G5001

Global Mixed-mode Technology Inc. G5001 300kHz DC-DC Step-Down PWM Controller Features „ 3.3V, 2.5V, 1.8V Fixed Output or Adjustable Version „ External PMOS Switch „ Available in SOT-23-5 Package „ Input Range 2.5V~5.5V „ Output Tolerance ±2.5% „ Oscillator Frequency 300KHz, ±15% „ Internal Soft-Start „ Standby Current 0.5µA (Max) „ 1V Reference Voltage for Adjustable Version Applications „ Electronics Information Organizers „ Palmtops „ Cellular and portable phones „ Portable Audio Systems „ Various Multi-function Power Supplies General Description The G5001 series are pure voltage-mode PWM step-down DC/DC converter controllers with built-in high speed low ON resistance drivers. Large output currents are possible by using an externally connected transistor, coil, diode. Output voltage is selectable for 1.8, 2.5V, 3.3V (±2.5%). For other output voltages the FB version, which has a 1V internal reference voltage, is available. With built-in UVLO function, the extern...