EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC3736EGN-1

Description
DC/DC Cntrlr Dual-OUT Step Down 580kHz 24-Pin SSOP N
File Size442KB,28 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric Compare View All

LTC3736EGN-1 Overview

DC/DC Cntrlr Dual-OUT Step Down 580kHz 24-Pin SSOP N

LTC3736EGN-1 Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
SVHCYes
SVHC Exceeds ThresholdYes
Number of Outputs2
TopologyStep Down
Output Voltage (V)0.6 to 9.8
Maximum Switching Frequency (kHz)580
Minimum Input Voltage (V)2.75
Maximum Input Voltage (V)9.8
Operating Supply Voltage (V)2.75 to 9.8
Maximum Supply Current (mA)0.85
Control MethodPWM
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
Pin Count24
Standard Package NameSOP
Supplier PackageSSOP N
MountingSurface Mount
Package Height1.5(Max)
Package Length8.74(Max)
Package Width3.99(Max)
PCB changed24
Lead ShapeGull-wing
LTC3736-1
Dual 2-Phase, No R
SENSE
TM
,
Synchronous Controller with
Spread Spectrum
FEATURES
DESCRIPTIO
Spread Spectrum Operation
Tracking Function
No Current Sense Resistors Required
Out-of-Phase Controllers Reduce Required
Input Capacitance
Wide V
IN
Range: 2.75V to 9.8V
Current Mode Operation
0.6V
±1.5%
Voltage Reference
Low Dropout Operation: 100% Duty Cycle
Pulse Skipping Operation at Light Loads
Internal Soft-Start Circuitry
Power Good Output Voltage Monitor
Output Overvoltage Protection
Micropower Shutdown: I
Q
= 9µA
Tiny Low Profile (4mm
×
4mm) QFN and Narrow
SSOP Packages
The LTC
®
3736-1 is a 2-phase dual synchronous step-
down switching regulator controller with tracking that
drives external complementary power MOSFETs using
few external components. The constant frequency current
mode architecture with MOSFET V
DS
sensing eliminates
the need for sense resistors and improves efficiency.
Power loss and noise due to the ESR of the input capaci-
tance are minimized by operating the two controllers out
of phase.
A unique spread spectrum architecture randomly varies
the LTC3736-1’s switching frequency from 450kHz to
580kHz, significantly reducing the peak radiated and con-
ducted noise on both the input and output supplies,
making it easier to comply with electromagnetic interfer-
ence (EMI) standards.
Pulse skipping operation provides high efficiency at light
loads. 100% duty cycle capability provides low dropout op-
eration, extending operating time in battery-powered sys-
tems. The high switching frequencies allow for the use of
small surface mount inductors and capacitors.
The LTC3736-1 is available in the low profile (0.75mm)
24-pin thermally enhanced (4mm
×
4mm) QFN package
and 24-lead narrow SSOP packages.
APPLICATIO S
One or Two Lithium-Ion Powered Devices
Notebook and Palmtop Computers, PDAs
Portable Instruments
Distributed DC Power Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
No R
SENSE
is a trademark of Linear Technology Corporation.
Protected by U.S. Patents including 5481178, 5929620, 6144194, 6580258, 6304066,
6611131, 6498466.
TYPICAL APPLICATIO
Low Noise, 2-Phase, Dual Synchronous DC/DC Step-Down Converter
V
IN
2.75V TO 9.8V
V
IN
SENSE1
+
SENSE2
+
TG1
2.2µH
TG2
2.2µH
10µF
×2
–10
AMPLITUDE (dBm)
SW1
SW2
LTC3736-1
BG1
BG2
PGND
V
FB2
I
TH2
SGND
15k
220pF
15k
PGND
V
FB1
V
OUT1
2.5V
187k
118k
V
OUT2
1.8V
+
47µF
220pF
59k
I
TH1
+
47µF
59k
37361 TA01a
U
Output Voltage Frequency
Spectrum
FIGURE 13 CIRCUIT
SPREAD SPECTRUM
–20 V
OUT
= 2.5V
DISABLED
R
BW
= 30Hz
–30
SPREAD SPECTRUM
–40
ENABLED
–50
–60
–70
–80
–90
–100
–110
410k
450k
490k
530k
FREQUENCY (Hz)
570k
610k
37361 TA01b
U
U
37361f
1

LTC3736EGN-1 Related Products

LTC3736EGN-1 LTC3736EGN-1#PBF LTC3736EGN-1#TRPBF LTC3736EUF-1#PBF LTC3736EUF-1#TRPBF
Description DC/DC Cntrlr Dual-OUT Step Down 580kHz 24-Pin SSOP N DC/DC Cntrlr Dual-OUT Step Down 580kHz 24-Pin SSOP N Tube DC/DC Cntrlr Dual-OUT Step Down 580kHz 24-Pin SSOP N T/R DC/DC Cntrlr Dual-OUT Step Down 580kHz 24-Pin QFN EP Tube DC/DC Cntrlr Dual-OUT Step Down 580kHz 24-Pin QFN EP T/R
EU restricts the use of certain hazardous substances Not Compliant Compliant Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Unconfirmed Active Active Active Active
Number of Outputs 2 2 2 2 2
Topology Step Down Step Down Step Down Step Down Step Down
Output Voltage (V) 0.6 to 9.8 0.6 to 9.8 0.6 to 9.8 0.6 to 9.8 0.6 to 9.8
Maximum Switching Frequency (kHz) 580 580 580 580 580
Minimum Input Voltage (V) 2.75 2.75 2.75 2.75 2.75
Maximum Input Voltage (V) 9.8 9.8 9.8 9.8 9.8
Operating Supply Voltage (V) 2.75 to 9.8 2.75 to 9.8 2.75 to 9.8 2.75 to 9.8 2.75 to 9.8
Maximum Supply Current (mA) 0.85 0.85 0.85 0.85 0.85
Control Method PWM PWM PWM PWM PWM
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85 85 85
Supplier Temperature Grade Extended Extended Extended Extended Extended
Pin Count 24 24 24 24 24
Standard Package Name SOP SOP SOP QFN QFN
Supplier Package SSOP N SSOP N SSOP N QFN EP QFN EP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 1.5(Max) 1.5(Max) 1.5(Max) 0.75(Max) 0.75(Max)
Package Length 8.74(Max) 8.74(Max) 8.74(Max) 4 4
Package Width 3.99(Max) 3.99(Max) 3.99(Max) 4 4
PCB changed 24 24 24 24 24
Lead Shape Gull-wing Gull-wing Gull-wing No Lead No Lead
HTS - 8542.39.00.01 - 8542.39.00.01 8542.39.00.01
Packaging - Tube Tape and Reel Tube Tape and Reel
Deuterium lamp power supply
The preheating filament voltage of the deuterium lamp is about 6V higher, the trigger voltage is normal, but the constant current source cannot work properly, and the high voltage of 140V appears. Wha...
曦曦夏小暖 Power technology
Make a wireless router with a transmission distance of 3km
Do you think it is possible to achieve this level?...
gina RF/Wirelessly
【EEWORLD University Hall TI Classroom】The fifth batch of LaunchPad delivery list
Anyone who studies the EEWORLD University TI classroom courses carefully and participates in the "Learning Test" with an accuracy rate of 60% will receive a TI LaunchPad development board.Event detail...
EEWORLD社区 Microcontroller MCU
Urgent help?
All the calls from other people are transferred to my mobile phone. What should I do? And they seem to be calls from passenger transport. I received more than a dozen calls today. I am so annoyed....
shicong Talking
Unable to load program!
There is nothing wrong with the CMD file, it should be a 54x or 55x platform.By default, Page 1 is for IO space, you can also change the CMD file, only Page 0 is needed.The above phenomenon may also b...
jmhuanghb Analogue and Mixed Signal
A question inspired by a joke: I will not change, no matter how U change
[size=4][color=#8b0000]There is a joke on the Internet: [/color] [/size][size=4] This was originally just a joke, [color=#ff0000][b]but it led to a question, [b]Is there a problem with the statement “...
okhxyyo Power technology

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 241  983  2229  2703  894  5  20  45  55  18 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号