参数资料
型号: SI8540-B-FSR
厂商: Silicon Laboratories Inc
文件页数: 1/18页
文件大小: 0K
描述: IC CURRENT SENSOR AMP 8SOIC
标准包装: 3,000
放大器类型: 电流检测
电路数: 1
电流 - 电源: 90µA
电流 - 输出 / 通道: 10mA
电压 - 电源,单路/双路(±): 5 V ~ 36 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOICN
包装: 带卷 (TR)
Rev. 1.2 8/13
Copyright 2013 by Silicon Laboratories
Si8540
H IGH-S IDE C URRENT S ENSE A MPLIFIER
Features
Applications
Description
The Si8540 is a unidirectional, 36 V (max), high-side current sense
amplifier for use in applications requiring current monitoring and/or
control. This device draws bias current from the high-side line to which it
is attached, eliminating the need for an external supply. It measures
current from 0.1 to 10 A by sensing the voltage across an external sense
resistor (or PCB trace) from dc to 20 kHz and can achieve measurement
accuracies of 0.2% (typical) at full load. The device output is a current
signal proportional to measured current and is easily converted to a
scaled voltage using a single external resistor. The Si8540 is available in
compact SOT-23 package.
Functional Block Diagram
Complete, unidirectional high-side
current sense capability
0.2% full-scale accuracy
+5 to +36 V supply operation
85 dB power supply rejection
90 A max supply current
9 A shutdown current
Operating Temperature Range:
–40 to +85 °C
5-pin SOT-23 package
RoHS-compliant
Battery chargers
Smart battery packs
DC motor control
Backup systems
Current control applications
Si8540
ROUT
VSOURCE
RSENSE
LO
AD
RG2
RG1
VOUT
ILOAD
Patents pending
Ordering Information:
Pin Assignments
5-Pin SOT-23
SOT-23
1
5
4
3
2
RG1
SHDN
GND
RG2
OUT
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