Current Sensor: ACS752SCA-050
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 2003, Allegro MicroSystems, Inc.
ACS75250-DS Rev. 3
Always order by complete part number:
ACS752SCA-050
The Allegro ACS752 family of current sensors provides economical and precise
solutions for current sensing in industrial, commercial, and communications sys-
tems. The device package allows easy implementation by the customer. Typical
applications include: motor control, load detection and management, switched
mode power supplies, and overcurrent fault protection.
The sensor consists of a precision linear Hall IC, which is optimized to an internal
magnetic circuit to increase device sensitivity. The combination of a precisely
controlled self-aligning assembly process (patents pending), and the factory pro-
grammed precision of the linear Hall sensor, result in high-level performance and
product uniformity.
The primary conductor used for current sensing (terminals 4 and 5) is designed
for extremely low power loss. These power terminals also are electrically isolated
from the sensor leads (pins 1, 2, and 3). This allows the ACS752 family of sen-
sors to be used in applications requiring electrical isolation, without using opto-
isolators or other costly isolation techniques.
The output of this device has a positive slope (>V
CC
/ 2) when an increasing cur-
rent fl ows from terminal 4 to terminal 5.
The ACS752 family is lead-free. All leads are coated with 100% matte tin, and
there is no lead inside the package. The heavy gauge leadframe is made of
oxygen-free copper.
Features and Benefi ts
• Monolithic Hall IC for high reliability
• Single +5 V supply
• High isolation voltage
• Lead-free
• UL recognized
• End-of-line factory-trimmed for gain and offset
• Ultra-low power loss: low resistance of primary conductor
• Ratiometric output from supply voltage
• Low thermal drift of offset voltage
• On-chip transient protection
• Small package size, with easy mounting capability
Applications
• Industrial systems
• Motor control
• Power distribution
• Battery powered systems
• Electric vehicles
AB SO LUTE MAX I MUM RAT INGS
Operating Temperature
S.....................................................–20 to +85ºC
Supply Voltage, Vcc...........................................16 V
Output Voltage...................................................16 V
Output Current Source..................................... 3 mA
Output Current Sink........................................10 mA
Maximum Storage Temperature......................170°C
Maximum Junction Temperature....................165°C
1
2
3
4
5
Pin 1: V
CC
Pin 2: Gnd
Pin 3: Output
Terminal 4: I
p+
Terminal 5: I
p-