LTC7124 - 17V, Dual 3.5A Synchronous Step-Down Regulator with Ultralow Quiescent Current
Datasheet Documentation
Press Release


Typical Application

LTC7124 Typical Application
LTC7124 Typical Application


The LTC®7124 is a dual channel, 3.5A per output, high efficiency monolithic step-down regulator capable of operating from input supplies up to 17V. The programmable switching frequency ranges from 500kHz to 4MHz with a ±25% external clock synchronization capability around the programmed frequency. The regulator features ultralow quiescent current for high efficiency over a wide VOUT range.

The step-down regulator operates from an input voltage range of 3.1V to 17V and provides an adjustable output range from 0.6V to 99% of VIN while delivering up to 3.5A of output current per channel. A user selectable mode input is provided to allow the user to trade off output ripple for light load efficiency; Burst Mode® operation provides the highest efficiency at light loads, while forced continuous operation provides the lowest output ripple. The LTC7124 includes spread spectrum modulation for low radiated and conductive noise. The LTC7124 is offered in a thermally enhanced, low profile 24-lead 3mm × 5mm QFN package.


3x5 UDD-24

LTC7124 Package Drawing
Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price
LTC7124EUDD#PBF QFN 24 E $5.79 $4.05
LTC7124EUDD#TRPBF QFN 24 E $5.85 $4.11
LTC7124IUDD#TRPBF QFN 24 I $6.42 $4.51
LTC7124IUDD#PBF QFN 24 I $6.36 $4.45
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2329A LTC7124 Demo Board | 17VIN, Dual 3.5A Synchronous Step-Down Regulator with Ultra-Low Quiescent Current $349.00