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LTC3407EMSE-4#TRPBF

Description
Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5V 0.8A/0.8A 10-Pin MSOP EP T/R
File Size265KB，16 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC3407EMSE-4#TRPBF Overview

Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5V 0.8A/0.8A 10-Pin MSOP EP T/R

LTC3407EMSE-4#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeSynchronous Step Down
Output TypeAdjustable
Switching Frequency (kHz)2700
Switching RegulatorYes
Number of Outputs2
Output Voltage (V)0.6 to 5
Maximum Output Current (A)0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8
Minimum Input Voltage (V)2.5
Maximum Input Voltage (V)5.5
Operating Supply Voltage (V)2.5 to 5.5
Typical Quiescent Current (uA)40
Line Regulation0.5%/V
Load Regulation0.5%(Typ)
Efficiency (%)95
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTape and Reel
Pin Count10
Standard Package NameSOP
Supplier PackageMSOP EP
MountingSurface Mount
Package Height0.86
Package Length3
Package Width3
PCB changed10
Lead ShapeGull-wing

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FEATURES
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LTC3407-4
Dual Synchronous, 800mA,
2.25MHz Step-Down
DC/DC Regulator
DESCRIPTION
The LTC
®
3407-4 is a dual, constant frequency, synchro-
nous step down DC/DC converter. Intended for low power
applications, it operates from 2.5V to 5.5V input voltage
range and has a constant 2.25MHz switching frequency,
allowing the use of tiny, low cost capacitors and induc-
tors with a profile ≤1mm. Each output voltage is adjust-
able from 0.6V to 5V. 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.
The LTC3407-4 is identical to the LTC3407-2 except for
the reduced power-on reset delay time.
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.
High Efficiency: Up to 95%
Very Low Quiescent Current: Only 40μA
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
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
Small Thermally Enhanced MSOP and 3mm
×
3mm
DFN Packages
APPLICATIONS
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PDAs/Palmtop PCs
Digital Cameras
Cellular Phones
Portable Media Players
PC Cards
Wireless and DSL Modems
TYPICAL APPLICATION
V
IN
*
2.5V TO 5.5V
LTC3407-4 Efficiency/Power Loss Curve
C1
10μF
L2
2.2μH
SW2
C5, 22pF
RUN2
V
IN
RUN1
POR
L1
2.2μH
SW1
C4, 22pF
R5
100k
RESET
EFFICIENCY (%)
V
OUT1
1.8V
800mA
100
90
80
70
60
50
40
30
C2
10μF
20
10
0.01
0.1
POWER LOSS (W)
1
MODE/SYNC
V
OUT2
2.5V
800mA
LTC3407-4
C3
10μF
R4
887k
V
FB2
R3
280k
GND
V
FB1
R2
R1 604k
301k
0.001
C1, C2, C3: TAIYO YUDEN JMK316BJ106ML
L1, L2: MURATA LQH32CN2R2M33
*V
OUT
CONNECTED TO V
IN
FOR V
IN
≤
2.8V
3407 TA01
0
0.1
1
10
100
LOAD CURRENT (mA)
0.0001
1000
34074 TA02
Figure 1. 2.5V/1.8V at 800mA Step-Down Regulators
34074fa
1

LTC3407EMSE-4#TRPBF Related Products

LTC3407EMSE-4#TRPBF LTC3407EDD-4#PBF LTC3407EDD-4#TRPBF LTC3407EMSE-4#PBF LTC3407EMSE-4#TR LTC3407EMSE-4
Description Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5V 0.8A/0.8A 10-Pin MSOP EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5V 0.8A/0.8A 10-Pin DFN EP Tube Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5V 0.8A/0.8A 10-Pin DFN EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5V 0.8A/0.8A 10-Pin MSOP EP Tube Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5V 0.8A/0.8A 10-Pin MSOP EP T/R Conv DC-DC 2.5V to 5.5V Synchronous Step Down Dual-Out 0.6V to 5V 0.8A/0.8A 10-Pin MSOP EP
EU restricts the use of certain hazardous substances Compliant Compliant Compliant Compliant Not Compliant Not Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Active Active Active Active Unconfirmed Unconfirmed
Type Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down Synchronous Step Down
Output Type Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable
Switching Frequency (kHz) 2700 2700 2700 2700 2700 2700
Switching Regulator Yes Yes Yes Yes Yes Yes
Number of Outputs 2 2 2 2 2 2
Output Voltage (V) 0.6 to 5 0.6 to 5 0.6 to 5 0.6 to 5 0.6 to 5 0.6 to 5
Maximum Output Current (A) 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8
Minimum Input Voltage (V) 2.5 2.5 2.5 2.5 2.5 2.5
Maximum Input Voltage (V) 5.5 5.5 5.5 5.5 5.5 5.5
Operating Supply Voltage (V) 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5 2.5 to 5.5
Typical Quiescent Current (uA) 40 40 40 40 40 40
Line Regulation 0.5%/V 0.5%/V 0.5%/V 0.5%/V 0.5%/V 0.5%/V
Load Regulation 0.5%(Typ) 0.5%(Typ) 0.5%(Typ) 0.5%(Typ) 0.5%(Typ) 0.5%(Typ)
Efficiency (%) 95 95 95 95 95 95
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85 85 85 85
Supplier Temperature Grade Extended Extended Extended Extended Extended Extended
Pin Count 10 10 10 10 10 10
Standard Package Name SOP DFN DFN SOP SOP SOP
Supplier Package MSOP EP DFN EP DFN EP MSOP EP MSOP EP MSOP EP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.86 0.75(Max) 0.75(Max) 0.86 0.86 0.86
Package Length 3 3 3 3 3 3
Package Width 3 3 3 3 3 3
PCB changed 10 10 10 10 10 10
Lead Shape Gull-wing No Lead No Lead Gull-wing Gull-wing Gull-wing
Packaging Tape and Reel Tube Tape and Reel Tube Tape and Reel -

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