DC/DC switching regulator design made SIMPLE

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SIMPLE SWITCHER® regulators: Balancing ease of use with design flexibility

The SIMPLE SWITCHER portfolio of Wide VIN DC/DC switching regulators features easy-to-use devices that can handle input voltages as high as 75 V and output current of up to 5 A. Each SIMPLE SWITCHER regulator IC is defined, designed, and developed in an effort to simplify DC/DC power supply design and help get our customers to market faster.

  • Premium performance and unsurpassed scalability with reduced system design complexity and limited external BOM count.
  • Robust SMT-friendly leaded package options with low thermal coefficients.
  • Wide pin pitch that simplifies bench testing, debugging, and design layout.
  • Fully WEBENCH®-enabled and backed by a team of technical experts.

SIMPLE SWITCHER® regulators

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Select product by feature


Synchronous rectification

SIMPLE SWITCHER synchronous DC/DC switching regulators eliminate the need for an external diode or FET, reducing solution size while improving system reliability and performance.

Device Vin (V) Vout (V) Iout (A) Package Datasheet Samples Evaluation module Start a design
LM43600/01/02/03 3.5 to 36 1 to 28 0.5/1/2/3 16HTSSOP Download datasheet Order sample Request EVM Start WEBENCH design
LM46000/01/02 3.5 to 60 1 to 28 0.5/1/2 16HTSSOP Download datasheet Order sample Request EVM Start WEBENCH design
LMR23610/25/30 4 to 36 1 to 30 1/2.5/3 8SO PowerPAD Download datasheet Order sample Request EVM Start WEBENCH design
LM73605* 3.5 to 36 1 to 34 5 30WQFN Download datasheet Order sample Request EVM Start WEBENCH design

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Low IQ

SIMPLE SWITCHER DC/DC regulator ICs with low standby and shutdown quiescent current are ideal for battery-operated systems or systems that spend a majority of the time in a standby state. In addition to improved performance, low quiescent current can also reduce system cost in these types of systems by eliminating the need for a low-IQ LDO in parallel to the regulator.

Device Vin (V) Vout (V) Iout (A) Package Quiescent current (typ) (µA) Datasheet Samples Evaluation module Start a design
LM43600/01/02/03 3.5 to 36 1 to 28 0.5/1/2/3 16HTSSOP 27 Download datasheet Order sample Request EVM Start WEBENCH design
LM46000/01/02 3.5 to 60 1 to 28 0.5/1/2 16HTSSOP 27 Download datasheet Order sample Request EVM Start WEBENCH design
LMR14020/30/50 4 to 40 1 to 36 2/3.5/5 8SO PowerPAD 40 Download datasheet Order sample Request EVM Start WEBENCH design
LM73605* 3.5 to 36 1 to 34 5 30WQFN 15 Download datasheet Order sample Request EVM Start WEBENCH design
LMR16010/20/30 4.5 to 60 1 to 50 1/2/3 8SO PowerPAD 40 Download datasheet Order sample Request EVM Start WEBENCH design

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Step-up (boost)


In contrast to all other SIMPLE SWITCHER DC/DC step-down regulators, the family of boost converters is used to increase an input voltage to a higher output voltage.

This easy-to-use family of DC/DC step-up (boost) regulator ICs can provide up to 60 V output while also reducing board space. Several devices are available with small packaging options – like the SOT23 at less than 3 mm x 3mm - and a minimal number of required external components.

The LM258x series can also be configured as either a boost converter or as a flyback converter. A flyback configuration allows step-down or step-up DC/DC voltage conversion, with a transformer in place of the inductor to provide one or more isolated output voltages.

 

SIMPLE SWITCHER® boost regulators

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Device Output current (A) Input voltage (V) Adj output voltage (V) Packaging Datasheet Samples Evaluation module Start a design
LMR62421 2.1 2.7 to 5.5 3 to 24 SOT-23, LLP-6 Download datasheet Order sample Request EVM Start WEBENCH design
LMR62014 1.4 2.7 to 14 3 to 20 SOT-23 Download datasheet Order sample Request EVM Start WEBENCH design
LMR64010 1A 2.7 to 14 3 to 40 SOT-23 Download datasheet Order sample Request EVM Start WEBENCH design
LMR61428 2.85 1.2 to 14 3 to 14 8VSSOP Download datasheet Order sample Request EVM Start WEBENCH design
LMR70503 0.32 2.7 to 5.5 -0.9 to -5.5 microSMD 8 Download datasheet Order sample Request EVM Start WEBENCH design
LM2586/85 4 4 to 40 1.23 to 60 5DDPAK/TO-263, 5TO-220,
7DDPAK/TO-263, 7TO-220
Download datasheet Order sample Request EVM Start WEBENCH design
LM2588/87 6.5 4 to 40 1.23 to 60 5DDPAK/TO-263, 5TO-220,
7DDPAK/TO-263, 7TO-220
Download datasheet Order sample Request EVM Start WEBENCH design

≤5 required external components

SIMPLE SWITCHER DC/DC switching regulator families can require fewer than 5 external components, making them a great choice for power engineers looking to simplify their system design and lower their BOM and solution count.

Device Vin (V) Vout (V) Iout (A) Package External component count Datasheet Samples Evaluation module Start a design
LM22674/75/76/77 3.5 to 42 1 to 40 0.5/1/3/5 7TO-263
8SO PowerPAD
5 Download datasheet Order sample Request EVM Start WEBENCH design
LM2674/75/76/77 8 to 40 1.23 to 37 0.5/1/3/5 16WSON
8PDIP
8SOIC
14VSON
7DDPAK/TO-263
5 Download datasheet Order sample Request EVM Start WEBENCH design
LM2594/95/96 4.5 to 40 3.3 to 37 0.5/1/3 5DDPAK/TO-263
5TO-220
8PDIP
8SOIC
4 Download datasheet Order sample Request EVM Start WEBENCH design
LM2574/75/76 4 to 40 3.3 to 37 0.5/1/3 14SOIC
8PDIP
16PDIP
5DDPAK/TO-263
5TO-220
4 Download datasheet Order sample Request EVM Start WEBENCH design

High efficiency

SIMPLE SWITCHER DC/DC regulator ICs provide the high efficiency demanded by today's trends of increasing power needs and shrinking board space. Even with the high voltage step-down ratios common in industrial, automotive, and communications infrastructure systems, many SIMPLE SWITCHER regulators provide greater than 90% efficiency at full load as well as high light load efficiency.

Device Vin (V) Vout (V) Iout (A) Package Efficiency for 24 V →5 V, full load,
room temp, 500kHz
Datasheet Samples Evaluation module Start a design
LM43600/01/02/03 3.5 to 36 1 to 28 0.5/1/2/3 16HTSSOP 90% Download datasheet Order sample Request EVM Start WEBENCH design
LM46000/01/02 3.5 to 60 1 to 28 0.5/1/2 16HTSSOP 90% Download datasheet Order sample Request EVM Start WEBENCH design
LM73605* 3.5 to 36 1 to 34 5 30WQFN 92.5% Download datasheet Order sample Request EVM Start WEBENCH design

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Low thermal resistance

Thermal management is a major concern for any power designer, and SIMPLE SWITCHER DC/DC switching regulators are designed to provide superior thermal performance and easy implementation, with robust packaging featuring thermal resistance as low as 20° C/W.

Device Vin (V) Vout (V) Iout (A) Package Thermal resistance (°C/W) Datasheet Samples Evaluation module Start a design
LM2676/77 8 to 40 1.23 to 37 3/5 14VSON
7DDPAK/TO-263
7TO-220
26 Download datasheet Order sample Request EVM Start WEBENCH design
LM2595/96 4.5 to 40 3.3 to 37 0.5/1/3 5DDPAK/TO-263
5TO-220
8PDIP
8SOIC
20 Download datasheet Order sample Request EVM Start WEBENCH design
LM2576/HV 4 to 40/60 1.23 to 37/57V 3 5DDPAK/TO-263 32.4 Download datasheet Order sample Request EVM Start WEBENCH design
LM2593HV/90HV 4.5 to 60 3.3 to 57 1/2 7DPAK/TO-263
7TO-220
20 Download datasheet Order sample Request EVM Start WEBENCH design

Small solution size

The LMR family of SIMPLE SWITCHER DC/DC buck regulators features compact packaging, minimal BOM count, and high switching frequency to allow for the use of small surface mount inductors and chip capacitors.

Device Vin (V) Vout (V) Iout (A) Package Estimated solution size for 24 V →5 V,
full load, 500kHz
Datasheet Samples Evaluation module Start a design
LMR14020/30/50 4 to 40 1 to 36 2/3.5/5 8SO PowerPAD 500mm2 Download datasheet Order sample Request EVM Start WEBENCH design
LMR23610/25/30 4 to 36 1 to 30 1/2.5/3 8SO PowerPAD 305mm2 Download datasheet Order sample Request EVM Start WEBENCH design
LMR16006 4 to 60 .5 to 55 0.6 6SOT 150mm2 Download datasheet Order sample Request EVM Start WEBENCH design
LMR16010/20/30 4.5 to 60 1 to 50 1/2/3 8SO PowerPAD 500mm2 Download datasheet Order sample Request EVM Start WEBENCH design

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2.2 MHz operation

SIMPLE SWITCHER buck regulators featuring low minimum on-time technology allow power supply designers to step down from high VIN to the load voltage with high frequency operation. This eliminates the need for an intermediate voltage rail and reduces total system BOM count.

Device Vin (V) Vout (V) Iout (A) Package Datasheet Samples Evaluation module Start a design
LMR14020/30/50 4 to 40 1 to 36 2/3.5/5 8SO PowerPAD Download datasheet Order sample Request EVM Start WEBENCH design
LMR23610/25/30 4 to 36 1 to 30 1/2.5/3 8SO PowerPAD Download datasheet Order sample Request EVM Start WEBENCH design
LM73605* 3.5 to 36 1 to 34 5 30WQFN Download datasheet Order sample Request EVM Start WEBENCH design
LMR16010/20/30 4.5 to 60 1 to 50 1/2/3 8SO PowerPAD Download datasheet Order sample Request EVM Start WEBENCH design

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AEC-Q100 qualified

SIMPLE SWITCHER has a large portfolio of easy to use DC/DC wide VIN switching regulators qualified to the AEC-Q100 automotive stress test specification. These devices are a great fit for nominal 12 V or 24 V battery systems, with input transient protection as high as 75 V.

Device Vin (V) Vout (V) Iout (A) Package Datasheet Samples Evaluation module Start a design
LMR16006Y-Q1 4 to 40 0.8 to 36 0.6 6SOT Download datasheet Order sample Request EVM Start WEBENCH design
LMR14020/30/50-Q1 4 to 40 1 to 30 2/3/5 8SO PowerPAD Download datasheet Order sample Request EVM Start WEBENCH design
LM43600/01/02/03-Q1 3.5 to 36 1 to 28 0.5/1/2/3 16HTSSOP Download datasheet Order sample Request EVM Start WEBENCH design
LM46000/01/02-Q1 3.5 to 60 1 to 28 0.5/1/2 16HTSSOP Download datasheet Order sample Request EVM Start WEBENCH design
LM2840/41/42-Q1 4.5 to 42 1.28 to 37 0.1/0.3/0.6 6SOT Download datasheet Order sample Request EVM Start WEBENCH design
LM22671/74-Q1 4.5 to 42 1.28 to 37 0.5 8SO PowerPAD Download datasheet Order sample Request EVM Start WEBENCH design
LM22672/75-Q1 4.5 to 42 1.28 to 37 1 8SO PowerPAD Download datasheet Order sample Request EVM Start WEBENCH design
LM22680-Q1 4.5 to 42 1.28 to 37 2 8SO PowerPAD Download datasheet Order sample Request EVM Start WEBENCH design
LM22670/73/76-Q1 4.5 to 42 1.28 to 37 3 8SO PowerPAD Download datasheet Order sample Request EVM Start WEBENCH design
LM22677/78/79-Q1 4.5 to 42 1.28 to 37 5 7TO-263 Download datasheet Order sample Request EVM Start WEBENCH design
LM25574/75/76-Q1 6 to 42 1.2 to 40 0.5/1.5/3 16TSSOP Download datasheet Order sample Request EVM Start WEBENCH design
LM5574/75/76-Q1 6 to 75 1.2 to 70 0.5/1.5/3 16TSSOP Download datasheet Order sample Request EVM Start WEBENCH design
LM3102-Q1 4.5 to 42 0.8 to 7 2.5 20HTSSOP Download datasheet Order sample Request EVM Start WEBENCH design