Description

Synchronous Buck PWM, Step-Down, DC-to-DC Controller Features: Wide bias voltage range 3.0 V to 20 V Wide power stage input range 1 V to 24 V Wide output voltage range: 0.6 V to 85% of input voltage ±0.85% accuracy at 0°C to 70°C All N-channel MOSFET design for low cost Fixed-frequency operation at 300 kHz, 600 kHz, or resistor adjustable 300 kHz to 600 kHz Clock output for synchronizing other controllers No current sense resistor required Internal linear regulator Voltage tracking for sequencing Soft start and thermal overload protection Overvoltage and undervoltage power-good indicator 15 μA shutdown supply current Available in a 20-lead QSOP and 20-lead, 4mm × 4 mm LFCSP