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LTC3427EDC#TRM

Description
LTC3427 - 500mA, 1.25MHz Synchronous Step-Up DC/DC Converter in 2mm x 2mm DFN Package; Package: DFN; Pins: 6; Temperature Range: -40°C to 85°C
CategoryPower/power management    The power supply circuit   
File Size186KB,12 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC3427EDC#TRM Overview

LTC3427 - 500mA, 1.25MHz Synchronous Step-Up DC/DC Converter in 2mm x 2mm DFN Package; Package: DFN; Pins: 6; Temperature Range: -40°C to 85°C

LTC3427EDC#TRM Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeDFN
package instructionHVSON,
Contacts6
Manufacturer packaging codeDC6
Reach Compliance Codenot_compliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage5 V
Minimum input voltage1.8 V
Nominal input voltage2.4 V
JESD-30 codeS-PDSO-N6
JESD-609 codee0
length2 mm
Humidity sensitivity level1
Number of functions1
Number of terminals6
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current0.5 A
Package body materialPLASTIC/EPOXY
encapsulated codeHVSON
Package shapeSQUARE
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height0.8 mm
surface mountYES
Switch configurationBOOST
Maximum switching frequency1500 kHz
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width2 mm
LTC3427
500mA, 1.25MHz
Synchronous Step-Up
DC/DC Converter in
2mm
×
2mm DFN Package
FEATURES
DESCRIPTIO
High Efficiency: Up to 94%
3.3V at 200mA from Two Alkaline Cells
5V at 200mA from a Single Li-Ion Cell
Inrush Current Limiting and Soft-Start
Output Disconnect in Shutdown
1.8V to 5V V
IN
Range
1.8V to 5.25V V
OUT
Range
1.25MHz Fixed Frequency, Low Noise PWM
Internal Synchronous Rectifier
Logic Controlled Shutdown (<1µA)
Anti-Ringing Control Minimizes EMI
Tiny External Components
Short-Circuit Protection
Low Profile (0.75mm
×
2mm
×
2mm) DFN Package
The LTC
®
3427 is the industry’s first high efficiency, fixed
frequency, step-up DC/DC converter with true output
disconnect in a 6-lead 2mm
×
2mm DFN package. Requir-
ing minimal external components, the LTC3427 operates
from an input voltage as low as 1.8V. The LTC3427
contains an internal 0.525Ω N-channel MOSFET switch
and a 0.575Ω P-channel MOSFET synchronous rectifier,
which enables it to supply 200mA at 3.3V from a 2-cell
alkaline battery input.
The LTC3427 limits inrush current during start-up and
provides a soft-start of V
OUT
. A switching frequency of
1.25MHz minimizes solution footprint by allowing the use
of tiny, low profile inductors and ceramic capacitors and
produces very low V
OUT
ripple. The current mode PWM
design is internally compensated, reducing external parts
count. Anti-ringing control reduces EMI in discontinuous
mode operation. The LTC3427 also features low shut-
down current of under 1µA and thermal shutdown.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIO S
Handheld Instruments
Digital Cameras
Wireless Handsets
GPS Receivers
Portable Medical Devices
MP3 Players
TYPICAL APPLICATIO
V
IN
1.8V TO 3.2V
2-CELL
ALKALINE
2.4V to 3.3V Efficiency
100
95
EFFICIENCY
POWER LOSS (mW)
EFFICIENCY (%)
2-Cell Alkaline to 3.3V Synchronous Boost Converter
4.7µH
+
2.2µF
V
IN
LTC3427
OFF ON
SHDN
V
OUT
1000k
GND
FB
604k
SW
V
OUT
3.3V
200mA
4.7µF
90
85
80
POWER LOSS
75
70
10
1000
3427 TA01b
3427 TA01a
10
U
1000
100
100
LOAD CURRENT (mA)
3427fa
U
U
1

LTC3427EDC#TRM Related Products

LTC3427EDC#TRM LTC3427EDC#TR
Description LTC3427 - 500mA, 1.25MHz Synchronous Step-Up DC/DC Converter in 2mm x 2mm DFN Package; Package: DFN; Pins: 6; Temperature Range: -40°C to 85°C LTC3427 - 500mA, 1.25MHz Synchronous Step-Up DC/DC Converter in 2mm x 2mm DFN Package; Package: DFN; Pins: 6; Temperature Range: -40°C to 85°C
Brand Name Linear Technology Linear Technology
Is it Rohs certified? incompatible incompatible
Maker Linear ( ADI ) Linear ( ADI )
Parts packaging code DFN DFN
package instruction HVSON, HVSON, SOLCC6,.08,20
Contacts 6 6
Manufacturer packaging code DC6 DC6
Reach Compliance Code not_compliant not_compliant
ECCN code EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING REGULATOR SWITCHING REGULATOR
control mode CURRENT-MODE CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage 5 V 5 V
Minimum input voltage 1.8 V 1.8 V
Nominal input voltage 2.4 V 2.4 V
JESD-30 code S-PDSO-N6 S-PDSO-N6
JESD-609 code e0 e0
length 2 mm 2 mm
Humidity sensitivity level 1 1
Number of functions 1 1
Number of terminals 6 6
Maximum operating temperature 70 °C 70 °C
Maximum output current 0.5 A 0.5 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code HVSON HVSON
Package shape SQUARE SQUARE
Package form SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) 235 235
Certification status Not Qualified Not Qualified
Maximum seat height 0.8 mm 0.8 mm
surface mount YES YES
Switch configuration BOOST BOOST
Maximum switching frequency 1500 kHz 1500 kHz
Temperature level COMMERCIAL COMMERCIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form NO LEAD NO LEAD
Terminal pitch 0.5 mm 0.5 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature 20 20
width 2 mm 2 mm
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