LT8333

RECOMMENDED FOR NEW DESIGNS

Low IQ Boost/SEPIC/Inverting Converter with 3A, 40V Switch

Part Models
2
1ku List Price
Starting From $1.54
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Part Details

  • Wide Input Voltage Range: 2.8V to 40V
  • Ultralow Quiescent Current and Low Ripple
  • Burst Mode® Operation: IQ = 9μA
  • 3A, 40V Power Switch
  • Positive or Negative Output Voltage Programming with a Single Feedback Pin
  • Programmable Frequency (300kHz to 2MHz)
  • Synchronizable to an External Clock
  • Spread Spectrum Frequency Modulation for Low EMI
  • Bias Pin for Higher Efficiency
  • Programmable Undervoltage Lockout (UVLO)
  • Overcurrent and Overtemperature Protection
  • Thermally Enhanced 10-Lead 3mm × 3mm DFN Package
LT8333
Low IQ Boost/SEPIC/Inverting Converter with 3A, 40V Switch
LT8333 Application Circuit LT8333 Performance Graph LT8333 Pin Configuration
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Tools & Simulations

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Evaluation Kits

eval board
EVAL-LT8333-BZ

LT8333 | Low IQ Boost/SEPIC Inverting Converter with 3A, 40V Switch

Product Details

Evaluation circuit EVAL-LT8333-BZ features the LT8333 in a Boost configuration. It operates with a switching frequency of 2MHz and is designed to convert a 4.5V to 20V source to 24V output. The converter can output up to 2A depending on the input voltage (see Figure 3 in the demo manual, Maximum Output Current vs VIN curve).

This evaluation circuit features Spread-Spectrum Frequency Modulation (SSFM) and EMI filters to provide optimum EMI performance. This PCB layout is optimized for good EMI performance and small solution size. The evaluation board contains a selectable jumper, JP1, to aid in the selection of the desired SYNC pin mode of operation. At light load, either pulse-skipping (PULSE SKIP) or low-ripple Burst Mode® operation (BURST) can be selected to improve the efficiency.

The LT8333 boost/SEPIC/inverting converter IC operates over an input range of 2.8V to 40V, suitable for automotive, telecom, and industrial applications. The converter provides adjustable and synchronizable operation from 300kHz to 2MHz with SSFM option. The LT8333 packs other popular features such as soft-start, bias pin, input undervoltage lockout. The IC can exhibit a low quiescent current down to 9μA in BURST mode and 1μA in shutdown, which makes it ideal for battery-operated systems. The LT8333 is assembled in a thermally enhanced 10-lead 3mm × 3mm DFN package.

The data sheet gives a complete description of the device, operation, and application information. The data sheet must be read in conjunction with the demo manual for EVAL-LT8333-BZ.

There is another evaluation board EVAL-LT8333-AZ featuring the LT8333 in a SEPIC configuration.

eval board
EVAL-LT8333-AZ

LT8333 | Low IQ Boost/SEPIC/Inverting Converter with 3A, 40V Switch

Product Details

Evaluation circuit EVAL-LT8333-AZ features the LT8333 in a SEPIC configuration. It operates with a switching frequency of 2MHz and is designed to convert a 3V to 26V source to 12V output. The converter can output up to 1.25A depending on the input voltage (see Figure 3 in the demo manual, maximum output current vs VIN curve).

This evaluation circuit features Spread Spectrum Frequency Modulation (SSFM) and EMI filters to provide optimum EMI performance. This PCB layout is optimized for good EMI performance and small solution size. The evaluation board contains a selectable jumper, JP1, to aid in the selection of the desired SYNC pin mode of operation. At light load, either pulse-skipping (PULSE SKIP) or low-ripple Burst Mode® operation (BURST) can be selected to improve the efficiency.

The LT8333 boost/SEPIC/inverting converter IC operates over an input range of 2.8V to 40V, suitable for automotive, telecom, and industrial applications. The converter provides adjustable and synchronizable operation from 300kHz to 2MHz with SSFM option. The LT8333 packs other popular features such as soft-start, bias pin, input undervoltage lockout. The IC can exhibit a low quiescent current down to 9μA in BURST mode and 1μA in shutdown, which makes it ideal for battery-operated systems. The LT8333 is assembled in a thermally enhanced 10-lead 3mm × 3mm DFN package.

The data sheet gives a complete description of the device, operation, and application information. The data sheet must be read in conjunction with the demo manual for EVAL-LT8333-AZ.

EVAL-LT8333-BZ
LT8333 | Low IQ Boost/SEPIC Inverting Converter with 3A, 40V Switch
EVAL-LT8333-BZ Evaluation Board EVAL-LT8333-BZ Evaluation Board - Top View EVAL-LT8333-BZ Evaluation Board - Bottom View Proper Equipment Setup for EVAL-LT8333-BZ
EVAL-LT8333-AZ
LT8333 | Low IQ Boost/SEPIC/Inverting Converter with 3A, 40V Switch
EVAL-LT8333-AZ Evaluation Board EVAL-LT8333-AZ Evaluation Board - Top View EVAL-LT8333-AZ Evaluation Board - Bottom View

Reference Designs

Figure 1. CN0579 Simplified Block Diagram
CN0579 Circuits from the lab

Quad-Channel IEPE Vibration Sensor Measurement System

Features and Benefits

  • Quad Channel IEPE-Compatible Vibration Sensor Interface
  • Channel Independent Excitation Source and Sensor Bias Removal Circuitry
  • Analog Overvoltage and Undervoltage Protection
  • Sensor Frequency Response from DC up to 54 kHz
  • Synchronized, Full Bandwidth Data Measurement and Capture
CN0579
Quad-Channel IEPE Vibration Sensor Measurement System
Figure 1. CN0579 Simplified Block Diagram
EVAL-CN0579-ARDZ  Evaluation Board - Angle View
EVAL-CN0579-ARDZ Evaluation Board - Top View

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