ACS709 Allegro MicroSystems, Inc., ACS709 Datasheet - Page 3

• Manufacturer Part Number: ACS709
• Description: High Bandwidth, Fast Fault Response Current Sensor Ic In Thermally Enhanced Package
• Manufacturer: Allegro MicroSystems, Inc.

ACS709
IP+
IP+
IP+
IP+
IP+
IP+
IP–
IP–
IP–
IP–
IP–
IP–
Pin-out Diagram
10
12
11
1
2
3
4
5
6
7
8
9
FAULT_EN
VOC
IP+
IP–
24
23
22
21
20
19
18
17
16
15
14
13
NC
NC
FAULT_EN
VOC
VCC
FAULT
VIOUT
FILTER
VZCR
GND
NC
NC
Sensitivity
Bias
Hall
Trim
Hall
Amplifier
Terminal List Table
13, 14, 23, 24
7 through 12
1 through 6
Number
15
16
17
18
19
20
21
22
Recovery
High Bandwidth, Fast Fault Response Current Sensor IC
Signal
VCC
POR
FAULT_EN Enables overcurrent faulting when high. Resets ¯ F ¯ ¯ A ¯ U ¯ ¯ L ¯ ¯ T ¯ when low.
Functional Block Diagram
FILTER
VIOUT
¯ F ¯ ¯ A ¯ U ¯ ¯ L ¯ ¯ T ¯
Name
VZCR
GND
VCC
VOC
IP+
IP–
NC
GND
Fault
Comparator
Sensed current copper conduction path pins. Terminals for current being sensed;
fused internally, loop to IP– pins; unidirectional or bidirectional current flow.
Sensed current copper conduction path pins. Terminals for current being sensed;
fused internally, loop to IP+ pins; unidirectional or bidirectional current flow.
No connection
Device ground connection.
Voltage Reference Output pin. Zero current (0 A) reference; output voltage on this
pin scales with V
Filter pin. Terminal for an external capacitor connected from this pin to GND to set
the device bandwidth.
Analog Output pin. Output voltage on this pin is proportional to current flowing
through the loop between the IP+ pins and IP– pins.
Overcurrent Fault pin. When current flowing between IP+ pins and IP– pins
exceeds the overcurrent fault threshold, this pin transitions to a logic low state.
Supply voltage.
Overcurrent Input pin. Analog input voltage on this pin sets the overcurrent fault
threshold.
R
CC
F(INT)
.
FAULT Reset
In Thermally Enhanced Package
FILTER
+
–
–
+
POR
2V
REF
V
Description
Trim
OUT(Q)
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Control
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Logic
D
CLK
R
Q
3 mA
Drain
VZCR
FAULT
VIOUT
3