LTC1704
Analog Devices
It features the LTC1704 and LTC1704B.
Design DocumentAnalog
LTC1704/LTC1704B Quick Start Guide for Demonstration Circuit 357
Quick start guide for DC357 featuring LTC1704/LTC1704B, a dual power supply with a 550kHz synchronous buck converter (1.8V, 15A) and a linear regulator (1.5V, 1.5A).
Overview
The DC357 demonstration circuit is a dual power supply featuring the LTC1704 and LTC1704B. It includes a 550kHz synchronous buck converter and an LDO linear regulator. The buck converter operates from a 5V nominal input and provides a 1.8V output at up to 15A, utilizing MOSFET RDS(ON) current sensing to improve efficiency by eliminating discrete sense resistors. The integrated LDO provides a 1.5V output at up to 1.5A and can be powered by either the switcher output or an external supply. The LTC1704 supports Burst Mode operation for light-load efficiency, while the LTC1704B version operates without it. The document provides setup procedures, performance specifications, and efficiency data.
Use Cases
- High-current power supply systems
- Step-down DC/DC conversion for microprocessors
- Dual output power regulation
- Efficiency-critical power designs
- Local regulation using LDO and switcher combinations
Topics
LTC1704
LTC1704B
DC357
synchronous buck converter
linear regulator
LDO
Analog Devices
RDS(ON) current limit
Burst Mode
step-down converter
Referenced Parts
LTC1704B
Analog Devices
It features the LTC1704 and LTC1704B.
| LTC1704 | Analog Devices | It features the LTC1704 and LTC1704B. |
| LTC1704B | Analog Devices | It features the LTC1704 and LTC1704B. |