Products - Step-Up

PFM Controlled Step-Up DC/DC Converter

The XC9111 is a family of PFM controlled step-up DC/DC converter/ controller ICs designed to generate low supply voltage by the combination of PFM control and CMOS structure.The XC9111 has a variable 56% or 75% duty ratio and built-in 2.5Ω N-ch driver transistor.

An external transistor can also be used with some versions within the series for applications which may require larger currents.

A CE pin function is optional allowing for shutdown when the IC is not in use, thereby reducing power consumption to a minimum.

Features:

• Input Voltage: 0.9V ~ 10V
• Output Voltage: 1.5V ~ 7.0V
• Duty Cycle: 55%/75% variable
• Oscillator Frequency: 100KHz, 155kHz
• Max. Output Current: >100mA
• Low Supply Current: 2.0uA (Vout=3.0V)