DC1863A Micropower Buck Regulators by Analog Devices

Status: Production
Series: LTC3621
RoHS: Compliant
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The LTC3621/LTC3621-2 is a high efficiency 17V, 1A synchronous monolithic step-down regulator. The switching frequency is fixed to 1MHz or 2.25MHz with a ±40% synchronizing range. The regulator features ultralow quiescent current and high efficiencies over a wide VOUT range.The step-down regulator operates from an input voltage range of 2.7V to 17V and provides an adjustable output range from 0.6V to VIN while delivering up to 1A of output current. A user-selectable mode input is provided to allow the user to trade off ripple noise for light load efficiency; Burst Mode operation provides the highest efficiency at light loads, while pulse-skipping mode provides the lowest voltage ripple. The MODE pin can also be used to allow the user to sync the switching frequency to an external clock. LTC3621 Options Part Name Frequency VOUT LTC3621 1.00MHz Adjustable LTC3621-3.3 1.00MHz 3.3V LTC3621-5 1.00MHz 5V LTC3621-2 2.25MHz Adjustable LTC3621-23.3 2.25MHz 3.3 LTC3621-25 2.25MHz 5V

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Features

Wide VIN Range: 2.7V to 17V
Wide VOUT Range: 0.6V to VIN
95% Max Efficiency
Low IQ < 3.5μA, Zero-Current Shutdown
Constant Frequency (1MHz/2.25MHz)
Full Dropout Operation with Low IQ
1A Rated Output Current
±1% Output Voltage Accuracy
Current Mode Operation for Excellent Line and Load Transient Response
Synchronizable to External Clock
Pulse-Skipping, Forced Continuous, Burst Mode® Operation
Internal Compensation and Soft-Start
Overtemperature Protection
Compact 6-Lead DFN (2mm × 3mm) Package or Thermally-Enhanced MS8E Package with Power Good Output and Independent SGND Pin
AEC-Q100 Qualified for Automotive Applications

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Alternative Descriptions

LTC3621 DC to DC Converter and Switching Regulator Chip 0.6V to 2.7V/0.6V to 17V Output Demonstration Circuit | Richardson RFPD


DC1863A Development Boards & Evaluation Kits by Linear Technology

DEMO BOARD SYNC BUCK REGULATOR

Status: Unknown
Series: -
RoHS: Unknown
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Demonstration circuit 1863 is a step-down converter, capable of delivering up to 1A of output current from a minimum input voltage of 2.7V. The DC1863A uses the power-saving LTC®3621 1MHz monolithic synchronous buck regulator in a small 8-lead MS8 package. The LTC3621 IC quiescent currents can be as low as 3.5μA in normal operation, and less than 0.1μA in shut down. The output voltage range of the DC1863A is from as low as 0.6V, the reference voltage of the LTC3621, to as high as the maximum input voltage, 17V. The DC1863A can operate in three distinct operating modes: Burst Mode® PERFORMANCE SUMMARY

Features


Specifications

Silicon Manufacturer Linear Technology
Silicon Core Number LTC3621
Kit Application Type Power Management - Voltage Regulator
Application Sub Type Synchronous Buck Regulator
Kit Contents Demo Board LTC3621
Product Range -
Automotive Qualification Standard -
SVHC No SVHC (07-Jul-2017)
Features 1A Monolithic Sync Buck Regulator 1MHz Switching Frequency Burst Mode Operation Vin 2.7V to 17V

Frequently Asked Questions

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What category does DC1863A fall under?

The DC1863A is listed under Micropower Buck Regulators.

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You can view similar parts to DC1863A when available in the Micropower Buck Regulators range under the specifications section at the bottom of the details page.

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Is the DC1863A RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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