GENERAL DESCRIPTION
The ADP1878/ADP1879 are versatile current-mode, synchronous step-down controllers. They provide superior transient response, optimal stability, and current-limit protection by using a constant on time, pseudo fixed frequency with a programmable current-limit, current control scheme. These devices offer optimum performance at low duty cycles by using a valley, current-mode control architecture allowing the ADP1878/ADP1879 to drive all N-channel power stages to regulate output voltages to as low as 0.6 V.

FEATURES
   Power input voltage range: 2.95 V to 20 V
   On-board bias regulator
   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 (ADP1879 only)
   Resistor programmable current limit
   Power good with internal pull-up resistor
   Externally programmable soft start
   Thermal overload protection
   Short-circuit protection
   Standalone precision enable input
   Integrated bootstrap diode for high-side drive
   Starts into a precharged output
   Available in a 14-lead LFCSP_WD package

APPLICATIONS
   Telecommunications and networking systems
   Mid-to-high end servers
   Set-top boxes
   DSP core power supplies