DC2202A Development Boards & Evaluation Kits by Linear Technology

DEMO BOARD SYNC BUCK SILENT SWITCH

Status: Unknown
Series: -
RoHS: Unknown
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Demonstration circuit 2202A is a 42V, 5A micropower synchronous step-down Silent Switcher® with spread spectrum frequency modulation featuring the LT®8640. The demo board is designed for 5V output from a 5.7V to 42V input. The wide input range allows a variety of input sources, such as automotive batteries and industrial supplies. The LT8640 is a compact, ultralow emission, high efficiency, and high speed synchronous monolithic step-down switching regulator. The integrated power switches and inclusion of all necessary circuitry reduce the components count and solution size. Special Silent Switcher architecture minimizes EMI/EMC emissions. Selectable spread spectrum mode can further improve EMI/EMC performance. Ultralow 2.5μA quiescent current in Burst Mode® operation achieves high efficiency at very light loads. Fast minimum on-time of 40ns enables high VIN to low VOUT conversion at high frequency. The LT8640 switching frequency can be programmed either via oscillator resistor or external clock over a 200kHz to 3MHz range. The SYNC pin on the demo board is grounded (JP1 at BURST position) by default for low ripple Burst Mode operation. To synchronize to an external clock, move JP1 to SYNC and apply the external clock to the SYNC turret. Spread spectrum mode and pulse-skipping mode can be selected respectively by moving JP1 shunt. Figure 1 shows the efficiency of the circuit at 12V and 24V input in Burst Mode operation (input from VIN turret pin). Figure 2 Performance Summary SYMBOL VIN VOUT IOUT

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Features


Specifications

Silicon Manufacturer Linear Technology
Silicon Core Number LT8640
Kit Application Type Power Management - Voltage Regulator
Application Sub Type Synchronous Buck Regulator
Kit Contents Demo Board LT8640
Product Range -
Automotive Qualification Standard -
SVHC No SVHC (07-Jul-2017)
Features Synchronous Step-Down Silent Switcher 2MHz Switch Spread Spectrum Freq 5A/5V O/P 5.7-42V Supply


Frequently Asked Questions

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Additional datasheets, footprints and schematics for DC2202A are listed on our Part Details page. You can also find images and similar parts to DC2202A on this page.

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What category does DC2202A fall under?

The DC2202A is listed under Education Maker & Hobbyist Electronics > Development Boards & Evaluation Kits > Power Management Development Kits.

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You can view similar parts to DC2202A when available in the Power Management Development Kits range under the specifications section at the bottom of the details page.

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Is the DC2202A RoHS compliant?

This part has not been flagged as RoHS Compliant.

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