We use cookies to ensure that we can provide you with the best experience on our website. By using our website, you are consenting to the use of cookies as set out in our policy. OK
Show Prices Inc VAT
Help
  • Sign up for our Newsletter

Introducing Dual Channel Synchronous Step-Down Silent Switcher 2 with Very Low Quiescent Current from Analog Devices, samples and evaluation board available from Anglia

Date Published : 15/02/2021 Share with:

The LT8653S and LT8652S families from Analog Devices are dual step-down regulators that deliver up to 2A or 8.5A of continuous current from both channels and support loads up to 3A or 12A from each channel respectively. Both families use Analog Devices proprietary second generation Silent Switcher architecture to minimize EMI emissions while delivering high efficiency at high switching frequencies. This includes integration of bypass capacitors to optimize high frequency current loops and make it easy to achieve advertised EMI performance by eliminating layout sensitivity.

The LT8653S and LT8652S families feature fast, clean, low overshoot switching edges enable high efficiency operation even at high switching frequencies, leading to a small solution size with a wide control loop bandwidth for fast transient response.

The LT8653S is a full featured, customizable voltage regulator, but also has several pin strap options to select internal 2MHz switching frequency, internal compensation and internal feedback resistor divider options to create a simple, compact two output voltage regulator with only five external components.

LT8652S has output current monitoring and limiting allowing inductors to be selected for the maximum output current in a given application. Differential output voltage sensing provides accurate voltage regulation at the point of load for high current applications. The two channels of the LT8652S can be combined to deliver 17A, and two ICs can be combined for a 4-phase, 34A supply. The LT8652S family is particularly ideal for noise sensitive applications such as PLLs and high bandwidth data and communications systems.

Both families feature a Burst Mode operation enabling ultralow standby current consumption or forced continuous mode can be used to control frequency harmonics across the entire output load range.

The LT8653S and LT8652S are supported by the DC2535A and DC2523A demonstration circuits respectively. Demonstration circuit DC2535A is a 42V, dual channel, 2A synchronous step-down regulator featuring the LT8653S. The demo board is designed for two outputs: 5V and 3.3V from a 5.5V to 42V input. Each output can source up to 2A continuous current at the same time. The wide input range allows a variety of input sources, such as automotive batteries and industrial supplies. The integrated power switches and other necessary circuitry reduce the external component count and simplify design. Selectable spread spectrum mode of operation can further improve EMI/EMC performance. Ultralow quiescent current in Burst Mode® operation achieves high efficiency at very light loads.
Demonstration circuit DC2523A is an 18V, 8.5A (continuous)/12A (peak) synchronous step-down Silent Switcher® with 16µA quiescent current featuring the LT8652S. Top and bottom power switches, compensation components and other necessary circuits are inside of the LT8652S to minimize external components and simplify design. The demo board has two outputs: 3.3V and 1.2V from a 3.6V to 18V input. The wide input range allows a variety of input sources, such as automotive batteries and industrial supplies.

The LT8653S and LT8652S families can be used in a wide range of applications such as General Purpose Step-Down regulators, Server Power, Automotive and Industrial Power Supplies.

Features

 

  • Silent Switcher®2 Architecture:
    • Ultralow EMI on Any PCB
    • Eliminates PCB Layout Sensitivity
    • Internal Bypass Capacitors Reduce Radiated EMI
    • Optional Spread Spectrum Frequency Modulation
  • 2A (LT8653S) and 8.5A (LT8652S) DC from Each Channel Simultaneously
  • Up to 3A (LT8653S) and 12A (LT8653S) on Either Channel
  • Ultralow Quiescent Current Burst Mode® Operation:
    • 6.2μA IQ Regulating 12VIN to 5VOUT1 and 3.3VOUT2 (LT8653S)
    • 16µA IQ Regulating 12VIN to 3.3VOUT (Both Channels) (LT8652S)
    • Output Ripple <10mVP-P
  • ±1.2% 600mV Feedback Voltage with Remote Sense
  • Optional External VC Pin: Fast Transient Response (LT8653S)
  • Output Current Monitor Pins with Current Limiting (LT8652S)
  • Forced Continuous Mode
  • CLKOUT for Up to 4-Phase Operation
  • 94.1% Efficiency at 1A, 5VOUT from 12VIN at 2MHz (LT8653S)
  • 93.6% Efficiency at 6A, 3.3VOUT from 12VIN at 1MHz (LT8652S)
  • 85.6% Efficiency at 6A, 1.0VOUT from 12VIN at 1MHz (LT8652S)
  • Fast Minimum Switch-On Time: 30ns (LT8653S) and 20ns (LT8652S)
  • Adjustable and Synchronizable: 300kHz to 3MHz
  • Small 4mm × 3mm 20-Pin LQFN Package (LT8653S) and 4mm × 7mm 36-Pin LQFN Package (LT8652S)
  • AEC-Q100 Qualification for Automotive Applications in Progress

 

Click here for more information or to buy from Anglia Live.

Click here to download the LT8653S Datasheet

Click here to download the DC2523A Eval Kit manual

Click here to download the LT8652S Datasheet

Click here to download the DC2535A Eval Kit manual

Anglia are offering customers FREE samples and an evaluation kit for the LTC8653S and LT8652S very low quiescent current synchronous step-down regulators from Analog Device, please fill in the form below to register for your FREE samples and evaluation kit now.

 

Requesting....

 

To register for FREE samples and an evaluation kit for the LTC8653S and LT8652S very low quiescent current synchronous step-down regulators from Analog Device, please fill in the form below

First name *
Last name *
Company *
Telephone *
Email Address *
Project Name
Project Volume  *
Project Description

FREE samples for UK and Ireland customers only, subject to availability.

You may also be interested in

Design Techniques for Signal Conditioning with Anglia and Analog Devices, register now for a Free Workshop place

Anglia and Analog Devices are hosting two in depth technical workshops in April. The workshops will focus on the exploration of the signal chain and techniques to quantify noise, signal conditioning of analog /digital converters.


Introducing the AD4130-8 Ultra Low Power 24-Bit Sigma-Delta ADC from Analog Devices. Evaluation board and samples available from Anglia.

The AD4130-8 from Analog Devices is an ultra low power, high precision, measurement solution for low bandwidth battery operated applications.


Maxim Integrated products now available from Anglia Live

Maxim Integrated is now part of Analog Devices - The collective expertise from Maxim and Analog Devices in areas like automotive, connected factory, electrification and digital healthcare are helping to make "what if" become "what is".


Introducing the ADE9430 High Performance Polyphase Energy and Class S Power Quality Monitoring IC from Analog Devices. Evaluation board and samples available from Anglia.

The ADE9430 from Analog Devices is a highly accurate, fully integrated, polyphase energy and power quality monitoring device.


Focus on Motion with the ADXL367 Digital output MEMS accelerometer from Analog Devices that offers excellent resolution and ultralow power consumption. Evaluation board and samples available from Anglia

The ADXL367 from Analog Devices is an ultralow power, 3-axis microelectromechanical systems (MEMS) accelerometer that consumes just 0.89 μA at a 100 Hz output data rate and 180 nA when in motion-triggered wake-up mode


Quad-Channel Isolators from Analog Devices feature Integrated DC-to-DC converter, samples and evaluation board available from Anglia

The ADuM642xA family from Analog Devices are quad-channel digital isolators with an isoPower, integrated, isolated dc-to-dc converter.


ANGLIA-LIVE.COM IS A B2B WEBSITE ONLY
© 2024 Anglia Components Plc. All rights reservedTerms & ConditionsTerms of UsePrivacy PolicyAnti Bribery Statement