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| 型号： | SI8540-B-FW |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 1/18页 |
| 文件大小： | 0K |
| 描述： | IC CURRENT SENSOR AMP SOT23-5 |
| 标准包装： | 95 |
| 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： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 管件 |
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:
See page 12.
Pin Assignments
5-Pin SOT-23
SOT-23
1
5
4
3
2
RG1
SHDN
GND
RG2
OUT
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SI8540-B-FWR | 功能描述:板上安装电流传感器 High-side Current Sense Amplifier RoHS:否 制造商:Honeywell 电流额定值:+/- 56 A 传感器/变换器类型: 电源电压:4.75 VDC to 5.25 VDC 响应时间:< 0.2 us 输出电压: 工作温度:- 40 C to + 85 C 准确性:+/- 0.24 % 频率范围: |
| SI85-470 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SMT Power Inductor |
| SI85-470K | 制造商:DELTA 制造商全称:Delta Electronics, Inc. 功能描述:SMT Power Inductor |
| SI85-471 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SMT Power Inductor |
| SI85-471K | 制造商:DELTA 制造商全称:Delta Electronics, Inc. 功能描述:SMT Power Inductor |
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