3.3V to 1.8V, 0.7A Step-down DC-DC converter

Overview

High-efficiency step-down DC-DC converter is targeted for operation from 3.3V input voltage. It is able to supply circuits with programmable output voltage 1.8V at 0.7A output current. The DC-DC converter contains overvoltage protection, and undervoltage-lockout circuit. During startup time DC-DC converter can operate both in the soft start mode, which provides the gradual increase of the output voltage and without it. The embedded Bias and LDO blocks provide a required voltage and current references to DC-DC sub-blocks.

Key Features

Supply voltage: 3.3V analog and 1.0V digital
Adjustable output voltage with trimming: 1.75V÷2.05V (1.8V typical)
Output current 0.7A
Soft start mode
Undervoltage-lockout circuit
Overvoltage protection
Zero-cross detection
Oscillator frequency adjustment
Operating frequency modulation
Thermal-shutdown at 150°C
Embedded voltage/current reference source
Power conversion efficiency 87%@0.7A
Silicon area: ~0.93mm2

Applications

Low-Voltage, High-Density Systems
Broadband, Networking, and Optical Communications Infrastructure

Deliverables

Schematic or NetList
Abstract model (.lef and .lib files)
Layout view (optional)
Behavioral model (Verilog)
Extracted view (optional)
GDSII
DRC, LVS, antenna report
Test bench with saved configurations (optional)
Documentation

Technical Specifications

Foundry, Node

Samsung 28nm FD-SOI

Maturity

silicon proven

Availability

Now

Samsung

Pre-Silicon: 28nm FDS
Silicon Proven: 28nm FDS

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