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参数资料
| 型号： | A6850KLTR-T |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH INTERFACE 2CHAN 8-SOIC |
| 标准包装： | 1 |
| 类型： | 霍尔效应开关 |
| 输入类型： | 电压 |
| 输出类型： | 电压 |
| 接口： | 2 线串口 |
| 电流 - 电源： | 5mA |
| 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： | 标准包装 |
| 产品目录页面： | 1141 (CN2011-ZH PDF) |
| 其它名称： | 620-1185-6 |
Description
The Allegro A6850 is designed to interface between a
microprocessor and a pair of 2-wire Hall effect sensor ICs.
The A6850 uses protected high-side low resistance DMOS
MOSFETs to switch the supply voltage to the two Hall effect
devices. Each switch can be controlled independently via
individual ENABLE pins and both switches are protected
with current-limiting circuitry. The output switches are rated
to operate to 26.5 V and will source at least 25 mA per channel
before current limiting.
Typical two-wire Hall device applications require the user to
measure the supply current to determine whether the Hall IC
is switched on (magnetic field present) or switched off (no
magnetic field present). This is usually accomplished by using
an external series shunt resistor and protection circuits for the
microprocessor. In many systems, the sensed voltage is used as
the input to a microprocessor analog-to-digital (A-to-D) input.
This provides the system with an indication of the status of the
two-wire switch as well as provides the capability for diagnostic
information if there is an open or shorted Hall device.
Approximate Scale 1:1
6850-DS Rev. 5
Features and Benefits
4.75 to 26.5 V operation
Low VIN-to-VOUT voltage drop
1/10 current sense feedback
Survive short-to-battery and short-to-ground faults
Survive 40 V load dump
>4 kV ESD rating on the output pins, >2 kV on all other pins
Output current limiting
Low operating and Sleep mode currents
Integrates with Allegro A114x and A118x Hall effect
two-wire sensor ICs
Dual Channel Switch Interface IC
Continued on the next page…
Package: 8 pin SOIC (suffix L)
Functional Block Diagram
A6850
VIN
OUTPUT1
GROUND
SENSE1
ENABLE1
ENABLE2
OUTPUT2
SENSE2
Fault
Detection
Control
Block
IOUTPUT1
×
1/10
Fault
Detection
IOUTPUT2
×
1/10
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