ADP1850 Datasheet | Analog Devices

FEATURES Wide range input: 2.75 V to 20 V Power stage input voltage: 1 V to 20 V Output voltage range: 0.6 V up to 90% VIN Output current to more than 25 A per channel Accurate current sharing between channels (interleaved) Programmable frequency: 200 k Hz to 1.5 MHz 180° phase shift between channels for reduced input capacitance ±0.85% reference voltage accuracy from - 40°C to +85°C Integrated boost diodes Power saving mode (PSM) at light loads Accurate power good with internal pull-up resistor Accurate voltage tracking capability Independent channel precision enable Overvoltage and overcurrent limit protection Externally programmable soft start, slope pensation and current sense gain Synchronization input Thermal overload protection Input undervoltage lockout (UVLO) Available in 32-lead 5 mm × 5 mm LFCSP APPLICATIONS High current single and dual output intermediate bus and point of load converters requiring sequencing and tracking capability, including converters for: Point-of-load power supplies Tele base station and networking Consumer Industrial and instrumentation Healthcare and medical GENERAL DESCRIPTION The ADP1850 is a configurable dual output or two-phase, single output dc-to-dc synchronous buck controller capable of running from monly used 3.3 V to 12 V (up to 20 V) voltage inputs. The device operates in current mode for improved transient response and uses valley current sensing for enhanced noise immunity. The architecture enables accurate current sharing between interleaved phases for high current outputs. The ADP1850 is ideal in system applications requiring multiple output voltages: the ADP1850 includes a synchronization feature to eliminate beat frequencies between switching devices; provides accurate tracking capability between supplies and includes precision enable for simple, robust sequencing. Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by...