Datasheet4U Logo Datasheet4U.com

LTC3446 Datasheet Monolithic Buck Regulator

Manufacturer: Linear Technology (now Analog Devices)

📥 Download Datasheet

General Description

The LTC®3446 combines a synchronous buck DC/DC converter with two very low dropout (VLDO) linear regulators to provide up to three stepped-down output voltages from a single input voltage.

The input voltage range is ideally suited for Li-Ion battery-powered applications, as well as powering low voltage logic from 5V or 3.3V rails.

The output voltage range extends down to 0.4V for the VLDO regulators and 0.8V for the buck.

Key Features

  • n High Efficiency Triple Step-Down Outputs from a Single Input Supply n 1A Synchronous Buck Regulator Provides Main Step-Down Output and Powers Two 300mA VLDO™ Linear Regulators n Output Voltages as Low as 400mV (VLDO Outputs) n Power Good Output n Input Voltage Range: 2.7V to 5.5V n Independent Enable Pin for Each Supply n Low (140µA Typ) No-Load Quiescent Current with All Outputs Enabled n Constant Frequency Current Mode Operation n 2.25MHz Switching Frequency Uses Small Inductors n Defeatable.

More Datasheets from Linear Technology (now Analog Devices)

Part Number Description
LTC3440 Buck-Boost DC/DC Converter
LTC3441 High Current Micropower Synchronous Buck-Boost DC/DC Converter
LTC3442 Micropower Synchronous Buck-Boost DC/DC Converter
LTC3443 High Current Micropower 600kHz Synchronous Buck-Boost DC/DC Converter
LTC3444 Micropower Synchronous Buck-Boost DC/DC Converter
LTC3445 I2C Controllable Buck Regulator
LTC3447 I2C Controllable Buck Regulator
LTC3448 1.5MHz/2.25MHz 600mA Synchronous Step-Down Regulator
LTC3400 Micropower Synchronous Boost Converter
LTC3400B Micropower Synchronous Boost Converter