XC9131
1A Driver Transistor Built-In, Multi Functional Step-Up DC/DC Converters
XC9131series are synchronous step-up DC/DC converters with a 0.2Ω(TYP.) N-channel driver transistor and a 0.2Ω(TYP.) synchronous P-channel switching transistor built-in. A highly efficient and stable current can be supplied up to 1.0A by reducing ON resistance of the built-in transistors.
The series are able to start operation under the condition which has 0.9V input voltage to generate 3.3V output voltage with a 33Ωload resistor, suitable for mobile equipment using only one Alkaline battery or one Nickel metal hydride battery.
During the operation of a shutdown, the load disconnection function enables to cut the current conduction path from the input to the output.
The voltage adjustable type (XC9131 series) has 0.5V (±0.01V) reference voltage integrated and being able to set an output voltage with external components.
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Input Voltage Range
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0.65V~5.5V
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Voltage Adjustable Type
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VFB=0.50V±0.01V Set up with external components
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Oscillation Frequency
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1.2MHz (±15%)
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Input Current
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1.0A
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Output Current
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500mA @ VOUT=3.3V, VIN=1.8V(TYP.)
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Control Mode Selection
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PWM or Auto PWM/PFM
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Load Transient Response
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100mV @ VOUT=3.3V
VIN=1.8V, IOUT=1mA→200mA
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Protection Circuits
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Thermal shutdown,Over-current limit,Integral latch method
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Functions
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Soft-start,Load Disconnection Function,CL Discharge Function,
Flag-out Function
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Output Capacitor
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Ceramic Capacitor
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Package
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USP-10B
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