- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377761 > LTC1698IS (LINEAR TECHNOLOGY CORP) Isolated Secondary Synchronous Rectifier Controller PDF資料下載
參數(shù)資料
| 型號： | LTC1698IS |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Isolated Secondary Synchronous Rectifier Controller |
| 中文描述： | SWITCHING CONTROLLER, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SO-16 |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 1047K |
| 代理商： | LTC1698IS |
8
LTC1698
1698f
BLOCK DIAGRA
I-TO-V CONVERTER
R
20k
R
OVP
3k
100k
V
FB
0.94V
REF
M
PWRGD
R
ILIM
3k
M
ILIM
MARGIN
7
SYNC
15
OPTODRV
5
±
5% V
REF
V
REF
BANDGAP
SYNC IN
V
CC
V
DD
V
AUX
14
–
+
–
+
–
+
ERR
–
+
I
LIM
25mV
+
–
+
OVP
V
REF
1698 BD
OPTO
PWRGD
10
OVPIN
9
I
COMP
13
I
SNS
12
I
SNSGND
11
V
COMP
6
V
FB
8
CG
2
FG
16
PWRGD
AUX GEN
V
CC
GEN
1
OPERATIOU
The LTC1698 is a secondary-side synchronous rectifier
controller designed to work with the LT3781 primary-side
synchronous controller chip to form an isolated synchro-
nous forward converter. This chip set uses a dual transis-
tor forward topology that is predominantly used in distrib-
uted power supply systems where isolated low voltages
are needed to power complex electronic equipment. The
primary stage is a current mode, fixed frequency forward
converter and provides the typical PWM operation. A
power transformer is used to provide the functions of
input/output isolation and voltage step-down to achieve
the required low output voltage. Instead of using typical
Schottky diodes, synchronous rectification on the sec-
ondary offers isolation with high efficiency. It supplies
high power without the need of bulky heat sinks, which is
often a problem in any space constrained application.
The LTC1698 not only provides synchronous drivers for
the external MOSFETs, it comes with other housekeeping
functions performed on the secondary side of the power
supply, all within a single integrated controller. Figure 1
shows the typical chip-set application. Upon power up, the
LTC1698’s V
DD
input is low, the gate drivers TG and BG are
both at the ground potential. The secondary forward and
(Refer to Block Diagram)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1698EGN | Isolated Secondary Synchronous Rectifier Controller |
| LTC1698ES | Isolated Secondary Synchronous Rectifier Controller |
| LTC1698IGN | Isolated Secondary Synchronous Rectifier Controller |
| LTC1700 | Quadruple 2-Input Exclusive-OR Gates 14-SO 0 to 70 |
| LTC1700EMS | Synchronous 8-Bit Up/Down Binary Counters 24-SOIC 0 to 70 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1698IS#PBF | 功能描述:IC REG CTRLR ISO PWM CM 16-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無 升壓:是 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR) |
| LTC1698IS#TR | 功能描述:IC REG CTRLR ISO PWM CM 16-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX |
| LTC1698IS#TRPBF | 功能描述:IC REG CTRLR ISO PWM CM 16-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX |
| LTC1699EGN-80 | 功能描述:IC PROGRAMMER VOLT SMBUS 16SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動設(shè)備 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR |
| LTC1699EGN-80#PBF | 功能描述:IC PROGRAMMER VOLT SMBUS 16SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 應(yīng)用說明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:37 系列:- 應(yīng)用:醫(yī)療用超聲波成像，聲納 電流 - 電源:- 電源電壓:2.37 V ~ 6 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:56-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-TQFN-EP（8x8） 包裝:管件 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。