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ACS750 Datasheet

  • ACS750

  • Allegro Current Sensor:

  • 12頁

  • ETC

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Preliminary Specification
Allegro Current Sensor: ACS750
The Allegro Current Sensor
provides an economical and precise
solution for current sensing in automotive and industrial systems,
packaged for easy implementation. Typical applications include
motor control, load management, switched mode power supplies and
over-current fault protection.
The sensor consists of a precision linear H IC optimized to an
all
internal magnetic circuit to increase device sensitivity. A combination
of a precisely controlled self-aligning assembly process (patents
pending) and the factory programmed precision of the linear Hall
sensor result in high level performance and product uniformity.
The power lead frame used for current sensing (pins 4 and 5) is
designed for extremely low power loss. The power leads are also
electrically isolated from the sensor leads (pins 1 鈥?3). This isolation
allows the Allegro Current Sensor to be used in applications
requiring electrical isolation without the use of opto-isolators or other
isolating feedback techniques.
An electrical current flowing from pins 4 to 5 will generate an analog
voltage >Vcc/2 on the output.
Features and Benefits
鈥?/div>
Monolithic Hall IC for High Reliability
鈥?/div>
ACS750LCA-075: +/- 75A up to
150擄C
鈥?/div>
ACS750ECA-100: +/- 100A up to
85擄C
鈥?/div>
Ultra-low Power Loss: Resistance = 120u鈩?/div>
鈥?/div>
No Trimming Required in the Application
鈥?/div>
Factory Trimmed for Gain and Offset
鈥?/div>
Linearity > 98.5%
鈥?/div>
Very Low Thermal Drift of Offset Voltage
鈥?/div>
13kHz Bandwidth
鈥?/div>
Single supply +5V Operation
鈥?/div>
Ratiometric Output from Supply Voltage
鈥?/div>
On-chip transient protection
Applications
鈥?/div>
Automotive Systems
鈥?/div>
Industrial Systems
鈥?/div>
Motor Control
鈥?/div>
Servo Systems
鈥?/div>
Power Conversion
鈥?/div>
Battery Monitor
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Vcc
Gnd
Output
I
p-+
I
p-
ABSOLUTE MAXIMUM RATINGS
Over-Current 鈥︹€︹€︹€︹€︹€︹€︹€︹€? . 225 A
Supply Voltage, Vcc..........鈥︹€︹€?鈥?. 16V
Output Voltage .................鈥︹€?........ 16V
Output Current Source....鈥︹€?.鈥︹€︹€?mA
Output Current Sink 鈥︹€︹€?.鈥︹€︹€?10mA
Operating Temperature .鈥?..-40擄C to 150擄C
Storage Temperature................鈥?.....170擄C
Maximum junction temperature...鈥?...165擄C
1
1
1 sec pulse, 10% duty cycle
Last updated January 8, 2003
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright 漏 1993, 1995 Allegro MicroSystems, Inc.
1

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