LTC3616
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LTC3616

6A, 4MHz Monolithic Synchronous Step-Down DC/DC Converter

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Part Details
Part Models 8
1ku List Price Starting From $4.55
Features
  • 6A Output Current
  • 2.25V to 5.5V Input Voltage Range
  • Low Output Ripple Burst Mode® Operation: IQ = 75μA
  • ±1% Output Voltage Accuracy
  • Output Voltage Down to 0.6V
  • High Efficiency: Up to 95%
  • Low Dropout Operation: 100% Duty Cycle
  • Programmable Slew Rate on SW Node Reduces Noise and EMI
  • Adjustable Switching Frequency: Up to 4MHz
  • Optional Active Voltage Positioning (AVP) with Internal Compensation
  • Selectable Pulse-Skipping/Forced Continuous/Burst Mode Operation with Adjustable Burst Clamp
  • Programmable Soft-Start
  • Inputs for Start-Up Tracking or External Reference
  • DDR Memory Mode, IOUT = ±3A
  • Available in a 24-Pin 3mm × 5mm QFN Thermally Enhanced Package
Additional Details
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The LTC3616 is a low quiescent current monolithic synchronous buck regulator using a current mode, constant frequency architecture. The no-load DC supply current in sleep mode is only 70μA while maintaining the output voltage (Burst Mode operation) at no load, dropping to zero current in shutdown. The 2.25V to 5.5V input supply voltage range makes the LTC3616 ideally suited for single Li-Ion as well as fixed low voltage input applications. 100% duty cycle capability provides low dropout operation, extending the operating time in battery-powered systems.

The operating frequency is externally programmable up to 4MHz, allowing the use of small surface mount inductors. For switching noise-sensitive applications, the LTC3616 can be synchronized to an external clock at up to 4MHz.

Forced continuous mode operation in the LTC3616 reduces noise and RF interference. Adjustable compensation allows the transient response to be optimized over a wide range of loads and output capacitors.

The internal synchronous switch increases efficiency and eliminates the need for an external catch diode, saving external components and board space. The LTC3616 is offered in a leadless 24-pin 3mm × 5mm thermally enhanced QFN package.

Applications

  • Point-of-Load Supplies
  • Distributed Power Supplies
  • Portable Computer Systems
  • DDR Memory Termination
  • Handheld Devices
Part Models 8
1ku List Price Starting From $4.55

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Jun 30, 2020

- 20_0244

Notification of Wafer Fab Location Change for 0.6µm CMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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- 20_0244

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Notification of Wafer Fab Location Change for 0.6µm CMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC1461A

LTC3616EUDD Demo Board | 6A, 4MHz, Monolithic Synchronous Step-Down DC/DC Converter

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DC1461A

LTC3616EUDD Demo Board | 6A, 4MHz, Monolithic Synchronous Step-Down DC/DC Converter

LTC3616EUDD Demo Board | 6A, 4MHz, Monolithic Synchronous Step-Down DC/DC Converter

Product Detail

Demo Circuit 1461 is a high efficiency, high frequency step-down converter, incorporating the LTC3616 monolithic synchronous regulator. The DC1461A has an input voltage range of 2.25V to 5.5V, and is capable of delivering up to 6A of output current. The output voltage of the DC1461A can be set as low as 0.6V, the reference voltage of the LTC3616. The operating frequency range of the DC1461A is either set to a fixed 2.25 MHz by connecting the frequency pin to SVin, set by an external resistor, or synchronized to an external clock, with a range up to 4 MHz. At low load currents, the DC1461A can operate in either noise sensitive applications, due to the capability of the LTC3616 to operate in pulse-skipping mode, or in high efficiency applications, because the LTC3616 also has Burst-Mode capability. The Burst Mode clamp can be set externally.

Tools & Simulations

Tools & Simulations 2

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

Reference Designs

Reference Designs 1

DE-10 Nano Kit

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Circuits from the lab

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Features and Benefits

  • Analog Devices has worked closely with FPGA and processor manufacturers to develop verified power solutions that optimize cost, size and efficiency in high performance applications
  • Our reference designs are supported by an intuitive design tool set and IP
  • Our team can provide designs for quick prototypes that can speed time to market in the most complex applications
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