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LTC3805EDD-5#TRMPBF

Description
IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10, Switching Regulator or Controller
CategoryPower/power management    The power supply circuit   
File Size203KB,20 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance  
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LTC3805EDD-5#TRMPBF Overview

IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10, Switching Regulator or Controller

LTC3805EDD-5#TRMPBF Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeSON
package instructionHVSON, SOLCC10,.12,20
Contacts10
Reach Compliance Codecompliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Maximum input voltage8.9 V
Minimum input voltage4.15 V
Nominal input voltage5 V
JESD-30 codeS-PDSO-N10
JESD-609 codee3
length3 mm
Humidity sensitivity level1
Number of functions1
Number of terminals10
Maximum operating temperature85 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeHVSON
Encapsulate equivalent codeSOLCC10,.12,20
Package shapeSQUARE
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height0.8 mm
surface mountYES
Switch configurationSINGLE
Maximum switching frequency700 kHz
technologyCMOS
Temperature levelOTHER
Terminal surfaceMatte Tin (Sn)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3 mm
LTC3805-5
Adjustable Frequency
Current Mode Flyback/
Boost/SEPIC DC/DC Controller
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
DESCRIPTION
The LTC
®
3805-5 is a current mode DC/DC controller de-
signed to drive an N-channel MOSFET in flyback, boost
and SEPIC converter applications. Operating frequency
and slope compensation can be programmed by external
resistors. Programmable overcurrent sensing protects
the converter from overload and short-circuit conditions.
Soft-start can be programmed using an external capacitor
and the soft-start capacitor also programs an automatic
restart feature.
The LTC3805-5 provides ±1.5% output voltage accuracy
and consumes only 360μA of quiescent current during
normal operation and only 40μA during micropower start-
up. Using a 9.5V internal shunt regulator, the LTC3805-5
can be powered from a high V
IN
through a resistor or it
can be powered directly from a low impedance DC voltage
from 4.7V to 8.8V.
The LTC3805-5 is available in the 10-lead MSOP package
and the 3mm
×
3mm DFN package.
L,
LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
V
IN
and V
OUT
Limited Only by External Components
4.5V Undervoltage Lockout Threshold
Adjustable Slope Compensation
Adjustable Overcurrent Protection With Automatic
Restart
Adjustable Operating Frequency (70kHz to 700kHz)
With One External Resistor
Synchronizable to an External Clock
±1.5% Reference Accuracy
Only 100mV Current Sense Voltage Drop
RUN Pin With Precision Threshold and Adjustable
Hysteresis
Programmable Soft-Start With One External Capacitor
Low Quiescent Current: 360μA
Small 10-Lead MSOP and 3mm
×
3mm DFN
APPLICATIONS
n
n
n
n
n
Automotive Power Supplies
Telecom Power Supplies
Isolated Electronic Equipment
Auxiliary/Housekeeping Power Supplies
Power over Ethernet
TYPICAL APPLICATION
Efficiency and Power Loss vs Load Current
5V to 12V/1A Boost Converter
4.3μH
V
IN
5V
22μF
×2
RUN
I
TH
20k
470pF
0.1μF
118k
SSFLT
FS
SYNC
GND
UPS840
V
OUT
12V
1A
EFFICIENCY (%)
100
2.5
95
V
CC
GATE
LTC3805-5
OC
I
SENSE
FB
3k
191k
1.33k
100μF
5V EFFICIENCY
8.5V EFFICIENCY
2.0
POWER LOSS (W)
90
8.5V LOSS
85
5V LOSS
1.5
1
80
8mΩ
13.7k
38055 TA01
0.5
75
0.01
1
0.1
LOAD CURRENT (A)
10
38055TA01b
0
38055fb
1

LTC3805EDD-5#TRMPBF Related Products

LTC3805EDD-5#TRMPBF LTC3805EMSE-5#TRMPBF LTC3805HMSE-5#TRMPBF LTC3805IDD-5#TRMPBF LTC3805IMSE-5#TRMPBF
Description IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10, Switching Regulator or Controller IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, LEAD FREE, PLASTIC, MSOP-10, Switching Regulator or Controller IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, LEAD FREE, PLASTIC, MSOP-10, Switching Regulator or Controller IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10, Switching Regulator or Controller IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, LEAD FREE, PLASTIC, MSOP-10, Switching Regulator or Controller
Is it lead-free? Lead free Lead free Lead free Lead free Lead free
Is it Rohs certified? conform to conform to conform to conform to conform to
Maker Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code SON MSOP MSOP SON MSOP
package instruction HVSON, SOLCC10,.12,20 HTSSOP, TSSOP10,.19,20 HTSSOP, TSSOP10,.19,20 HVSON, SOLCC10,.12,20 HTSSOP, TSSOP10,.19,20
Contacts 10 10 10 10 10
Reach Compliance Code compliant compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
Maximum input voltage 8.9 V 8.9 V 8.9 V 8.9 V 8.9 V
Minimum input voltage 4.15 V 4.15 V 4.15 V 4.15 V 4.15 V
Nominal input voltage 5 V 5 V 5 V 5 V 5 V
JESD-30 code S-PDSO-N10 S-PDSO-G10 S-PDSO-G10 S-PDSO-N10 S-PDSO-G10
JESD-609 code e3 e3 e3 e3 e3
length 3 mm 3 mm 3 mm 3 mm 3 mm
Humidity sensitivity level 1 1 1 1 1
Number of functions 1 1 1 1 1
Number of terminals 10 10 10 10 10
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code HVSON HTSSOP HTSSOP HVSON HTSSOP
Encapsulate equivalent code SOLCC10,.12,20 TSSOP10,.19,20 TSSOP10,.19,20 SOLCC10,.12,20 TSSOP10,.19,20
Package shape SQUARE SQUARE SQUARE SQUARE SQUARE
Package form SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 260 260 260 250 250
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 0.8 mm 1.1 mm 1.1 mm 0.8 mm 1.1 mm
surface mount YES YES YES YES YES
Switch configuration SINGLE SINGLE SINGLE SINGLE SINGLE
Maximum switching frequency 700 kHz 700 kHz 700 kHz 700 kHz 700 kHz
technology CMOS CMOS CMOS CMOS CMOS
Terminal surface Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form NO LEAD GULL WING GULL WING NO LEAD GULL WING
Terminal pitch 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm
Terminal location DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 30 30 NOT SPECIFIED NOT SPECIFIED
width 3 mm 3 mm 3 mm 3 mm 3 mm
Maximum operating temperature 85 °C 85 °C - 125 °C 125 °C
Temperature level OTHER OTHER - AUTOMOTIVE AUTOMOTIVE
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