LTC7124

Name: LTC7124
Brand: Analog Devices
Price: 6.13 USD
Availability: InStock

RECOMMENDED FOR NEW DESIGNS

17V, Dual 3.5A Synchronous Step-Down Regulator with Ultralow Quiescent Current

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $6.13

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Overview

Wide V_IN Range: 3.1V to 17V
Wide V_OUT Range: 0.6V to 99% V_IN
Dual Step-Down Outputs: 3.5A Per Channel
Integrated 80mΩ/40mΩ N-Channel MOSFETs. Provide Up to 95% Efficiency
No-Load I_Q < 8μA with Both Channels Enabled; I_Q < 5.5μA with Only One Channel Enabled
Programmable Frequency (500kHz to 4MHz) with ±25% Frequency Synchronization Range
Configurable for a Two Phase Single Output at Up to 7A
±1.0% Output Voltage Accuracy
Current Mode Operation for Excellent Line and Load
Transient Response
Internal or Programmable External Loop Compensation
Thermally Enhanced 3mm × 5mm QFN-24 Package

Part Models: 4
1ku List Price: Starting From $6.13

Documentation

Data Sheet 1

LTC7124: 17V, Dual 3.5A Synchronous Step-Down Regulator with Ultralow Quiescent Current Data Sheet 06/02/2017

User Guide 1

DC2329A - Demo Manual 07/12/2017

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC7124EUDD#PBF	24-Lead QFN (3mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC7124EUDD#TRPBF	24-Lead QFN (3mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC7124IUDD#PBF	24-Lead QFN (3mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys
LTC7124IUDD#TRPBF	24-Lead QFN (3mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliability Report Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 11, 2019 - 19_0067 Notification of Wafer Fab Location Change for 0.35 BCD Process
		PCN19_0067_Form Material_Report Delta Qualification Matrix Qualification Results Summary Detailed Parts List Other
LTC7124EUDD#PBF	PRODUCTION
LTC7124EUDD#TRPBF	PRODUCTION
LTC7124IUDD#PBF	PRODUCTION
LTC7124IUDD#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Hot Swap Controllers 1
LTC4231	RECOMMENDED FOR NEW DESIGNS	Micropower Hot Swap Controller
Ideal Diodes and PowerPath Controllers 1
LTC4419	RECOMMENDED FOR NEW DESIGNS	18V Dual Input Micropower PowerPath Prioritizer

Parts	Product Life Cycle	Description
LTC3633A LTC3633A-1	PRODUCTION	Dual Channel 3A, 20V Monolithic Synchronous Step-Down Regulator
LTC3636 LTC3636-1	RECOMMENDED FOR NEW DESIGNS	Dual Channel 6A, 20V Monolithic Synchronous Step-Down Regulator

Tools & Simulations

LTspice 1

LTC7124 Demo Circuit - 1MHz Dual Step-Down Regulator with External Loop Compensation (3.1-17V to 1.2V & 2.5V @ 3.5A)

Models for the following parts are available in LTspice:

LTC7124

LTpowerCAD 1

LTC7124 Project - Dual Synchronous Step-Down Regulator (3.1-17V to 1.8V & 2.5V @ 3.5A)

Design tools for the following parts are available in LTpowerCAD:

LTC7124

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTpowerCAD^® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

LTC7124 Demo Board | 17VIN, Dual 3.5A Synchronous Step-Down Regulator with Ultra-Low Quiescent Current

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Product Details

Demonstration circuit DC2329A features the LTC7124IUDD: a wide input and output voltage range, high efficiency and power density, dual 3.5A DC/DC stepdown monolithic regulator. The input voltage range of the DC2329A is 3.1V to 17V. The default setting of VOUT1 is user selectable from 1.2V, 1.5V and 1.8V at 3.5A max. The default setting of VOUT2 is user selectable from 2.5V, 3.3V and 5.0V at 3.5A max. The default switching frequency of DC2329A is set at 1MHz typical. Programmable peak current limit of either 2.6A or 5A can be achieved by changing the setting of ILIM pin. Selectable internal or external loop compensation allows users more options to optimize the loop bandwidth and output load transient response. A user-selectable mode input is provided to allow users to trade off ripple noise for light load efficiency: pulse skipping mode (PS) or Burst Mode^® (BM) of operation delivers higher efficiency at light load while forced continuous conduction mode (FCM) is preferred for noise sensitive applications. The Mode pin can also be used to synchronize the switching frequency to an external clock. Programmable switching frequency ranges from 500kHz to 4MHz with a ±25% synchronization capture range. The constant frequency, peak current mode control architecture and integrated internal or optional external control loop compensation network, allows very fast transient response to line and load changes while maintaining loop stability.