ADP1828

Synchronous Buck PWM, Step-Down, DC-to-DC Controller ADP1828 www.DataSheet4U.com FEATURES Wide bias voltage range 3.0 V to 18 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 0oC to 70oC 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 to regulate an output voltage as low as 0.6 V to 85% of the input voltage and is sized to handle large MOSFETs for point-of-load regulators. The ADP1828 is ideal for a wide range of high power applications, such as DSP and processor core I/O power, and general-purpose power in telecommunications, medical imaging, PC, gaming, and industrial applications. It operates from input bias voltages of 3 V to 18 V with an internal LDO that generates a 5 V output for input bias voltages greater than 5.5 V. The ADP1828 operates at a pin-selectable, fixed switching frequency of either 300 kHz or 600 kHz, or at any frequency between 300 kHz and 600 kHz with a resistor. The switching frequency can also be synchronized to an external clock up to 2× the part’s nominal oscillator frequency. The clock output can be used for s...