DC349B External Power Switch Boost Controllers by Analog Devices

Status: Production
Series: LTC1700
RoHS: Compliant
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The LTC1700 is a current mode synchronous step-up DC/DC controller that drives external N-channel and P-channel power MOSFETs using a constant frequency PWM architecture. Current limiting is provided by sensing the voltage drop across the main MOSFET, eliminating the need of a sense resistor. This No RSENSE™ technique helps the LTC1700 maintain high efficiency at heavy loads while Burst Mode operation ensures high efficiency at light loads, thus providing high efficiencies over a wide range of load currents.The LTC1700 operates at a minimum input voltage as low as 0.9V. The device boasts a ±1.5% output voltage accuracy and consumes only 200µA of quiescent current. In shutdown, it only draws 10µA.To prevent inductor current runaway, the duty cycle is limited to 90%. Overvoltage protection is also provided which shuts both the external MOSFETs off when tripped.High constant operating frequency of 530kHz allows the use of small inductors and output capacitors. The LTC1700 can also be synchronized between 400kHz to 750kHz. Burst Mode operation is inhibited when the device is externally clocked or when the SYNC/MODE pin is pulled low to reduce noise and RF interference.

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Prices starting from US$153.80

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Features

High Efficiency: Up to 95%
No Current Sense Resistor Required
Constant Frequency 530kHz Operation Allows Small Size, Surface Mount Inductors
OPTI-LOOP® Compensation Minimizes COUT
Selectable Burst Mode® Operation
Minimum Start-Up Voltage as Low as 0.9V
Synchronizable Between 400kHz and 750kHz
Micropower Shutdown: 10µA
Current Mode Operation for Excellent Line and Load Transient Response
Soft-Start Reduces Supply Current Transients
1.5% Output Voltage Accuracy
Uses Low Value, Small Size, Surface Mount Inductors
Available in 10-Lead MSOP Package

Last 6 months Inventory & Pricing History


Alternative Descriptions

LTC1700EMS Demonstration Circuit | Richardson RFPD


DC349B Development Boards & Evaluation Kits by Linear Technology

DEMO BOARD STEP UP CONVERTER

Status: Unknown
Series: -
RoHS: Unknown
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Specifications

Silicon Manufacturer Linear Technology
Silicon Core Number LTC1700
Kit Application Type Power Management - Voltage Regulator
Application Sub Type Step Up DC / DC Converter
Kit Contents Demonstration Board LTC1700
Product Range -
Automotive Qualification Standard -
SVHC No SVHC (07-Jul-2017)
Features No Rsense Current Mode 4.5 to 28V I/P Regulator Delivers up to 10A at O/P 3.3V & 5V

Frequently Asked Questions

Where can I find additional details, specifications and documents for a DC349B?

Additional datasheets, footprints and schematics for DC349B are listed on our Part Details page. You can also find images and similar parts to DC349B on this page.

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What category does DC349B fall under?

The DC349B is listed under External Power Switch Boost Controllers.

Can I view similar or alternative parts?

You can view similar parts to DC349B when available in the External Power Switch Boost Controllers range under the specifications section at the bottom of the details page.

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Is the DC349B RoHS compliant?

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

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