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LTC4449IDCB#TRPBF PDF预览

LTC4449IDCB#TRPBF

更新时间: 2024-11-21 20:10:51
品牌 Logo 应用领域
凌特 - Linear 驱动光电二极管接口集成电路驱动器
页数 文件大小 规格书
14页 173K
描述
LTC4449 - High Speed Synchronous N-Channel MOSFET Driver; Package: DFN; Pins: 8; Temperature Range: -40°C to 85°C

LTC4449IDCB#TRPBF 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:DFN包装说明:HVSON, SOLCC8,.12,18
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.15高边驱动器:YES
接口集成电路类型:HALF BRIDGE BASED MOSFET DRIVERJESD-30 代码:R-PDSO-N8
JESD-609代码:e3长度:3 mm
湿度敏感等级:1功能数量:1
端子数量:8最高工作温度:125 °C
最低工作温度:-40 °C标称输出峰值电流:4.5 A
封装主体材料:PLASTIC/EPOXY封装代码:HVSON
封装等效代码:SOLCC8,.12,18封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
电源:5 V认证状态:Not Qualified
座面最大高度:0.8 mm子类别:MOSFET Drivers
最大供电电压:6.5 V最小供电电压:3 V
标称供电电压:3.3 V电源电压1-最大:6.5 V
电源电压1-分钟:4 V电源电压1-Nom:5 V
表面贴装:YES技术:CMOS
温度等级:AUTOMOTIVE端子面层:Matte Tin (Sn)
端子形式:NO LEAD端子节距:0.45 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:2 mmBase Number Matches:1

LTC4449IDCB#TRPBF 数据手册

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LTC4449  
High Speed Synchronous  
N-Channel MOSFET Driver  
FEATURES  
DESCRIPTION  
The LTC®4449 is a high frequency gate driver that  
is designed to drive two N-Channel MOSFETs in a  
synchronous DC/DC converter. The powerful rail-to-rail  
driver capability reduces switching losses in MOSFETs  
with high gate capacitance.  
n
4V to 6.5V V Operating Voltage  
CC  
n
38V Maximum Input Supply Voltage  
n
Adaptive Shoot-Through Protection  
n
Rail-to-Rail Output Drivers  
n
3.2A Peak Pull-Up Current  
n
4.5A Peak Pull-Down Current  
The LTC4449 features a separate supply for the input logic  
to match the signal swing of the controller IC. If the input  
signalisnotbeingdriven,theLTC4449activatesashutdown  
modethatturnsoffbothexternalMOSFETs.Theinputlogic  
signalisinternallylevel-shiftedtothebootstrappedsupply,  
which functions at up to 42V above ground.  
n
8ns TG Rise Time Driving 3000pF Load  
n
7ns TG Fall Time Driving 3000pF Load  
n
Separate Supply to Match PWM Controller  
n
Drives Dual N-Channel MOSFETs  
Undervoltage Lockout  
n
n
Low Profile (0.75mm) 2mm × 3mm DFN Package  
The LTC4449 contains undervoltage lockout circuits on  
both the driver and logic supplies that turn off the external  
MOSFETs when an undervoltage condition is present. An  
adaptive shoot-through protection feature is also built-in  
to prevent the power loss resulting from MOSFET cross-  
conduction current.  
APPLICATIONS  
n
Distributed Power Architectures  
High Density Power Modules  
n
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
The LTC4449 is available in the 2mm × 3mm DFN  
package.  
TYPICAL APPLICATION  
Synchronous Buck Converter Driver  
LTC4449 Driving 3000pF Capacitive Loads  
V
CC  
4V TO 6.5V  
V
CC  
INPUT (IN)  
5V/DIV  
V
IN  
BOOST  
TO 38V  
V
LOGIC  
LTC4449  
GND  
TOP GATE  
(TG - TS)  
5V/DIV  
TG  
TS  
BG  
V
OUT  
PWM  
IN  
BOTTOM GATE  
(BG) 5V/DIV  
4449 TA01a  
4449 TA01b  
10ns/DIV  
4449fa  
1

LTC4449IDCB#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC4449IDCB#TRMPBF Linear

完全替代

LTC4449 - High Speed Synchronous N-Channel MOSFET Driver; Package: DFN; Pins: 8; Temperatu

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