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LTC3407AEMSE

Description
IC 1.25 A DUAL SWITCHING CONTROLLER, 1800 kHz SWITCHING FREQ-MAX, PDSO10, PLASTIC, MSOP-10, Switching Regulator or Controller
CategoryPower/power management    The power supply circuit   
File Size263KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC3407AEMSE Overview

IC 1.25 A DUAL SWITCHING CONTROLLER, 1800 kHz SWITCHING FREQ-MAX, PDSO10, PLASTIC, MSOP-10, Switching Regulator or Controller

LTC3407AEMSE Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeMSOP
package instructionHTSSOP, TSSOP10,.19,20
Contacts10
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-G10
JESD-609 codee0
length3 mm
Humidity sensitivity level1
Number of functions1
Number of terminals10
Maximum operating temperature85 °C
Minimum operating temperature
Maximum output current1.25 A
Package body materialPLASTIC/EPOXY
encapsulated codeHTSSOP
Encapsulate equivalent codeTSSOP10,.19,20
Package shapeSQUARE
Package formSMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height1.1 mm
surface mountYES
Switch configurationBUCK
Maximum switching frequency1800 kHz
technologyCMOS
Temperature levelCOMMERCIAL EXTENDED
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width3 mm
LTC3407A
Dual Synchronous 600mA,
1.5MHz Step-Down
DC/DC Regulator
FEATURES
DESCRIPTIO
High Efficiency: Up to 96%
Low Ripple (35mV
PK-PK
) Burst Mode Operation;
I
Q
= 40µA
1.5MHz Constant Frequency Operation
No Schottky Diodes Required
Low R
DS(ON)
Internal Switches: 0.35Ω
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
Output Voltages from 5V down to 0.6V
Power-On Reset Output
Externally Synchronizable Oscillator
Optional External Soft-Start
Small Thermally Enhanced MSOP and 3mm
×
3mm
DFN Packages
The LTC
®
3407A is a dual, constant frequency, synchro-
nous step-down DC/DC converter. Intended for low power
applications, it operates from a 2.5V to 5.5V input voltage
range and has a constant 1.5MHz switching frequency,
enabling the use of tiny, low cost capacitors and inductors
1mm or less in height. Each output voltage is adjustable
from 0.6V to 5V. Internal synchronous 0.35Ω, 1A 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 ripple noise for low power efficiency. Burst
Mode
®
operation provides the highest efficiency at light
loads, while Pulse Skip Mode provides the lowest ripple
noise 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.
, LT, LTC, LTM and Burst Mode 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.
APPLICATIO S
PDAs/Palmtop PCs
Digital Cameras
Cellular Phones
Wireless and DSL Modems
TYPICAL APPLICATIO
V
IN
= 2.5V
TO 5.5V
10µF
1mm High 2.5V/1.8V at 600mA Step-Down Regulators
LTC3407A Efficiency/Power Loss Curve
100
90
2.5V
1.8V
0.1
1
RUN/SS2
MODE/SYNC
V
IN
RUN/SS1
POR
100k
RESET
EFFICIENCY (%)
LTC3407A
V
OUT2
= 2.5V
AT 600mA
2.2µH
SW2
22pF
SW1
22pF
2.2µH
V
OUT1
= 1.8V
AT 600mA
887k
10µF
280k
V
FB2
GND
V
FB1
887k
442k
10µF
3407A TA01
U
80
70
60
50
40
30
20
10
0
1
10
100
LOAD CURRENT (mA)
V
IN
= 3.3V
Burst Mode OPERATION
NO LOAD ON OTHER CHANNEL
0.0001
1000
3407A TA02
U
U
POWER LOSS (W)
0.01
0.001
3407af
1

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Description IC 1.25 A DUAL SWITCHING CONTROLLER, 1800 kHz SWITCHING FREQ-MAX, PDSO10, PLASTIC, MSOP-10, Switching Regulator or Controller IC 1.25 A DUAL SWITCHING CONTROLLER, 1800 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, PLASTIC, MO-229WEED-2, DFN-10, Switching Regulator or Controller IC 1.25 A DUAL SWITCHING CONTROLLER, 1800 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, PLASTIC, MO-229WEED-2, DFN-10, Switching Regulator or Controller IC 1.25 A DUAL SWITCHING CONTROLLER, 1800 kHz SWITCHING FREQ-MAX, PDSO10, PLASTIC, MSOP-10, Switching Regulator or Controller
Is it lead-free? Contains lead Contains lead Contains lead Contains lead
Is it Rohs certified? incompatible incompatible incompatible incompatible
Parts packaging code MSOP SON SON MSOP
package instruction HTSSOP, TSSOP10,.19,20 HVSON, SOLCC10,.12,20 HVSON, SOLCC10,.12,20 HTSSOP, TSSOP10,.19,20
Contacts 10 10 10 10
Reach Compliance Code not_compliant not_compliant not_compliant not_compliant
ECCN code EAR99 EAR99 EAR99 EAR99
Analog Integrated Circuits - Other Types DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
Maximum input voltage 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
Nominal input voltage 3.6 V 3.6 V 3.6 V 3.6 V
JESD-30 code S-PDSO-G10 S-PDSO-N10 S-PDSO-N10 S-PDSO-G10
JESD-609 code e0 e0 e0 e0
length 3 mm 3 mm 3 mm 3 mm
Humidity sensitivity level 1 1 1 1
Number of functions 1 1 1 1
Number of terminals 10 10 10 10
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C
Maximum output current 1.25 A 1.25 A 1.25 A 1.25 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code HTSSOP HVSON HVSON HTSSOP
Encapsulate equivalent code TSSOP10,.19,20 SOLCC10,.12,20 SOLCC10,.12,20 TSSOP10,.19,20
Package shape SQUARE SQUARE SQUARE SQUARE
Package form 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
Peak Reflow Temperature (Celsius) 235 235 235 235
Certification status Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.1 mm 0.8 mm 0.8 mm 1.1 mm
surface mount YES YES YES YES
Switch configuration BUCK BUCK BUCK BUCK
Maximum switching frequency 1800 kHz 1800 kHz 1800 kHz 1800 kHz
technology CMOS CMOS CMOS CMOS
Temperature level COMMERCIAL EXTENDED COMMERCIAL EXTENDED COMMERCIAL EXTENDED COMMERCIAL EXTENDED
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING NO LEAD NO LEAD GULL WING
Terminal pitch 0.5 mm 0.5 mm 0.5 mm 0.5 mm
Terminal location DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 20 20 20 20
width 3 mm 3 mm 3 mm 3 mm
Maker Linear ( ADI ) - Linear ( ADI ) Linear ( ADI )
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