ADP1872

Data Sheet Synchronous Current-Mode with Constant On-Time, PWM Buck Controller ADP1872/ADP1873 FEATURES Power input voltage as low as 2.75 V to 20 V Bias supply voltage range: 2.75 V to 5.5 V Minimum output voltage: 0.6 V 0.6 V reference voltage with ±1.0% accuracy Supports all N-channel MOSFET power stages Available in 300 kHz, 600 KHz, and 1.0 MHz options No current-sense resistor required Power saving mode (PSM) for light loads (ADP1873 only) Resistor-programmable current-sense gain Thermal overload protection Short-circuit protection Precision enable input Integrated bootstrap diode for high-side drive 140 µA shutdown supply current Starts into a precharged load Small, 10-lead MSOP package APPLICATIONS Telecom and networking systems Mid to high end servers Set-top boxes DSP core power supplies EFFICIENCY (%) TYPICAL APPLICATIONS CIRCUIT VIN = 2.75V TO 20V CC RC CC2 VOUT RTOP RBOT CVDD2 VDD = 2.75V TO 5.5V CVDD VIN ADP1872/ ADP1873 COMP/EN BST FB DRVH GND SW VDD DRVL...