ACS770ECB-200U-PFF-T Datasheet PDF - Allegro MicroSystems
| Part Number | ACS770ECB-200U-PFF-T | |
| Description | High Precision Linear Current Sensor IC | |
| Manufacturers | Allegro MicroSystems | |
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ACS770xCB
Thermally Enhanced, Fully Integrated, Hall Effect-Based
High Precision Linear Current Sensor IC with 100 μΩ Current Conductor
Features and Benefits
▪ Industry-leading total output accuracy achieved with new
piecewise linear digital temperature compensation of
offset and sensitivity
▪ Industry-leading noise performance through proprietary
amplifier and filter design techniques
▪ 120 kHz typical bandwidth
▪ 4.1 μs output rise time in response to step input current
▪ Integrated shield greatly reduces capacitive coupling from
current conductor to die due to high dV/dt signals, and
prevents offset drift in high-side, high voltage applications
▪ Greatly improved total output error through digitally
programmed and compensated gain and offset over the full
operating temperature range
▪ Small package size, with easy mounting capability
▪ Monolithic Hall IC for high reliability
▪ Ultra-low power loss: 100 μΩ internal conductor resistance
▪ Galvanic isolation allows use in economical, high-side
current sensing in high voltage systems
▪ 4.5 to 5.5 V, single supply operation
▪ Output voltage proportional to AC or DC currents
▪ Factory-trimmed for accuracy
▪ Extremely stable output offset voltage
▪ Undervoltage lockout for VCC below specification
▪ AEC Q-100 automotive qualified
▪ UL certified, File No. E316429
Package: 5-pin package (suffix CB)
Tytpeested
PFF
Leadform
PSF
Leadform
TÜV America
Certificate Number:
U8V 13 08 54214 027
Additional leadforms available for qualifying volumes
Description
The Allegro™ ACS770 family of current sensor ICs provides
economical and precise solutions forAC or DC current sensing.
Typical applications include motor control, load detection and
management, power supply and DC-to-DC converter control,
inverter control, and overcurrent fault detection.
The device consists of a precision, low-offset linear Hall
circuit with a copper conduction path located near the die.
Applied current flowing through this copper conduction
path generates a magnetic field that is concentrated by a low
magnetic hysteresis core, then converted by the Hall IC into a
proportional voltage. Device accuracy is optimized through the
close proximity of the magnetic signal to the Hall transducer.
A precise, proportional output voltage is provided by the
low-offset, chopper-stabilized BiCMOS Hall IC, which is
programmed for accuracy at the factory. Proprietary digital
temperature compensation technology greatly improves the
IC accuracy and temperature stability without influencing the
high bandwidth operation of the analog output.
High level immunity to current conductor dV/dt and stray
electric fields is offered byAllegro proprietary integrated shield
technology for low output voltage ripple and low offset drift
in high-side, high voltage applications.
The output of the device has a positive slope (>VCC/2 for
bidirectional devices) when an increasing current flows through
the primary copper conduction path (from terminal 4 to terminal
5), which is the path used for current sampling. The internal
resistance of this conductive path is 100 μΩ typical, providing
low power loss.
The thickness of the copper conductor allows survival of the
device at high overcurrent conditions. The terminals of the
Continued on the next page…
Typical Application
Application 1. The ACS770 outputs an analog signal,
VOUT, that varies linearly with the bidirectional AC or DC
primary sampled current, IP, within the range specified.
RF and CF are for optimal noise management, with
values that depend on the application.
4 IP+
VCC 1
ACS770
IP GND 2
5
IP– VIOUT 3
5V
CBYP
0.1 μF
CF
RF
VOUT
ACS770-DS
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ACS770xCB
Thermally Enhanced, Fully Integrated, Hall Effect-Based
High Precision Linear Current Sensor IC with 100 μΩ Current Conductor
V+
VCC
IP+
C BYP
IP–
Functional Block Diagram
To all subcircuits
Temperature
Sensor
Programming
Control
EEPROM and
Control Logic
Sensitivity Control
Offset Control
Signal Recovery
GND
VIOUT
CL
Pin-out Diagram
Terminal List Table
Number
Name
1 VCC
2 GND
3 VIOUT
4 IP+
5 IP–
IP+ 4
IP– 5
3 VIOUT
2 GND
1 VCC
Description
Device power supply terminal
Signal ground terminal
Analog output signal
Terminal for current being sampled
Terminal for current being sampled
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
5
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ACS770ECB-200U-PFF-T electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ACS770ECB-200U-PFF-T.PDF Datasheet ] | |
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