 Series - PWM Only
• XCL202 Series - PWM/PFM Automatic

The XCL201/202 series are 400mA, 1.2MHz synchronous step-down DC-DC converters with integrated inductor. The whole solution, including 4.7uH inductor, measures only 2.5mm x 2.0mm and has a package profile of only 1.0mm making it one of the smallest solutions of its kind on the market today. Requiring only 2 external ceramic capacitors to configure a step-down circuit capable of providing efficiencies in excess of 85%, the XCL201/202 is ideally suited for applications that require high efficiency plus low output noise in an extremely small PCB area.

Input voltage range is 2.0V to 6.0V and output voltages from 0.8V to 4.0V (+/-2%) can be selected in 50mV steps (factory laser trimmed).

The series features a built-in current limiter (constant current and latching) and short circuit protection. A CE pin enables the device to be put into stand-by thereby reducing current consumption from an already low 22uA typ. in operation to less than 1.0uA in stand-by.

Features:

• Input Voltage: 2.0V ~ 6.0V
• Output Voltage: 0.8V ~ 4.0V
• Output Current: 400mA
• Oscillator Frequency: 1.2MHz
• Compatible with ceramic capacitors
• Built-in soft start circuit
• Built-in current limiter circuit
• Stand-by Current: 1.0μA (max)
• Small 2.5mm x 2.0mm x 1.0mm package
• Only 2 External Components required

 





XCL201 Typical Application Circuit

XCL201 Efficiency vs. Output Current