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LTC1478CS PDF预览

LTC1478CS

更新时间: 2024-09-24 22:57:35
品牌 Logo 应用领域
凌特 - Linear 开关接口集成电路光电二极管驱动
页数 文件大小 规格书
8页 226K
描述
Single and Dual Protected High Side Switches

LTC1478CS 技术参数

是否Rohs认证: 不符合生命周期:Transferred
零件包装代码:SOIC包装说明:SOP, SOP16,.25
针数:16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.1内置保护:OVER CURRENT; THERMAL
驱动器位数:2接口集成电路类型:BUFFER OR INVERTER BASED PERIPHERAL DRIVER
JESD-30 代码:R-PDSO-G16JESD-609代码:e0
长度:9.906 mm湿度敏感等级:1
功能数量:1端子数量:16
最高工作温度:70 °C最低工作温度:
输出电流流向:SINK最大输出电流:1 A
标称输出峰值电流:2.4 A封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP16,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):235电源:3/5 V
认证状态:Not Qualified座面最大高度:1.752 mm
子类别:Peripheral Drivers最大供电电压:5.5 V
最小供电电压:2.7 V标称供电电压:5 V
表面贴装:YES技术:CMOS
温度等级:COMMERCIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:20
宽度:3.9 mmBase Number Matches:1

LTC1478CS 数据手册

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LTC1477/LTC1478  
Single and Dual Protected  
High Side Switches  
U
FEATURES  
DESCRIPTION  
The LTC®1477/LTC1478 protected high side switches  
provide extremely low RDS(ON) switching with built-in  
protectionagainstshort-circuitandthermaloverloadcon-  
ditions. A built-in charge pump generates gate drive  
higherthanthesupplyvoltagetofullyenhancetheinternal  
NMOSswitch. Thisswitchhasnoparasiticbodydiodeand  
therefore no current flows through the switch when it is  
turned off and the output is forced above the input supply  
voltage. (DMOS switches have parasitic body diodes that  
become forward biased under these conditions.)  
Extremely Low RDS(ON) Switch: 0.07  
No Parasitic Body Diode  
Built-In Short-Circuit Protection: 2A  
Built-In Thermal Overload Protection  
Operates from 2.7V to 5.5V  
Inrush Current Limited  
Ultralow Standby Current: 0.01µA  
Built-In Charge Pump  
Controlled Rise and Fall Times: tR = 1ms  
Single Switch in 8-Pin SO Package  
Dual Switch in Narrow 16-Pin SO Package  
Two levels of protection are provided by the  
LTC1477/LTC1478. The first level of protection is short-  
circuit current limit which is set at 2A. The short-circuit  
current can be reduced to as low as 0.85A by disconnect-  
ing portions of the power device (see Applications Infor-  
mation). The second level of protection is provided by  
thermal overload protection which limits the die tempera-  
ture to approximately 130°C.  
U
APPLICATIONS  
Notebook Computer Power Management  
Power Supply/Load Protection  
Supply/Battery Switch-Over Circuits  
Circuit Breaker Function  
"Hot Swap" Board Protection  
The LTC1477 single is available in 8-lead SO packaging.  
The LTC1478 dual is available in 16-lead SO packaging.  
Peripheral Power Protection  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
W
W
SI PLIFIED BLOCK DIAGRAM  
V
V
V
V
IN3  
INS  
IN1  
IN2  
Switch Output Voltage  
5.20  
T
= 25°C  
A
GATE CHARGE  
AND  
DISCHARGE  
CONTROL LOGIC  
V
= V = V = V = 5V  
IN1  
IN2 IN3 INS  
5.10  
5.00  
4.90  
4.80  
4.70  
4.60  
*
*
*
CURRENT LIMIT  
AND THERMAL  
SHUTDOWN  
CHARGE  
PUMP  
V
EN  
OUT  
0
0.5  
0.75 1.00  
1.25 1.50  
0.25  
OUTPUT CURRENT (A)  
*NMOS SWITCHES WITH NO PARASITIC BODY DIODES  
LTC1477/1478 • TA01  
LTC1477/1478 • TP02  
1

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