LT7170-1 Datasheet | Analog Devices

FEATURES GENERAL DESCRIPTION - Silent Switcher® architecture: enables a pact, efficient, low EMI solution - PMBus/I2C serial interface - Telemetry read back includes VOUT, IOUT, VIN, die temperature, and faults - Programmable voltage, current limit, sequencing, soft start and stop, undervoltage and overvoltage, phase, frequency (up to 4 MHz), and loop pensation - Integrated three times programmable NVM - Key parameters selectable by resistor - VOUT set point range: 0.4 V to 5.5 V - VOUT accuracy: ±0.25%, 0.6 V ≤ VOUT ≤ 1.375 V - Differential remote VOUT sense - Fast transient response - Wide VIN supply range: down to 2.9 V or 1.5 V with EXTVCC - Programmable and synchronizable: 400 k Hz to 4 MHz - 24-lead (3.5 mm × 4 mm) LQFN package The LT7170/LT7170-1 are monolithic DC/DC synchronous stepdown regulators that deliver up to 20 A of continuous output current. The LT7170-1 option has two switching phases that are connected to two inductors to drive a single-regulated output supply. The quick, clean, low-overshoot switching edges deliver high efficiency while minimizing electromagnetic interference (EMI) emissions. The I2C-based PMBus 1.3-pliant serial interface enables control of device functions while providing telemetry information for system monitoring. The LT7170/LT7170-1 are supported by the LTpower Play® graphical user interface (GUI) tool. The controlled on-time valley current-mode control with 25 ns typical minimum on-time enables a high switching frequency (f SW) at a low output voltage (VOUT) with excellent transient response in a small overall solution size. VOUT, f SW, and phase are selectable using external configuration resistors. Settings can also be set via the PMBus interface or stored in the on-chip, three times programmable nonvolatile memory (NVM). APPLICATIONS - munications, storage, and industrial systems - Data center and solid state drives TYPICAL APPLICATION To guarantee clean start-up of the powered devices, the LT7170/ LT7170-1 actively...