Ceramic Cap. Compatible Step-up DC/DC Controllers

The XC9105 series are PWM, PWM/PFM auto switching /manual switching controlled multi-functional step-up DC/DC controllers.

Output will be stable no matter which load capacitors are used but should a low ESR capacitor be used, RSENSE of about 0.1Ω will be required and phase compensation will be achieved. This makes the use of ceramic capacitors much easier and allows for lower output ripple and reduced PCB area requirements. Tantalum and electrolytic capacitors can also be used, in which case, RSENSE becomes unnecessary.

With 0.9V of standard voltage supply internal, and using externally connected components, output voltage can be set up freely within a range of 1.5V to 30V. With 300kHz or 180kHz frequencies, the size of the external components can be reduced. Oscillation frequencies of 100kHz and 500kHz are also available as custom-designed products.

The XC9105 offers both PWM and PWM/PFM auto switching operations and it can be selected by external signal.


Input Voltage Range0.9V~10V
Power Supply Voltage Range1.8V~10V
Output Voltage Range1.5V~30V,Can be set freely with 0.9V(±2.0V) of reference voltage supply and external registors.
Oscillation Frequency100,180,300,500kHz(±15%)
Output CurrentMore than 400mA (VIN=1.8V,VOUT=3.3V)
High Efficiency85%(TYP.)
Stand-by CurrentISTB=1.0μA(MAX.)
Load CapacitorsLow ESR capacitors compatible

Typical Application Circuit

Quality Reports

Technical Document


Package Number of Pins Pcs/Reel Package Size(mm)
SOT-25 5 3,000 2.8 x 2.9 x 1.3
USP-6B 6 3,000 1.8 x 2.0 x 0.7

XC9105 Series Part Numbers

Part number Sample Type of DC/DC Controller Output Voltage Oscillation Frequency Packages EDA Online Store
XC9105D091DR-G Without current limiter 0.9V 100kHz USP-6B
XC9105D091MR-G Without current limiter 0.9V 100kHz SOT-25
XC9105D092DR-G Without current limiter 0.9V 180kHz USP-6B
XC9105D092MR-G Without current limiter 0.9V 180kHz SOT-25
XC9105D093DR-G Without current limiter 0.9V 300kHz USP-6B
XC9105D093MR-G Without current limiter 0.9V 300kHz SOT-25
XC9105D095DR-G Without current limiter 0.9V 500kHz USP-6B
XC9105D095MR-G Without current limiter 0.9V 500kHz SOT-25

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