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LTC3407AEDD-2#TR

Description
LTC3407A-2 - Dual Synchronous 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C
CategoryPower/power management    The power supply circuit   
File Size253KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC3407AEDD-2#TR Overview

LTC3407A-2 - Dual Synchronous 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C

LTC3407AEDD-2#TR Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeDFN
package instructionHVSON, SOLCC10,.12,20
Contacts10
Manufacturer packaging codeDD
Reach Compliance Codenot_compliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesDUAL SWITCHING CONTROLLER
control modeCURRENT-MODE
Maximum input voltage5.5 V
Minimum input voltage2.5 V
Nominal input voltage3.6 V
JESD-30 codeS-PDSO-N10
JESD-609 codee0
length3 mm
Humidity sensitivity level1
Number of functions2
Number of terminals10
Maximum operating temperature85 °C
Minimum operating temperature
Maximum output current1.6 A
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)235
Certification statusNot Qualified
Maximum seat height0.8 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency2700 kHz
technologyCMOS
Temperature levelOTHER
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width3 mm
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
LTC3407-3
Dual Synchronous,
1.8V/0.8A and 3.3V/0.8A
2.25MHz Step-Down DC/DC Regulator
DESCRIPTION
The LTC
®
3407-3 is a dual, constant frequency, synchro-
nous step down DC/DC converter. Intended for low power
applications, it operates from 3.3V to 5.5V input voltage
range and has a constant 2.25MHz switching frequency,
allowing the use of tiny, low cost capacitors and inductors
with a profile ≤1.0mm. Internal synchronous 0.35Ω, 1.2A
power switches provide high efficiency without the need
for external Schottky diodes.
A user selectable mode input is provided to allow the user
to trade-off noise ripple for low power efficiency. Burst
Mode
®
operation provides high efficiency at light loads,
while pulse-skipping mode provides low noise ripple at
light loads.
To further maximize battery life, the P-channel MOSFETs
are turned on continuously in dropout (100% duty cycle),
and both channels draw a total quiescent current of only
40μA. In shutdown, the device draws <1μA.
L,
LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners. Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466,
6611131.
Very Low Quiescent Current: Only 40μA
1.8V at 800mA/3.3V at 800mA
High Efficiency: Up to 95%
2.25MHz Constant Frequency Operation
High Switch Current: 1.2A on Each Channel
No Schottky Diodes Required
Low R
DS(ON)
Internal Switches: 0.35Ω
V
IN
: 3.3V to 5.5V
Current Mode Operation for Excellent Line
and Load Transient Response
Short-Circuit Protected
Low Dropout Operation: 100% Duty Cycle
Ultralow Shutdown Current: I
Q
< 1μA
Power-On Reset Output
Externally Synchronizable Oscillator
Small Thermally Enhanced 3mm
×
3mm DFN Package
APPLICATIONS
n
n
n
n
n
n
PDAs/Palmtop PCs
Digital Cameras
Cellular Phones
Portable Media Players
PC Cards
Wireless and DSL Modems
TYPICAL APPLICATION
LTC3407-3 Efficiency/Power Loss
100
V
IN
3.3V TO 5.5V
10μF
RUN2
V
IN
RUN1
POR
SW1
V
OUT1
GND
MODE/SYNC
V
OUT2
3.3V
2.2μH
SW2
10μF
V
OUT2
LTC3407-3
100k
EFFICIENCY (%)
RESET
2.2μH
V
OUT1
1.8V
10μF
34073 TA01
1
V
OUT
= 3.3V
V
OUT
= 1.8V
90
80
70
60
50
40
30
20
10
1
0.1
POWER LOSS (W)
V
OUT
= 3.3V
V
OUT
= 1.8V
0.01
0.001
V
IN
= 5V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
10
100
LOAD CURRENT (mA)
NOTE: IN DROPOUT, THE OUTPUT TRACKS THE INPUT VOLTAGE
Figure 1. 1.8V/3.3V at 800mA Step-Down Regulators
0.000
1000
34073 TA01b
34073fb
1

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Description LTC3407A-2 - Dual Synchronous 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C LTC3407A-2 - Dual Synchronous 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: MSOP; Pins: 10; Temperature Range: -40°C to 85°C LTC3407A-2 - Dual Synchronous 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C LTC3407A-2 - Dual Synchronous 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: MSOP; Pins: 10; Temperature Range: -40°C to 85°C LTC3407-2 - Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C LTC3407-3 - Dual Synchronous, 1.8V/0.8A and 3.3V/0.8A 2.25MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C LTC3407-2 - Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: MSOP; Pins: 10; Temperature Range: -40°C to 85°C LTC3407-4 - Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C LTC3407-4 - Dual Synchronous, 800mA, 2.25MHz Step-Down DC/DC Regulator; Package: MSOP; Pins: 10; Temperature Range: -40°C to 85°C
Brand Name Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology
Is it Rohs certified? incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible
Maker Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code DFN MSOP DFN MSOP DFN DFN MSOP DFN MSOP
package instruction HVSON, SOLCC10,.12,20 HTSSOP, TSSOP10,.19,20 HVSON, SOLCC10,.12,20 HTSSOP, TSSOP10,.19,20 HVSON, SOLCC10,.12,20 HVSON, SOLCC10,.12,20 HTSSOP, TSSOP10,.19,20 HVSON, SOLCC10,.12,20 HTSSOP, TSSOP10,.19,20
Contacts 10 10 10 10 10 10 10 10 10
Manufacturer packaging code DD MSE DD MSE DD DD MSE DD MSE
Reach Compliance Code not_compliant not_compliant not_compliant not_compliant not_compliant not_compliant not_compliant not_compliant not_compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
Maximum input voltage 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V
Minimum input voltage 2.5 V 2.5 V 2.5 V 2.5 V 2.5 V 3.3 V 2.5 V 2.5 V 2.5 V
Nominal input voltage 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V
JESD-30 code S-PDSO-N10 S-PDSO-G10 S-PDSO-N10 S-PDSO-G10 S-PDSO-N10 S-PDSO-N10 S-PDSO-G10 S-PDSO-N10 S-PDSO-G10
JESD-609 code e0 e0 e0 e0 e0 e0 e0 e0 e0
length 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm
Humidity sensitivity level 1 1 1 1 1 1 1 1 1
Number of functions 2 2 2 2 1 1 1 1 1
Number of terminals 10 10 10 10 10 10 10 10 10
Maximum operating temperature 85 °C 85 °C 125 °C 125 °C 85 °C 85 °C 85 °C 85 °C 85 °C
Maximum output current 1.6 A 1.6 A 1.6 A 1.6 A 1.6 A 1.6 A 1.6 A 1.6 A 1.6 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code HVSON HTSSOP HVSON HTSSOP HVSON HVSON HTSSOP HVSON HTSSOP
Encapsulate equivalent code SOLCC10,.12,20 TSSOP10,.19,20 SOLCC10,.12,20 TSSOP10,.19,20 SOLCC10,.12,20 SOLCC10,.12,20 TSSOP10,.19,20 SOLCC10,.12,20 TSSOP10,.19,20
Package shape SQUARE SQUARE SQUARE SQUARE 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, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE 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) 235 235 235 235 255 235 235 235 235
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 0.8 mm 1.1 mm 0.8 mm 1.1 mm 0.8 mm 0.8 mm 1.1 mm 0.8 mm 1.1 mm
surface mount YES YES YES YES YES YES YES YES YES
Switch configuration BUCK BUCK BUCK BUCK BUCK BUCK BUCK BUCK BUCK
Maximum switching frequency 2700 kHz 2700 kHz 2700 kHz 2700 kHz 2700 kHz 2700 kHz 2700 kHz 2700 kHz 2700 kHz
technology CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level OTHER OTHER AUTOMOTIVE AUTOMOTIVE INDUSTRIAL COMMERCIAL EXTENDED INDUSTRIAL COMMERCIAL EXTENDED COMMERCIAL EXTENDED
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form NO LEAD GULL WING NO LEAD GULL WING NO LEAD NO LEAD GULL WING NO LEAD GULL WING
Terminal pitch 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm 0.5 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 20 20 20 20 40 20 20 20 20
width 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm
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