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Switching Regulators Circuits

Switching Regulators:   #'s - B    C - K     L - R     S - Z
 

Last Updated: October 13, 2017 03:06 AM

Capacitance Proximity Switch
Draws very low power - Ideal for battery-powered applications
6 Models Available - Call 806-368-7747


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

±5A, 2.5V (2-Quadrant) μModule Voltage Regulator -  The LTM8052 is a 36ViN, 5A, 2-quadrant constant-voltage, constant-current (CVCC) step-down μModule® regulator.  Included in the package are the switching controller, power switches, inductor and support components.  Operating over an input voltage range of 6V to 36V, the LTM8052 supports an output voltage range of 1.2V to 24V.  __ Linear Technology/Analog Devices App Note, Mar 30th 2012

1.4MHz Switching Regulator Draws Only 10µA Supply Current -  DN256 Design Notes__ Linear Technology/Analog Devices

120W, 24V 5A Output Buck-Boost Voltage Regulator -  The buck-boost converter shown in this figure regulates 24V with 0A–5A load at up to 98.5% efficiency (Figure 2).  It operates from an input voltage range of 12V to 58V.  Adjustable undervoltage and overvoltage lockout protect the circuit.  It has short-circuit protection and the SHORT output flag indicates when there is a short__ Linear Technology/Analog Devices App Note, Oct 3, 2012

12V Output Converter Accepts 4V to 80V Input (5.5V Minimum to Start) -  The LT8705 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage.  The part has integrated input current, input voltage, output current and output voltage feedback loops.  With a wide 2.8V to 80V input and 1.3V to 80V output range, the LT8705__ Linear Technology/Analog Devices App Note, Feb 15th 2013

150V, 100mA Step-Down Regulator Requires Only Three External Components -  The LTC3639 step-down regulator integrates key high performance features into one compact IC .  It is capable of up to 150V input voltage and 100mA output current, utilizing synchronous rectification and low quiescent current to maintain high efficiency over a broad spectrum of load current.  Its adjustable output can be programmed__ Linear Technology/Analog Devices App Note, Jason Leonard Design Engineering Manager-Power Products Jun 18th 2013

24Vin to 1.2Vout AT 15A using Inductor DCR Sensing to Minimize Solution Size & Cost -  This circuit shows a typical application of the LTC3613, configured for DCR sensing in a high step-down solution, 24V to 1.2V, and synchronized to a 350kHz external clock.  __ Linear Technology/Analog Devices App Note, Jun 29th 2012

24Vin to 5VoutAT0.7A Monolithic Isolated Flyback Converter (No Opto or Third Winding) -  The LT3573 is a monolithic switching regulator specifically designed for the isolated flyback topology.  No third winding or opto-isolator is required for regulation.  The part senses the isolated output voltage directly from the primary-side flyback waveform.  A 1.25A, 60V NPN power switch is integrated along with all control__ Linear Technology/Analog Devices App Note, Jan 27th 2011

2-Phase Dual Switching Regulator Fits in Tight Places -  DN210 Design Notes__ Linear Technology/Analog Devices

2-Phase, Spread Spectrum, DDR Memory Supplies with Ceramic Output Capacitors -  The LTC3776 is a 2-phase dual output synchronous stepdown switching regulator controller for DDR/QDR memory termination applications.  The second controller regulates its output voltage to 1/2 VREF while providing symmetrical source and sink output current capability.  __ Linear Technology/Analog Devices App Note,, Jun 29, 2011

–3.3V Negative Converter with 1A Output Current Limit -  The LT8611 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 2.5μA of quiescent current.  Top and bottom power switches are included with all necessary circuitry to minimize the need for external components.  The built-in current sense amplifier with monitor and__ Linear Technology/Analog Devices App Note, Sep 13th 2012

4.3V to 42Vin 3.3V AT 5A Step-Down Converter -  The LT3976 is an adjustable frequency monolithic buck switching regulator that accepts a wide input voltage range up to 40V.  Low quiescent current design consumes only 3.3 μA of supply current while regulating with no load.  Low ripple Burst Mode operation maintains high efficiency at low output currents while keeping the output__ Linear Technology/Analog Devices App Note, Sep 12th 2012

5V High Current Step-Down Switchers -  The LT1241 current mode PWM control IC can be used to make a simple high frequency step-down converter.  This converter also has low manufacturing costs due to simple magnetic components.  This circuit exhibits a wide input range of 30V to 60V while maintaining its 12A 5V output.  It has short circuit protection and uses minimal PC board area due to its 300KHz switching frequency[DN59Design Notes (Linear Technology]__ Linear Technology/Analog Devices

5V to 3.3V Converters for Microprocessor Systems -  AN58 Many popular microprocessors operate from 3.3 V supplies, yet y are used in systems wherepredominate source of power is 5V.  AN58 presents a collection of both linear and switching regulator solutions for conversion of 5V to 3.3 V at currents ranging from 100mA to 20A.  Applications information and a comparison of various bypass capacitor__ Linear Technology/Analog Devices

60V High Efficiency Buck Switching Regulators in SO-8 -  DN202 Design Notes__ Linear Technology/Analog Devices

725V DC Isolated Low Noise μModule Regulator -  The LTM8047 is an isolated flyback μModule DC/DC converter.  The LTM8047 has an isolation rating of 725VDC.  Included in the package are the switching controller, power switches, transformer, and all support components.  Operating over an input voltage range of 3.1V to 32V, the LTM8047 supports an output voltage range of 2.5V__ Linear Technology/Analog Devices App Note, Mar 30th 2012

80V, 98% Efficient, 4-Switch Synchronous Buck-Boost Controller IC with 4 Regulation Loops -  in today’s modern electronic systems, the need for power conversion circuits that can do more than simply convert one voltage to another is growing.  Some systems require a constant current, constant voltage output, while others may require a limit on the maximum current that can be drawn from the input.  Still others may__ Linear Technology/Analog Devices App Note, Albert Wu Design Engineering Manager-Power Products Feb 11th 2013

A Gentle Guide for the Trepidatious -  Linear Technology AN25 __ Designed by Jim Williams - Sep 2nd, 1987

A Low Battery Cutoff -  Also acts as a Master On / Off Switch.  NOW, Also a New P-Mos Version.  Supplies Positive voltage to grounded devices.   __ Designed by G.L. Chemelec

A Monolithic Switching Regulator with 100µV Output Noise -  Linear Technology AN70 __ Designed by Jim Williams - Oct 1st, 1997

A Simple Circuit High Efficiency Step-Down Switching Regulator -  DN73 Design Notes__ Linear Technology/Analog Devices

Achieving Microamp Quiescent Current in Switching Regulators -  DN11 Design Notes __ Linear Technology/Analog Devices

Add a grounded-switch feature for Top Switch on/off control -  06/21/07  EDN Design Ideas:  Adding a couple of components to the control pin of a Topswitch switching regulator enables on/off control __ Circuit Design by Robert N Buono, Aeolian Audio LLC, Bloomfield, NJ

Added components improve switching-regulator stability -  09/29/05 EDN Design Ideas:  Extra components reduce effects of external load capacitance and ESR __ Circuit Design by Wayne Rewinkel, National Semiconductor, Schaumburg, IL

AN25 - Switching Regulators for Poets: A Gentle Guide for the Trepidatious -  Linear Technology AN25 __ Designed by Jim Williams - Sep 2nd, 1987

AN70 - A Monolithic Switching Regulator with 100µV Output Noise -  Linear Technology AN70 __ Designed by Jim Williams - Oct 1st, 1997

AN85 - Low Noise Varactor Biasing with Switching Regulators: Vanquishing Villainous Vitiators Vis-ŕ-Vis Vital Varactors -  Linear Technology AN85 __ Designed by Jim Williams - Aug 1st, 2000

Auto-Adjustable Regulators Power Pentium Pr -  12/07/95  EDN Design Ideas:  Powering intel’s next-generation Pentium Pro (P6) µ proves to be a nontrivial task due to both the greater-than-30W load and the need to finely adjust input voltage level on a chip-by-chip basis.  The AA32A family of switching regulators from Astec America __ Circuit Design by Maury Wright Astec America Inc, Carlsbad, CA

Automotive 5V Regulator with Cold Crank Capability -  The LTC3115-1 is a high voltage monolithic synchronous buck-boost DC/DC converter.  Its wide 2.7V to 40V input and output voltage ranges make it well suited to a wide variety of automotive and industrial applications.  A proprietary low noise switching algorithm optimizes efficiency with input voltages that are above, below or even equal to the output voltage and ensures seamless transitions between operational modes.  __ Linear Technology/Analog Devices App Note, Dec 5, 2011

Automotive 9V-19.5Vin to 5V at 1A with 60V Transient Protection & 1.7MHz Switching Frequency -  The LT3682 is a 1A monolithic buck switching regulator that accepts input voltages from 3.6V to 36V and transients up to 60V.  It features an adjustable and synchronizable switching frequency from 250kHz to 2.2MHz.  It also has the ability to monitor the current flowing through the external catch diode, thus providing an extra level of protection against output fault conditions over the entire operating frequency range, regardless of input voltage__ Linear Technology/Analog Devices App Note, Jul 22, 2010

Automotive Switching Regulators Get Input-Transient-Voltage Protection -  01/24/08  EDN Design Ideas:  A simple scheme protects switching regulators against 50V voltage transients in automotive applications __ Circuit Design by Kevin Daugherty, National Semiconductor, Novi, MI

Basic 2A, 4-Cell Li-Ion Battery Charger with C/10 Termination -  The LTM8062/LTM8062A are complete 32ViN, 2A μModule power tracking battery chargers.  The LTM8062/ LTM8062A provide a constant-current/constant-voltage charge characteristic, a 2A maximum charge current, and employ a 3.3 V float voltage feedback reference, so any desired battery float voltage up to 14.4V for the LTM8062 and__ Linear Technology/Analog Devices App Note, Sep 12th 2012

Bi-Directional Buck-Boost Supercapacitor Backup Supply -  The LT8705 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage.  The part has integrated input current, input voltage, output current and output voltage feedback loops.  With a wide 2.8V to 80V input and 1.3V to 80V output range, the LT8705__ Linear Technology/Analog Devices App Note, Feb 15th 2013

Buck converter charger also provides system power -  11/16/96 Literature Number: SNVA532Switching Regulator provides charge voltage setpoint with Current regulation, and second Switching Regulator provides 5V System Power -Many systems require long-time operation during periods of power loss.  Often, a gel or wet-cell lead-acid battery is best choice because of high capacity and relatively low cost.  The battery charges __ Designed by Application Note Robert Hanrahan, National Semiconductor, Woodcliff Lake, NJ

Buck-converter charger also provides system power -  05/22/97 EDN Design Ideas:  Switching Regulator provide as  charge voltage setpoint with Current regulation, and second Switching Regulator provide as5V System Power -Many systems require long-time operation during periods of power loss.  Often, a gel or wet-cell lead-acid battery is  best choice because of high capacity and relatively low cost.  The battery charges __ Designed by Robert Hanrahan, National Semiconductor, Woodcliff Lake, NJ

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Switching Regulators:   #'s - B    C - K     L - R     S - Z

 


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