DESCRIPTION
A versatile step-up/ down DC/DC converter can be realised by using with large output current only 4 basic external components - transistors, coils, diodes, and capacitors. Output voltage is selectable in 0.1V steps within a 2.4V ~ 6.0V ( ± 2.5% accuracy) range, and switching frequency is set at or 300KHz. GM3326 switches from PWM to PFM control during light loads, and the series offers high efficiencies from light loads through to large output currents. Soft-start time is internally set to 10 msec, which offers protection against rush currents when the power is switched on and also against voltage overshoot. During shutdown (CE pin = L), consumption current can be reduced to as little as 0.5µA or less. FEATURES
Input Voltage Range : 2.0V ~ 10V Output Voltage Range : 2.4V ~ 6.0V ( ± 2.5% accuracy) (selectable in 0.1V steps) Oscillation Frequency : 300KHz ( ± 15% accuracy) Output Current : more than 250mA (VIN=2.4V, VOUT=3.3V) Efficiency : 81% (typ) at 5.0V, 78% (typ) at 3.3V...
Gamma Microelectronics
