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DC349B

Description
eval board boost reg ltc1700
CategoryDevelopment board/suite/development tools   
File Size116KB,3 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance  
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DC349B Overview

eval board boost reg ltc1700

DC349B Quick Start Guide
 
 
 
 
DESCRIPTION
 
Demonstration Circuit DC349B demonstrates a synchronous step-up DC/DC converter using the
LTC1700 controller.
 
The LTC1700 is a current mode No R
SENSE
™ synchronous step-up controller with up to 95%
efficiency. Applications include 2.5V to 3.3V or 5V converters, 2.5V to 5V converters, single-
cell Li-Ion to 5V applications or two cell AA to 3.3V or 5V applications.
 
The LTC1700’s 550kHz operating frequency allows the use of small inductors and capacitors.
The device can also be synchronized to frequencies between 400kHz to 750kHz. Burst Mode™
operation is disabled when the device is synchronized or the SYNC/MODE pin is pulled low to
reduce noise.
 
To prevent inductor current runaway, the duty cycle is limited to 90%. Overvoltage protection
turns both external MOSFETs off when the output rises about 5% above the regulated value.
 
DC349B provides output voltages of 3.3V or 5V (jumper selectable).
 
 
QUICK START GUIDE
 
1. Proper setup is essential for accurate and meaningful evaluation of efficiency and
regulation. Figure 1 shows the appropriate arrangement of supply, load, ammeters and
voltmeters.
 
Figure 1. DC349B Test and Measurement Setup

DC349B Related Products

DC349B LTC1700EMS#TR LTC1700EMS#TRPBF LTC1700EMS#PBF
Description eval board boost reg ltc1700 IC reg ctrlr bst pwm CM 10-msop IC REG CTRLR BOOST 10MSOP IC REG CTRLR BOOST 10MSOP
Brand Name - Linear Technology Linear Technology Linear Technology
Is it Rohs certified? - incompatible conform to conform to
Maker - Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code - MSOP MSOP MSOP
package instruction - TSSOP, TSSOP10,.19,20 TSSOP, TSSOP, TSSOP10,.19,20
Contacts - 10 10 10
Manufacturer packaging code - MS MS MS
Reach Compliance Code - _compli compliant compliant
ECCN code - EAR99 EAR99 EAR99
Is Samacsys - N N N
Analog Integrated Circuits - Other Types - SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode - CURRENT-MODE CURRENT-MODE CURRENT-MODE
Control Technology - PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage - 5 V 5 V 5 V
Minimum input voltage - 2.7 V 2.7 V 2.7 V
JESD-30 code - S-PDSO-G10 S-PDSO-G10 S-PDSO-G10
JESD-609 code - e0 e3 e3
length - 3 mm 3 mm 3 mm
Humidity sensitivity level - 1 1 1
Number of functions - 1 1 1
Number of terminals - 10 10 10
Maximum operating temperature - 85 °C 85 °C 85 °C
Minimum operating temperature - -40 °C -40 °C -40 °C
Maximum output current - 1 A 1 A 1 A
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - TSSOP TSSOP TSSOP
Package shape - SQUARE SQUARE SQUARE
Package form - SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) - 235 260 260
Certification status - Not Qualified Not Qualified Not Qualified
Maximum seat height - 1.1 mm 1.1 mm 1.1 mm
surface mount - YES YES YES
Switch configuration - PUSH-PULL PUSH-PULL PUSH-PULL
Maximum switching frequency - 630 kHz 630 kHz 630 kHz
Temperature level - INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface - Tin/Lead (Sn/Pb) Matte Tin (Sn) Matte Tin (Sn)
Terminal form - GULL WING GULL WING GULL WING
Terminal pitch - 0.5 mm 0.5 mm 0.5 mm
Terminal location - DUAL DUAL DUAL
Maximum time at peak reflow temperature - 20 30 30
width - 3 mm 3 mm 3 mm
Base Number Matches - 1 1 1

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