EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC3705EGN#TR

Description
Switching Voltage Regulators LTC3705 - 2-Switch Forward Controller and Gate Driver
Categorysemiconductor    Power management   
File Size269KB,20 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC3705EGN#TR Overview

Switching Voltage Regulators LTC3705 - 2-Switch Forward Controller and Gate Driver

LTC3705EGN#TR Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerADI
Product CategorySwitching Voltage Regulators
RoHSNo -; RoHS Version Available
Mounting StyleSMD/SMT
Package / CaseSSOP-16
Number of Outputs1 Output
Input Voltage MAX80 V
Input Voltage MIN18 V
Height1.75 mm
Operating Supply Current1.4 mA
LTC3705
2-Switch Forward
Controller and Gate Driver
FEATURES
DESCRIPTIO
High-Speed Top and Bottom Gate Drivers for
2-Switch Forward Converter
On-Chip Rectifier and Self-Starting Architecture
Eliminate Need for Separate Gate Drive Bias
Supply
Wide Input Voltage Supply Range: 18V to 80V
Tolerant of 100V Input Voltage Transients
Linear Regulator Controller for Fast Start-Up
Precision UVLO with Adjustable Hysteresis
Overcurrent Protection
Volt-Second Limit Prevents Transformer Core
Saturation
Voltage Feedforward for Fast Transient Response
Available in 16-Lead Narrow SSOP Package
The LTC
®
3705 is a controller for a 2-switch forward
converter and includes on-chip bottom and top gate
drivers that do not require external transformers.
For secondary-side control, combine the LTC3705 with
the LTC3706 PolyPhase
®
secondary-side synchronous
forward controller to create a complete forward converter
using a minimum of discrete parts. A proprietary scheme
is used to multiplex gate drive signals across the isolation
barrier through a tiny pulse transformer. The on-chip
rectifier and the same pulse transformer provide gate drive
bias power.
Alternatively, the LTC3705 can be used as a standalone
voltage mode controller in a primary-side control architec-
ture with optoisolator feedback. Voltage feedforward pro-
vides excellent line regulation and transient response.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
PolyPhase is a registered trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Patent Pending
APPLICATIO S
Isolated 48V Telecommunication Systems
Internet Servers and Routers
Distributed Power Step-Down Converters
Automotive and Heavy Equipment
TYPICAL APPLICATIO
V
IN+
36V –72V to 3.3V/20A Isolated 2-Switch Forward Converter
MURS120
T1
Si7852DP
1µF
100V
x3
1.2Ω
L1
1.2µH
V
OUT+
Si7336ADP
×2
Si7336ADP
CMPSH1-4
330µF
6.3V
×3
Si7852DP
MURS120
30mΩ
1W
2mΩ
2W
CZT3019
FQT7N10
100k
BAS21 0.22µF
L1: COILCRAFT SER2010-122
T1: PULSE PA0807
T2: PULSE PA0297
1µF
T2
I
S–
I
S+
PT
+
V
IN–
FG
SW SG
365k
NDRV
UVLO
V
CC
2.2µF
SS/FLT
BOOST TG TS BG IS
FB/IN
+
LTC3705
FS/IN
GND PGND VSLMT
LTC3706
15k
33nF
162k
PT
RUN/SS GND PGND PHASE SLP MODE REGSD
33nF
U
10µF
V
OUT–
2.2µF
V
IN
NDRV
V
CC
FS/SYNC
FB
ITH
680pF
102k
20k
22.6k
3705 TA01
U
U
3705fb
1

LTC3705EGN#TR Related Products

LTC3705EGN#TR LTC3705EGN#PBF LTC3705EGN LTC3705IGN#PBF LTC3705EGN#TRPBF LTC3705IGN#TRPBF
Description Switching Voltage Regulators LTC3705 - 2-Switch Forward Controller and Gate Driver Switching Voltage Regulators Primary Side Controller Switching Voltage Regulators LTC3705 - 2-Switch Forward Controller and Gate Driver Switching Voltage Regulators Primary Side Controller Switching Regulator Primary Side Controller Switching Regulator Primary Side Controller
Product Category Switching Voltage Regulators Switching Voltage Regulators Switching Voltage Regulators Switching Voltage Regulators switching regulator switching regulator
Product Attribute Attribute Value Attribute Value Attribute Value Attribute Value - -
Manufacturer ADI ADI ADI ADI - -
RoHS No -; RoHS Version Available Details No -; RoHS Version Available Details - -
Mounting Style SMD/SMT SMD/SMT SMD/SMT SMD/SMT - -
Package / Case SSOP-16 SSOP-16 SSOP-16 SSOP-16 - -
Number of Outputs 1 Output 1 Output 1 Output 1 Output - -
Input Voltage MAX 80 V 80 V 80 V 80 V - -
Input Voltage MIN 18 V 18 V 18 V 18 V - -
Height 1.75 mm 1.75 mm 1.75 mm 1.75 mm - -
Operating Supply Current 1.4 mA 1.4 mA 1.4 mA 1.4 mA - -
How to achieve over-damping control of constant temperature heating system, that is, the closer the temperature is to the set temperature, the slower the heating speed
Hello everyone, I want to make a constant temperature heating system. Using a single chip microcomputer to control a relay or a metal sheet temperature control switch can easily achieve the opening an...
flashtt Power technology
MSP430 external interrupt problem
I want to use external interrupt to detect whether the serial port has received data, but I checked the data sheet and found that the external interrupt can only be set to either rising edge or fallin...
两个人的烟火 Microcontroller MCU
View documentation in the micropython REPL online environment
I saw someone else write micropython offline documentation. Here are some other ways to view the documentation. First, download the micropython pdf document. It is about 200 pages. Second, use the onl...
allankliu MicroPython Open Source section
Find someone to attend the Embedded Linux training class (for a 10% discount)
Looking for someone to attend the Embedded Linux training class together (for a 10% discount) I used to work on MCU development and Bluetooth product development, and now I want to sign up for an Embe...
yyb0034 Linux and Android
Questions about dot matrix LCD display modules and character LCD display modules
What are the disadvantages of these two display modules? When should I use which module? What is the price difference?...
lzg123456 Embedded System
Weird problem with CCS 3.3 for OMAPL137
Today I wrote a piece of boot code. After initializing the various stacks in the working state, I encountered the following problem when establishing the interrupt vector table: The code is as follows...
huhuashen Embedded System

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 247  2886  431  1870  2304  5  59  9  38  47 
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