XCL226A0K1H2, DC/DC POL Converter, Adjustable, Synchronous Buck, 3-18 V in, 1-15 V/0.5 A Out, DFN3030-10B

XCL226A0K1H2 is a XCL226 series 0.5A inductor built-in step-down micro DC/DC converter IC with a built-in high-side / low-side driver transistor. This has an operating voltage range of 3.0 to 18.0V and it can support 500mA as an output current with high-efficiency. This is compatible with Low ESR capacitors such as ceramic capacitors for the load capacitor (CL). 0.75V reference voltage source is incorporated in the IC, and the output voltage can be set to a value from 1.0V to 15.0V using external resistors (RFB1, RFB2). 1.2MHz can be selected for the switching frequency. In PWM/PFM automatic switchover control, IC can change the control method between PWM and PFM based on the output current requirement and as a result IC can achieve high efficiency over the full load range. Application includes hot water supply system, recorders, camcorders, refrigerators, air-conditioners, low power systems.

• 500mA output current, 85% at 12V→5V, 1mA) efficiency
• PWM control, PWM/PFM automatic control methods
• Over current protection, integral latch method, thermal shutdown protection circuits
• Ceramic capacitor output capacitor
• 2.70V typical UVLO detect voltage (VIN: 2.8V→2.6V, VFB=0.675V)
• 12.5A typical quiescent current (VFB=0.825V)
• 1.65µA typical stand-by current (VEN/SS=0V)
• 1098 to 1302KHz oscillation frequency range (connected to external components, IOUT=100mA)
• 4.3µH typical inductance (test Freq.=1MHz), 1200mA typical inductor rated current (ΔT=+40°C)
• DFN3030-10B package, operating ambient temperature range from -40 to 105°C