General Description
The XC9301 series is step-up/down DC/DC converter controller ICs with fast, low ON resistance drivers built-in. A
versatile, large output current, step-up/down DC/DC converter can be realized using only 4 basic external components -
transistors, coils, diodes and capacitors.
Output voltage is selectable in 100mV increments within a 2.4V ~ 6.0V (±2.5% accuracy) range and switching frequency is
set at 180kHz or 300kHz.
The XC9302 series 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 10msec 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)
- Oscillation Frequency : 180KHz, 300KHz (±15% accuracy)
- Output Current : more than 250mA
(VIN=2.4V, VOUT=3.3V)
Applications
- Mobile phones
- PDAs
- Palmtop computers
- Portable audio equipment
- Various power supplies
Typical Application Circuit
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