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LT2940CDDPBF PDF预览

LT2940CDDPBF

更新时间: 2024-02-15 01:34:56
品牌 Logo 应用领域
凌特 - Linear 监视器
页数 文件大小 规格书
24页 338K
描述
Power and Current Monitor

LT2940CDDPBF 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Active包装说明:TSSOP,
针数:12Reach Compliance Code:compliant
风险等级:5.16可调阈值:YES
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDSO-G12
JESD-609代码:e3长度:4.039 mm
湿度敏感等级:1信道数量:1
功能数量:1端子数量:12
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.1 mm最大供电电压 (Vsup):80 V
最小供电电压 (Vsup):6 V标称供电电压 (Vsup):12 V
表面贴装:YES温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:3 mm
Base Number Matches:1

LT2940CDDPBF 数据手册

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LT2940  
Power and Current Monitor  
FEATURES  
DESCRIPTION  
The LT®2940 measures a high side current and a differ-  
ential voltage, multiplies them and outputs a current  
proportional to instantaneous power. Bidirectional high  
side currents and bipolar voltage differences are correctly  
handled by the four-quadrant multiplier and push-pull  
output stage, which allows the LT2940 to indicate forward  
and reverse power flow.  
n
Four-Quadrant Power Measurement  
n
±±5 Power Measurement Aꢀꢀuraꢀc  
n
4V to 80V High Side Sense, 100V Max  
n
Current Mode Power and Current Outputs  
n
Output Bandwidth Exꢀeeds ±00kHz  
n
±ꢁ5 Current Measurement Aꢀꢀuraꢀc  
n
6V to 80V Supply Range, 100V Max  
n
Inverting and Noninverting Open-Collector  
An integrated comparator with inverting and noninvert-  
ing open-collector outputs makes the LT2940 a complete  
power level monitor. In addition, an output current pro-  
portional to the sensed high side current allows current  
monitoring. The current mode outputs make scaling,  
filtering and time integration as simple as selecting ex-  
ternal resistors and/or capacitors.  
Comparator Outputs  
n
Available in 12-Pin DFN (3mm × 3mm) and 12-Lead  
MSOP Packages  
APPLICATIONS  
n
Board Level Power and Current Monitoring  
n
Line Card and Server Power Monitoring  
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.  
n
Power Sense Circuit Breaker  
n
Power Control Loops  
n
Power/Energy Meters  
n
Battery Charger Metering  
TYPICAL APPLICATION  
Load Monitor Alarms Above 60W  
Monitor Output Level and Load Power  
I
LOAD  
2.5  
2.0  
1.5  
1.0  
0.5  
0
120  
96  
72  
48  
24  
0
0A TO 10A  
80V  
6V TO 80V  
30V  
+
V
20mΩ  
2W  
15V  
LOAD  
LOAD  
10V  
LED ON  
5V  
1k  
V
= 6V  
LOAD  
+
V
I
I
CC  
LATCH  
110k  
+
CMPOUT  
LED OFF  
60W ALARM  
V
LT2940  
GND  
LED ON WHEN  
LOAD  
CMPOUT  
10.0k  
P
> 60W  
+
CMP  
V
PMON  
IMON  
mV  
W
mV  
A
V
= P  
• 20.75  
LOAD  
V
= I  
• 100  
PMON  
IMON LOAD  
0
2
4
6
8
(A)  
10  
12  
14  
24.9K  
4.99k  
I
LOAD  
2940 TA01b  
1
12  
k
=
V
k = 20mΩ  
I
P
LOAD  
= V  
• I  
LOAD LOAD  
2940 TA01a  
2940f  
1

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