LTC3444
Linear Technology
Demonstration circuit 901A features the LTC3444 and is a highly efficient, 1.5MHz fixed frequency buck-boost DC/DC converter.
Design DocumentAnalog
DC901A Quick Start Guide: LTC3444 Micropower Synchronous Buck-Boost Converter
Quick start guide for the DC901A demo board featuring the LTC3444 buck-boost converter, supporting 0.8V-4.2V output at 400mA for CDMA and HSDPA applications.
Overview
The DC901A demonstration circuit features the LTC3444, a 1.5MHz fixed frequency micropower synchronous buck-boost DC/DC converter. Designed for Li-Ion or three-cell NiCd/NiMH battery applications, it accepts an input voltage between 3.1V and 5.0V. The output voltage is adjustable from 0.8V to 4.2V using a control signal ranging from 0.35V to 2.4V. The circuit is optimized for 3G WCDMA applications, providing the fast transient response necessary for RF power amplifier slewing and featuring built-in output overvoltage protection.
Use Cases
- 3G WCDMA mobile devices
- CDMA and HSDPA RF power amplifier power supplies
- Li-Ion battery-powered portable electronics
- Three-cell NiCd/NiMH battery applications
Topics
LTC3444
DC901A
buck-boost converter
synchronous converter
CDMA
HSDPA
WCDMA
RF power amplifier
DC/DC converter
Referenced Parts
| LTC3444 | Linear Technology | Demonstration circuit 901A features the LTC3444 and is a highly efficient, 1.5MHz fixed frequency buck-boost DC/DC converter. |