Data Sheet
Wide Range Input, Dual/Two-Phase, DC-to-DC Synchronous Buck Controller
ADP1850
FEATURES
Wide range input: 2...
Data Sheet
Wide Range Input, Dual/Two-Phase, DC-to-DC Synchronous Buck Controller
ADP1850
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 kHz 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 Over
voltage and overcurrent limit protection Externally programmable soft start, slope compensation and
current sense gain Synchronization input Thermal overload protection Input under
voltage 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 Telecom 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 commonly 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 cu...