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Datasheet> All Categories > LTC3374IUHF#TRPBF
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LTC3374IUHF#TRPBF

Description
Conv DC-DC 2.7V to 5.5V Synchronous Step Down Single-Out 0.8V to 5.5V 1A Automotive 38-Pin QFN EP T/R
File Size405KB，26 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC3374IUHF#TRPBF Overview

Conv DC-DC 2.7V to 5.5V Synchronous Step Down Single-Out 0.8V to 5.5V 1A Automotive 38-Pin QFN EP T/R

LTC3374IUHF#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)1000 to 3000
Switching RegulatorYes
Number of Outputs8
Output Voltage (V)0.8 to 5.5
Maximum Output Current (A)1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1
Minimum Input Voltage (V)2.7
Maximum Input Voltage (V)5.5
Operating Supply Voltage (V)2.7 to 5.5
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
Supplier Temperature GradeIndustrial
PackagingTape and Reel
Pin Count38
Standard Package NameQFN
Supplier PackageQFN EP
MountingSurface Mount
Package Height0.75(Max)
Package Length7
Package Width5
PCB changed38
Lead ShapeNo Lead

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LTC3374
8-Channel Parallelable
1A Buck DC/DCs
FEATURES
n
n
DESCRIPTION
The
LTC
®
3374
is a high efficiency multioutput power sup-
ply IC. The DC/DCs consist of eight synchronous buck
converters (1A each) all powered from independent 2.25V
to 5.5V input supplies.
The DC/DCs may be used independently or in parallel to
achieve higher currents of up to 4A per output with a shared
inductor. The common buck switching frequency may be
programmed with an external resistor, synchronized to an
external oscillator, or set to a default internal 2MHz clock.
The operating mode for all DC/DCs may be programmed
via the MODE pin.
To reduce input noise the buck converters are phased in
90° steps. Precision enable pin thresholds provide reli-
able power-up sequencing. The LTC3374 is available in a
compact 38-lead 5mm
×
7mm QFN package as well as a
38-lead TSSOP package.
L,
LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
n
n
n
n
n
n
8-Channel Independent Step-Down DC/DCs
Master-Slave Configurable for Up to 4A per Output
Rail with a Single Inductor
Independent V
IN
Supplies for Each DC/DC
(2.25V to 5.5V)
All DC/DCs Have 0.8V to V
IN
Output Range
Precision Enable Pin Thresholds for Autonomous
Sequencing
1MHz to 3MHz Programmable/Synchronizable
Oscillator Frequency (2MHz Default)
Die Temperature Monitor Output
Thermally-Enhanced 38-Lead QFN (5mm
×
7mm)
and TSSOP Packages
APPLICATIONS
n
n
General Purpose Multichannel Power Supplies
Industrial/Automotive/Communications
TYPICAL APPLICATION
8-Channel 1A Multioutput Buck Regulator
2.7V TO 5.5V
V
CC
V
IN1
BUCK1
2.2µH
22µF
LTC3374
V
IN2
BUCK2
MASTER
2.2µH
0.8V TO V
IN1
UP TO 1A
Buck Efficiency vs I
LOAD
100
90
SLAVE
22µF
0.8V TO V
IN2
UP TO 1A
80
EFFICIENCY (%)
70
60
50
40
30
20
10
0
0
1A BUCK
2A BUCK
3A BUCK
4A BUCK
FORCED CONTINUOUS MODE
V
IN
= 3.3V, V
OUT
= 1.8V
f
OSC
= 1MHz, L = 3.3µH
2000
1000
3000
LOAD CURRENT (mA)
4000
3374 TA01b
EN1
EN2
EN3
EN4
V
IN7
EN5
BUCK7
EN6
EN7
EN8
PGOOD_ALL
TEMP
MODE
V
IN8
BUCK8
SYNC
RT
MASTER
2.2µH
•
•
•
SLAVE
10µF
0.8V TO V
IN7
UP TO 1A
MASTER
2.2µH
SLAVE
10µF
0.8V TO V
IN8
UP TO 1A
3374 TA01a
3374fc
For more information
www.linear.com/LTC3374
1

LTC3374IUHF#TRPBF Related Products

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Description Conv DC-DC 2.7V to 5.5V Synchronous Step Down Single-Out 0.8V to 5.5V 1A Automotive 38-Pin QFN EP T/R Conv DC-DC 2.7V to 5.5V Synchronous Step Down Single-Out 0.8V to 5.5V 1A Automotive 38-Pin TSSOP EP Tube Conv DC-DC 2.7V to 5.5V Synchronous Step Down Single-Out 0.8V to 5.5V 1A Automotive 38-Pin TSSOP EP T/R Conv DC-DC 2.7V to 5.5V Synchronous Step Down Octal-Out 0.8V to 5.5V 1A/1A/1A/1A/1A/1A/1A/1A Automotive 38-Pin QFN EP Tube Conv DC-DC 2.7V to 5.5V Synchronous Step Down Single-Out 0.8V to 5.5V 1A Automotive 38-Pin QFN EP T/R Conv DC-DC 2.7V to 5.5V Synchronous Step Down Single-Out 0.8V to 5.5V 1A Automotive 38-Pin TSSOP EP Tube Conv DC-DC 2.7V to 5.5V Synchronous Step Down Single-Out 0.8V to 5.5V 1A Automotive 38-Pin TSSOP EP T/R Conv DC-DC 2.7V to 5.5V Synchronous Step Down Single-Out 0.8V to 5.5V 1A Automotive 38-Pin QFN EP Tube
EU restricts the use of certain hazardous substances Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Active Active Active Active Active Active Active Active
Type Synchronous Step Down Synchronous Step Down 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 Adjustable Adjustable
Switching Frequency (kHz) 1000 to 3000 1000 to 3000 1000 to 3000 1000 to 3000 1000 to 3000 1000 to 3000 1000 to 3000 1000 to 3000
Switching Regulator Yes Yes Yes Yes Yes Yes Yes Yes
Number of Outputs 8 8 8 8 8 8 8 8
Output Voltage (V) 0.8 to 5.5 0.8 to 5.5 0.8 to 5.5 0.8 to 5.5 0.8 to 5.5 0.8 to 5.5 0.8 to 5.5 0.8 to 5.5
Maximum Output Current (A) 1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1 1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1 1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1 1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1 1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1 1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1 1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1 1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1|1
Minimum Input Voltage (V) 2.7 2.7 2.7 2.7 2.7 2.7 2.7 2.7
Maximum Input Voltage (V) 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5
Operating Supply Voltage (V) 2.7 to 5.5 2.7 to 5.5 2.7 to 5.5 2.7 to 5.5 2.7 to 5.5 2.7 to 5.5 2.7 to 5.5 2.7 to 5.5
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 125 125 125 125 125 125 125 125
Supplier Temperature Grade Industrial Extended Extended Extended Extended Industrial Industrial Industrial
Packaging Tape and Reel Tube Tape and Reel Tube Tape and Reel Tube Tape and Reel Tube
Pin Count 38 38 38 38 38 38 38 38
Standard Package Name QFN SOP SOP QFN QFN SOP SOP QFN
Supplier Package QFN EP TSSOP EP TSSOP EP QFN EP QFN EP TSSOP EP TSSOP EP QFN EP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 1.05(Max) 1.05(Max) 0.75(Max) 0.75(Max) 1.05(Max) 1.05(Max) 0.75(Max)
Package Length 7 9.8(Max) 9.8(Max) 7 7 9.8(Max) 9.8(Max) 7
Package Width 5 4.5(Max) 4.5(Max) 5 5 4.5(Max) 4.5(Max) 5
PCB changed 38 38 38 38 38 38 38 38
Lead Shape No Lead Gull-wing Gull-wing No Lead No Lead Gull-wing Gull-wing No Lead
HTS 8542.39.00.01 8542.39.00.01 - 8542.39.00.01 8542.39.00.01 - 8542.39.00.01 -

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