参数资料
| 型号： | LTC3705IGN#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR OCP 16SSOP |
| 标准包装： | 2,500 |
| 输出隔离： | 隔离 |
| 输入电压： | 18 V ~ 80 V |
| 输出电压： | 11V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 带卷 (TR) |
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-
APPLICATIO S
ture with optoisolator feedback. Voltage feedforward pro-
vides excellent line regulation and transient response.
■
■
■
■
Isolated 48V Telecommunication Systems
Internet Servers and Routers
Distributed Power Step-Down Converters
Automotive and Heavy Equipment
, 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
TYPICAL APPLICATIO
36V –72V to 3.3V/20A Isolated 2-Switch Forward Converter
V IN+
MURS120
T1
1.2 ?
L1
1.2 μ H
V OUT+
Si7852DP
?
?
1 μ F
100V
x3
Si7852DP
Si7336ADP
Si7336ADP
× 2
CMPSH1-4
330 μ F
6.3V
× 3
MURS120
V IN–
30m ?
1W
2m ?
2W
10 μ F
V OUT–
CZT3019
FQT7N10
100k
BAS21 0.22 μ F
L1: COILCRAFT SER2010-122
T1: PULSE PA0807
2.2 μ F
102k
365k
2.2 μ F
NDRV
UVLO
V CC
SS/FLT
BOOST TG TS BG IS
FB/IN +
LTC3705
FS/IN –
T2: PULSE PA0297
?
T2
?
1 μ F
I S–
I S+
PT +
PT –
FG
SW SG V IN
LTC3706
NDRV
V CC
FS/SYNC
FB
ITH
680pF
15k
33nF
GND PGND VSLMT
162k
33nF
RUN/SS GND PGND PHASE SLP MODE REGSD
20k
22.6k
3705 TA01
3705fb
1
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3707IGN#TRPBF | IC REG CTRLR BUCK PWM CM 28-SSOP |
| LTC3708EUH#PBF | IC REG CTRLR BUCK PWM CM 32-QFN |
| LTC3709EG#TRPBF | IC REG CTRLR BUCK PWM CM 36-SSOP |
| LTC3711EGN#TR | IC REG CTRLR BUCK PWM CM 24-SSOP |
| LTC3713EG#TR | IC REG CTRLR BUCK PWM CM 24-SSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3706EGN#PBF | 功能描述:IC SECONDARY SIDE CTRLR 24SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:PolyPhase® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| LTC3706EGN#TRPBF | 功能描述:IC SECONDARY SIDE CTRLR 24SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:PolyPhase® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| LTC3706IGN | 制造商:Linear Technology 功能描述:Secondary Side PWM Cntrlr POST REGUL 255KHz to 345KHz 24-Pin SSOP N |
| LTC3706IGN#PBF | 功能描述:IC SECONDARY SIDE CTRLR 24SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:PolyPhase® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| LTC3706IGN#TRPBF | 功能描述:IC SECONDARY SIDE CTRLR 24SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:PolyPhase® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
发布紧急采购，3分钟左右您将得到回复。